DRAFT Initial Study and Mitigated Negative Declaration

Dollar General Retail Store

Lead Agency:

City of Yreka 701 Fourth Street Yreka, CA 96097

April 2018

DRAFT Initial Study and Mitigated Negative Declaration Dollar General Retail Store

April 2018

Lead Agency:

City of Yreka 701 Fourth Street Yreka, CA 96097

Prepared by:

55 Hanover Lane

Chico, CA 95973

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DRAFT MITIGATED NEGATIVE DECLARATION DOLLAR GENERAL PROJECT

Lead Agency: City of Yreka

Project Proponent: Cross Development

Project Location: The Project is located on the north side of Montague Road / State Route 3 (SR 3) between N. Main Street and Deer Creek Way in the City of Yreka (see Figure 1. Project Vicinity). Interstate 5 (I-5) is 0.2 mile to the east. The site is bounded by existing commercial uses to the south, east and west, and the City’s corporate yard to the north (see Figure 2. Project Location). The site is located in Section 23 of Township 45 North, Range 07 West of the Mount Diablo Base and Meridian. The approximate center of the site is located at latitude 41º44’25” N and longitude 122º37”54” W.

Project Description: The Project consists of the development of a 9,100-square foot Dollar General store. The proposed Project is located on 0.925 acres of a 3.43-acre parcel (APN 053-591-380) within the City’s CT (Commercial Tourist) zoning district.

Mitigation Measures Incorporated into the Project to Avoid Significant Effects:

Air Quality

AQ-1: The following dust control measures shall be incorporated into the project to reduce short- term emissions resulting from construction. Depending on weather and site conditions, measures shall include, but are not limited to, the following:

1. Use regular watering to control dust generation as described below.

2. When transporting soil and other dust-generating materials by truck during construction activities, cover materials and/or maintain 2 feet of freeboard.

3. Wash or wet-sweep paved streets adjacent to construction sites as necessary to remove accumulated dust.

4. During earth-moving operations, conduct watering as necessary to prevent visible emissions from extending beyond active areas.

5. Water all unpaved roads used for any vehicular traffic at least once per every two hours of active operations and restrict vehicle speed on unpaved roads to 15 miles per hour (mph), or as appropriate to reduce dust.

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6. Pave, maintain a wet surface, or apply dust suppressants on all unpaved access roads, parking areas, and staging areas.

7. Suspend land clearing, grading, earth-moving, or excavation activities when winds exceed 20 miles per hour.

8. Cover inactive storage piles of topsoil or landscape materials.

9. Post a publicly visible sign with the number and person to contact regarding dust complaints. This person shall have the authority and responsibility to respond and take corrective action within 24 hours.

10. No temporary asphalt or concrete batch will be allowed to operate onsite.

11. Construction staging areas should be located at a distance that would reduce odors and dust emissions from existing schools and residential areas.

Timing/Implementation: During construction activities Monitoring/Enforcement: Siskiyou County Air Pollution Control District; City of Yreka Building Department

AQ-2: The following dust control measures shall be incorporated into the project to reduce the airborne entrainment of asbestos resulting from construction. Depending on weather and site conditions, measures shall include, but are not limited to, the following:

1. Unpaved areas subject to vehicle traffic must be stabilized by being kept adequately wetted, treated with a chemical dust suppressant, or covered with material that contains less than 0.25 percent asbestos.

2. The speed of any vehicles and equipment traveling across unpaved areas must be no more than fifteen (15) miles per hour unless the road surface and surrounding area is sufficiently stabilized to prevent vehicles and equipment traveling more than 15 miles per hour from emitting dust that is visible crossing the project boundaries.

3. Storage piles and disturbed areas not subject to vehicular traffic must be stabilized by being kept adequately wetted, treated with a chemical dust suppressant, or covered with material that contains less than 0.25 percent asbestos.

4. Activities must be conducted so that no track-out from any road construction project is visible on any paved roadway open to the public.

5. Equipment must be washed down before moving from the property onto a paved public road.

Timing/Implementation: During construction activities Monitoring/Enforcement: Siskiyou County Air Pollution Control District; City of Yreka Building Department

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Cultural Resources CUL-1: If, during the course of project construction and/or operations, cultural resources (i.e., prehistoric sites, historic features, isolated artifacts, and features such as concentrations of shell or glass) are discovered, work shall be halted immediately within 50 feet of the discovery, the City of Yreka Planning Department shall be immediately notified, and a professional archaeologist who meets the Secretary of the Interior’s Professional Qualifications Standards in prehistoric or historical archaeology shall be retained to determine the significance of the discovery. The City shall consider mitigation recommendations presented by a professional archaeologist and implement a measure or measures that the City deems feasible and appropriate. Such measures may include avoidance, preservation in place, excavation, documentation, curation, data recovery, or other appropriate measures.

Timing/Implementation: During ground-disturbing construction activities Monitoring/Enforcement: City of Yreka Building Department

CUL-2: If subsurface deposits believed to be of paleontological significance are discovered during construction, all work must halt within a 50-foot radius of the discovery. An on-site paleontological monitor, meeting the Secretary of the Interior’s Professional Qualification Standards for paleontology, shall be retained by the project applicant and shall be afforded a reasonable amount of time to evaluate the significance of the find. Work cannot continue at the discovery site until the paleontologist conducts sufficient research and data collection to make a determination that the resource is either (1) not a paleontological resource or (2) not potentially significant. If a potentially eligible resource is encountered, the paleontologist, lead agency, and project applicant shall arrange for either (1) total avoidance of the resource, if possible, or (2) test excavations to evaluate eligibility and, if eligible, total data recovery as mitigation. The determination shall be formally documented in writing and submitted to the City, as verification that the provisions in CEQA for managing unanticipated discoveries have been met.

Timing/Implementation: During ground-disturbing construction activities Monitoring/Enforcement: City of Yreka Building Department

CUL-3: If, during the course of project implementation, human remains are discovered, all work shall be halted immediately within 50 feet of the discovery, the City of Yreka Building Department shall be immediately notified, and the County Coroner must be notified, according to Section 5097.98 of the Public Resources Code and Section 7050.5 of the California Health and Safety Code. If the remains are determined to be Native American, the coroner will notify the Native American Heritage Commission, and the procedures outlined in California Code of Regulations Section 15064.5(d) and (e) shall be followed.

Timing/Implementation: During ground-disturbing construction activities Monitoring/Enforcement: City of Yreka Building Department

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CONTENTS

Draft Mitigated Negative Declaration – Yreka Dollar General Project ...... 1

Mitigation Measures Incorporated into the Project to Avoid Significant Effects ...... 2

SECTION 1.0 Background ...... 1-1 1.1 Summary ...... 1-1 1.2 Introduction ...... 1-1 1.3 Lead Agency ...... 1-2 1.4 Purpose and Document Organization ...... 1-2 1.5 Project Location ...... 1-3 1.6 Surrounding Land Uses/Environmental Setting ...... 1-3

SECTION 2.0 Project Description ...... 2-1 2.1 Project Setting ...... 2-1 2.2 Project Overview ...... 2-1 2.3 Project Approvals ...... 2-2 2.4 Relationship of Project to Other Plans ...... 2-3 2.5 Consultation with California Native American Tribe(s) ...... 2-4

SECTION 3.0 Environmental Factors Potentially Affected and Determination ...... 3-1 3.1 Environmental Factors Potentially Affected ...... 3-1

SECTION 4.0 Environmental Checklist and Discussion ...... 4-1 4.1 Aesthetics ...... 4-1 4.2 Agriculture and Forestry Resources ...... 4-3 4.3 Air Quality ...... 4-5 4.4 Biological Resources...... 4-13 4.5 Cultural Resources ...... 4-19 4.6 Geology and Soils ...... 4-24 4.7 Greenhouse Gas Emissions ...... 4-29 4.8 Hazards and Hazardous Materials ...... 4-31 4.9 Hydrology and Water Quality...... 4-35 4.10 Land Use and Planning ...... 4-40 4.11 Mineral Resources ...... 4-41 4.12 Noise ...... 4-42 4.13 Population and Housing ...... 4-48

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4.14 Public Services ...... 4-49 4.15 Recreation ...... 4-51 4.16 Transportation/Traffic ...... 4-52 4.17 Tribal Cultural Resources ...... 4-55 4.18 Utilities and Service Systems ...... 4-56 4.19 Mandatory Findings of Significance ...... 4-61

SECTION 5.0 List of Preparers ...... 5-1 5.1 Lead Agency Name ...... 5-1 5.2 ECORP Consulting, Inc...... 5-1

SECTION 6.0 Bibliography ...... 6-1

SECTION 7.0 List of Appendices ...... 7-1

Appendix A – Air Quality Modeling Outputs Appendix B – Biological Resources Assessment Appendix C – Cultural Resources Records Search & Literature Review (CONFIDENTIAL) Appendix D – Geotechnical Engineering Investigation Appendix E – Greenhouse Gas Emissions Modeling Outputs Appendix F – Roadway Noise Calculations

LIST OF TABLES

Table 4.3-1. NCUAQMD Thresholds of Significance (Proxy Thresholds for Analysis Purposes) ...... 4-7 Table 4.3-2. Project-Related Criteria Air Pollutants ...... 4-8 Table 4.5-1. Previous Cultural Studies within 0.5 Mile of the Project Site ...... 4-21 Table 4.12-1. Typical Noise Levels from Construction Equipment ...... 4-44 Table 4.12-2. Typical Construction Equipment Vibration Levels ...... 4-46

LIST OF FIGURES

Figure 1. Project Vicinity ...... 1-5 Figure 2. Project Location ...... 1-7 Figure 3. Site Plan ...... 1-9

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ACRONYMS AND ABBREVIATIONS A.D. Anno Domini AB Assembly Bill ADWF Average dry weather flow AF Acre-feet APE Area of Potential Effects APN Accessor Parcel Number AQMP Air Quality Management Plan B.P. Before present BMPs Best Management Practices BP Business Professional BRA Biological Resource Assessment BRM Bedrock mortar C Commercial CalEEMod California Emissions Estimator Model Caltrans California Department of Transportation CARB California Air Resources Board CCR California Code of Regulations CCTS Central California Taxonomic System CDFW California Department of Fish and Wildlife CEQA California Environmental Quality Act

CH4 Methane CNDDB California Natural Diversity Database CNPS California Native Society CO Carbon Monoxide

CO2 Carbon Dioxide

CO2e Carbon Dioxide Equivalent CRHR California Register of Historic Places CRPR California Rare Plant Rank CT Commercial Tourist CWA Clean Water Act DOC California Department of Conservation DTSC Department of Toxic Substances Control EIR Environmental Impact Report EPA Environmental Protection Agency FEMA Federal Emergency Management Agency FGC Fish and Game Code FIRM Flood Insurance Rate Map FMMP Farmland Mapping and Monitoring Program GC General Commercial GHGs Greenhouse Gases

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ACRONYMS AND ABBREVIATIONS gpd Gallons per day LSTs Localized Significance Thresholds mg Million gallon mgd Million gallons per day MLD Most Likely Descendent MMT Million Metric Tons MND Mitigated Negative Declaration MSHCP Multiple Species Habitat Conservation Plan MSL Mean sea level MTBA Migratory Bird Treaty Act

MTCO2eq Metric Tons of Carbon Dioxide Equivalent

N2O Nitrous Oxide NAHC Native American Heritage Commission NCIC North Central Information Center ND Negative Declaration NEAB Northeast Plateau Air Basin NHPA National Historic Preservation Act

NO2 Nitrogen Dioxide

NOx Nitrogen Oxides NPDES National Pollutant Discharge Elimination System NRCS Natural Resource Conservation Service NRCS Natural Resources Conservation Service NRHP National Register of Historic Places

O3 Ozone OHP California Office of Historic Preservation OHV Off-Highway Vehicle OPR California Office of Planning and Research OS Open Space OS-C Open Space-Conservation PF Public Facilities

PM10 and PM2.5 Particulate Matter PUB Public PWWF Peak wet weather flow RCPG Regional Comprehensive Plan and Guide ROG Reactive Organic Gases RTP Regional Transportation Plan RWQCB Regional Water Quality Control Board SAA Streambed Alteration Agreement SCH State Clearinghouse SIP State Implementation Plan

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ACRONYMS AND ABBREVIATIONS SR State Route SRA Sensitive Receptor Area SSC Species of special concern SWPPP Storm Water Pollution Prevention Plan SWRCB State Water Resources Control Board UCMP California Museum of Paleontology USACE United States Army Corps of Engineers USFWS United States Fish and Wildlife Service WWTRF Wastewater Treatment and Reclamation Facility

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SECTION 1.0 BACKGROUND

1.1 SUMMARY

Project Title: Yreka Dollar General

Lead Agency Name and Address: City of Yreka 701 Fourth Street Yreka, CA 96097 Contact Person and Phone Number: Liz Casson, City Clerk (530) 841-2324

Project Location: The Project is located on the north side of Montague Road / State Route 3 between N. Main Street and Deer Creek Way in the City of Yreka. Interstate 5 is 0.2 mile to the east. The site is located in Section 23 of Township 45 North, Range 07 West of the Mount Diablo Base and Meridian. The approximate center of the site is located at latitude 41º44’25” N and longitude 122º37”54” W.

General Plan Designation: GC (General Commercial)

Zoning: CT (Commercial Tourist)

1.2 INTRODUCTION

The City of Yreka (City) is the Lead Agency for this Initial Study. The Initial Study has been prepared to identify and assess the anticipated environmental impacts of the Yreka Dollar General Project (Project or proposed Project). This document has been prepared to satisfy the California Environmental Quality Act (CEQA) (Pub. Res. Code, Section 21000 et seq.) and State CEQA Guidelines (14 CCR 15000 et seq.). CEQA requires that all state and local government agencies consider the environmental consequences of Projects over which they have discretionary authority before acting on those Projects. A CEQA Initial Study is generally used to determine which CEQA document is appropriate for a Project (Negative Declaration [ND], Mitigated Negative Declaration [MND], or Environmental Impact Report [EIR]).

In accordance with CEQA Guidelines Section 15063, an environmental impact report (EIR) must be prepared if an initial study indicates that the proposed project under review may have a potentially significant impact on the environment that cannot be initially avoided or mitigated to a level that is

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Draft Initial Study and Mitigated Negative Declaration Dollar General Retail Store less than significant. A negative declaration may be prepared if the lead agency also prepares a written statement describing the reasons why the proposed project would not have a significant effect on the environment and therefore why it does not require the preparation of an EIR (CEQA Guidelines Section 15371). According to CEQA Guidelines Section 15070, a negative declaration shall be prepared for a project subject to CEQA when either:

a) The initial study shows there is no substantial evidence, in light of the whole record before the agency, that the proposed project may have a significant effect on the environment, or

b) The initial study identifies potentially significant effects, but:

(1) Revisions in the project plans or proposals made by or agreed to by the applicant before the proposed negative declaration is released for public review would avoid the effects or mitigate the effects to a point where clearly no significant effects would occur; and

(2) There is no substantial evidence, in light of the whole record before the agency, that the proposed project as revised may have a significant effect on the environment.

If revisions are adopted in the proposed project in accordance with CEQA Guidelines Section 15070(b), including the adoption of mitigation measures included in this document, a mitigated negative declaration is prepared.

This Initial Study document, with supporting analysis, concludes that a MND is the appropriate CEQA document for the Yreka Dollar General Project.

1.3 LEAD AGENCY

The lead agency is the public agency with primary responsibility over a proposed project. Where two or more public agencies will be involved with a project, CEQA Guidelines Section 15051 provides criteria for identifying the lead agency. In accordance with CEQA Guidelines Section 15051(b)(1), “the lead agency will normally be the agency with general governmental powers, such as a city or county, rather than an agency with a single or limited purpose.” Based on the criteria above, the City of Yreka (City) is the lead agency for the proposed Yreka Dollar General Project.

1.4 PURPOSE AND DOCUMENT ORGANIZATION

The purpose of this Initial Study is to evaluate the potential environmental impacts of the proposed Yreka Dollar General Project. This document is divided into the following sections:

1.0 Introduction – This section provides an introduction and describes the purpose and organization of the document. This section provides general information regarding the Project, including the Project title, lead agency and address, contact person, brief description of the Project location, General Plan land use designation, zoning district, identification of surrounding land uses.

2.0 Project Description – This section provides a detailed description of the proposed Project, as well as the identification of other public agencies whose review, approval, and/or permits may be

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Draft Initial Study and Mitigated Negative Declaration Dollar General Retail Store required. Also listed in this section is a checklist of the environmental factors that are potentially affected by the Project.

3.0 Environmental Factors Potentially Affected and Determinations – This section is a summary of the environmental topic areas that were found to potentially impact the environment.

4.0 Environmental Checklist and Discussion – This section describes the environmental setting and overview for each of the environmental subject areas, evaluates a range of impacts classified as “no impact,” “less than significant impact,” “less than significant impact with mitigation incorporated,” and “potentially significant impact” in response to the environmental checklist.

5.0 List of Preparers – This section lists the names of documents preparers.

6.0 Bibliography – This section identifies documents, websites, people, and other sources consulted during the preparation of this Initial Study.

7.0 List of Appendices – This section provides a list of document appendices

1.5 PROJECT LOCATION

As illustrated in Figure 1. Project Vicinity and Figure 2. Location Map, the proposed Yreka Dollar General is located on the north side of Montague Road / State Route (SR) 3 between N. Main Street and Deer Creek Way in the City of Yreka. Interstate 5 (I-5) is 0.2 mile to the east.

1.6 SURROUNDING LAND USES/ENVIRONMENTAL SETTING

The proposed Project is located in the northern portion of the City of Yreka. The site is vacant of structures and relatively flat, gently sloping from west to east. There are two existing mature trees on-site. The northern portion of the site contains an intermittent stream/riparian corridor which serves to drain stormwater originating in the hills to the west of Yreka, through northern Yreka, until its connection to Yreka Creek.

This intermittent stream meanders through the northern part of Yreka through a series of underground culverts, channelized drainage canals, and fragmented natural stream segments. It enters the Project site from the property adjacent to the west from an underground culvert. The upper 15-25 feet of the portion of this stream traversing the Project site has been recently disturbed (filled) and the associated riparian vegetation largely removed. The filled streambed contains a recently positioned pipe intended to be permanently installed in a manner to accommodate development on the Project site.

The Project site is zoned CT (Commercial Tourist) and surrounded by lands zoned the same. West of the Project site is commercial and office buildings with N. Main Street, a commercial hotel, and Yreka High School beyond. To the east of the site is a commercial hotel with open space and I-5 beyond. To the north of the site lays vacant, disturbed lands (City Corporation Yard) and to the south is a commercial shopping center anchored by a grocery store.

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SECTION 2.0 PROJECT DESCRIPTION

2.1 PROJECT SETTING

The proposed Project is located in Yreka in Siskiyou County, California. Yreka is located approximately 21 miles south of the California- border. I-5, SR 3, and SR 263 pass through and provide regional access to the City. The Project site is located in northern Yreka on 0.925 acres of a 3.43-acre parcel (APN 053-591-380), on the north side of Montague Road / SR 3 between N. Main Street and Deer Creek Way. I-5 is 0.2 mile to the east.

As previously described, the site is vacant of structures and relatively flat, gently sloping from west to east. The northern portion of the site contains a previously disturbed intermittent stream and riparian corridor. The California Department of Fish and Wildlife (CDFW) defines riparian habitat as “lands which contain habitat which grows close to and which depends upon soil moisture from a nearby freshwater source.” This portion of the Project site is subject to CDFW jurisdiction. Representative riparian species within this disturbed riparian community include few-seeded bittercress, curly dock, wooly mullein, and poison hemlock. There are two mature trees on-site (box elder trees), existing on the western boundary near the southwest corner of the site. Ruderal grassland occurs throughout the remainder of the Project site and is represented by yellow starthistle, red-stemmed filaree, rabbitbrush, cleavers, whitlow grass, medusahead, and bulbous bluegrass.

The Project’s surrounding vicinity is urban and consists of vacant lands and commercial buildings.

The Project site has a City General Plan designation of General Commercial, which as defined by the General Plan, is a designation to accommodate larger commercial buildings located on parcels that can accommodate parking. Buildings are typically stand-alone and oriented more to vehicles than pedestrians. The Project site is zoned Commercial Tourist. This zone district is intended to serve and accommodate the needs of the traveling public and is primarily located at or near freeway interchanges. This zone district provides a variety of commercial uses, and is consistent with the General Commercial Land Use Designation.

2.2 PROJECT OVERVIEW

The Project consists of the development of a 9,100-square foot Dollar General retail store on 0.925 acres of a 3.43-acre parcel (see Figure 3. Project Site Plan). The retail store would reach a maximum 21.5 feet in height and include 7,343 square feet of retail sales area, a 190-square foot loading area, with a storage area constituting the remaining square footage. In addition to the retail store building, the Project proposes a 17,583-square foot parking lot with 36 parking spaces. There would also be 4 bicycle parking facilities. The Project would include 11,570 square feet of landscaped areas and proposes to plant seven trees on-site. A 3.5-foot high retaining wall would be constructed on the eastern boundary of the site while the existing retaining wall and fence spanning the western

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Draft Initial Study and Mitigated Negative Declaration Dollar General Retail Store boundary are proposed to remain. Stormwater retention areas would be located along the southern portion of the Project site.

The store would operate between the hours of 8:00 a.m. and 10:00 p.m. daily with four employees staffed during the largest shift. The Project applicant anticipates a total staff of 6 – 8 employees.

For the purposes of this analysis, it is assumed that construction will begin during the 2018 construction year and be completed by 2019. However, construction can be accelerated or delayed based on design progress, environmental conditions, available funding, weather, or other factors.

2.3 PROJECT APPROVALS

The City of Yreka is the lead agency for this project. In order to approve the proposed Project, the City of Yreka must first adopt the IS/MND, approve the proposed Project, and file a Notice of Determination (NOD) within five working days. The City Council will consider the information contained in the IS/MND in making its decision to approve or deny the proposed Project. The IS/MND is intended to disclose to the public the proposed Project’s details, analyses of the proposed Project’s potential environment impacts, and identification of feasible mitigation that will reduce potentially significant impacts to less than significant levels.

In addition, permits and/or approvals would be required from the following agencies:

North Coast Regional Water Quality Control Board (RWQCB)

The North Coast Regional Water Quality Control Board (RWQCB) typically requires that a Construction General Permit be obtained for projects that disturb more than 1 acre of soil. Typical conditions issued with such a permit include the submittal of and adherence to a stormwater pollution and prevention plan (SWPPP), as well as prohibitions on the release of oils, grease, or other hazardous materials.

Siskiyou County Air Pollution Control District (SCAPCD)

The proposed Project is located in an area falling under the jurisdiction of the Siskiyou County Air Pollution Control District. The Project applicant will be required to obtain approval of a dust control plan from the District prior to any soil disturbing activities on the site.

California Department of Transportation (Caltrans)

A portion of the proposed Project would be located within a California Department of Transportation right-of-way for SR 3 (Montague Road). The Project applicant will be required to obtain an encroachment permit from Caltrans prior to any work within the Caltrans right-of-way.

California Department of Fish and Wildlife

As previously stated, the northern portion of the site contains a previously disturbed intermittent stream and riparian corridor. Specifically, the upper 15-25 feet of the portion of this stream

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Draft Initial Study and Mitigated Negative Declaration Dollar General Retail Store traversing the Project site has been recently filled and the associated riparian vegetation largely removed. The proposed Project will need to obtain the proper CDFW permits for this action before moving forward with Project construction. Sections 1601 to 1606 of the Fish and Game Code (FGC) require that a Streambed Alteration Application be submitted to the CDFW for “any activity that may substantially divert or obstruct the natural flow or substantially change the bed, channel, or bank of any river, stream, or lake.” The CDFW reviews the proposed actions and, if necessary, submits to the applicant a proposal for measures to protect affected fish and wildlife resources. The final proposal that is mutually agreed upon by the CDFW and the applicant is the Streambed Alteration Agreement. Projects that require a Streambed Alteration Agreement may also require a permit from the U.S. Army Corps of Engineers (USACE) under Section 404 of the Clean Water Act (CWA). In these instances, the conditions of the Section 404 permit and the Streambed Alteration Agreement may overlap.

U.S. Army Corps of Engineers

The northern portion of the site contains a previously disturbed intermittent stream. The stream has been partially filled and contains a recently positioned pipe intended to be permanently installed in a manner to accommodate development on the Project site. The proposed Project will need to obtain the proper USACE permits for this action before moving forward with Project construction. Section 401 of the Clean Water Act requires any applicant for a federal license or permit to conduct any activity that may result in a discharge of a pollutant into waters of the United States to obtain certification that the discharge will comply with the applicable effluent limitations and water quality standards. The appropriate RWQCB (in California) regulates Section 401 requirements. Section 404 of the Clean Water Act prohibits the discharge of dredged or fill material into “waters of the United States” without a permit from the USACE. The USACE and the U.S. Environmental Protection Agency administer the act. In addition to streams with a defined bed and bank, the definition of waters of the U.S. includes wetland areas “that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions” (33 CFR 328.3 7b).

2.4 RELATIONSHIP OF PROJECT TO OTHER PLANS

City of Yreka General Plan

The proposed Project would be located in Yreka. The City of Yreka General Plan was updated in 2002–2003 and adopted by the City Council on December 18, 2003. The General Plan is the fundamental document governing land use development in the incorporated areas of the City. It includes numerous goals and policies pertaining to land use, circulation, housing, conservation, open space, parks and recreation, noise, public health and safety, and public facilities. The proposed Project will be required to abide by all applicable goals and policies included in the adopted General Plan.

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City of Yreka Flood Damage Prevention Ordinance

The Project will not be subject to the City’s Flood Damage Prevention Ordinance (Municipal Code Chapter 11.34), which regulates improvements in flood zones. Chapter 11.34 applies to special flood hazard areas, which are defined as areas having special flood or flood-related erosion hazards and shown on a Flood Hazard Boundary Map (FHBM) or Flood Insurance Rate Map (FIRM) as Zone A, AO, A1-30, AE, A99, or AH. The Project site is shown on FEMA FIRM Map 06093C1557D. The proposed Project site is located in Flood Zone X, meaning that no portion of the site is located within the 100- year floodplain (FEMA 2011). Therefore, the Project is not subject to the requirements of Chapter 11.34.

City of Yreka Stormwater Quality Management & Discharge Control Ordinance

The Project will be subject to the City’s Stormwater Quality Management & Discharge Control Ordinance (Municipal Code Chapter 12.40). The City of Yreka is a Phase II, Small MS4 permittee under the "Waste Discharge Requirements for Municipal Separate Storm Sewer System (MS4) Discharges". The purpose and intent of this ordinance is to comply with the requirements imposed upon the City in the Phase II Small MS4 permit and to protect and promote the health, safety, and general welfare of citizens, and protect and enhance the water quality of watercourses, water bodies, and wetlands in a manner pursuant to and consistent with the Federal Clean Water Act (33 U.S.C. §1251 et seq.), and the Porter-Cologne Water Quality Control Act (California Water Code Section 13000 et seq.), so that, to the maximum extent practicable, stormwater will not cause or contribute to any exceedances of water quality standards contained in the statewide Water Quality Control Plan, the California Toxics Rule, or in the North Coast RWQCB Basin Plan amended and supplanted, and by prohibiting non-stormwater discharges to the storm drain system, excepting non-significant non- stormwater contributors.

2.5 CONSULTATION WITH CALIFORNIA NATIVE AMERICAN TRIBE(S)

Native American consultation letters were sent to the recognized Tribes in Siskiyou County. No cultural concerns with the Project were received. Further information on potential Tribal Cultural Resources in the Project area is provided in Section 4.17 of this Initial Study.

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SECTION 3.0 ENVIRONMENTAL FACTORS POTENTIALLY AFFECTED AND DETERMINATION

3.1 Environmental Factors Potentially Affected

The environmental factors checked below would be potentially affected by this Project, involving at least one impact that is a “Potentially Significant Impact” as indicated by the checklist on the following pages.

Aesthetics Hazards/Hazardous Materials Public Services

Agriculture and Forestry Resources Hydrology/Water Quality Recreation

Air Quality Land Use and Planning Transportation/Traffic

Biological Resources Mineral Resources Tribal Cultural Resources

Cultural Resources Noise Utilities and Service Systems

Geology and Soils Paleontological Resources Mandatory Findings of Significance

Greenhouse Gas Emissions Population and Housing

Determination

On the basis of this initial evaluation:

I find that the Project COULD NOT have a significant effect on the environment, and a NEGATIVE

DECLARATION will be prepared. I find that although the Project could have a significant effect on the environment, there will not be a significant effect in this case because revisions in the project have been made by or agreed to by the project proponent. A MITIGATED NEGATIVE DECLARATION will be prepared. I find that the Project MAY have a significant effect on the environment, and an ENVIRONMENTAL

IMPACT REPORT is required. I find that the Project MAY have a “potentially significant impact” or “potentially significant unless mitigated” impact on the environment but at least one effect 1) has been adequately analyzed in an earlier document pursuant to applicable legal standards, and 2) has been addressed by

mitigation measures based on the earlier analysis as described on attached sheets. An ENVIRONMENTAL IMPACT REPORT is required, but it must analyze only the effects that remain to be addressed. I find that although the Project could have a significant effect on the environment, because all potentially significant effects (a) have been analyzed adequately in an earlier EIR or NEGATIVE DECLARATION pursuant to applicable standards, and (b) have been avoided or mitigated pursuant to that earlier EIR or NEGATIVE DECLARATION, including revisions or mitigation measures that are imposed upon the Project, nothing further is required.

Steve Baker Date City Manager

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SECTION 4.0 ENVIRONMENTAL CHECKLIST AND DISCUSSION

4.1 Aesthetics

4.1.1 Environmental Setting

Yreka is in an area considered to have high scenic value, located in a valley surrounded by mountains in the Klamath National Forest on the north and west, Shasta Valley to the east, and the Kilgore Hills to the southeast. Nearby mountains rise 300 to 4,000 feet above Yreka and provide an attractive backdrop. Some areas of the City have longer views to the Siskiyou and Cascade ranges to the north and east, with Mount Shasta as the prominent feature to the southeast. Mount Shasta is a dormant volcano, 14,179 feet in elevation. The near mountain ranges are covered with pine forests and oak trees. Winter brings snows to the higher elevations, while spring brings green hills and the fresh foliage of deciduous trees. Fall color in the oaks brings a bright gold, which contrasts with the green of pines. These views are readily seen from most residential areas and are visible from major highways traversing the City (i.e., I-5, SR 3, and SR 263).

While a segment of I-5 (SR 3 near Yreka/Oregon State Line near Hilt) is listed as an eligible scenic highway, there are no locally designated or state scenic highways adjacent to or within the vicinity of the Project site (DOT 2017).

The Project site is devoid of any topographical features and does not contain any feature or element that could be considered scenic or that is designated as scenic by the City or the State. Additionally, I-5 is located 0.2 miles east of the Project. As such, the Proposed Project will not obstruct or otherwise interfere with any views from off-site roadway vantage points.

4.1.2 Aesthetics (I) Environmental Checklist and Discussion

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact a) Have a substantial adverse effect on a scenic

vista?

A scenic vista is a viewpoint that provides expansive views of a highly valued landscape for the benefit of the general public. As previously described, Yreka is distinguished with its views of the Siskiyou and Cascade ranges to the north and east and Mount Shasta to the southeast.

The Project site is located just west of I-5 in the northern portion of Yreka within a cluster of small- scale commercial operations. The Project’s surrounding vicinity is urban. The Project site does not contain unique visual features that would distinguish it from surrounding areas nor is it located within a designated scenic vista. In addition, there are no distinct or distinguishing rock features on the Project site. The Project proposes a single-story building with a maximum building height of 21.5

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Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact b) Substantially damage scenic resources, including, but not limited to, trees, rock outcroppings, and historic buildings within a state scenic highway?

While a segment of I-5 (SR 3 near Yreka/Oregon State Line near Hilt) is listed as an eligible scenic highway, it has not been formally designated as such. Furthermore, there are no locally designated or state scenic highways adjacent to or within the vicinity of the Project site. No impact would occur.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact c) Substantially degrade the existing visual character or quality of the site and its surroundings?

The Project site is located in the northern portion of the City and is bounded by a combination of vacant lands and a scattering of commercial buildings. The Project site is a vacant lot and as previously stated, the northern portion of the site contains a previously disturbed riparian corridor.

The proposed Project would result in the construction of a new 9,100-square foot retail store. Parking facilities are also a part of the Project. These Project elements may result in a change to the visual character of the site by increasing the number of urban structures on otherwise vacant land. However, the site is designated and zoned for commercial land uses and therefore intended to accommodate commercial development under the Yreka General Plan. The proposed Project would be required to comply with development review guidelines mandated under City Municipal Code Chapter 15.32, Design Standards and Required Improvements, which would ensure that the proposed Project would be constructed consistent with the surrounding commercial neighborhood. Therefore, construction of the Project would not substantially degrade the character of the site or its surroundings, as the new retail store building would be consistent with existing development in the area. This impact is less than significant.

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Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact d) Would the project create a new source of substantial light or glare, which would adversely affect day or nighttime views in the area?

The proposed Project would result in a new building and parking area, both of which may result in an increase of artificial light and glare into the existing environment. Potential sources of light and glare include external building lighting, parking lot lighting, an illuminated sign, security lighting, building windows, and reflective building materials. The introduction of new sources of light and glare may contribute to nighttime light pollution and result in impacts to nighttime views in the area.

Adherence to City Municipal Code Chapter 13.10, General Standards, requires that all electric signs and outline lighting in Yreka comply with Article 600 of the current edition of the California Building Code. Therefore, all new lighting from the Project will be required to be shielded and directed so as to not allow light to penetrate off-site.

The new building would be painted in a manner that precludes bare metal surfaces, a potential source of glare. The roof would be constructed of non-reflective material. The proposed windows are scattered, and no single large bank of windows is included. This design would reduce the potential for window glare.

The proposed Project would be required to comply with development review guidelines mandated under City Municipal Code Chapter 15.32, Design Standards and Required Improvements, which would ensure that the proposed Project would be constructed consistent to City of Yreka standards. Specifically, the Project will be required to obtain a building permit and approval from the Yreka Building Official prior to the installation of any electrical sign or outdoor lighting. The impact would be less than significant.

4.1.3 Mitigation Measures

No significant impacts were identified, and no mitigation measures are required.

4.2 Agriculture and Forestry Resources

4.2.1 Environmental Setting

The California Department of Conservation manages a Farmland Mapping and Monitoring Program (FMMP), which identifies and maps significant farmland. The classification of farmland as Important Farmland (i.e., Prime Farmland, Unique Farmland, and Farmland of Statewide Importance) is based on the suitability of soils for agricultural production, as determined by a soil survey conducted by the Natural Resources Conservation Service (NRCS). An FMMP map has been prepared for Siskiyou

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County that includes the Project area. The Siskiyou County FMMP map classifies these areas of the Project site as Urban and Built-Up Land (DOC 2017). Furthermore, the Project site is zoned for commercial uses. There are no Williamson Act or Timber Preserve contracted lands within or adjacent to the project site (DOC 2016).

4.2.2 Agriculture and Forestry Resources (II) Environmental Checklist and Discussion

Less than Significant Potentially With Less than Would the Project: Significant Mitigation Significant No Impact Incorporated Impact Impact a) Convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (Farmland), as shown on the maps prepared pursuant to the

Farmland Mapping and Monitoring Program of the California Resources Agency, to non- agricultural use?

The Siskiyou County FMMP map classifies the Project site as Urban and Built-Up Land (DOC 2017). Therefore, the proposed Project would not result in the loss of Important Farmland as defined by the California Department of Conservation. No impact would occur.

Less than Significant Potentially With Less than Would the Project: Significant Mitigation Significant No Impact Incorporated Impact Impact b) Conflict with existing zoning for agricultural use,

or a Williamson Act contract?

The Project site is not under a Williamson Act contract, nor are any lands near the Project site subject to a Williamson Act contract (DOC 2016). Additionally, the Project site is zoned Commercial Tourist. As such, the proposed Project would not conflict with any existing Williamson Act contract lands. No impact would occur.

Less than Significant Potentially With Less than Would the Project: Significant Mitigation Significant No Impact Incorporated Impact Impact c) Conflict with existing zoning for, or cause rezoning of, forest land (as defined in Public Resources Code section 12220(g)), timberland (as

defined by Public Resources Code section 4526), or timberland zoned Timberland Production (as defined by Government Code section 51104(g))?

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The Project site does not contain any forest resources, nor is it zoned for forest use. No impact would occur.

Less than Significant Potentially With Less than Would the project: Significant Mitigation Significant No Impact Incorporated Impact Impact d) Result in the loss of forest land or conversion of

forest land to non-forest use?

No forest lands exist on the Project site or within the vicinity of the Project. The Project would have no impact in this area.

Less than Significant Potentially With Less than Would the project: Significant Mitigation Significant No Impact Incorporated Impact Impact e) Involve other changes in the existing environment, which, due to their location or nature, could result in conversion of Farmland to non-agricultural use or conversion of forest land to non-forest use?

The proposed Project site and surrounding land is identified as Urban and Built-Up Land by the DOC. No existing agricultural uses or forest land exist within the Project vicinity. The Project would have no impact in this area.

4.2.3 Mitigation Measures

No significant impacts were identified, and no mitigation measures are required.

4.3 Air Quality

4.3.1 Environmental Setting

Yreka and the Project site are located in a region identified as the Northeast Plateau Air Basin (NPAB), which principally includes Siskiyou, Modoc, and Lassen counties. This larger air basin is divided into local air districts, which are charged with the responsibility of implementing air quality programs. The local air quality agency affecting Yreka is the Siskiyou County Air Pollution Control District (SCAPCD). Within the SCAPCD, the primary sources of air pollution are wood-burning stoves, wildfires, farming operations, unpaved road dust, managed burning and disposal, and motor vehicles. The Project site is currently vacant.

The SCAPCD adopts and enforces controls on stationary sources of air pollutants through its permit and inspection programs and regulates agricultural and nonagricultural burning. Other district

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Ambient Air Quality Standards

Air quality standards are set at both the federal and state levels of government. The federal Clean Air Act requires the US Environmental Protection Agency (EPA) to establish ambient air quality standards for six criteria air pollutants: ozone (O3), carbon monoxide (CO), nitrogen dioxide (NO2), sulfur dioxide (SO2), lead, coarse particulate matter (PM10), and fine particulate matter (PM2.5). The California Clean Air Act also sets ambient air quality standards. The state standards are more stringent than the federal standards, and they include other pollutants in addition to those regulated by the federal standards. When the concentrations of pollutants are below the maximum allowed standards in an area, that area is considered to be in attainment of the standards. Yreka has been designated as an attainment area for all six criteria air pollutants, as the air quality meets all state and federal standards.

4.3.2 Air Quality (III) Environmental Checklist and Discussion

Less than Significant Potentially With Less than Would the Project: Significant Mitigation Significant No Impact Incorporated Impact Impact a) Conflict with or obstruct implementation of the

applicable air quality plan?

The Project site lies within the boundaries of the NPAB. While the other counties in the air basin are identified as currently being in nonattainment for exceeding state criteria pollutant levels for particulate matter, Siskiyou County and Yreka are identified as being in attainment or unclassified for all federal and state air quality standards (CARB 2017). As such, Siskiyou County is not subject to an air quality plan. No impact would occur.

Less than Significant Potentially With Less than Would the Project: Significant Mitigation Significant No Impact Incorporated Impact Impact b) Violate any air quality standard or contribute substantially to an existing or projected air quality violation?

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As noted above, Siskiyou County and Yreka are in attainment or unclassified for federal and state air quality standards. However, the proposed Project could result in air quality impacts during construction and operation.

Construction Impacts

The proposed Project would result in short-term emissions from construction activities. Construction- generated emissions are short term and of temporary duration, lasting only as long as construction activities occur. Emissions commonly associated with construction activities include fugitive dust from soil disturbance. During construction, fugitive dust, the dominant source of particulate matter emissions, is generated when wheels or blades disturb surface materials. Uncontrolled dust from construction can become a nuisance and potential health hazard to those living and working nearby. Emissions of airborne particulate matter are largely dependent on the amount of ground disturbance associated with site preparation activities.

While some particulate matter (i.e., dust) may be generated as a result of construction activities, implementation of mitigation measure MM AQ-1 addresses construction-related dust control measures consistent with SCAQMD recommendations and would reduce this impact to a level that is less than significant.

Long-Term Operational Impacts

Operational air quality impacts would include emissions from Project-generated vehicle traffic and facility operations, including energy usage and landscape maintenance equipment. Thresholds of significance illustrate the extent of an impact and are a basis from which to apply mitigation measures. Because the SCAPCD has no established thresholds under CEQA for the assessment of air quality impacts, the North Coast Unified Air Quality Management District’s (NCUAQMD) thresholds of significance will be used for the evaluation of operational air quality impacts for the purpose of this analysis. These thresholds are consistent with the New Source Review Rule 110 adopted by the Air Quality Management District as required by the California Clean Air Act. The thresholds of significance are summarized in Table 4.3-1.

Table 4.3-1. NCUAQMD Thresholds of Significance (Proxy Thresholds for Analysis Purposes) Emissions (Maximum Pounds/ Day) Threshold ROG NOx CO PM10 PM2.5 Significance Thresholds 50 50 500 80 50 Source: NCUAQMD 2010 Note: The SCAPCD does not have adopted thresholds of significance. Proxy thresholds from the North Coast Unified AQMD were used to facilitate the analysis for this section as described above.

The predicted maximum daily emissions associated with Project operations are summarized in Table 4.3-2. The projected criteria pollutant emissions were estimated by ECORP Consulting, Inc. using the California Emissions Estimator Model (CalEEMod) version 2016.3.2. Modeling details are included in Appendix A.

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Table 4.3-2. Project-Related Criteria Air Pollutants Pollutant (Maximum Pounds/ Day) Threshold ROG NOx CO PM10 PM2.5 Summer Emissions Area Source 0.27 0.00 0.01 0.00 0.00 Energy Source 0.00 0.02 0.01 0.00 0.00 Mobile Source 1.99 15.11 16.32 2.24 0.64 Total 2.26 15.13 16.34 2.24 0.64 NCUAQMD Significance Thresholds 50 50 500 80 50 Exceed NCUAQMD Thresholds? No No No No No Winter Emissions Area Source 0.27 0.00 0.01 0.00 0.00 Energy Source 0.00 0.02 0.01 0.00 0.00 Mobile Source 1.99 15.64 20.51 2.24 0.65 Total 2.26 15.66 20.53 2.24 0.65 NCUAQMD Significance Thresholds 50 50 500 80 50 Exceed NCUAQMD Thresholds? No No No No No Source: Emissions were calculated by ECORP Consulting using CalEEMod 2016.3.2. Refer to Appendix A for Model Data Outputs.

As shown, all criteria pollutant emissions would remain below their respective thresholds during Project operations. Operational air quality impacts are less than significant.

Less than Significant Potentially With Less than Would the Project: Significant Mitigation Significant No Impact Incorporated Impact Impact c) Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is non-attainment under an applicable

federal or state ambient air quality standard (including releasing emissions which exceed quantitative thresholds for ozone precursors)?

Siskiyou County is in attainment or is identified as unclassified for all monitored air quality standards. In addition, as demonstrated under Response 4.3(b) Long-Term Operational Impacts above, significance thresholds would not be surpassed. Therefore, no cumulative considerable net increase of criteria pollutants will result from the Project. A less than significant impact would occur.

Less than Significant Potentially With Less than Would the Project: Significant Mitigation Significant No Impact Incorporated Impact Impact d) Expose sensitive receptors to substantial

pollutant concentrations?

Sensitive receptors are defined as facilities or land uses that include members of the population that are particularly sensitive to the effects of air pollutants, such as children, the elderly, and people with illnesses. Examples of these sensitive receptors are residences, schools, hospitals, and daycare

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Construction Impacts

Diesel Particulate Matter

Construction-related activities would result in temporary, short-term Project-generated emissions of diesel particulate matter (DPM) from the exhaust of off-road, heavy-duty diesel equipment for site preparation (e.g., clearing, grading); paving; application of architectural coatings; and other miscellaneous activities. For construction activity, DPM is the primary toxic air contaminant (TAC) of concern. Particulate exhaust emissions from diesel-fueled engines (i.e., DPM) were identified as a TAC by CARB in 1998. The potential cancer risk from the inhalation of DPM, as discussed below, outweighs the potential for all other health impacts (i.e., non-cancer chronic risk, short-term acute risk) and health impacts from other TACs. Accordingly, DPM is the focus of this discussion.

Based on the emission modeling conducted, the maximum construction-related daily emissions of exhaust PM2.5, considered a surrogate for DPM, would be 1.29 pounds/day during construction activity (see Appendix A). (PM2.5 exhaust is considered a surrogate for DPM because more than 90 percent of DPM is less than 1 microgram in diameter and therefore is a subset of particulate matter under 2.5 microns in diameter (i.e., PM2.5), according to CARB. Most PM2.5 derives from combustion, such as use of gasoline and diesel fuels by motor vehicles.) Even during the most intense month of construction, emissions of DPM would be generated from different locations on the Project site, rather than a single location, because different types of construction activities (e.g., site preparation, building construction) would not occur at the same place at the same time.

The dose to which receptors are exposed is the primary factor used to determine health risk (i.e., potential exposure to TAC emission levels that exceed applicable standards). Dose is a function of the concentration of a substance or substances in the environment and the duration of exposure to the substance. Dose is positively correlated with time, meaning that a longer exposure period would result in a higher exposure level for any exposed receptor. Thus, the risks estimated for an exposed individual are higher if a fixed exposure occurs over a longer period of time. According to the Office of Environmental Health Hazard Assessment (OEHHA), health risk assessments, which determine the exposure of sensitive receptors to TAC emissions, should be based on a 70- or 30-year exposure period; however, such assessments should be limited to the period/duration of activities associated with the proposed Project. Consequently, an important consideration is that the use of off-road heavy-duty diesel equipment would be limited to the periods of construction, for which most diesel- powered off-road equipment use would occur over approximately a 5-month period. Therefore, considering the relatively low mass of DPM emissions that would be generated during even the most intense season of construction, the relatively short duration of construction activities (5 months), and

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Naturally Occurring Asbestos

Another potential air quality issue associated with construction-related activities is the airborne entrainment of asbestos due to the disturbance of naturally-occurring asbestos-containing soils. The proposed Project is located within an area designated by the State of California as likely to contain naturally-occurring asbestos (DOC 2000). As a result, mitigation measure MM AQ-2 is required during construction-related activities in order to reduce exposure of sensitive land uses to asbestos to a less than significant level.

Long-Term Operational Impacts

Carbon Monoxide Hot Spots

It has long been recognized that CO exceedances are caused by vehicular emissions, primarily when idling at intersections. Concentrations of CO are a direct function of the number of vehicles, length of delay, and traffic flow conditions. Under certain meteorological conditions, CO concentrations close to congested intersections that experience high levels of traffic and elevated background concentrations may reach unhealthy levels, affecting nearby sensitive receptors. Given the high traffic volume potential, areas of high CO concentrations, or “hot spots,” are typically associated with intersections that are projected to operate at unacceptable levels of service during the peak commute hours. However, transport of this criteria pollutant is extremely limited, and CO disperses rapidly with distance from the source under normal meteorological conditions. Furthermore, vehicle emissions standards have become increasingly more stringent in the last 20 years. Currently, the CO standard in California is a maximum of 3.4 grams per mile for passenger cars (requirements for certain vehicles are more stringent). With the turnover of older vehicles, introduction of cleaner fuels, and implementation of control technology on industrial facilities, CO concentrations in the Project vicinity have steadily declined.

Accordingly, with the steadily decreasing CO emissions from vehicles, even very busy intersections do not result in exceedances of the CO standard. The analysis prepared for CO attainment in the South Coast Air Quality Management District 1992 Federal Attainment Plan for Carbon Monoxide (SCAQMD 1992) in Southern California can be used to demonstrate the potential for CO exceedances. The South Coast CO hot spot analysis was conducted for four busy intersections in Los Angeles County during the peak morning and afternoon time periods. The intersections evaluated included Long Beach Boulevard and Imperial Highway (Lynwood), Wilshire Boulevard and Veteran Avenue (Westwood), Sunset Boulevard and Highland Avenue (Hollywood), and La Cienega Boulevard and Century Boulevard (Inglewood). The busiest intersection evaluated was at Wilshire Boulevard and Veteran Avenue, which has a traffic volume of approximately 100,000 vehicles per day. The Los Angeles County Metropolitan Transportation Authority evaluated the level of service in the vicinity of the Wilshire Boulevard/Veteran Avenue intersection and found it to be level of service (LOS) E at

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Because the proposed Project would not increase traffic volumes at any intersection to more than 100,000 vehicles per day, there is no likelihood of the Project traffic exceeding CO values. The impact is less than significant.

Less than Significant Potentially With Less than Would the Project: Significant Mitigation Significant No Impact Incorporated Impact Impact e) Create objectionable odors affecting a substantial

number of people?

Offensive odors rarely cause any physical harm; however, they still can be very unpleasant, leading to considerable distress among the public and often generating citizen complaints to local governments and regulatory agencies. Odor impacts on residential areas and other sensitive receptors, such as daycare centers and schools, are of particular concern.

Construction Impacts

The Project may result in temporary and localized odors associated with diesel-powered equipment during construction. However, any such odors would be temporary and would not be in sufficiently high concentrations to affect nearby land uses. The construction impact is less than significant.

Long-Term Operational Impacts

Major operational sources of odor-related complaints by the general public commonly include wastewater treatment facilities, landfill disposal facilities, food processing facilities, agricultural activities, and various industrial activities such as petroleum refineries, chemical and fiberglass manufacturing, painting/coating operations, feedlots/dairies, composting facilities, landfills, and transfer stations. The Project does not include any of these land uses or similar land uses. The operational impact is less than significant.

4.3.3 Mitigation Measures

AQ-1: The following dust control measures shall be incorporated into the project to reduce short- term emissions resulting from construction. Depending on weather and site conditions, measures shall include, but are not limited to, the following:

1. Use regular watering to control dust generation as described below.

2. When transporting soil and other dust-generating materials by truck during construction activities, cover materials and/or maintain 2 feet of freeboard.

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3. Wash or wet-sweep paved streets adjacent to construction sites as necessary to remove accumulated dust.

4. During earth-moving operations, conduct watering as necessary to prevent visible emissions from extending beyond active areas.

5. Water all unpaved roads used for any vehicular traffic at least once per every two hours of active operations and restrict vehicle speed on unpaved roads to 15 miles per hour (mph), or as appropriate to reduce dust.

6. Pave, maintain a wet surface, or apply dust suppressants on all unpaved access roads, parking areas, and staging areas.

7. Suspend land clearing, grading, earth-moving, or excavation activities when winds exceed 20 miles per hour.

8. Cover inactive storage piles of topsoil or landscape materials.

9. Post a publicly visible sign with the number and person to contact regarding dust complaints. This person shall have the authority and responsibility to respond and take corrective action within 24 hours.

10. No temporary asphalt or concrete batch plants will be allowed to operate onsite.

11. Construction staging areas should be located at a distance that would reduce odors and dust emissions from existing schools and residential areas.

Timing/Implementation: During construction activities Monitoring/Enforcement: Siskiyou County Air Pollution Control District; City of Yreka Building Department

AQ-2: The following dust control measures shall be incorporated into the project to reduce the airborne entrainment of asbestos resulting from construction. Depending on weather and site conditions, measures shall include, but are not limited to, the following:

1. Unpaved areas subject to vehicle traffic must be stabilized by being kept adequately wetted, treated with a chemical dust suppressant, or covered with material that contains less than 0.25 percent asbestos.

2. The speed of any vehicles and equipment traveling across unpaved areas must be no more than fifteen (15) miles per hour unless the road surface and surrounding area is sufficiently stabilized to prevent vehicles and equipment traveling more than 15 miles per hour from emitting dust that is visible crossing the project boundaries.

3. Storage piles and disturbed areas not subject to vehicular traffic must be stabilized by being kept adequately wetted, treated with a chemical dust suppressant, or covered with material that contains less than 0.25 percent asbestos.

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4. Activities must be conducted so that no track-out from any road construction project is visible on any paved roadway open to the public.

5. Equipment must be washed down before moving from the property onto a paved public road.

Timing/Implementation: During construction activities Monitoring/Enforcement: Siskiyou County Air Pollution Control District; City of Yreka Building Department

4.4 Biological Resources

The following information was provided by the Biological Resource Assessment (BRA) completed by ECORP Consulting, Inc. The purpose of this biological resources assessment is to assess the potential for occurrence of special-status plant and animal species or their habitat, and sensitive habitats such as wetlands within the Project site. This assessment does not include determinate field surveys conducted according to agency-promulgated protocols. The conclusions and recommendations presented in this report are based upon a review of the available literature and site reconnaissance. The BRA is included as Appendix B of this Initial Study.

4.4.1 Environmental Setting

The proposed Project is located in the northern portion of the City of Yreka, where the surrounding vicinity is urban and consists of vacant lands and commercial buildings. The site is vacant of structures and relatively flat, gently sloping from west to east. The northern portion of the site contains a previously disturbed riparian corridor. A wetland screening conducted on the Project site (see Attachment A of Appendix B) found that this riparian corridor is an intermittent stream serving to drain stormwater originating in the hills to the west of Yreka, through northern Yreka, until its connection to Yreka Creek. This intermittent stream meanders through the northern part of Yreka through a series of underground culverts, channelized drainage canals, and fragmented natural stream segments. It enters the Project site from the property adjacent to the west from an underground culvert. The upper 15-25 feet of the portion of this stream traversing the Project site has been recently disturbed. Also, the streambed contains a recently positioned pipe intended to be permanently installed in a manner to accommodate development on the Project site.

As previously described, the CDFW defines riparian habitat as “lands which contain habitat which grows close to and which depends upon soil moisture from a nearby freshwater source.” This portion of the Project site is subject to CDFW jurisdiction. Representative riparian species within this disturbed riparian community include few-seeded bittercress, curly dock, wooly mullein, and poison hemlock.

There are two mature trees on-site (box elder trees), existing on the western boundary near the southwest corner of the site. Ruderal grassland occurs throughout the remainder of the Project site

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4.4.2 Biological Resources (IV) Environmental Checklist and Discussion

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact a) Have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special

status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Wildlife or U.S. Fish and Wildlife Service?

The BRA prepared for the Project contains a list of special-status species that have the potential to occur within the Project site. Special-status species are defined as plants or animals that meet the following criteria:

 Are listed, proposed for listing, or candidates for future listing as threatened or endangered under the federal Endangered Species Act (ESA);

 Are listed or candidates for future listing as threatened or endangered under the California ESA;

 Meet the definitions of endangered or rare under Section 15380 of the California Environmental Quality Act (CEQA) Guidelines;

 Are identified as a species of special concern by the California Department of Fish and Wildlife (CDFW);

 Are birds identified as birds of conservation concern by the U.S. Fish and Wildlife Service (USFWS);

 Are plants considered by the California Native Plant Society (CNPS) to be "rare, threatened, or endangered in California" (California Rare Plant Rank [CRPR] 1 and 2);

 Are plants listed by CNPS as species about which more information is needed to determine their status (CRPR 3), and plants of limited distribution (CRPR 4);

 Are plants listed as rare under the California Native Plant Protection Act (Fish and Game Code of California, Section 1900 et seq.); or

 Are fully protected in California in accordance with the California Fish and Game Code, Sections 3511 (birds), 4700 (mammals), 5050 (amphibians and reptiles), and 5515 (fishes).

Each of these species’ potential to occur on-site was assessed based on the following criteria:

 Present - Species is known to occur within the Project site based on documented occurrences within the California Natural Diversity Database (CNDDB) or other literature

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 Potential to Occur - Habitat (including soils and elevation requirements) for the species occurs within the Project site

 Low Potential to Occur - Marginal or limited amounts of habitat occurs and/or the species is not known to occur within the vicinity of the Project site based on CNDDB records and other available literature

 Absent - No suitable habitat (including soils and elevation requirements) and/or the species is not known to occur within the vicinity of the Project site based on CNDDB records and other literature

According to the BRA, there are no previously documented occurrences of special-status species within the Project site. However, several special-status species occurrences have been documented within an approximate five-mile radius of the Project site.

Three special-status invertebrate species, as well as three special-status fish species, were identified as having the potential to occur within the Project site based on the literature review. However, upon further analysis, all three invertebrate species and all three special-status fish species were determined to be absent from the Project site due to the lack of suitable habitat. Similarly, two special-status amphibian species, 17 special-status bird species, and one special-status mammal species were identified as having the potential to occur within the Project site based on the literature review; however, upon further analysis all of these special-status species were determined to be absent from the Project site due to the lack of suitable habitat.

Three special-status plant species were determined to have low potential to occur within the Project site. These species include Shasta orthocarpus (Orthocarpus pachystachyus), Siskiyou (Trifolium siskiyouense), and Wooly meadowfoam (Limnanthes flocossa ssp. flocossa). Any Shasta orthocarpus and Wooly meadowfoam on-site would be associated with the site’s annual grassland habitat while any Siskiyou clover would be growing within the streambank of the intermittent stream. As previously described, a low potential to occur means there is marginal or limited amounts of habitat on-site and/or the species is not known to occur within the vicinity of the Project site based on CNDDB records. According to the BRA, the Project site is below the known elevational range of Shasta orthocarpus and Siskiyou clover. Therefore, it is highly unlikely that either of these species would be located on-site. Furthermore, the Project site is highly disturbed, surrounded by urban development, and located in a commercial area of Yreka designated for commercial uses and characterized by existing commercial development. A wetland screening conducted on the Project site (see Attachment A of Appendix B), identified the site’s annual grassland habitat as containing ruderal grassland, yellow starthistle, red-stemmed filaree, rabbitbrush, cleavers, whitlow grass, medusahead, and bulbous bluegrass. The wetland screening identified few-seeded bittercress, curly dock, wooly mullein, and poison hemlock as constituting the plant community along the site’s intermittent streambank. No Shasta orthocarpus, Siskiyou clover, or Wooly meadowfoam was observed.

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One special-status reptile species, the northern western pond turtle, was determined by ECORP biologists to have low potential to occur within the Project site. Northern western pond turtles occur in a variety of fresh and brackish water habitats including marshes, lakes, ponds, and slow moving streams. This species is primarily aquatic; however, they typically leave aquatic habitats in the fall to reproduce and to overwinter. According to the BRA, the stream adjacent to the Project site represents marginal aquatic habitat. This intermittent stream serves to drain stormwater originating in the hills to the west of Yreka, through northern Yreka, until its connection to Yreka Creek. The intermittent stream meanders through the northern part of Yreka through a series of underground culverts, channelized drainage canals, and fragmented natural stream segments. It enters the Project site from the property adjacent to the west from an underground culvert. Due to the unnatural state of this stream, and the fact that it primarily functions to drain stormwater during the winter season, it is not considered suitable to accommodate the northern western pond turtle, which as previously described occur in marshes, lakes, ponds, and slow moving streams. Further, the nearest documented occurrence is approximately 7.1 miles from the Project site.

In summation, there are no previously documented occurrences of special-status species within the Project site. Also, due to the lack of suitable habitat on the site, special-status species do not occur. This impact is less than significant.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact b) Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations, or by the California Department of Fish and Wildlife or U.S. Fish and Wildlife Service?

The Project site is located in a low-density, industrial-commercial area of northern Yreka, dominated by non-native annual plant species. There is an intermittent stream that exists on the site that has previously been filled and stripped of most of the woody riparian vegetation historically present. According to the BRA prepared for the Project site, there are two vegetation communities that occur on-site: ruderal annual grassland and disturbed riparian woodland.

The ruderal grassland occurring along Montague Road is represented by yellow starthistle (Centaurea solstitialis), red-stemmed filaree (Erodium cicutarium), rabbitbrush (Ericameria nauseosa), cleavers (Galium aparine), whitlow grass (Draba verna), medusahead grass (Elymus caput-medusae), and bulbous bluegrass (Poa bulbosa). A few box elders (Acer negundo) occur near the southwest corner of the site.

The area within the Project site that was once riparian woodland is now dominated by herbaceous species. Representative species within this disturbed riparian community include few-seeded bittercress (Cardamine oligosperma), curly dock (Rumex crispus), wooly mullein (Verbascum thapsus),

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The proposed Project will need to obtain the proper CDFW permits for this action before moving forward with Project construction. Sections 1601 to 1606 of the Fish and Game Code (FGC) require that a Streambed Alteration Application be submitted to the CDFW for “any activity that may substantially divert or obstruct the natural flow or substantially change the bed, channel, or bank of any river, stream, or lake.” The Project is proposing to install a stormwater drainage pipe within the on-site intermittent stream. Therefore, the proposed Project will be required to obtain a Streambed Alteration Agreement (SAA) pursuant to Sections 1601 to 1606 of the FGC. CDFW regulates impacts to riparian vegetation through SAAs and is authorized under the FGC to develop mitigation measures and enter into Streambed Alteration Agreements with applicants who propose projects that would obstruct the flow of or alter the bed, channel, or bank of a river or stream in which there is a fish or wildlife resource, including intermittent and ephemeral streams. A SAA typically requires mitigation for impacts associated with both the drainage or stream channel and the riparian areas affected by the crossing. Mitigation measures will be developed during consultation between the Project applicant and CDFW as part of the SAA authorization process to ensure protections to riparian resources. The prior impacts resulting from recent vegetation removal on-site, as well as potential future impacts to riparian vegetation as a result of Project implementation, will be addressed in the SSA. Specifically, the CDFW reviews the proposed actions and, if necessary, submits to the applicant a proposal for measures to protect affected fish and wildlife resources. The final proposal that is mutually agreed upon by the CDFW and the applicant is the SAA. Projects that require a SAA typically also require a permit from the U.S. Army Corps of Engineers (USACE) under Section 404 of the Clean Water Act (CWA). In these instances, which is the case for the proposed Project, the conditions of the Section 404 permit and the Streambed Alteration Agreement may overlap.

Compliance with the various requirements of the SAA will ensure protection of the on-site riparian resources. There is no impact.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact c) Have a substantial adverse effect on federally protected wetlands as defined by Section 404 of the Clean Water Act (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct

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Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact removal, filling, hydrological interruption, or other means?

Prior to 2014 there were approximately 150 linear feet of intermittent stream on the Project site, with approximately 0.25 acre of associated riparian vegetation. Subsequently, the waters of the stream were partially filled (approximately 15 to 25 feet of the stream was filled along its southern extent within the Project site) and approximately 0.22 acre of the riparian vegetation was removed. Section 404 of the Clean Water Act prohibits the discharge of dredged or fill material into “Waters of the United States” without a permit from the USACE. In addition to streams with a defined bed and bank, the definition of Waters of the U.S. includes wetland areas “that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions” (33 CFR 328.3 7b).

The intermittent stream traversing the northern portion of the Project site is identified as a water of the U.S. Therefore, the proposed Project will need to obtain the proper USACE permits for the recent filling of the 15 to 25 feet of this stream before moving forward with Project construction. Mitigation measures will be developed as part of the Section 404 Permit to ensure no net loss of wetland function and values. Specifically, the USACE reviews the proposed actions and submits to the applicant a proposal for measures to protect the impacted resources. Mitigation for direct impacts to Waters of the U.S. typically occur at a minimum 1:1 ratio for direct impacts; however, final mitigation requirements will be developed in consultation with USACE. It is also noted that as part of the Section 404 Permit process, the USACE may require the preparation of a jurisdictional delineation of Waters of the U.S. in order to calculate the above impacts addressed in the 404 applications.

Pursuant to the various USACE requirements, which ensure protection of the on-site wetland resources, Project-related impacts to Waters of the U.S. are less than significant.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact d) Interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites?

According to the BRA prepared for the Project, the Project site is located adjacent to an existing development area to the east, south, and west. There is open land to the north of the Project, but

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Furthermore, the Project site and the City of Yreka is surrounding by large areas of vacant open land; as such, construction of the Project would not impede migratory wildlife. The Project would have no impact on the movement of wildlife.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact e) Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance?

There are currently no adopted or proposed local policies or ordinances that affect the proposed Project. Therefore, no conflict with occur.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact f) Conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community

Conservation Plan, or other approved local, regional, or state habitat conservation plan?

There are currently no adopted or proposed habitat conservation plans, natural community conservation plans, or other approved local, regional, or state habitat conservation plans that affect the proposed project. Therefore, no conflict will occur.

4.4.3 Mitigation Measures

No significant impacts were identified, and no mitigation measures are required.

4.5 Cultural Resources

4.5.1 Cultural Resources Record Search and Literature Review

In 2018, the City of Yreka retained ECORP Consulting, Inc. to conduct a cultural resources records search and literature review for the proposed Project, in order to assess the potential for cultural resources to exist on the property. The literature review was prepared to provide information to support the City’s determination regarding impacts to Historical Resources, as defined by CEQA. For the literature review, ECORP conducted a cultural resources records search and map review for the Project Area. This analysis included a review of cultural resources records and literature on file at the Northeastern Information Center (NEIC) of the California Historical Resources Information System

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(CHRIS), an examination of cultural resources maps for the Project Area, and a Sacred Lands File search by the California Native American Heritage Commission (NAHC). The purpose of this review is to provide an information about the cultural resources sensitivity of the Project Area.

4.5.2 Environmental Setting

The archaeological record of the native population is limited. It is known that at the time of European “discovery,” the area now home to Yreka was settled by the Shasta Indians and used for winter hunting. Typical of increased European settlement, the native population declined during the Gold Rush era.

At the time of initial contact with white populations (circa 1850), the Shasta Indian tribe occupied the Shasta Valley south to the area around what is now the City of Mt. Shasta. Accounts of early travelers, native informants, and early ethnographies also document the existence of the Okwanuchu tribe.

However, little is known about this tribe, except that it was linguistically related to the Shasta tribe. As noted elsewhere in this document, the Project’s surrounding vicinity is urban and the northern portion of the site contains a previously disturbed riparian corridor. As such, the natural integrity of the site has been compromised. As a result, the potential for encountering cultural resources during Project-related activities is considered low.

4.5.3 Cultural Resources (V) Environmental Checklist and Discussion

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact a) Cause a substantial adverse change in the significance of a historical resource as defined in §15064.5?

As previously described, ECORP conducted a cultural resources records search and literature review for the proposed Project, in order to assess the potential for cultural resources to exist on the property. The cultural resources records search was conducted at the NEIC CHRIS, located at California State University – Chico (see Attachment A of Appendix C). The purpose of the records search was to determine the extent of previous surveys within a 0.5-mile (800-meter) radius of the property, and whether previously documented prehistoric or historic archaeological sites, architectural resources, cultural landscapes, or ethnic resources exist within this area.

In addition to the records search, other literature reviewed included survey reports, archaeological site records, historic maps, and listings of resources on the National Register of Historic Places (NRHP), California Register of Historical Resources (CRHR), California Points of Historical Interest, California Historical Landmarks, and National Historic Landmarks. Additionally, ECORP completed a RealQuest Property Search (based on Assessor’s records) and reviewed historic General Land Office

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(GLO) land patent records from the Bureau of Land Management (BLM). ECORP also contacted the NAHC to request a search of its Sacred Lands File for the presence of traditional cultural properties or sacred, religious, or otherwise important Native American resources. ECORP also mailed a letter to the Siskiyou County Historical Society to solicit comments or obtain historical information that the repository might have regarding events, people, or resources of historical significance in the area.

Previous Research

Seven previous cultural resources investigations have been conducted within 0.5 mile of the property, covering approximately 50 percent of the total area surrounding the property within the records search radius (Table 4.5-1). These studies revealed the presence of one historic-age resource within the 0.5-mile radius of the Project Area. The previous surveys were conducted between 1991 and 2015.

Table 4.5-1. Previous Cultural Studies within 0.5 Mile of the Project Site Report Includes Portion Author(s) Report Title Year Number of the APE? Archaeological Inventory Survey City of Yreka Sewer 5755 Peter Jensen 2003 No Improvement Project, Yreka, Siskiyou county, California Archaeological Inventory Report: Yreka Creek R.V. Park 8670 James Rock 2005 No Project for RV-Group Partnership Archaeological Inventory Survey Proposed Yreka Creek Sean Michael 10584 Greenway Development Project c. 8 Acres, City of Yreka, 2009 No Jensen Siskiyou county, California Archaeological Survey and Findings Report Prepared for: Fire 11324 David M. Vann 2010 No Safe Council of Siskiyou County Candice Cook- Archaeological and Historical Resource Report for the Yreka 11702 Slette and Jeff Wastewater Treatment and Collection System Improvement 2012 No LaLande Project State Route 3, State Route 97, and Interstate 5 Encroachment 12842 Brian Ludwig 2015 No Permit Areas – Yreka to Weed Archaeological Survey Report Archaeological Inventory Survey for the Proposed North View 13495 John Furry Estates Subdivision Project Involving c. 110 Acres Located 1991 No North of Yreka, Siskiyou County, California Source: ECORP Consulting 2018; see Appendix C

Literature Review

A search of the NAHC’s Sacred Lands File failed to indicate the presence of Native American cultural resources in Yreka (see Attachment B of Appendix C). A letter was sent to the Siskiyou County History Historical Society on February 28, 2018 to solicit comments or obtain historical information that the repository might have regarding events, people, or resources of historical significance in the area (Attachment A of Appendix C). No response has been received to date. The Office of Historic Preservation’s Directory of Properties, Historic Property Data File for Siskiyou County (dated April 5, 2012) did not include any resources within the Project site or vicinity. The National Register Information System failed to reveal any significant properties within the Project site or vicinity. The

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Resources listed as California Historical Landmarks and on the OHP website were reviewed on February 21, 2018. The nearest listed landmark is Historical Landmark number 901, the West Miner Street-Third Street Historic District in Yreka. Gold was discovered in nearby flats in 1851 resulting in Yreka becoming a commercial and transportation hub for the surrounding mining camps. The Historic District consists of three blocks on West Miner Street and four blocks of Third Street, approximately one mile southwest of the Project site.

The Handbook of North American Indians lists the nearest Native American village as Kusta, located in Yreka.

Map Review and Aerial Photographs

The review of historical aerial photographs and maps of the Project Area provide information on the past land uses of the property. Based on this information, the property was initially undeveloped at the northern end of Yreka until the 1980s.

Conclusions

The site investigation performed by ECORP shows that one historic-age resource was previously recorded within the 0.50-mile records search radius, and that this resource is not located on the Project site. The site investigation determined that there is a low probability that undiscovered historic resources are located on the property. However, based on the results of the records search and literature review, the property has not been surveyed for cultural resources. Therefore, ground disturbance associated with development of the site has the potential to impact previously unknown, subsurface historic resources should any be present. Mitigation measure MM CUL-1 is provided below to reduce potential impacts to a level that is considered less than significant.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact b) Cause a substantial adverse change in the significance of an archaeological resource pursuant to §15064.5?

The site investigation performed by ECORP shows that there is a relatively low potential for the presence of prehistoric cultural resources on the Project site. There is no available information to indicate that archaeological sites are present on the property; however, the site has not been surveyed by archaeologists who meet the Secretary of the Interior’s Professional Qualification

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Standards for prehistoric and historic archaeology. Therefore, mitigation measure MM CUL-1 is provided below to address the potential for the discovery of any unrecorded or previously unknown archaeological resources. With implementation of this mitigation, impacts would be less than significant.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact c) Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature?

No known paleontological resources exist within the Project area. Regardless, unanticipated and accidental paleontological discoveries are possible during Project implementation, especially excavation, and have the potential to impact unique paleontological resources. Mitigation measure CUL-2 would address these potential impacts to a less than significant level.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact d) Disturb any human remains, including those

interred outside of dedicated cemeteries?

Previous cultural resource investigations conducted for projects in the vicinity of the Project area indicate that there is little likelihood for Native American archaeological sites, or burial sites, to be present in the area. Regardless, there is a possibility of the unanticipated and accidental discovery of human remains during ground-disturbing Project-related activities. Therefore, mitigation measure CUL-3 is provided below to reduce potential impacts to a level that is considered less than significant.

4.5.4 Mitigation Measures

CUL-1: If, during the course of project construction and/or operations, cultural resources (i.e., prehistoric sites, historic features, isolated artifacts, and features such as concentrations of shell or glass) are discovered, work shall be halted immediately within 50 feet of the discovery, the City of Yreka Public Works Department shall be immediately notified, and a professional archaeologist who meets the Secretary of the Interior’s Professional Qualifications Standards in prehistoric or historical archaeology shall be retained to determine the significance of the discovery. The City shall consider mitigation recommendations presented by a professional archaeologist and implement a measure or measures that the City deems feasible and appropriate. Such measures may include

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avoidance, preservation in place, excavation, documentation, curation, data recovery, or other appropriate measures.

Timing/Implementation: During ground-disturbing construction activities Monitoring/Enforcement: City of Yreka Building Department

CUL-2: If subsurface deposits believed to be of paleontological significance are discovered during construction, all work must halt within a 50-foot radius of the discovery. An on-site paleontological monitor, meeting the Secretary of the Interior’s Professional Qualification Standards for paleontology, shall be retained by the project applicant and shall be afforded a reasonable amount of time to evaluate the significance of the find. Work cannot continue at the discovery site until the paleontologist conducts sufficient research and data collection to make a determination that the resource is either (1) not a paleontological resource or (2) not potentially significant. If a potentially eligible resource is encountered, the paleontologist, lead agency, and project applicant shall arrange for either (1) total avoidance of the resource, if possible, or (2) test excavations to evaluate eligibility and, if eligible, total data recovery as mitigation. The determination shall be formally documented in writing and submitted to the City, as verification that the provisions in CEQA for managing unanticipated discoveries have been met.

Timing/Implementation: During ground-disturbing construction activities Monitoring/Enforcement: City of Yreka Building Department

CUL-3: If, during the course of project implementation, human remains are discovered, all work shall be halted immediately within 50 feet of the discovery, the City of Yreka Public Works Department shall be immediately notified, and the County Coroner must be notified, according to Section 5097.98 of the California Public Resources Code and Section 7050.5 of the California Health and Safety Code. If the remains are determined to be Native American, the coroner will notify the Native American Heritage Commission, and the procedures outlined in California Code of Regulations Section 15064.5(d) and (e) shall be followed.

Timing/Implementation: During ground-disturbing construction activities Monitoring/Enforcement: City of Yreka Building Department

4.6 Geology and Soils

The following information was provided by the Geotechnical Engineering Investigation prepared by Salem Engineering Group, Inc. (2016). The report is included as Appendix D of this Initial Study.

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4.6.1 Environmental Setting

The Yreka area is located within Shasta Valley in Siskiyou County in central-northern California. Shasta Valley, extending northward from the north face of Mount Shasta, is a 340 square-mile basin that is a relatively flat-lying semi-arid plain punctuated by hundreds of hills, ridges, and small closed depressions (not connected by surface streams). The Shasta River drains northward through the valley to join the Klamath River near the Oregon border.

Shasta Valley lies between two geomorphic provinces, the Klamath Mountains on the west, and the Cascade Range on the east. Geomorphic provinces are naturally defined geologic regions that display a distinct landscape or landform. Eleven provinces are distinguished in California with each region displaying unique, defining features based on geology, faults, topographic relief and climate. The Klamath Mountains on the west are characterized by complexly folded and faulted metamorphic, sedimentary, volcanic, and ultramafic rocks of Paleozoic age and by marine sandstone and conglomerate of Cretaceous age. East of Shasta Valley the Cascade Range is dominated by Cenozoic age volcanic rock. The Cascade Range is a mountainous region famous for its chain of tall volcanoes that run north-south along the west coast of North America from British Columbia through Washington and Oregon to Shasta Mountain and Lassen Peak in northern California. The Cascades are part of the Pacific Ring of Fire, the ring of volcanoes around the Pacific Ocean. All of the known historic eruptions in the contiguous United States have been from volcanoes in the Cascade Range.

4.6.2 Geology and Soils (VI) Environmental Checklist and Discussion

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact a) Expose people or structures to potential substantial adverse effects, including the risk of loss, injury, or death involving: i) Rupture of a known earthquake fault, as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault? Refer to Division of Mines and Geology Special Publication 42.

ii) Strong seismic ground shaking? iii) Seismic-related ground failure, including liquefaction?

iv) Landslides?

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Draft Initial Study and Mitigated Negative Declaration Dollar General Retail Store i) The proposed project site is not located within an Alquist-Priolo Earthquake Fault Zone. There are no known active or potentially active faults in or adjacent to Yreka. The closest mapped fault to the Project area is approximately 35 miles to the east. There would be no impact related to fault rupture. ii) The proposed Project area, as with virtually all sites in California, is subject to minor ground shaking as a result of earthquakes. However, the site is not within a currently established State of California Earthquake Fault Zone for surface fault rupture hazards. No active faults with the potential for surface fault rupture are known to pass in the vicinity of the Project site. Although it is impossible to predict the intensity of future seismic activity, the proposed Project site is located in one of the least active seismic regions in California.

Earthquakes are unavoidable hazards, although the resultant damage from ground shaking can be minimized through appropriate design and engineering. The City requires that all construction meet the latest standards of the California Building Code (CBC) for construction; these standards consider proximity to potential seismic sources. Project construction would be in accordance with applicable requirements of the most recent version of the CBC, which requires structural design that can accommodate ground accelerations expected from known active faults. Thus, while fault rupture impacts would be potentially damaging, they would also tend to be reduced in their structural effects due to CBC criteria that recognize this potential. The CBC includes provisions for buildings to structurally survive an earthquake without collapsing and includes measures such as anchoring to the foundation and structural frame design. Compliance with these building safety design standards would reduce potential impacts associated with fault rupture and ground shaking to less than significant levels. iii) Liquefaction occurs when loose sand and silt that is saturated with water behaves like a liquid when shaken by an earthquake. Liquefaction can result in the following types of seismic-related ground failure:

 Loss of bearing strength – soils liquefy and lose the ability to support structures

 Lateral spreading – soils slide down gentle slopes or toward stream banks

 Flow failures – soils move down steep slopes with large displacement

 Ground oscillation – surface soils, riding on a buried liquefied layer, are thrown back and forth by shaking

 Flotation – floating of light buried structures to the surface

 Settlement – settling of ground surface as soils reconsolidate

 Subsidence – compaction of soil and sediment

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Three factors are required for liquefaction to occur: (1) loose, granular sediment; (2) saturation of the sediment by groundwater; and (3) strong shaking. Impacts associated with liquefaction are unlikely given the low incidence of strong earthquakes in the region (the Project site is not located within a State of California Alquist-Priolo Earthquake Fault Zone) and the fact that liquefaction has not occurred on-site. Furthermore, the soils encountered within the near surface depths explored on the Project site predominately consist of loose to medium dense clayey sand with gravel, according to the Geotechnical Engineering Investigation prepared for the Project site (see Appendix D). The clay content of the soil yields it less susceptible to liquefaction. Additionally, free groundwater was encountered in the borings at a depth of 18 feet below ground surface (bgs), and is thus the on-site soils are not saturated.

Based on the depth to groundwater, the content of the soil profile, the apparent density of the soil, and the seismicity of the region, the site has a low potential for liquefaction. Further, all Project-related development would be required to comply with requirements of the California Building Code, which includes seismic safety standards that address liquefaction for proposed development in California. Therefore, the impact is less than significant. iv) The Project site has flat topography, indicating no potential for landslides. No impact would occur.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact b) Result in substantial soil erosion or the loss of

topsoil?

Construction activities, such as grading, excavation, and soil hauling, would disturb soils and potentially expose them to wind and water erosion. However, with the application of standard construction practices and regulatory requirements, soil erosion and loss of topsoil is not a concern. Erosion from stormwater runoff is controlled through adherence to the City’s Stormwater Quality Management & Discharge Control Ordinance (Municipal Code Chapter 12.40), which requires any person performing construction in the City to prevent pollutants, including sediments, from leaving the construction site. Municipal Code Chapter 12.40 requires the preparation of a stormwater pollution prevention plan (SWPPP) in order to comply with the RWQCB’s General Construction Storm Water Permit. The SWPPP will identify best management practices (BMPs) to be implemented on the Project site to minimize soil erosion and protect local waterways and existing drainage systems. Compliance with the State’s General Construction Storm Water Permit would minimize soil erosion and loss of topsoil from Project implementation and would reduce this impact to a level of less than significant.

The Project will be subject to Municipal Code Chapter 12.40 during operations as well. The City of Yreka is a Phase II, Small MS4 (municipal separate storm sewer systems) permittee under the "Waste

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Discharge Requirements for Municipal Separate Storm Sewer System (MS4) Discharges". The purpose and intent of this ordinance is to protect and enhance the water quality of watercourses, water bodies, and wetlands so that, to the maximum extent practicable, stormwater will not cause or contribute to any exceedances of water quality standards contained in the statewide Water Quality Control Plan, the California Toxics Rule, or in the North Coast RWQCB Basin Plan. These standards apply to sediments. Therefore, impacts would be less than significant.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact c) Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on- or off-site landslide, lateral spreading, subsidence, liquefaction or collapse?

The potential for landslides on the Project site was addressed under Response 4.5.2(a)(iv) and was determined to have no impact. The potential for lateral spreading, liquefaction, subsidence, and other types of ground failure or collapse was addressed under Response 4.5.2(a)(iii) and was determined to be less than significant.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact d) Be located on expansive soil, as defined in Table 18-1-B of the Uniform Building Code (1994), creating substantial risks to life or property?

Expansive or shrink-swell soils are soils that swell when subjected to moisture and shrink when dry. Expansive soils typically contain clay minerals that attract and absorb water, greatly increasing the volume of the soil. This increase in volume can cause damage to foundations, structures, and roadways. As previously described, the soils encountered within the near surface depths explored on the Project site predominately consist of loose to medium dense clayey sand with gravel. Despite the shrink-swell potential inherent in clayey soils, standard procedures used in the construction of concrete footings as required by the California Building Code will reduce this potential impact. Furthermore, Section 15.04.100 of the Yreka Municipal Code requires all development projects to prepare a preliminary soils report, prepared by a civil engineer registered in this state and based upon adequate test borings, to be submitted to the City engineer or director of public works for every subdivision. Based on the determination of this soils report, the City requires proper remediation to rectify potential soil-related issue or situation. As such, the potential for the proposed project to be affected by expansive soils is less than significant.

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Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact e) Have soils incapable of adequately supporting the use of septic tanks or alternative waste water

disposal systems where sewers are not available for the disposal of waste water?

The Project would connect to the City’s waste water collection and treatment plant. The proposed Project would not use a septic system or other waste water disposal system.

4.6.3 Mitigation Measures

No significant impacts were identified, and no mitigation measures are required.

4.7 Greenhouse Gas Emissions

4.7.1 Environmental Setting

Greenhouse gases (GHGs) are released as byproducts of fossil fuel combustion, waste disposal, energy use, land use changes, and other human activities. This release of gases, such as carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and chlorofluorocarbons, creates a blanket around the earth that allows light to pass through but traps heat at the surface, preventing its escape into space. While this is a naturally occurring process known as the greenhouse effect, human activities have accelerated the generation of GHGs beyond natural levels. The overabundance of GHGs in the atmosphere has led to an unexpected warming of the earth and has the potential to severely impact the earth’s climate system.

Each GHG differs in its ability to absorb heat in the atmosphere based on the lifetime, or persistence, of the gas molecule in the atmosphere. CH4 traps over 25 times more heat per molecule than CO2, and N2O absorbs 298 times more heat per molecule than CO2. Often, estimates of GHG emissions are presented in carbon dioxide equivalents (CO2e). Expressing GHG emissions in carbon dioxide equivalents takes the contribution of all GHG emissions to the greenhouse effect and converts them to a single unit equivalent to the effect that would occur if only CO2 were being emitted.

4.7.2 Greenhouse Gas Emissions (VII) Environmental Checklist and Discussion

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact a) Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment?

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GHG emissions contribute, on a cumulative basis, to the significant adverse environmental impacts of global climate change. No single project could generate enough GHG emissions to noticeably change the global average temperature. The combination of GHG emissions from past, present, and future projects contributes substantially to the phenomenon of global climate change and its associated environmental impacts and as such is addressed only as a cumulative impact.

Thresholds of significance illustrate the extent of an impact and are a basis from which to apply mitigation measures. Significance thresholds for GHG emissions resulting from land use development projects have not been established in Siskiyou County. In the absence of any GHG emission significance thresholds, the projected emissions are compared to the South Coast Air Quality Management District’s (SCAQMD) recommended threshold of 3,000 metric tons of CO2e annually (2008). While significance thresholds used in Southern California are not binding in Siskiyou County or Yreka, they are instructive for comparison purposes. The Project would be considered to have a significant impact if the projected emissions would surpass 3,000 metric tons of CO2e annually.

The projected GHG emissions were estimated by ECORP Consulting, Inc. using the California Emissions Estimator Model (CalEEMod) version 2016.3.2. Projected GHGs from construction have been quantified and amortized over the life of the Proposed Project (amortized over 30 years pursuant to SCAQMD guidance). The amortized construction emissions are added to the annual average operational emissions. Table 4.7-1 summarizes the direct and indirect annual GHG emissions level associated with the Proposed Project.

TABLE 4.7-1. Project-Related GHG Emissions

Emissions Source CO2e (Metric Tons/ Year) Construction (amortized over 30 years) 5 Area Source 0 Energy 101 Mobile 666 Waste 20 Water & Wastewater 5 Total 797 Bright-line threshold 3,000 Exceeds Threshold? No Source: Emissions were calculated by ECORP Consulting using CalEEMod 2016.3.2. Refer to Appendix E for Model Data Outputs.

As shown in Table 4.7-1, estimated GHG emissions resulting from both construction and operations of the proposed Project would total 797 metric tons of CO2e per year, which is less than the GHG threshold of 3,000 metric tons of CO2e per year. Therefore, a less than significant impact would occur.

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Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact b) Conflict with an applicable plan, policy or regulation adopted for the purpose of reducing the emissions of greenhouse gases?

The proposed Project would not conflict with any adopted plans, policies, or regulations adopted for the purpose of reducing GHG emissions. As identified under Response 4.7(a), Project-generated GHG emissions would not surpass GHG significance thresholds, which were prepared with the purpose of complying with California GHG reduction goals. Therefore, the proposed Project would not conflict with California GHG reduction goals. No impact would occur.

4.7.3 Mitigation Measures

No significant impacts were identified, and no mitigation measures are required.

4.8 Hazards and Hazardous Materials

4.8.1 Environmental Setting

A material is considered hazardous if it appears on a list of hazardous materials prepared by a federal, state, or local agency or if it has characteristics defined as hazardous by such an agency. A hazardous material is defined by the California Health and Safety Code, Section 25501 as follows:

“Hazardous material” means any material that, because of its quantity, concentration, or physical or chemical characteristics, poses a significant present or potential hazard to human health and safety or to the environment if released into the workplace or the environment. "Hazardous materials" include, but are not limited to, hazardous substances, hazardous waste, and any material that a handler or the administering agency has a reasonable basis for believing that it would be injurious to the health and safety of persons or harmful to the environment if released into the workplace or the environment.

A material is considered hazardous if it appears on a list of hazardous materials prepared by a federal, state, or local agency, or if it has characteristics defined as hazardous by such an agency. A hazardous material is defined in Title 22 of the California Code of Regulations, Title 22, Section 662601.10, as follows:

A substance or combination of substances which, because of its quantity, concentration, or physical, chemical or infectious characteristics, may either (1) cause, or significantly contribute to, an increase in mortality or an increase in serious irreversible, or incapacitating reversible, illness; or (2) pose a substantial present or potential hazard to

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human health or environment when improperly treated, stored, transported or disposed of or otherwise managed.

The release of hazardous materials into the environment could potentially contaminate soils, surface water, and groundwater supplies.

Most hazardous material regulation and enforcement in Siskiyou County is managed by the Siskiyou County Public Health Department, which refers large cases of hazardous materials contamination or violations to the North Coast RWQCB and the DTSC. When issues of hazardous materials arise, it is not at all uncommon for other agencies to become involved, such as the applicable air pollution control district and both the federal and state Occupational Safety and Health Administrations (OSHA).

Under Government Code Section 65962.5, both the DTSC and the State Water Resources Control Board (SWRCB) are required to maintain lists of sites known to have hazardous substances present in the environment. Both agencies maintain up-to-date lists on their websites. A search of the DTSC and SWRCB lists did not identify any open cases of hazardous waste violations in the vicinity of proposed Project site. Additionally, there has never been a case on the Project site (DTSC 2018; SWRCB 2015).

4.8.2 Hazards and Hazardous Materials (VIII) Environmental Checklist and Discussion

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact a) Create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials?

Businesses that sell and store hazardous materials are subject to the Hazardous Material Business Plan program, which is regulated by the Siskiyou County Environmental Health Division of the Public Health Department as part of the Certified Unified Program. The program requires the preparation of a document that provides an inventory of hazardous materials on-site, emergency plans and procedures in the event of an accidental release, and training for employees on safety procedures for handling hazardous materials and what to do in the event of a release or threatened release. These plans are routine documents that are intended to disclose the presence of hazardous materials and provide information on what to do if materials are inadvertently released.

The proposed Project would not create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials. Dollar General retail stores do not generate significant amounts of hazardous materials, and only a minimal amount of routine day-to- day materials is stored on-site, such as materials used in routine cleaning of the building or maintenance of landscaping. These materials would be used, stored, and disposed in accordance

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Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact b) Create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment?

Regarding construction, although unlikely, a potential release of hazardous materials could occur during construction work on the Project. Any such releases would most likely be spillages of motor vehicle fuels and oils. However, with the application of standard construction practices and regulatory requirements, the effects of such spills would be minimized.

As previously mentioned, during Project operations, the proposed Project would not create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials. Stores of this nature do not generate significant amounts of hazardous materials, and only a minimal amount of routine day-to-day materials is stored on-site, such as materials used in routine cleaning of the building or maintenance of landscaping. These materials would be used, stored, and disposed in accordance with existing regulations and product labeling and would not create a significant hazard to the public or to the environment. A less than significant impact would occur.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact c) Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste

within one-quarter mile of an existing or proposed school?

The Project is located approximately 0.15 miles from Yreka Union High School. There is a potential that common household hazardous materials may be stored in the proposed building, including cleaning solutions, bleach, and lawn care materials. These materials would be stored, used, and disposed of in accordance with product label instructions and existing state and local regulations. Due to the commonplace nature of the substances to be used, the small amount to be stored, and compliance with existing standards and regulations, this impact is considered less than significant.

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Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact d) Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and, as a result, would it create a significant hazard to the public or the environment?

Under Government Code Section 65962.5, both the DTSC and the SWRCB are required to maintain lists of sites known to have hazardous substances present in the environment. Both agencies maintain up-to-date lists on their websites. A search of the DTSC and SWRCB lists identified no cases of hazardous waste violations on the Project site (DTSC 2018; SWRCB 2015). Therefore, the proposed Project is not on a parcel included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5. As a result, construction of the Project would not create a significant hazard to the public or to the environment and would have no impact.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact e) For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use

airport, would the project result in a safety hazard for people residing or working in the project area?

Montague-Yreka Airport, the nearest airport to the Project site, public-use airport located 4.5 miles east of the Project site. Therefore, the Project site is more than 2 miles from a public or private airport. No impact would occur.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact f) Within the vicinity of a private airstrip, would the project result in a safety hazard for people residing or working in the project area?

The Proposed Project site is not located within the vicinity of a private airstrip and would not result in a safety hazard for people residing or working in the Project area. Therefore, no impact would occur.

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Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact g) Impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan?

Yreka is located in the Operational Area of the Siskiyou County Office of Emergency Services. A standardized emergency management system (SEMS) program is in place between the City and the Office of Emergency Services. A local emergency plan guides local response to emergencies and local emergency management and is conducted under the direction of the City of Yreka Police Department. The Proposed Project would not obstruct evacuation routes or access to critical emergency facilities. No impact would occur.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact h) Expose people or structures to a significant risk of loss, injury or death involving wildland fires, including where wildlands are adjacent to urbanized areas or where residences are intermixed with wildlands?

Although there is the potential for wildland fires in the region given the relatively dry summer climate, with hot days and wind, the Project site is located in an urban industrial environment in an area that is not likely to be affected by wildland fires. Impacts would be less than significant.

4.8.3 Mitigation Measures

No significant impacts were identified, and no mitigation measures are required.

4.9 Hydrology and Water Quality

4.9.1 Environmental Setting

One of the most significant hydrology-related issues in Yreka is occasional flooding from storm events. Yreka is traversed by a number of natural and man-made drainages that experience dramatic seasonal fluctuations in flow and occasional short-term “pulse flow” conditions resulting in flooding. Occasional flooding due to naturally occurring storm events occurs along these drainages and at a few intersections throughout the City. Several creeks and/or intermittent drainages flow through Yreka: Yreka Creek, Humbug Creek, Juniper Creek, and Greenhorn Creek. Yreka Creek, an ephemeral waterway, does not maintain a year-round surface flow in many of its reaches, including the one traversing the north portion of the Project site.

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As mapped by the FEMA (2018) National Flood Hazard Layer, the Project site is in Flood Zone X, indicating that the site is an area of minimal flood hazard. Flood Zone X includes areas outside the Special Flood Hazard Area (SFHA) and higher than the elevation of the 0.2-percent-annual-chance flood (FIRM Map 06093C1557D).

4.9.2 Hydrology and Water Quality (IX) Environmental Checklist and Discussion

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact a) Violate any water quality standards or waste

discharge requirements?

There is potential for the proposed Project to result in degradation of water quality during both the construction and operational phases. Polluted runoff from the Project site during construction and operation could include sediment from soil disturbances, oil and grease from construction equipment, and pesticides and fertilizers from landscaped areas. The greatest potential source of water contaminants from the proposed development would be from erosion related to construction and from surface pollutants associated with the impervious surfaces on-site following completion of construction. This degradation could result in violation of water quality standards.

Stormwater runoff and associated pollutants are controlled through adherence to the City’s Stormwater Quality Management & Discharge Control Ordinance (Municipal Code Chapter 12.40), which requires projects in Yreka to prevent pollutants from leaving the project site. As previously described, Municipal Code Chapter 12.40 requires the preparation of a SWPPP in order to comply with the RWQCB’s General Construction Storm Water Permit. The SWPPP must be prepared pursuant to RWQCB standards and is subject to RWQCB review for each phase of the Project. The SWPPP will include measures designed to reduce or eliminate erosion and runoff into waterways. Best management practices include wattles, covering of stockpiles, silt fences, and other physical means of slowing stormwater flow from the graded areas to allow sediment and pollutants to settle before entering stormwater channels. The method used would be described in the SWPPP and may vary depending on the circumstances of construction.

The City of Yreka is a Phase II, Small MS4 (municipal separate storm sewer systems) permittee under the "Waste Discharge Requirements for Municipal Separate Storm Sewer System (MS4) Discharges". Municipal Code Chapter 12.40 seeks to protect and enhance the water quality of watercourses, water bodies, and wetlands so that, to the maximum extent practicable, stormwater will not cause or contribute to any exceedances of water quality standards contained in the statewide Water Quality Control Plan, the California Toxics Rule, or in the North Coast RWQCB Basin Plan. The proposed Project includes four stormwater retention basins. All stormwater flowing from the Project’s parking lot and new building would flow into one of these basins. The basins would be designed to retain all

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Because of these standard procedures and the requirement to prepare a SWPPP, Project impacts to water quality are considered to be less than significant.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact b) Substantially deplete groundwater supplies or interfere substantially with groundwater recharge such that there would be a net deficit in aquifer volume or a lowering of the local groundwater

table level (e.g., the production rate of pre- existing nearby wells would drop to a level which would not support existing land uses or planned uses for which permits have been granted)?

The proposed Project would receive water from the City's municipal water supply, which is sourced from surface water, and would not involve drilling a new well to serve the site. The Project would result in an increase in impervious surfaces, specifically 9,100 square feet of a new building and 17,583 square feet of paved surface area. Currently, this area allows water to percolate into the groundwater basin. The actual absorption rate on the proposed site is unknown and whether or not this water actually penetrates the groundwater basin or flows off-site is also unknown. Despite this increase in impervious surfaces, the addition of these surfaces would not interfere with groundwater recharge. The actual impervious surfaces (building and parking lot) amount to less than an acre. All stormwater flow from these areas would flow into one of the four stormwater retention basins and these basins would allow water to percolate into the groundwater basin and not flow off-site. Further, there are sufficient pervious surfaces adjacent to the Project site. Therefore, the addition of these surfaces would not significantly interfere with groundwater recharge, as there are sufficient pervious surfaces adjacent to these improvements. No impact.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact c) Substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river, in a manner that would result in substantial erosion or siltation on- or off-site?

See Response 4.6.2(b) above. Implementation of the proposed Project would alter the existing drainage patterns on the site by adding impermeable surfaces to currently undeveloped land. However, the Project would be required to comply with City Municipal Code Chapter 12.40, which

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Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact d) Substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river, or

substantially increase the rate or amount of surface runoff in a manner that would result in flooding on- or off-site?

See Responses 4.6.2(b) and 4.9.2(c). The proposed Project would alter the existing drainage patterns on the site by adding impermeable surfaces to portions of the site. Impervious surfaces will allow stormwater to move more quickly through the site, increasing the rate of runoff, and thus have more erosive potential. However, as previously described, the proposed Project includes four stormwater retention basins. All stormwater flowing from the Project’s parking lot and new building would flow into one of these basins. The basins would be designed to retain all stormwater from the Project and therefore prevent the possibility of Project stormwater flows into any waterways. For these reasons, the proposed Project would have a less than significant impact regarding flooding on- or off-site.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact e) Create or contribute runoff water, which would exceed the capacity of existing or planned

stormwater drainage systems or provide substantial additional sources of polluted runoff?

As previously described, the proposed Project includes four stormwater retention basins. All stormwater flowing from the Project’s parking lot and new building would flow into one of these basins. The basins would be designed to retain all stormwater from the Project and therefore prevent the possibility of Project stormwater flows into any waterways. For these reasons, the proposed Project would not exceed the capacity of City stormwater drainage systems. This impact is less than significant.

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Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact f) Otherwise substantially degrade water quality?

See Responses 4.9.2(a) and 4.9.2(c). The proposed Project would not result in degradation of water quality. Impacts are less than significant.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact g) Place housing within a 100-year flood hazard area as mapped on a federal Flood Hazard

Boundary or Flood Insurance Rate Map or other flood hazard delineation map?

No housing is proposed for the Project. There would be no impact in this area.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact h) Place within a 100-year flood hazard area structures that would impede or redirect flood flows?

As mapped by the FEMA (2018) National Flood Hazard Layer, the Project site is in Flood Zone X, indicating that the site is an area of minimal flood hazard. Flood Zone X includes areas outside the Special Flood Hazard Area (SFHA) and higher than the elevation of the 0.2-percent-annual-chance flood (FIRM Map 06093C1557D). Therefore, implementation of the proposed Project will not have an impact related to flooding.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact i) Expose people or structures to a significant risk of loss, injury or death involving flooding,

including flooding as a result of the failure of a levee or dam?

The Project site is located 2.15 miles north of the Greenhorn Dam. According to the City General Plan (2003), Greenhorn Dam Reservoir poses no real threat to Yreka. Even though it is a Class C earthfill dam, a breakage by any means would result in seepage rather than a complete collapse. There is a limited quantity of water impounded and Yreka Creek could accommodate the flow. Furthermore,

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Draft Initial Study and Mitigated Negative Declaration Dollar General Retail Store the dams on the Klamath River do not pose a threat to Yreka as they are over 20 miles away with intervening topography (Yreka 2003). Additionally, these dams are regulated by the California Division of Safety of Dams (DSD). The DSD performs annual maintenance inspections of these and other dams under state jurisdiction, including monitoring for compliance with seismic stability standards. Regular inspection by the DSD ensures that dams are kept in safe operating condition. As such, failure of these dams is considered to have an extremely low probability of occurring and is not considered to be a reasonably foreseeable event. For these reasons, the Project would not expose people or structures to a significant risk of loss, injury, or death as a result of the failure of a dam. No impact would occur.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact j) Be subject to inundation by seiche, tsunami, or

mudflow?

The Project site is not located near an ocean or large body of water with potential for seiche or tsunami. The Project area is not at risk for mudflows. Therefore, no impact would occur.

4.9.3 Mitigation Measures

No significant impacts were identified, and no mitigation measures are required.

4.10 Land Use and Planning

4.10.1 Environmental Setting

The basis for land use planning in Yreka is the City’s General Plan (2003). The Land Use Element provides the primary guidance on issues related to land use and land use intensity. The Land Use Element provides designations for land in Yreka and outlines goals and policies concerning development and use of that land. In concert with the General Plan, the Yreka Zoning Ordinance establishes zoning districts in the City and specifies allowable uses and development standards for each district. Under state law, each jurisdiction’s zoning ordinance must be consistent with its general plan.

The City of Yreka General Plan identifies the site with the General Commercial (GC) land use designation, and the site is zoned Commercial Tourist (CT) (Yreka 2003). Both the General Commercial and Commercial Tourist land use and zoning designations allow for and anticipate the use of the site for commercial purposes consistent with the proposed use of the site as a Dollar General retail store.

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4.10.2 Land Use and Planning (X) Environmental Checklist and Discussion

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact a) Physically divide an established community?

The Project site is located in an area of Yreka with existing commercial development. While there are undeveloped lands in the Project vicinity, these lands are designated and zoned for commercial development. Therefore, implementation of the proposed Project will not divide an established community. No impact would occur.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact b) Conflict with any applicable land use plan, policy, or regulation of an agency with jurisdiction over the project (including, but not limited to the

general plan, specific plan, local coastal program, or zoning ordinance) adopted for the purpose of avoiding or mitigating an environmental effect?

The Project will not conflict with applicable plans that have jurisdiction over the Project area. The Project is consistent with the City’s General Plan and Zoning Ordinance. No impact would occur.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact c) Conflict with any applicable habitat conservation

plan or natural community conservation plan?

See subsection 4.4, Biological Resources. There are currently no adopted or proposed habitat conservation plans, natural community conservation plans, or other approved local, regional, or state habitat conservation plans that affect the proposed project. Therefore, no conflict with occur.

4.10.3 Mitigation Measures

No significant impacts were identified, and no mitigation measures are required.

4.11 Mineral Resources

4.11.1 Environmental Setting

Historically, gold mining was responsible for the establishment of Yreka. With thousands of gold miners hoping to strike it rich, dredge mining occurred along Yreka Creek between the 1850s and

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1930s. Although some mining still takes place on the Shasta and Klamath rivers, the resource is essentially depleted and no longer plays a significant role in Yreka’s economy. Nevertheless, gold continues to provide a tourist draw to the region for many amateur gold-seekers.

The State Mining and Geology Board has the responsibility to inventory and classify mineral resources and could designate such mineral resources as having a statewide or regional significance. If this designation occurs, the local agency must adopt a management plan for such identified resources. At this time, there are no plans to assess local mineral resources for the Project area or Siskiyou County.

4.11.2 Mineral Resources (XI) Environmental Checklist and Discussion

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact a) Result in the loss of availability of a known mineral resource that would be of value to the region and the residents of the state?

The Project would not result in the loss of an available known mineral resource that would be of value to the region or residents of the state. No impact would occur.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact b) Result in the loss of availability of a locally- important mineral resource recovery site

delineated on a local general plan, specific plan or other land use plan?

See Response 4.11.2(a). There are no locally important mineral resource recovery sites within the Project area delineated in the City or County General Plans. No impact would occur.

4.11.3 Mitigation Measures

No significant impacts were identified, and no mitigation measures are required.

4.12 Noise

4.12.1 Environmental Setting

Noise sources in Yreka include local and through traffic, commercial and industrial uses, races at the fairgrounds, and occasional railroad operations of the Yreka Western Railroad when it is operating. The most consistent noise sources in Yreka are local and through traffic. Interstate 5, which traverses the full length of the community from north to south, is likely the most significant noise source.

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Noise Fundamentals

Noise is generally defined as sound that is loud, disagreeable, or unexpected. The selection of a proper noise descriptor for a specific source is dependent on the spatial and temporal distribution, duration, and fluctuation of the noise. The noise descriptors most often encountered when dealing with traffic, community, and environmental noise include an overall frequency-weighted sound level in decibels that approximates the frequency response of the human ear (in dBA).

Noise can be generated by a number of sources, including mobile sources, such as automobiles, trucks, and airplanes, and stationary sources, such as construction sites, machinery, and industrial operations. The rate depends on the ground surface and the number or type of objects between the noise source and the receiver. Mobile transportation sources, such as highways, and hard and flat surfaces, such as concrete or asphalt, have an attenuation rate of 3.0 dBA per doubling of distance. Soft surfaces, such as uneven or vegetated terrain, have an attenuation rate of about 4.5 dBA per doubling of distance from the source. Noise generated by stationary sources typically attenuates at a rate of approximately 6.0 to 7.5 dBA per doubling of distance from the source (EPA 1971).

Sound levels can be reduced by placing barriers between the noise source and the receiver. In general, barriers contribute to decreasing noise levels only when the structure breaks the “line of sight” between the source and the receiver. Buildings, concrete walls, and berms can all act as effective noise barriers. Wooden fences or broad areas of dense foliage can also reduce noise, but are less effective than solid barriers.

4.12.2 Noise (XII) Environmental Checklist and Discussion

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact a) Result in exposure of persons to or generation of noise levels in excess of standards established in

the local general plan or noise ordinance, or applicable standards of other agencies?

It is difficult to specify noise levels that are generally acceptable to everyone; what is annoying to one person may be unnoticed by another. Standards may be based on documented complaints in response to documented noise levels, or based on studies of the ability of people to sleep, talk, or work under various noise conditions. However, all such studies recognize that individual responses vary considerably. Standards usually address the needs of the majority of the general population.

Construction Impacts

Construction noise associated with the proposed Project would be temporary and would vary depending on the nature of the activities being performed. Noise generated would primarily be associated with the operation of off-road equipment for on-site construction activities. Construction

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The noise levels for various types of construction equipment that could be required during construction of the proposed Project are provided in Table 4.12-1.

Table 4.12-1. Typical Noise Levels from Construction Equipment

Typical Noise Level (dBA) at 50 Feet from Source Equipment Maximum Instantaneous Noise Averaged over 8- Noise Hour Workday Air Compressor 80 76 Backhoe/Front End Loader 80 76 Compactor (Ground) 80 73 Concrete Mixer Truck 85 81 Concrete Mixer (Vibratory) 80 73 Concrete Pump Truck 82 75 Concrete Saw 90 83 Crane 85 77 Dozer/Grader/Excavator/Scraper 85 81 Drill Rig Truck 84 77 Generator 82 79 Gradall 85 81 Hydraulic Break Ram 90 80 Jackhammer 85 78 Impact Hammer/Hoe Ram (Mounted) 90 83 Pavement Scarifier/Roller 85 78 Paver 85 82 Pneumatic Tools 85 82 Pumps 77 74 Truck (Dump/Flat Bed) 84 80 Source: FTA 2006

During the construction phase of the Project, exterior noise levels resulting from construction could affect nearby sensitive receivers. As shown in Table 4.12-1, noise levels associated with individual construction equipment used for typical construction projects can reach levels of up to

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Yreka regulates construction noise through Section 11.01.075 of the Municipal Code. Section 11.01.075 of the City’s Municipal Code states that no construction equipment shall be operated nor any outdoor construction or repair work shall be permitted within five hundred feet from any occupied residence except during the hours of 7 a.m. to 7 p.m., Monday through Saturday, and 8 a.m. to 5 p.m., on Sunday. Furthermore, the City’s General Plan Noise Element (Yreka 2003) has the following policies regarding construction noise:

 Policy 9: Noise associated with construction activities shall be exempt from noise standards.

 Policy 11: All internal combustion engines used in conjunction with construction activities shall be muffled according to the equipment manufacturers’ requirements.

Due to the temporary nature of construction, the City does not establish a numerical noise level threshold. However, since the Project would adhere to the allowed construction hours listed in the City’s Municipal Code and the General Plan and since construction equipment would be muffled according to the equipment manufacturers’ requirements per Policy 11 of the General Plan, the Project would not exceed City’s noise standards. For these reasons, noise generated during construction activities is considered less than significant.

Long-Term Operational Impacts

The main source of operational noise in the Project vicinity is vehicular traffic. According to Caltrans’ 2016 Traffic Volumes (2017), the segment of State Route 3 that traverses the southern end the Project site accommodates an average of 3,150 vehicle trips daily. Predicted traffic noise levels of this roadway segment were calculated using the FHWA Highway Noise Prediction Model (FHWA-RD-77- 108) (See Appendix F). Based on this information, the predicted noise levels in the Project vicinity would be 53.7 dBA averaged over a 24-hour period.

Policy 1 of the City’s General Plan Noise Element provides noise level standards for noise-sensitive areas of new uses affected by traffic or railroad noise sources. Commercial buildings are limited to exterior noise levels of 65 dBA. The predicted existing traffic noise levels of 53.7 dBA, are below the

65 dBA Ldn standard. Therefore, the noise level is compatible with the Project and the impact is considered less than significant.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact b) Result in exposure of persons to or generation of excessive groundborne vibration or groundborne noise levels?

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Project construction would have the potential to result in varying degrees of temporary groundborne vibration, depending on the specific construction equipment used and the operations involved. Vibration generated by construction equipment spreads through the ground and diminishes in magnitude with increases in distance. Since the City does not establish vibration thresholds, this impact discussion utilizes Caltrans’s recommended standard of 0.2 inches per second (in/sec) peak particle velocity with respect to the prevention of structural damage for normal buildings (Caltrans 2013b). This is also the level at which vibrations may begin to annoy people in buildings. The nearest off-site structures to the Project construction site include two commercial buildings adjacent to the western boundary of the Project site and a motel building adjacent to the eastern boundary. It is acknowledged that construction activities would occur throughout the Project site and would not be concentrated at the point closest to the nearest residential structure. Table 4.12-2 displays vibration levels for typical construction equipment.

Table 4.12-2. Typical Construction Equipment Vibration Levels Equipment Peak Particle Velocity at 25 Feet (Inches/ Second) Large Bulldozer 0.089 Caisson Drilling 0.089 Loaded Trucks 0.076 Small bulldozer 0.003 Jackhammer 0.035 Source: FTA 2006; Caltrans 2013b.

Based on the vibration levels presented in Table 4.12-2, ground vibration generated by heavy-duty equipment would range from 0.003 to 0.089 in/sec peak particle velocity at 25 feet. Because vibration drops off rapidly with distance, vibration from construction activities experienced at the nearest structure would be expected to be below the 0.2 inch-per-second PPV significance threshold. Impacts would be less than significant.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact c) Result in a substantial permanent increase in ambient noise levels in the project vicinity above levels existing without the project?

The main source of operational noise impacts as a result of the Project is an increase in vehicular traffic. On peak days, the Project is expected to result in an additional 647 average daily trips (ITE 2012). According to the California Department of Transportation (Caltrans) 2016 Traffic Volumes (2017), the segment of State Route 3 that traverses the southern end the Project site accommodates an average of 3,150 vehicle trips daily. According to the Caltrans Technical Noise Supplement to the Traffic Noise Analysis Protocol (2013a), doubling of traffic on a roadway would result in an increase of 3 dB (a barely perceptible increase). The Project’s 647 daily trips would not double traffic on State Route 3, and thus, would not result in a perceptible increase traffic noise levels. As a result, less than significant impacts would occur.

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Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact d) Result in a substantial temporary or periodic increase in ambient noise levels in the project vicinity above levels existing without the project?

See discussion above in 4.12.2(a), Construction Impacts. Since the Project would adhere to the allowed construction hours listed in the City’s Municipal Code and the General Plan and since construction equipment would be muffled according to the equipment manufacturers’ requirements per Policy 11 of the General Plan, the Project would not exceed City’s noise standards. For these reasons, noise generated during construction activities is considered less than significant.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact e) For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use

airport, would the project expose people residing or working in the project area to excessive noise levels?

Montague-Yreka Airport, the nearest airport to the Project site, public-use airport located 4.5 miles east of the Project site. Therefore, the proposed Project is also not located within two miles of any existing public airports or within an existing airport land use plan area. No noise-related impact would occur in this regard.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact f) For a project within the vicinity of a private airstrip, would the project expose people residing

or working in the project area to excessive noise levels?

There are no private airstrips within the vicinity of the Project site. No noise-related impact would occur in this regard.

4.12.3 Mitigation Measures

No significant impacts were identified, and no mitigation measures are required.

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4.13 Population and Housing

4.13.1 Environmental Setting

According to the California Department of Finance (2017), the population of Yreka was approximately 7,777 as of January 2017, with 3,378 occupied dwelling units and an average of 2.26 persons per household. No housing exists on the Project site.

4.13.2 Population and Housing (XIII) Environmental Checklist and Discussion

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact a) Induce substantial population growth in an area, either directly (for example, by proposing new homes and businesses) or indirectly (for example, through extension of roads or other infrastructure)?

The proposed Project does not include the construction of any new homes; however, it does include the construction of a retail use that could create a limited number of new jobs in the region. While the addition of new employment opportunities could increase the City’s population, it is anticipated that the majority of new employees would likely be existing residents of the City or surrounding area. As such, the proposed Project is unlikely to result in a demand for new housing. The impact is less than significant.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact b) Displace substantial numbers of existing housing, necessitating the construction of replacement housing elsewhere?

As the Project area is undeveloped, the Project would not displace any housing. Therefore, the Project would not necessitate the construction of any replacement housing. No impact would occur.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact c) Displace substantial numbers of people, necessitating the construction of replacement housing elsewhere?

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The Project area is undeveloped, thus would not involve the displacement of any people. Therefore, the Project would not necessitate the construction of any replacement housing. No impact would occur.

4.13.3 Mitigation Measures

No significant impacts were identified, and no mitigation measures are required.

4.14 Public Services

4.14.1 Environmental Setting

Public services include fire protection, police protection, parks and recreation, and schools. Generally, impacts in these areas are related to an increase in population from a residential development. Levels of service are generally based on a service to population ratio, except for fire protection, which is usually based on a response time.

Police Services

Police protection services in the City are provided by the Yreka Police Department, which operates from the main police station located at 412 West Miner Street. The department anticipates that the current police force will be adequate to provide police protection needs to Yreka residents at the same level of service through 2022, barring a large increase in population due to a major change such as a large employer locating in Yreka (Yreka 2003).

Fire Services Fire protection services in Yreka are provided by the Yreka Fire Department, which is staffed by volunteers. The fire station is located at 401 West Miner Street. The department also provides Basic Life Support services. Although the personnel are volunteers, equipment needs are funded through the City of Yreka’s property assessment for fire services. The service boundaries of the department are the City limits, although the department has a mutual aid agreement with Cal Fire to provide fire protection services to outlying areas (Yreka 2003).

Schools

The Yreka Union Elementary School District serves school-aged children in kindergarten through eighth grade (K–8). Three public schools serve elementary school–aged children: Evergreen School, Jackson Street School, and Matole Valley Charter School. The Yreka Union High School District serves high school–aged children in grades 9 through 12 at Yreka High School (Yreka 2003).

Parks

The City of Yreka maintains eight parks and a plaza which are available for public enjoyment, recreation and sporting events. The City also operates and maintains the Yreka Creek Greenway, a

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Other Public Facilities

Other local public facilities found in Yreka include Siskiyou County Administration, Courts, Public Health, and Library; College of the Siskiyous; Yreka City Administration; California Highway Patrol; National Forest Service; California Department of Forestry; County Fairgrounds; and a variety of other state and federal offices.

4.14.2 Public Services (XIV) Environmental Checklist and Discussion

Less than Significant Potentially with Less than Would the Project: Significant Mitigation Significant No Impact Incorporated Impact Impact a) Result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities, need for new or physically altered governmental facilities, the

construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios, response times or other performance objectives for any of the public services:

Fire Protection?

Police Protection?

Schools?

Parks?

Other Public Facilities?

Fire Protection

Development of the Project site would result in a need for fire protection services to respond to any potential incidents that may occur at the site. However, the Project site is located in a developed part of the City that currently receives fire service. While a new commercial building could potentially require services, it would not result in the need for new fire personnel or facilities, as services can adequately be provided by existing personnel out of existing facilities. Therefore, this impact is less than significant.

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Police Services

Development of the Project site could potentially result in a need for police protection services to respond to any potential incidents that may occur at the site. However, the Project site is located in a developed part of the City that currently receives police service. While a new commercial land use would require services, it would not result in the need for new police personnel or facilities, as services can adequately be provided by existing personnel out of existing facilities. Therefore, this impact is less than significant.

Schools

The proposed Project does not propose any housing and would not include any other components that would result in an increased demand for schools. As such, there would be no need for additional facilities to maintain acceptable service ratios for schools. No impact would occur.

Parks

The proposed Project does not propose any housing or population that would require additional recreational facilities, and would not include any other components that would result in an increased demand for parks. As such, there would be no need for additional facilities to maintain acceptable service ratios for parks. No impact would occur.

Other Public Facilities

The proposed Project does not propose any housing or population that would require additional demand other public services, such as libraries. As such, there would be no need for additional facilities to maintain acceptable service ratios. No impact would occur.

4.14.3 Mitigation Measures

No significant impacts were identified, and no mitigation measures are required.

4.15 Recreation

4.15.1 Environmental Setting

Recreational opportunities for both youth and adults are varied in Yreka. A well-rounded variety of programs and activities is available to Yreka’s residents at City, school, and private recreational facilities. The City’s Department of Public Works operates and maintains eight parks, a plaza, one pool, the Yreka Creek Greenway, a senior center and community theater, all funded by the City’s General Fund (Yreka 2018). Private recreational facilities include a community theater, the YMCA, fitness centers, and a bowling alley.

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4.15.2 Recreation (XV) Materials Checklist

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact a) Increase the use of existing neighborhood and regional parks or other recreational facilities such

that substantial physical deterioration of the facility would occur or be accelerated?

The proposed Project will not result in the construction of any new residential units; therefore, the use of existing parks and other recreational facilities will not be increased and no new or expanded facilities will be required. As such, the proposed Project would have no impact to recreation.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact b) Include recreational facilities or require the construction or expansion of recreational

facilities, which might have an adverse physical effect on the environment?

See Response 4.15.2(a). No impact would occur.

4.15.3 Mitigation Measures

No significant impacts were identified, and no mitigation measures are required.

4.16 Transportation/Traffic

4.16.1 Environmental Setting

Yreka is located in northern Siskiyou County and is served by I-5, SR 3, and SR 263. In Yreka, a number of significant roadways, including Main Street, Oregon Street, Miner Street, and Oberlin Road, provide internal circulation and connectivity to the Siskiyou County roadway system.

The County of Siskiyou provides a public bus system, the Siskiyou Transit and General Express (STAGE), that makes several stops in Yreka, while providing transportation to the communities in Siskiyou County generally along I-5. Another STAGE route travels SR 3 from Etna into Yreka and returns along the same route. A senior bus service is also provided in Yreka by the Yreka Senior Center. This service works in conjunction with STAGE to provide a greater service area for STAGE.

The terrain and layout of Yreka is favorable for bicycle and pedestrian circulation. Sidewalks exist on most streets. Most streets have sufficient width and low traffic volumes, permitting their safe use by bicyclists. Streets in Yreka have designated areas between the vehicle travelway and the edge of

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The Project is located on the north side of Montague Road / SR 3 between North Main Street and Deer Creek Way. Montague Road / SR 3 is a Caltrans facility and access to the site is currently regulated with a right turn in-right turn out driveway off Montague Road / SR 3. The Project proposes to employ the same access point at the southeastern edge of the Project site. In-out turn movement striping would be implemented during Project construction.

4.16.2 Transportation/Traffic (XVI) Environmental Checklist and Discussion

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact a) Conflict with an applicable plan, ordinance, or policy establishing measures of effectiveness for the performance of the circulation system, taking into account all modes of transportation including mass transit and non-motorized travel and relevant components of the circulation system, including but not limited to intersections, streets, highways, and freeways, pedestrian and bicycle paths, and mass transit?

According to the California Department of Transportation (Caltrans) 2016 Traffic Volumes (2017), the segment of SR 3 that traverses the southern end the Project site accommodates an average of 3,150 vehicle trips daily. On peak days, the Project is expected to result in an additional 647 average daily trips (ITE 2012).

As described in the City’s General Plan Circulation Element Program CI.4.F, traffic impacts are considered significant if they result in traffic that exceeds the "Environmental Capacity" of average daily trips. Per the City’s General Plan, SR 3 is an arterial roadway and the environmental capacity is 5,000 average daily trips. The additional 647 Project-related trips will result in a total of 3,797 trips on State Route 3. Therefore, the environmental capacity will not be exceeded and a less than significant impact would occur.

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Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact b) Conflict with an applicable congestion management program, including, but not limited to level of service standards and travel demand

measures, or other standards established by the county congestion management agency for designated roads or highways?

See Response 4.16.2(a). According to General Plan Circulation Element Program CI.4.F, traffic impacts are considered significant if they result in traffic that exceeds the "Environmental Capacity" of average daily trips. The additional 647 Project-related trips will result in a total of 3,797 trips on State Route 3. Therefore, the environmental capacity of 5,000 trips will not be exceeded and a less than significant impact would occur.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact c) Result in a change in air traffic patterns, including either an increase in traffic levels or a change in location that results in substantial safety risks?

Montague-Yreka Airport, the nearest airport to the Project site, public-use airport located 4.5 miles east of the Project site. However, there are no Project components that would affect air traffic patterns. No impact.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact d) Substantially increase hazards due to a design feature (e.g., sharp curves or dangerous

intersections) or incompatible uses (e.g., farm equipment)?

No design features associated with the proposed Project would increase hazards. No impact would occur.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact e) Result in inadequate emergency access?

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The proposed Project site will have adequate access for emergency vehicles. Additionally, the Yreka Fire Department and Police Department have reviewed the proposed site plan and approved the site access configuration. There is no impact from the proposed Project.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact f) Conflict with adopted policies, plans, or programs regarding public transit, bicycle, or pedestrian

facilities or otherwise decrease the performance or safety of such facilities?

The proposed Project will not conflict with adopted plans for alternative transportation and will not have an impact on alternative transportation.

4.16.3 Mitigation Measures

No significant impacts were identified, and no mitigation measures are required.

4.17 Tribal Cultural Resources

4.17.1 Environmental Setting

The archaeological record of the native population is limited. It is known that at the time of European “discovery,” the area now home to Yreka was settled by the Shasta Indians and used for winter hunting. Typical of increased European settlement, the native population declined during the Gold Rush era.

4.17.2 Tribal Consultation

Native American consultation letters were sent to the recognized Tribes in Siskiyou County. The City received a response from the Karuk Tribe of California stating that they have no cultural concerns with the Project.

4.17.3 Tribal Cultural Resources (XVII) Environmental Checklist and Discussion

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact a) Cause a substantial adverse change in the significance of a tribal cultural resource, defined in Public Resources Code Section 21074 as either a site, feature, place, cultural landscape that is geographically defined in terms of the size and scope of the landscape, sacred place, or object

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Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact with cultural value to a California Native American tribe, and that is: i) Listed or eligible for listing in the California Register of Historical Resources, or in a local register of historical resources as defined in Public Resources Code Section 5020.1(k), or

ii) A resource determined by the lead agency, in its discretion and supported by substantial evidence, to be significant pursuant to criteria set forth in subdivision (c) of Public Resources Code Section 5024.1. In applying the criteria set forth in subdivision (c) of Public Resources Code Section 5024.1, the lead agency shall consider the significance of the resource to a California Native American Tribe.

No known cultural resources or significant archaeological resources have been identified within the Project area. The site has not been identified as either a site, feature, place, cultural landscape, sacred place, or object with cultural value to a California Native American tribe. However, unanticipated and accidental discovery of California Native American tribal cultural resources are possible during Project implementation, especially during excavation, and have the potential to impact unique cultural resources. As such, mitigation measure CUL-1 has been included to reduce the potential for impacts to tribal cultural resources to a less than significant level.

4.17.4 Mitigation Measures

Implement mitigation measure CUL-1.

4.18 Utilities and Service Systems

4.18.1 Environmental Setting

Water Supply

The City of Yreka gets its normal water supply from Fall Creek at a location 23 miles northeast of the City limits. Raw water is diverted from Fall Creek, pre-chlorinated, and pumped to the Klamath Pass Tank through the Fall Creek Pump Station. Water is then gravity-fed from the Klamath Pass Tank through the Filter Pump Station where a filter-aid is added prior to filtration and post-chlorination at the Water Treatment Plant. The treated water is piped the remaining few miles to the City’s water distribution system, which includes six booster pump stations, eight water storage facilities with a

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Wastewater

The wastewater treatment facility for Yreka is located between SR 263 (N. Main Street) and Yreka Creek, approximately 600 feet north of the intersection of Montague Road and SR 263. The wastewater treatment plant has a design capacity of 1.2 million gallons per day of average dry weather flow. Average dry weather flow (ADWF) is 0.8 million gallons per day. The Project proposes to connect to the City’s existing wastewater collection line located in Montague Road.

Storm Drainage

The City is traversed by a number of natural and man-made drainages that all eventually lead to Yreka Creek, which flows north to the Shasta River, a tributary to the Klamath River. Overall drainage in the City is adequate, with only localized flooding during storm events. Floodwater and drainage have had a negative effect on the wastewater collection and treatment systems. The City prepared and adopted the comprehensive City of Yreka Master Plan of Drainage in 2005. The proposed Project would be connected to the City’s municipal stormwater drainage facilities.

Solid Waste

The County of Siskiyou owns and operates a transfer site southeast of Yreka off Oberlin Road. By agreement between the City of Yreka and the County of Siskiyou, the City has access to the facility for 25 years, commencing in 2007. Solid waste from Yreka is subsequently transported and disposed of at the Anderson Solid Waste Landfill in Shasta County. Under existing state permits, the landfill may accept 1,850 tons of solid waste per day until the year 2055 and had an estimated remaining capacity of 16,840,000 cubic yards in 2008 (CalRecycle 2012a).

4.18.2 Utilities and Service Systems (XVIII) Environmental Checklist and Discussion

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact a) Exceed wastewater treatment requirements of the

applicable Regional Water Quality Control Board?

Wastewater disposal is regulated under the federal Clean Water Act and the state Porter-Cologne Water Quality Control Act. The North Coast RWQCB implements these acts by administering the NPDES, issuing water discharge permits, and establishing best management practices. Implementation of the proposed Project would result in increased wastewater flows that would be

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Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact b) Require or result in the construction of new water or wastewater treatment facilities or expansion of

existing facilities, the construction of which could cause significant environmental effects?

The proposed Project would not increase demand for water supply and/or wastewater disposal beyond the capacity of the water delivery and wastewater collection systems, as these systems were constructed to accommodate growth, including development of the proposed Project for commercial uses. In terms of water supply facilities, the City’s water service line is capable of meeting the needs of the Project. The Project will have a less than significant impact on water supply facilities.

In terms of wastewater disposal facilities, the City has recently completed a project consisting of repair or replacement of portions of the City’s existing municipal wastewater collection system at 13 locations, and upgrades of waste treatment and sludge dewatering facilities at the City’s existing Wastewater Treatment Plant. The result of this wastewater treatment and collection project will be to accommodate Yreka’s wastewater disposal needs for the life of the General Plan. The completed Project is consistent with the land use assumptions contained in the General Plan and would not increase demand for wastewater disposal beyond the capacity of the current wastewater disposal system.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact c) Require or result in the construction of new stormwater drainage facilities or expansion of

existing facilities, the construction of which could cause significant environmental effects?

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The proposed Project would increase the amount of impervious surfaces on the Project site, resulting in greater stormwater runoff potential. However, the addition of these surfaces would not significantly impact stormwater systems, as there are sufficient pervious surfaces adjacent to the Project site. Additionally, as previously described the proposed Project includes four stormwater retention basins. All stormwater flowing from the Project’s parking lot and new building would flow into one of these basins. The basins would be designed to retain all stormwater from the Project. As such, existing stormwater retention and conveyance systems would be unaffected. A less than significant impact would occur.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact d) Have sufficient water supplies available to serve the project from existing entitlements and

resources, or are new or expanded entitlements needed?

As previously stated, the City has a current winter water usage of 1.0 mgd, while summer usage can increase up to 6.0 mgd during peak demands. Water use data for the Proposed Project was obtained from rates provided by the U.S. Energy Information Administration, which reports total gallons of water used per year per square footage for commercial buildings (20 gallons per square foot annually) (2017). The Proposed Project is expected to use 182,000 gallons used annually (9,100 SF x 20 gallons/SF/day). This equates to 499 gallons per day.

According to the City General Plan, the City’s water service line is capable of up to 15 cubic feet per second of flow, which equates to a potential serviceability of 10.5 million gallons per day, which is more than adequate to meet the needs for the life of the General Plan. The Proposed Project is consistent with the land use assumptions contained in the General Plan and would not increase demand for water beyond the supplies.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact e) Result in a determination by the wastewater treatment provider, which serves or may serve the project that it has adequate capacity to serve the project’s projected demand in addition to the provider’s existing commitments?

See Response 4.18.2(a). A less than significant would occur.

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Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact f) Be served by a landfill with sufficient permitted capacity to accommodate the project’s solid waste disposal needs?

Solid waste from the Project site will be transported to the transfer station south of Yreka off Oberlin Road and subsequently disposed of at the Anderson Solid Waste Landfill in Shasta County consistent with the solid waste disposal process for the whole of the City. Under existing state permits, the landfill may accept 1,850 tons of solid waste per day until the year 2055.

Using waste generation rates published by the California Department of Resources Recycling and Recovery (CalRecycle), the proposed Project is estimated to generate approximately 19.7 tons of solid waste during construction (9,100 square feet of nonresidential building space x 4.34 = 39,494 pounds / 2000 tons per pound= 19.7 tons). The California Building Code requires that a minimum of 65 percent of construction waste be diverted from the landfill.

In terms of Project operations, approximately 15.4 tons of solid waste would be generated annually (assuming all 8 employees work every day). This estimate was obtained using ratios obtained from CalRecycle’s (2012b) estimated solid waste generation rates for commercial and institutional establishments, which projects the generation of approximately 10.53 pounds of solid waste per employee each day (8 x 10.53 = 84.2 pounds daily. 84.2 pounds x 365 = 30,733 pounds/ 2,000 pounds= 15.4 tons annually).

The proposed Project would generate a total of 19.7 tons of solid waste over the duration of construction activities, 65 percent of which must be diverted from the landfill, and a total of 15.4 tons annually during Project operations. Under existing state permits, the landfill may accept 1,850 tons of solid waste per day until the year 2055. Therefore, the Project’s daily contribution to the landfill relative to the landfill’s capacity is considered less than significant.

Less than Potentially Significant with Less than Significant Mitigation Significant No Would the Project: Impact Incorporated Impact Impact g) Comply with federal, state, and local statutes and

regulations related to solid waste?

The proposed Project is required to comply with all state and federal statutes regarding solid waste. This impact is considered less than significant.

4.18.3 Mitigation Measures

No significant impacts were identified, and no mitigation measures are required.

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4.19 Mandatory Findings of Significance

4.19.1 Mandatory Findings of Significance (XIX.) Environmental Checklist and Discussion

Less than Potentially Significant with Less than Significant Mitigation Significant No Does the Project: Impact Incorporated Impact Impact a) Have the potential to degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory?

Several IS/MND subsections have identified the potential for significant environmental impacts: 4.3, Air Quality; 4.4, Biological Resources, and 4.5, Cultural Resources. However, with the implementation of mitigation measures included in the relevant subsections of this document, these potential impacts would be reduced to a level that is considered less than significant.

Less than Potentially Significant with Less than Significant Mitigation Significant No Does the Project: Impact Incorporated Impact Impact b) Have impacts that are individually limited, but cumulatively considerable? (“Cumulatively considerable” means that the incremental effects of a project are considerable when viewed in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects)?

The proposed Project, in conjunction with other approved or pending projects in the region, has the potential to result in potentially cumulatively impacts to the physical environment for analysis areas which include noise and air quality. However, with the implementation of mitigation measures included in the relevant subsections of this IS/MND, the proposed Project’s potential impacts would be reduced to a level that is considered less than significant.

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Less than Potentially Significant with Less than Significant Mitigation Significant No Does the Project: Impact Incorporated Impact Impact c) Have environmental effects that will cause substantial adverse effects on human beings, either directly or indirectly?

With the implementation of mitigation measures included in this IS/MND, the Project will not result in adverse impacts on human beings.

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SECTION 5.0 LIST OF PREPARERS

5.1 LEAD AGENCY NAME

City of Yreka

Liz Casson, City Clerk

5.2 ECORP CONSULTING, INC.

CEQA Documentation/Air Quality/Biological Resources/Cultural Resources/Greenhouse Gas/Noise

Scott Friend, CEQA Project Director Seth Myers, CEQA Project Manager Lindsay Taylor, Associate Environmental Planner Casey Peters, Associate Biologist Roger Mason, Historian Brian Fedrow, Production Manager, Technical Editor

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SECTION 6.0 BIBLIOGRAPHY

Aesthetics:

DOT (California Department of Transportation). 2017. Scenic Highway System Lists. http://www.dot.ca.gov/design/lap/livability/scenic- highways/.

Agriculture and Forestry Resources:

DOC (California Department of Conservation). 2016. Land Conservation Act Maps: Siskiyou County Williamson Act FY 2015/2016. http://www.conservation.ca.gov/dlrp/lca.

2017. Siskiyou County Important Farmland 2016. http://www.conservation.ca.gov/dlrp/fmmp/Pages/Siskiyou.aspx.

Air Quality:

CARB (California Air Resources Board). 2017. Area Designation Maps/ State and National. https://www.arb.ca.gov/desig/adm/adm.htm.

DOC (California Department of Conservation). 2000. A General Location Guide for Ultramafic Rocks in California - Areas More Likely to Contain Naturally Occurring Asbestos.

NCUAQMD (North Coast Unified Air Quality Management District). 2010. Rule 110 New Source Review and Prevention of Significant Determination. Adopted 1982; amended 2010.

SCAQMD (South Coast Air Quality Management District). 1992 Federal Attainment Plan for Carbon Monoxide.

Greenhouse Gases:

SCAQMD (South Coast Air Quality Management District). 2008. Draft Guidance Document – Interim CEQA Greenhouse Gas (GHG) Significance Threshold.

Bibliography 6-1 April 2018 (2018-017)

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Hazards and Hazardous Materials:

DTSC (California Department of Toxic Substances Control). 2018. EnviroStor. http://www.envirostor.dtsc.ca.gov/public/.

SWRCB (State Water Resources Control Board). 2015. GeoTracker. http://geotracker.waterboards.ca.gov/.

Hydrology and Water Quality:

FEMA (Federal Emergency Management Agency). 2011. National Flood Hazard Layer (Official). FIRM Panels: 06093C1557D. https://fema.maps.arcgis.com/home/webmap/viewer.html?webmap=cbe088e7c8704464aa0f c34eb99e7f30

Yreka, City of. 2003. City of Yreka General Plan, 2002–2022. http://ci.yreka.ca.us/sites/ci.yreka.ca.us/files/City-Government/Planning/General-Plan.pdf.

Land Use and Planning:

Yreka, City of. 2003. City of Yreka General Plan, 2002–2022. http://ci.yreka.ca.us/sites/ci.yreka.ca.us/files/City-Government/Planning/General-Plan.pdf.

Noise:

Caltrans (California Department of Transportation). 2013a. Technical Noise Supplement to the Traffic Noise Analysis Protocol. http://www.dot.ca.gov/hq/env/noise/.

2013b. Transportation and Construction Vibration Guidance Manual.

2017. 2016 Traffic Volumes (for ALL vehicles on CA State Highways). http://www.dot.ca.gov/trafficops/census/volumes2016/.

EPA (US Environmental Protection Agency). 1971. Noise from Construction Equipment and Operations, Building Equipment, and Home Appliances.

Bibliography 6-2 April 2018 (2018-017)

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FTA (Federal Transit Administration). 2006. Transit Noise and Vibration Impact Assessment.

ITE (Institute of Transportation Engineers). 2012. ITE Trip Generation Rates - 9th Edition.

Yreka, City of. 2003. City of Yreka General Plan, 2002–2022. http://ci.yreka.ca.us/sites/ci.yreka.ca.us/files/City-Government/Planning/General-Plan.pdf.

2004. City of Yreka Municipal Code.

Public Services:

Yreka, City of. 2018. Parks. http://ci.yreka.ca.us/parks-and-facilities/parks/articles/parks.

Population and Housing:

DOT (California Department of Finance). 2017. E-5 Population and Housing Estimates for Cities, Counties, and the State, 2011- 2017 with 2010 Census Benchmark. http://www.dof.ca.gov/Forecasting/Demographics/Estimates/E-5/.

Yreka, City of. 2003. City of Yreka General Plan, 2002–2022. http://ci.yreka.ca.us/sites/ci.yreka.ca.us/files/City-Government/Planning/General-Plan.pdf.

Recreation:

Yreka, City of. 2018. City of Yreka Parks and Facilities. http://ci.yreka.ca.us/parks-and-facilities.

Transportation/ Traffic:

Yreka, City of. 2006. City of Yreka Bicycle Transportation Plan.

Bibliography 6-3 April 2018 (2018-017)

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Utilities and Service Systems:

CalRecycle (California Department of Resources Recycling and Recovery).

2012a. “Solid Waste Facility Listing/Details.” http://www.calrecycle.ca.gov/SWFacilities/Directory/45-AA-0020/Detail/.

2012b. Estimated Solid Waste Generation Rates for Commercial and Institutional Establishments.

U.S. Energy Information Administration. 2017. 2012 Commercial Buildings Energy Consumption Survey: Water Consumption in Large Buildings Summary. https://www.eia.gov/consumption/commercial/reports/2012/water/

Yreka, City of. 2003. City of Yreka General Plan, 2002–2022. http://ci.yreka.ca.us/sites/ci.yreka.ca.us/files/City-Government/Planning/General-Plan.pdf.

2015. 2015 Urban Water Management Plan. https://ci.yreka.ca.us/sites/ci.yreka.ca.us/assets/files/Draft_2015_Urban_Water_Management_P lan.pdf.

2013. 2013 Water and Wastewater Utility Rate Study. http://ci.yreka.ca.us/sites/ci.yreka.ca.us/assets/files/DRAFT_Water_and_Wastewater_Utility_R ate_Study_Report_May_2013.pdf

2017. Email Communication with City of Yreka Public Works Staff, Rob Taylor [[email protected]]. March 29, 2018.

Bibliography 6-4 April 2018 (2018-017)

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SECTION 7.0 LIST OF APPENDICES

Appendix A – Air Quality Modeling Outputs

Appendix B – Biological Resources Assessment

Appendix C – Cultural Resources Records Search & Literature Review (CONFIDENTIAL)

Appendix D – Geotechnical Engineering Investigation

Appendix E – Greenhouse Gas Emissions Modeling Outputs Appendix F – Roadway Noise Calculations

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APPENDIX A

Air Quality Modeling Outputs

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1.0 Project Characteristics

1.1 Land Usage

Land Uses Size Metric Lot Acreage Floor Surface Area Population

Free-Standing Discount Store 9.10 1000sqft 0.34 9,100.00 0

Parking Lot 36.00 Space 0.32 17,583.00 0

Other Non-Asphalt Surfaces 11.57 1000sqft 0.27 11,570.00 0

1.2 Other Project Characteristics

Urbanization Urban Wind Speed (m/s) 2.2 Precipitation Freq (Days) 85

Climate Zone 14 Operational Year 2019

Utility Company PacifiCorp

CO2 Intensity 1656.39 CH4 Intensity 0.029 N2O Intensity 0.006 (lb/MWhr) (lb/MWhr) (lb/MWhr)

1.3 User Entered Comments & Non-Default Data

Project Characteristics - Land Use - Adjusted acreage and square footage per Project Description. Construction Phase - Construction, paving, and painting assumed to occur simultaneously. Construction Off-road Equipment Mitigation - Reduction percentages per SCAQMD CEQA Handbook. CalEEMod Version: CalEEMod.2016.3.2 Page 2 of 23 Date: 2/8/2018 10:15 AM

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Table Name Column Name Default Value New Value

tblConstDustMitigation CleanPavedRoadPercentReduction 0 40

tblConstDustMitigation WaterUnpavedRoadVehicleSpeed 0 15

tblConstructionPhase NumDays 5.00 100.00

tblConstructionPhase NumDays 5.00 100.00

tblConstructionPhase PhaseEndDate 10/18/2018 10/4/2018

tblConstructionPhase PhaseEndDate 10/11/2018 10/4/2018

tblConstructionPhase PhaseStartDate 10/12/2018 5/18/2018

tblConstructionPhase PhaseStartDate 10/5/2018 5/18/2018

tblLandUse LandUseSquareFeet 14,400.00 17,583.00

tblLandUse LotAcreage 0.21 0.34

2.0 Emissions Summary CalEEMod Version: CalEEMod.2016.3.2 Page 3 of 23 Date: 2/8/2018 10:15 AM

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2.1 Overall Construction (Maximum Daily Emission) Unmitigated Construction

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Year lb/day lb/day

2018 4.9790 22.8817 19.4150 0.0310 0.8349 1.3812 1.7176 0.4356 1.2865 1.3767 0.0000 3,043.178 3,043.178 0.7246 0.0000 3,061.292 6 6 4

Maximum 4.9790 22.8817 19.4150 0.0310 0.8349 1.3812 1.7176 0.4356 1.2865 1.3767 0.0000 3,043.178 3,043.178 0.7246 0.0000 3,061.292 6 6 4

Mitigated Construction

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Year lb/day lb/day

2018 4.9790 22.8817 19.4150 0.0310 0.3923 1.3812 1.6032 0.2010 1.2865 1.3486 0.0000 3,043.178 3,043.178 0.7246 0.0000 3,061.292 6 6 4

Maximum 4.9790 22.8817 19.4150 0.0310 0.3923 1.3812 1.6032 0.2010 1.2865 1.3486 0.0000 3,043.178 3,043.178 0.7246 0.0000 3,061.292 6 6 4

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio-CO2 Total CO2 CH4 N20 CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Percent 0.00 0.00 0.00 0.00 53.01 0.00 6.66 53.86 0.00 2.04 0.00 0.00 0.00 0.00 0.00 0.00 Reduction CalEEMod Version: CalEEMod.2016.3.2 Page 4 of 23 Date: 2/8/2018 10:15 AM

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2.2 Overall Operational Unmitigated Operational

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Area 0.2690 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 005 003 005 005 005 005 005

Energy 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 003 004 003 003 003 003 004 004

Mobile 1.9908 15.1092 16.3199 0.0490 2.1702 0.0652 2.2354 0.5824 0.0618 0.6441 5,003.483 5,003.483 0.4532 5,014.813 6 6 7

Total 2.2617 15.1269 16.3405 0.0491 2.1702 0.0666 2.2367 0.5824 0.0631 0.6455 5,024.643 5,024.643 0.4536 3.9000e- 5,036.100 7 7 004 3

Mitigated Operational

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Area 0.2690 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 005 003 005 005 005 005 005

Energy 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 003 004 003 003 003 003 004 004

Mobile 1.9908 15.1092 16.3199 0.0490 2.1702 0.0652 2.2354 0.5824 0.0618 0.6441 5,003.483 5,003.483 0.4532 5,014.813 6 6 7

Total 2.2617 15.1269 16.3405 0.0491 2.1702 0.0666 2.2367 0.5824 0.0631 0.6455 5,024.643 5,024.643 0.4536 3.9000e- 5,036.100 7 7 004 3 CalEEMod Version: CalEEMod.2016.3.2 Page 5 of 23 Date: 2/8/2018 10:15 AM

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ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio-CO2 Total CO2 CH4 N20 CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Percent 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Reduction

3.0 Construction Detail

Construction Phase

Phase Phase Name Phase Type Start Date End Date Num Days Num Days Phase Description Number Week

1 Site Preparation Site Preparation 5/15/2018 5/15/2018 5 1

2 Grading Grading 5/16/2018 5/17/2018 5 2

3 Building Construction Building Construction 5/18/2018 10/4/2018 5 100

4 Paving Paving 5/18/2018 10/4/2018 5 100

5 Architectural Coating Architectural Coating 5/18/2018 10/4/2018 5 100

Acres of Grading (Site Preparation Phase): 0.5

Acres of Grading (Grading Phase): 0

Acres of Paving: 0.59

Residential Indoor: 0; Residential Outdoor: 0; Non-Residential Indoor: 13,650; Non-Residential Outdoor: 4,550; Striped Parking Area: 1,749 (Architectural Coating – sqft)

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Phase Name Offroad Equipment Type Amount Usage Hours Horse Power Load Factor

Architectural Coating Air Compressors 1 6.00 78 0.48

Paving Cement and Mortar Mixers 4 6.00 9 0.56

Grading Concrete/Industrial Saws 1 8.00 81 0.73

Building Construction Cranes 1 4.00 231 0.29

Building Construction Forklifts 2 6.00 89 0.20

Site Preparation Graders 1 8.00 187 0.41

Paving Pavers 1 7.00 130 0.42

Paving Rollers 1 7.00 80 0.38

Grading Rubber Tired Dozers 1 1.00 247 0.40

Building Construction Tractors/Loaders/Backhoes 2 8.00 97 0.37

Grading Tractors/Loaders/Backhoes 2 6.00 97 0.37

Paving Tractors/Loaders/Backhoes 1 7.00 97 0.37

Site Preparation Tractors/Loaders/Backhoes 1 8.00 97 0.37

Trips and VMT

Phase Name Offroad Equipment Worker Trip Vendor Trip Hauling Trip Worker Trip Vendor Trip Hauling Trip Worker Vehicle Vendor Hauling Count Number Number Number Length Length Length Class Vehicle Class Vehicle Class

Site Preparation 2 5.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

Grading 4 10.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

Building Construction 5 15.00 6.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

Paving 7 18.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

Architectural Coating 1 3.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

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Water Exposed Area Reduce Vehicle Speed on Unpaved Roads Clean Paved Roads

3.2 Site Preparation - 2018 Unmitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Fugitive Dust 0.5303 0.0000 0.5303 0.0573 0.0000 0.0573 0.0000 0.0000

Off-Road 0.7858 9.7572 4.2514 9.7600e- 0.4180 0.4180 0.3846 0.3846 982.7113 982.7113 0.3059 990.3596 003

Total 0.7858 9.7572 4.2514 9.7600e- 0.5303 0.4180 0.9483 0.0573 0.3846 0.4418 982.7113 982.7113 0.3059 990.3596 003 CalEEMod Version: CalEEMod.2016.3.2 Page 8 of 23 Date: 2/8/2018 10:15 AM

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3.2 Site Preparation - 2018 Unmitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.0420 0.0302 0.3152 4.8000e- 0.0411 4.5000e- 0.0415 0.0109 4.1000e- 0.0113 47.8568 47.8568 3.2900e- 47.9392 004 004 004 003

Total 0.0420 0.0302 0.3152 4.8000e- 0.0411 4.5000e- 0.0415 0.0109 4.1000e- 0.0113 47.8568 47.8568 3.2900e- 47.9392 004 004 004 003

Mitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Fugitive Dust 0.2386 0.0000 0.2386 0.0258 0.0000 0.0258 0.0000 0.0000

Off-Road 0.7858 9.7572 4.2514 9.7600e- 0.4180 0.4180 0.3846 0.3846 0.0000 982.7113 982.7113 0.3059 990.3596 003

Total 0.7858 9.7572 4.2514 9.7600e- 0.2386 0.4180 0.6566 0.0258 0.3846 0.4103 0.0000 982.7113 982.7113 0.3059 990.3596 003 CalEEMod Version: CalEEMod.2016.3.2 Page 9 of 23 Date: 2/8/2018 10:15 AM

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3.2 Site Preparation - 2018 Mitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.0420 0.0302 0.3152 4.8000e- 0.0268 4.5000e- 0.0272 7.3900e- 4.1000e- 7.8000e- 47.8568 47.8568 3.2900e- 47.9392 004 004 003 004 003 003

Total 0.0420 0.0302 0.3152 4.8000e- 0.0268 4.5000e- 0.0272 7.3900e- 4.1000e- 7.8000e- 47.8568 47.8568 3.2900e- 47.9392 004 004 003 004 003 003

3.3 Grading - 2018 Unmitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Fugitive Dust 0.7528 0.0000 0.7528 0.4138 0.0000 0.4138 0.0000 0.0000

Off-Road 1.0643 9.4295 7.7762 0.0120 0.6228 0.6228 0.5943 0.5943 1,169.350 1,169.350 0.2254 1,174.985 2 2 7

Total 1.0643 9.4295 7.7762 0.0120 0.7528 0.6228 1.3755 0.4138 0.5943 1.0081 1,169.350 1,169.350 0.2254 1,174.985 2 2 7 CalEEMod Version: CalEEMod.2016.3.2 Page 10 of 23 Date: 2/8/2018 10:15 AM

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3.3 Grading - 2018 Unmitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.0841 0.0605 0.6304 9.7000e- 0.0822 8.9000e- 0.0830 0.0218 8.2000e- 0.0226 95.7136 95.7136 6.5900e- 95.8783 004 004 004 003

Total 0.0841 0.0605 0.6304 9.7000e- 0.0822 8.9000e- 0.0830 0.0218 8.2000e- 0.0226 95.7136 95.7136 6.5900e- 95.8783 004 004 004 003

Mitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Fugitive Dust 0.3387 0.0000 0.3387 0.1862 0.0000 0.1862 0.0000 0.0000

Off-Road 1.0643 9.4295 7.7762 0.0120 0.6228 0.6228 0.5943 0.5943 0.0000 1,169.350 1,169.350 0.2254 1,174.985 2 2 7

Total 1.0643 9.4295 7.7762 0.0120 0.3387 0.6228 0.9615 0.1862 0.5943 0.7805 0.0000 1,169.350 1,169.350 0.2254 1,174.985 2 2 7 CalEEMod Version: CalEEMod.2016.3.2 Page 11 of 23 Date: 2/8/2018 10:15 AM

Dollar General - Siskiyou County, Summer

3.3 Grading - 2018 Mitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.0841 0.0605 0.6304 9.7000e- 0.0536 8.9000e- 0.0545 0.0148 8.2000e- 0.0156 95.7136 95.7136 6.5900e- 95.8783 004 004 004 003

Total 0.0841 0.0605 0.6304 9.7000e- 0.0536 8.9000e- 0.0545 0.0148 8.2000e- 0.0156 95.7136 95.7136 6.5900e- 95.8783 004 004 004 003

3.4 Building Construction - 2018 Unmitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Off-Road 1.0848 11.0316 7.7512 0.0114 0.7087 0.7087 0.6520 0.6520 1,146.532 1,146.532 0.3569 1,155.455 3 3 5

Total 1.0848 11.0316 7.7512 0.0114 0.7087 0.7087 0.6520 0.6520 1,146.532 1,146.532 0.3569 1,155.455 3 3 5 CalEEMod Version: CalEEMod.2016.3.2 Page 12 of 23 Date: 2/8/2018 10:15 AM

Dollar General - Siskiyou County, Summer

3.4 Building Construction - 2018 Unmitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0529 0.8820 0.3161 1.9200e- 0.0407 7.8600e- 0.0485 0.0117 7.5200e- 0.0192 200.4916 200.4916 0.0155 200.8781 003 003 003

Worker 0.1261 0.0907 0.9456 1.4500e- 0.1232 1.3400e- 0.1246 0.0327 1.2300e- 0.0339 143.5704 143.5704 9.8800e- 143.8175 003 003 003 003

Total 0.1789 0.9727 1.2617 3.3700e- 0.1639 9.2000e- 0.1731 0.0444 8.7500e- 0.0532 344.0620 344.0620 0.0253 344.6955 003 003 003

Mitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Off-Road 1.0848 11.0316 7.7512 0.0114 0.7087 0.7087 0.6520 0.6520 0.0000 1,146.532 1,146.532 0.3569 1,155.455 3 3 5

Total 1.0848 11.0316 7.7512 0.0114 0.7087 0.7087 0.6520 0.6520 0.0000 1,146.532 1,146.532 0.3569 1,155.455 3 3 5 CalEEMod Version: CalEEMod.2016.3.2 Page 13 of 23 Date: 2/8/2018 10:15 AM

Dollar General - Siskiyou County, Summer

3.4 Building Construction - 2018 Mitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0529 0.8820 0.3161 1.9200e- 0.0291 7.8600e- 0.0370 8.8700e- 7.5200e- 0.0164 200.4916 200.4916 0.0155 200.8781 003 003 003 003

Worker 0.1261 0.0907 0.9456 1.4500e- 0.0804 1.3400e- 0.0817 0.0222 1.2300e- 0.0234 143.5704 143.5704 9.8800e- 143.8175 003 003 003 003

Total 0.1789 0.9727 1.2617 3.3700e- 0.1095 9.2000e- 0.1187 0.0310 8.7500e- 0.0398 344.0620 344.0620 0.0253 344.6955 003 003 003

3.5 Paving - 2018 Unmitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Off-Road 0.9202 8.7447 7.2240 0.0113 0.5109 0.5109 0.4735 0.4735 1,070.137 1,070.137 0.3017 1,077.679 2 2 8

Paving 8.3800e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 003

Total 0.9286 8.7447 7.2240 0.0113 0.5109 0.5109 0.4735 0.4735 1,070.137 1,070.137 0.3017 1,077.679 2 2 8 CalEEMod Version: CalEEMod.2016.3.2 Page 14 of 23 Date: 2/8/2018 10:15 AM

Dollar General - Siskiyou County, Summer

3.5 Paving - 2018 Unmitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.1513 0.1088 1.1347 1.7400e- 0.1479 1.6100e- 0.1495 0.0392 1.4800e- 0.0407 172.2845 172.2845 0.0119 172.5810 003 003 003

Total 0.1513 0.1088 1.1347 1.7400e- 0.1479 1.6100e- 0.1495 0.0392 1.4800e- 0.0407 172.2845 172.2845 0.0119 172.5810 003 003 003

Mitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Off-Road 0.9202 8.7447 7.2240 0.0113 0.5109 0.5109 0.4735 0.4735 0.0000 1,070.137 1,070.137 0.3017 1,077.679 2 2 8

Paving 8.3800e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 003

Total 0.9286 8.7447 7.2240 0.0113 0.5109 0.5109 0.4735 0.4735 0.0000 1,070.137 1,070.137 0.3017 1,077.679 2 2 8 CalEEMod Version: CalEEMod.2016.3.2 Page 15 of 23 Date: 2/8/2018 10:15 AM

Dollar General - Siskiyou County, Summer

3.5 Paving - 2018 Mitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.1513 0.1088 1.1347 1.7400e- 0.0965 1.6100e- 0.0981 0.0266 1.4800e- 0.0281 172.2845 172.2845 0.0119 172.5810 003 003 003

Total 0.1513 0.1088 1.1347 1.7400e- 0.0965 1.6100e- 0.0981 0.0266 1.4800e- 0.0281 172.2845 172.2845 0.0119 172.5810 003 003 003

3.6 Architectural Coating - 2018 Unmitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Archit. Coating 2.3116 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Off-Road 0.2986 2.0058 1.8542 2.9700e- 0.1506 0.1506 0.1506 0.1506 281.4485 281.4485 0.0267 282.1171 003

Total 2.6102 2.0058 1.8542 2.9700e- 0.1506 0.1506 0.1506 0.1506 281.4485 281.4485 0.0267 282.1171 003 CalEEMod Version: CalEEMod.2016.3.2 Page 16 of 23 Date: 2/8/2018 10:15 AM

Dollar General - Siskiyou County, Summer

3.6 Architectural Coating - 2018 Unmitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.0252 0.0181 0.1891 2.9000e- 0.0246 2.7000e- 0.0249 6.5400e- 2.5000e- 6.7800e- 28.7141 28.7141 1.9800e- 28.7635 004 004 003 004 003 003

Total 0.0252 0.0181 0.1891 2.9000e- 0.0246 2.7000e- 0.0249 6.5400e- 2.5000e- 6.7800e- 28.7141 28.7141 1.9800e- 28.7635 004 004 003 004 003 003

Mitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Archit. Coating 2.3116 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Off-Road 0.2986 2.0058 1.8542 2.9700e- 0.1506 0.1506 0.1506 0.1506 0.0000 281.4485 281.4485 0.0267 282.1171 003

Total 2.6102 2.0058 1.8542 2.9700e- 0.1506 0.1506 0.1506 0.1506 0.0000 281.4485 281.4485 0.0267 282.1171 003 CalEEMod Version: CalEEMod.2016.3.2 Page 17 of 23 Date: 2/8/2018 10:15 AM

Dollar General - Siskiyou County, Summer

3.6 Architectural Coating - 2018 Mitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.0252 0.0181 0.1891 2.9000e- 0.0161 2.7000e- 0.0163 4.4300e- 2.5000e- 4.6800e- 28.7141 28.7141 1.9800e- 28.7635 004 004 003 004 003 003

Total 0.0252 0.0181 0.1891 2.9000e- 0.0161 2.7000e- 0.0163 4.4300e- 2.5000e- 4.6800e- 28.7141 28.7141 1.9800e- 28.7635 004 004 003 004 003 003

4.0 Operational Detail - Mobile

4.1 Mitigation Measures Mobile CalEEMod Version: CalEEMod.2016.3.2 Page 18 of 23 Date: 2/8/2018 10:15 AM

Dollar General - Siskiyou County, Summer

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Mitigated 1.9908 15.1092 16.3199 0.0490 2.1702 0.0652 2.2354 0.5824 0.0618 0.6441 5,003.483 5,003.483 0.4532 5,014.813 6 6 7

Unmitigated 1.9908 15.1092 16.3199 0.0490 2.1702 0.0652 2.2354 0.5824 0.0618 0.6441 5,003.483 5,003.483 0.4532 5,014.813 6 6 7

4.2 Trip Summary Information

Average Daily Trip Rate Unmitigated Mitigated Land Use Weekday Saturday Sunday Annual VMT Annual VMT

Free-Standing Discount Store 520.88 646.74 512.88 838,445 838,445 Other Non-Asphalt Surfaces 0.00 0.00 0.00 Parking Lot 0.00 0.00 0.00 Total 520.88 646.74 512.88 838,445 838,445

4.3 Trip Type Information

Miles Trip % Trip Purpose %

Land Use H-W or C-W H-S or C-C H-O or C-NW H-W or C-W H-S or C-C H-O or C-NW Primary Diverted Pass-by Free-Standing Discount Store 9.50 7.30 7.30 12.20 68.80 19.00 47.5 35.5 17 Other Non-Asphalt Surfaces 9.50 7.30 7.30 0.00 0.00 0.00 0 0 0 Parking Lot 9.50 7.30 7.30 0.00 0.00 0.00 0 0 0

4.4 Fleet Mix CalEEMod Version: CalEEMod.2016.3.2 Page 19 of 23 Date: 2/8/2018 10:15 AM

Dollar General - Siskiyou County, Summer

Land Use LDA LDT1 LDT2 MDV LHD1 LHD2 MHD HHD OBUS UBUS MCY SBUS MH Free-Standing Discount Store 0.472396 0.042813 0.180241 0.124142 0.040823 0.007259 0.008637 0.112950 0.001295 0.001737 0.005316 0.001033 0.001359

Other Non-Asphalt Surfaces 0.472396 0.042813 0.180241 0.124142 0.040823 0.007259 0.008637 0.112950 0.001295 0.001737 0.005316 0.001033 0.001359

Parking Lot 0.472396 0.042813 0.180241 0.124142 0.040823 0.007259 0.008637 0.112950 0.001295 0.001737 0.005316 0.001033 0.001359

5.0 Energy Detail

Historical Energy Use: N

5.1 Mitigation Measures Energy

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

NaturalGas 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 Mitigated 003 004 003 003 003 003 004 004

NaturalGas 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 Unmitigated 003 004 003 003 003 003 004 004 CalEEMod Version: CalEEMod.2016.3.2 Page 20 of 23 Date: 2/8/2018 10:15 AM

Dollar General - Siskiyou County, Summer

5.2 Energy by Land Use - NaturalGas Unmitigated

NaturalGa ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e s Use PM10 PM10 Total PM2.5 PM2.5 Total

Land Use kBTU/yr lb/day lb/day

Free-Standing 179.756 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 Discount Store 003 004 003 003 003 003 004 004

Other Non- 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Asphalt Surfaces

Parking Lot 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 003 004 003 003 003 003 004 004

Mitigated

NaturalGa ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e s Use PM10 PM10 Total PM2.5 PM2.5 Total

Land Use kBTU/yr lb/day lb/day

Free-Standing 0.179756 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 Discount Store 003 004 003 003 003 003 004 004

Other Non- 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Asphalt Surfaces

Parking Lot 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 003 004 003 003 003 003 004 004

6.0 Area Detail CalEEMod Version: CalEEMod.2016.3.2 Page 21 of 23 Date: 2/8/2018 10:15 AM

Dollar General - Siskiyou County, Summer 6.0 Area Detail

6.1 Mitigation Measures Area

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Mitigated 0.2690 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 005 003 005 005 005 005 005

Unmitigated 0.2690 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 005 003 005 005 005 005 005

6.2 Area by SubCategory Unmitigated

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

SubCategory lb/day lb/day

Architectural 0.0633 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Coating

Consumer 0.2051 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Products

Landscaping 5.5000e- 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 004 005 003 005 005 005 005 005

Total 0.2690 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 005 003 005 005 005 005 005 CalEEMod Version: CalEEMod.2016.3.2 Page 22 of 23 Date: 2/8/2018 10:15 AM

Dollar General - Siskiyou County, Summer

6.2 Area by SubCategory Mitigated

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

SubCategory lb/day lb/day

Architectural 0.0633 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Coating

Consumer 0.2051 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Products

Landscaping 5.5000e- 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 004 005 003 005 005 005 005 005

Total 0.2690 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 005 003 005 005 005 005 005

7.0 Water Detail

7.1 Mitigation Measures Water

8.0 Waste Detail

8.1 Mitigation Measures Waste

9.0 Operational Offroad

Equipment Type Number Hours/Day Days/Year Horse Power Load Factor Fuel Type

10.0 Stationary Equipment

Fire Pumps and Emergency Generators CalEEMod Version: CalEEMod.2016.3.2 Page 23 of 23 Date: 2/8/2018 10:15 AM

Dollar General - Siskiyou County, Summer

Equipment Type Number Hours/Day Hours/Year Horse Power Load Factor Fuel Type

Boilers

Equipment Type Number Heat Input/Day Heat Input/Year Boiler Rating Fuel Type

User Defined Equipment

Equipment Type Number

11.0 Vegetation CalEEMod Version: CalEEMod.2016.3.2 Page 1 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

Dollar General Siskiyou County, Winter

1.0 Project Characteristics

1.1 Land Usage

Land Uses Size Metric Lot Acreage Floor Surface Area Population

Free-Standing Discount Store 9.10 1000sqft 0.34 9,100.00 0

Parking Lot 36.00 Space 0.32 17,583.00 0

Other Non-Asphalt Surfaces 11.57 1000sqft 0.27 11,570.00 0

1.2 Other Project Characteristics

Urbanization Urban Wind Speed (m/s) 2.2 Precipitation Freq (Days) 85

Climate Zone 14 Operational Year 2019

Utility Company PacifiCorp

CO2 Intensity 1656.39 CH4 Intensity 0.029 N2O Intensity 0.006 (lb/MWhr) (lb/MWhr) (lb/MWhr)

1.3 User Entered Comments & Non-Default Data

Project Characteristics - Land Use - Adjusted acreage and square footage per Project Description. Construction Phase - Construction, paving, and painting assumed to occur simultaneously. Construction Off-road Equipment Mitigation - Reduction percentages per SCAQMD CEQA Handbook. CalEEMod Version: CalEEMod.2016.3.2 Page 2 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

Table Name Column Name Default Value New Value

tblConstDustMitigation CleanPavedRoadPercentReduction 0 40

tblConstDustMitigation WaterUnpavedRoadVehicleSpeed 0 15

tblConstructionPhase NumDays 5.00 100.00

tblConstructionPhase NumDays 5.00 100.00

tblConstructionPhase PhaseEndDate 10/18/2018 10/4/2018

tblConstructionPhase PhaseEndDate 10/11/2018 10/4/2018

tblConstructionPhase PhaseStartDate 10/12/2018 5/18/2018

tblConstructionPhase PhaseStartDate 10/5/2018 5/18/2018

tblLandUse LandUseSquareFeet 14,400.00 17,583.00

tblLandUse LotAcreage 0.21 0.34

2.0 Emissions Summary CalEEMod Version: CalEEMod.2016.3.2 Page 3 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

2.1 Overall Construction (Maximum Daily Emission) Unmitigated Construction

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Year lb/day lb/day

2018 5.0325 23.0009 19.8175 0.0308 0.8349 1.3814 1.7178 0.4356 1.2867 1.3768 0.0000 3,018.022 3,018.022 0.7274 0.0000 3,036.207 8 8 4

Maximum 5.0325 23.0009 19.8175 0.0308 0.8349 1.3814 1.7178 0.4356 1.2867 1.3768 0.0000 3,018.022 3,018.022 0.7274 0.0000 3,036.207 8 8 4

Mitigated Construction

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Year lb/day lb/day

2018 5.0325 23.0009 19.8175 0.0308 0.3923 1.3814 1.6034 0.2010 1.2867 1.3488 0.0000 3,018.022 3,018.022 0.7274 0.0000 3,036.207 8 8 4

Maximum 5.0325 23.0009 19.8175 0.0308 0.3923 1.3814 1.6034 0.2010 1.2867 1.3488 0.0000 3,018.022 3,018.022 0.7274 0.0000 3,036.207 8 8 4

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio-CO2 Total CO2 CH4 N20 CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Percent 0.00 0.00 0.00 0.00 53.01 0.00 6.66 53.86 0.00 2.04 0.00 0.00 0.00 0.00 0.00 0.00 Reduction CalEEMod Version: CalEEMod.2016.3.2 Page 4 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

2.2 Overall Operational Unmitigated Operational

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Area 0.2690 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 005 003 005 005 005 005 005

Energy 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 003 004 003 003 003 003 004 004

Mobile 1.9898 15.6399 20.5093 0.0462 2.1702 0.0682 2.2384 0.5824 0.0646 0.6470 4,708.112 4,708.112 0.5095 4,720.849 4 4 6

Total 2.2607 15.6576 20.5300 0.0463 2.1702 0.0696 2.2397 0.5824 0.0660 0.6484 4,729.272 4,729.272 0.5099 3.9000e- 4,742.136 6 6 004 3

Mitigated Operational

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Area 0.2690 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 005 003 005 005 005 005 005

Energy 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 003 004 003 003 003 003 004 004

Mobile 1.9898 15.6399 20.5093 0.0462 2.1702 0.0682 2.2384 0.5824 0.0646 0.6470 4,708.112 4,708.112 0.5095 4,720.849 4 4 6

Total 2.2607 15.6576 20.5300 0.0463 2.1702 0.0696 2.2397 0.5824 0.0660 0.6484 4,729.272 4,729.272 0.5099 3.9000e- 4,742.136 6 6 004 3 CalEEMod Version: CalEEMod.2016.3.2 Page 5 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio-CO2 Total CO2 CH4 N20 CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Percent 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Reduction

3.0 Construction Detail

Construction Phase

Phase Phase Name Phase Type Start Date End Date Num Days Num Days Phase Description Number Week

1 Site Preparation Site Preparation 5/15/2018 5/15/2018 5 1

2 Grading Grading 5/16/2018 5/17/2018 5 2

3 Building Construction Building Construction 5/18/2018 10/4/2018 5 100

4 Paving Paving 5/18/2018 10/4/2018 5 100

5 Architectural Coating Architectural Coating 5/18/2018 10/4/2018 5 100

Acres of Grading (Site Preparation Phase): 0.5

Acres of Grading (Grading Phase): 0

Acres of Paving: 0.59

Residential Indoor: 0; Residential Outdoor: 0; Non-Residential Indoor: 13,650; Non-Residential Outdoor: 4,550; Striped Parking Area: 1,749 (Architectural Coating – sqft)

OffRoad Equipment CalEEMod Version: CalEEMod.2016.3.2 Page 6 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

Phase Name Offroad Equipment Type Amount Usage Hours Horse Power Load Factor

Architectural Coating Air Compressors 1 6.00 78 0.48

Paving Cement and Mortar Mixers 4 6.00 9 0.56

Grading Concrete/Industrial Saws 1 8.00 81 0.73

Building Construction Cranes 1 4.00 231 0.29

Building Construction Forklifts 2 6.00 89 0.20

Site Preparation Graders 1 8.00 187 0.41

Paving Pavers 1 7.00 130 0.42

Paving Rollers 1 7.00 80 0.38

Grading Rubber Tired Dozers 1 1.00 247 0.40

Building Construction Tractors/Loaders/Backhoes 2 8.00 97 0.37

Grading Tractors/Loaders/Backhoes 2 6.00 97 0.37

Paving Tractors/Loaders/Backhoes 1 7.00 97 0.37

Site Preparation Tractors/Loaders/Backhoes 1 8.00 97 0.37

Trips and VMT

Phase Name Offroad Equipment Worker Trip Vendor Trip Hauling Trip Worker Trip Vendor Trip Hauling Trip Worker Vehicle Vendor Hauling Count Number Number Number Length Length Length Class Vehicle Class Vehicle Class

Site Preparation 2 5.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

Grading 4 10.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

Building Construction 5 15.00 6.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

Paving 7 18.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

Architectural Coating 1 3.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

3.1 Mitigation Measures Construction CalEEMod Version: CalEEMod.2016.3.2 Page 7 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

Water Exposed Area Reduce Vehicle Speed on Unpaved Roads Clean Paved Roads

3.2 Site Preparation - 2018 Unmitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Fugitive Dust 0.5303 0.0000 0.5303 0.0573 0.0000 0.0573 0.0000 0.0000

Off-Road 0.7858 9.7572 4.2514 9.7600e- 0.4180 0.4180 0.3846 0.3846 982.7113 982.7113 0.3059 990.3596 003

Total 0.7858 9.7572 4.2514 9.7600e- 0.5303 0.4180 0.9483 0.0573 0.3846 0.4418 982.7113 982.7113 0.3059 990.3596 003 CalEEMod Version: CalEEMod.2016.3.2 Page 8 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

3.2 Site Preparation - 2018 Unmitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.0487 0.0433 0.3590 4.6000e- 0.0411 4.5000e- 0.0415 0.0109 4.1000e- 0.0113 45.4560 45.4560 3.4100e- 45.5412 004 004 004 003

Total 0.0487 0.0433 0.3590 4.6000e- 0.0411 4.5000e- 0.0415 0.0109 4.1000e- 0.0113 45.4560 45.4560 3.4100e- 45.5412 004 004 004 003

Mitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Fugitive Dust 0.2386 0.0000 0.2386 0.0258 0.0000 0.0258 0.0000 0.0000

Off-Road 0.7858 9.7572 4.2514 9.7600e- 0.4180 0.4180 0.3846 0.3846 0.0000 982.7113 982.7113 0.3059 990.3596 003

Total 0.7858 9.7572 4.2514 9.7600e- 0.2386 0.4180 0.6566 0.0258 0.3846 0.4103 0.0000 982.7113 982.7113 0.3059 990.3596 003 CalEEMod Version: CalEEMod.2016.3.2 Page 9 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

3.2 Site Preparation - 2018 Mitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.0487 0.0433 0.3590 4.6000e- 0.0268 4.5000e- 0.0272 7.3900e- 4.1000e- 7.8000e- 45.4560 45.4560 3.4100e- 45.5412 004 004 003 004 003 003

Total 0.0487 0.0433 0.3590 4.6000e- 0.0268 4.5000e- 0.0272 7.3900e- 4.1000e- 7.8000e- 45.4560 45.4560 3.4100e- 45.5412 004 004 003 004 003 003

3.3 Grading - 2018 Unmitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Fugitive Dust 0.7528 0.0000 0.7528 0.4138 0.0000 0.4138 0.0000 0.0000

Off-Road 1.0643 9.4295 7.7762 0.0120 0.6228 0.6228 0.5943 0.5943 1,169.350 1,169.350 0.2254 1,174.985 2 2 7

Total 1.0643 9.4295 7.7762 0.0120 0.7528 0.6228 1.3755 0.4138 0.5943 1.0081 1,169.350 1,169.350 0.2254 1,174.985 2 2 7 CalEEMod Version: CalEEMod.2016.3.2 Page 10 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

3.3 Grading - 2018 Unmitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.0974 0.0866 0.7181 9.2000e- 0.0822 8.9000e- 0.0830 0.0218 8.2000e- 0.0226 90.9119 90.9119 6.8200e- 91.0824 004 004 004 003

Total 0.0974 0.0866 0.7181 9.2000e- 0.0822 8.9000e- 0.0830 0.0218 8.2000e- 0.0226 90.9119 90.9119 6.8200e- 91.0824 004 004 004 003

Mitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Fugitive Dust 0.3387 0.0000 0.3387 0.1862 0.0000 0.1862 0.0000 0.0000

Off-Road 1.0643 9.4295 7.7762 0.0120 0.6228 0.6228 0.5943 0.5943 0.0000 1,169.350 1,169.350 0.2254 1,174.985 2 2 7

Total 1.0643 9.4295 7.7762 0.0120 0.3387 0.6228 0.9615 0.1862 0.5943 0.7805 0.0000 1,169.350 1,169.350 0.2254 1,174.985 2 2 7 CalEEMod Version: CalEEMod.2016.3.2 Page 11 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

3.3 Grading - 2018 Mitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.0974 0.0866 0.7181 9.2000e- 0.0536 8.9000e- 0.0545 0.0148 8.2000e- 0.0156 90.9119 90.9119 6.8200e- 91.0824 004 004 004 003

Total 0.0974 0.0866 0.7181 9.2000e- 0.0536 8.9000e- 0.0545 0.0148 8.2000e- 0.0156 90.9119 90.9119 6.8200e- 91.0824 004 004 004 003

3.4 Building Construction - 2018 Unmitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Off-Road 1.0848 11.0316 7.7512 0.0114 0.7087 0.7087 0.6520 0.6520 1,146.532 1,146.532 0.3569 1,155.455 3 3 5

Total 1.0848 11.0316 7.7512 0.0114 0.7087 0.7087 0.6520 0.6520 1,146.532 1,146.532 0.3569 1,155.455 3 3 5 CalEEMod Version: CalEEMod.2016.3.2 Page 12 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

3.4 Building Construction - 2018 Unmitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0582 0.9070 0.4030 1.8500e- 0.0407 8.0300e- 0.0487 0.0117 7.6800e- 0.0194 192.6219 192.6219 0.0175 193.0584 003 003 003

Worker 0.1461 0.1299 1.0771 1.3800e- 0.1232 1.3400e- 0.1246 0.0327 1.2300e- 0.0339 136.3678 136.3678 0.0102 136.6235 003 003 003

Total 0.2043 1.0369 1.4801 3.2300e- 0.1639 9.3700e- 0.1733 0.0444 8.9100e- 0.0533 328.9898 328.9898 0.0277 329.6819 003 003 003

Mitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Off-Road 1.0848 11.0316 7.7512 0.0114 0.7087 0.7087 0.6520 0.6520 0.0000 1,146.532 1,146.532 0.3569 1,155.455 3 3 5

Total 1.0848 11.0316 7.7512 0.0114 0.7087 0.7087 0.6520 0.6520 0.0000 1,146.532 1,146.532 0.3569 1,155.455 3 3 5 CalEEMod Version: CalEEMod.2016.3.2 Page 13 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

3.4 Building Construction - 2018 Mitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0582 0.9070 0.4030 1.8500e- 0.0291 8.0300e- 0.0371 8.8700e- 7.6800e- 0.0166 192.6219 192.6219 0.0175 193.0584 003 003 003 003

Worker 0.1461 0.1299 1.0771 1.3800e- 0.0804 1.3400e- 0.0817 0.0222 1.2300e- 0.0234 136.3678 136.3678 0.0102 136.6235 003 003 003

Total 0.2043 1.0369 1.4801 3.2300e- 0.1095 9.3700e- 0.1189 0.0310 8.9100e- 0.0400 328.9898 328.9898 0.0277 329.6819 003 003 003

3.5 Paving - 2018 Unmitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Off-Road 0.9202 8.7447 7.2240 0.0113 0.5109 0.5109 0.4735 0.4735 1,070.137 1,070.137 0.3017 1,077.679 2 2 8

Paving 8.3800e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 003

Total 0.9286 8.7447 7.2240 0.0113 0.5109 0.5109 0.4735 0.4735 1,070.137 1,070.137 0.3017 1,077.679 2 2 8 CalEEMod Version: CalEEMod.2016.3.2 Page 14 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

3.5 Paving - 2018 Unmitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.1754 0.1559 1.2925 1.6600e- 0.1479 1.6100e- 0.1495 0.0392 1.4800e- 0.0407 163.6414 163.6414 0.0123 163.9482 003 003 003

Total 0.1754 0.1559 1.2925 1.6600e- 0.1479 1.6100e- 0.1495 0.0392 1.4800e- 0.0407 163.6414 163.6414 0.0123 163.9482 003 003 003

Mitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Off-Road 0.9202 8.7447 7.2240 0.0113 0.5109 0.5109 0.4735 0.4735 0.0000 1,070.137 1,070.137 0.3017 1,077.679 2 2 8

Paving 8.3800e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 003

Total 0.9286 8.7447 7.2240 0.0113 0.5109 0.5109 0.4735 0.4735 0.0000 1,070.137 1,070.137 0.3017 1,077.679 2 2 8 CalEEMod Version: CalEEMod.2016.3.2 Page 15 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

3.5 Paving - 2018 Mitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.1754 0.1559 1.2925 1.6600e- 0.0965 1.6100e- 0.0981 0.0266 1.4800e- 0.0281 163.6414 163.6414 0.0123 163.9482 003 003 003

Total 0.1754 0.1559 1.2925 1.6600e- 0.0965 1.6100e- 0.0981 0.0266 1.4800e- 0.0281 163.6414 163.6414 0.0123 163.9482 003 003 003

3.6 Architectural Coating - 2018 Unmitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Archit. Coating 2.3116 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Off-Road 0.2986 2.0058 1.8542 2.9700e- 0.1506 0.1506 0.1506 0.1506 281.4485 281.4485 0.0267 282.1171 003

Total 2.6102 2.0058 1.8542 2.9700e- 0.1506 0.1506 0.1506 0.1506 281.4485 281.4485 0.0267 282.1171 003 CalEEMod Version: CalEEMod.2016.3.2 Page 16 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

3.6 Architectural Coating - 2018 Unmitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.0292 0.0260 0.2154 2.8000e- 0.0246 2.7000e- 0.0249 6.5400e- 2.5000e- 6.7800e- 27.2736 27.2736 2.0500e- 27.3247 004 004 003 004 003 003

Total 0.0292 0.0260 0.2154 2.8000e- 0.0246 2.7000e- 0.0249 6.5400e- 2.5000e- 6.7800e- 27.2736 27.2736 2.0500e- 27.3247 004 004 003 004 003 003

Mitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Archit. Coating 2.3116 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Off-Road 0.2986 2.0058 1.8542 2.9700e- 0.1506 0.1506 0.1506 0.1506 0.0000 281.4485 281.4485 0.0267 282.1171 003

Total 2.6102 2.0058 1.8542 2.9700e- 0.1506 0.1506 0.1506 0.1506 0.0000 281.4485 281.4485 0.0267 282.1171 003 CalEEMod Version: CalEEMod.2016.3.2 Page 17 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

3.6 Architectural Coating - 2018 Mitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 0.0292 0.0260 0.2154 2.8000e- 0.0161 2.7000e- 0.0163 4.4300e- 2.5000e- 4.6800e- 27.2736 27.2736 2.0500e- 27.3247 004 004 003 004 003 003

Total 0.0292 0.0260 0.2154 2.8000e- 0.0161 2.7000e- 0.0163 4.4300e- 2.5000e- 4.6800e- 27.2736 27.2736 2.0500e- 27.3247 004 004 003 004 003 003

4.0 Operational Detail - Mobile

4.1 Mitigation Measures Mobile CalEEMod Version: CalEEMod.2016.3.2 Page 18 of 23 Date: 2/8/2018 10:16 AM

Dollar General - Siskiyou County, Winter

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Mitigated 1.9898 15.6399 20.5093 0.0462 2.1702 0.0682 2.2384 0.5824 0.0646 0.6470 4,708.112 4,708.112 0.5095 4,720.849 4 4 6

Unmitigated 1.9898 15.6399 20.5093 0.0462 2.1702 0.0682 2.2384 0.5824 0.0646 0.6470 4,708.112 4,708.112 0.5095 4,720.849 4 4 6

4.2 Trip Summary Information

Average Daily Trip Rate Unmitigated Mitigated Land Use Weekday Saturday Sunday Annual VMT Annual VMT

Free-Standing Discount Store 520.88 646.74 512.88 838,445 838,445 Other Non-Asphalt Surfaces 0.00 0.00 0.00 Parking Lot 0.00 0.00 0.00 Total 520.88 646.74 512.88 838,445 838,445

4.3 Trip Type Information

Miles Trip % Trip Purpose %

Land Use H-W or C-W H-S or C-C H-O or C-NW H-W or C-W H-S or C-C H-O or C-NW Primary Diverted Pass-by Free-Standing Discount Store 9.50 7.30 7.30 12.20 68.80 19.00 47.5 35.5 17 Other Non-Asphalt Surfaces 9.50 7.30 7.30 0.00 0.00 0.00 0 0 0 Parking Lot 9.50 7.30 7.30 0.00 0.00 0.00 0 0 0

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Land Use LDA LDT1 LDT2 MDV LHD1 LHD2 MHD HHD OBUS UBUS MCY SBUS MH Free-Standing Discount Store 0.472396 0.042813 0.180241 0.124142 0.040823 0.007259 0.008637 0.112950 0.001295 0.001737 0.005316 0.001033 0.001359

Other Non-Asphalt Surfaces 0.472396 0.042813 0.180241 0.124142 0.040823 0.007259 0.008637 0.112950 0.001295 0.001737 0.005316 0.001033 0.001359

Parking Lot 0.472396 0.042813 0.180241 0.124142 0.040823 0.007259 0.008637 0.112950 0.001295 0.001737 0.005316 0.001033 0.001359

5.0 Energy Detail

Historical Energy Use: N

5.1 Mitigation Measures Energy

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

NaturalGas 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 Mitigated 003 004 003 003 003 003 004 004

NaturalGas 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 Unmitigated 003 004 003 003 003 003 004 004 CalEEMod Version: CalEEMod.2016.3.2 Page 20 of 23 Date: 2/8/2018 10:16 AM

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5.2 Energy by Land Use - NaturalGas Unmitigated

NaturalGa ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e s Use PM10 PM10 Total PM2.5 PM2.5 Total

Land Use kBTU/yr lb/day lb/day

Free-Standing 179.756 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 Discount Store 003 004 003 003 003 003 004 004

Other Non- 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Asphalt Surfaces

Parking Lot 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 003 004 003 003 003 003 004 004

Mitigated

NaturalGa ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e s Use PM10 PM10 Total PM2.5 PM2.5 Total

Land Use kBTU/yr lb/day lb/day

Free-Standing 0.179756 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 Discount Store 003 004 003 003 003 003 004 004

Other Non- 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Asphalt Surfaces

Parking Lot 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 1.9400e- 0.0176 0.0148 1.1000e- 1.3400e- 1.3400e- 1.3400e- 1.3400e- 21.1478 21.1478 4.1000e- 3.9000e- 21.2735 003 004 003 003 003 003 004 004

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6.1 Mitigation Measures Area

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category lb/day lb/day

Mitigated 0.2690 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 005 003 005 005 005 005 005

Unmitigated 0.2690 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 005 003 005 005 005 005 005

6.2 Area by SubCategory Unmitigated

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

SubCategory lb/day lb/day

Architectural 0.0633 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Coating

Consumer 0.2051 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Products

Landscaping 5.5000e- 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 004 005 003 005 005 005 005 005

Total 0.2690 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 005 003 005 005 005 005 005 CalEEMod Version: CalEEMod.2016.3.2 Page 22 of 23 Date: 2/8/2018 10:16 AM

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6.2 Area by SubCategory Mitigated

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

SubCategory lb/day lb/day

Architectural 0.0633 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Coating

Consumer 0.2051 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Products

Landscaping 5.5000e- 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 004 005 003 005 005 005 005 005

Total 0.2690 5.0000e- 5.8400e- 0.0000 2.0000e- 2.0000e- 2.0000e- 2.0000e- 0.0124 0.0124 3.0000e- 0.0132 005 003 005 005 005 005 005

7.0 Water Detail

7.1 Mitigation Measures Water

8.0 Waste Detail

8.1 Mitigation Measures Waste

9.0 Operational Offroad

Equipment Type Number Hours/Day Days/Year Horse Power Load Factor Fuel Type

10.0 Stationary Equipment

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Equipment Type Number Hours/Day Hours/Year Horse Power Load Factor Fuel Type

Boilers

Equipment Type Number Heat Input/Day Heat Input/Year Boiler Rating Fuel Type

User Defined Equipment

Equipment Type Number

11.0 Vegetation Draft Initial Study and Mitigated Negative Declaration Dollar General Retail Store

APPENDIX B

Biological Resources Assessment

Biological Resources Assessment

Yreka Dollar General Retail Store Project

Siskiyou County, California

Prepared For:

City of Yreka

March 2018 Biological Resources Assessment for the Yreka Dollar General Store Project

CONTENTS

1.0 INTRODUCTION ...... 1 1.1 Project Location ...... 1 1.2 Purpose of this Biological Resources Assessment ...... 1 2.0 REGULATORY SETTING ...... 3 2.1 Federal Regulations ...... 3 2.1.1 Federal Endangered Species Act ...... 3 2.1.2 Migratory Bird Treaty Act ...... 4 2.1.3 Federal Clean Water Act ...... 5 2.2 State or Local Regulations ...... 5 2.2.1 California Fish and Game Code ...... 5 2.2.2 Species of Special Concern ...... 6 2.2.3 California Rare Plant Ranks ...... 7 2.2.4 Porter-Cologne Water Quality Act ...... 8 2.2.5 California Environmental Quality Act...... 8 3.0 METHODS ...... 9 3.1 Literature Review ...... 9 3.2 Special-Status Species Considered for the Project ...... 9 4.0 RESULTS ...... 10 4.1 Site Characteristics and Surrounding Land Use ...... 10 4.2 Vegetation Communities ...... 10 4.2.1 Ruderal Annual Grassland ...... 10 4.2.2 Disturbed Riparian Woodland ...... 11 4.3 Soils ...... 11 4.4 Potential Waters of the U.S...... 11 4.5 Evaluation of Species Identified in the Literature Search ...... 11 4.5.1 Plants ...... 23 4.5.2 Invertebrates ...... 24 4.5.3 Fish ...... 24 4.5.4 Amphibians ...... 25 4.5.5 Reptiles ...... 25 4.5.6 Birds ...... 25 4.5.7 Mammals ...... 25 4.5.8 Wildlife Movement/Corridors ...... 26 5.0 Recommendations ...... 26

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5.1 Federal Permits and Authorization ...... 26 5.1.1 USACE ...... 26 5.2 State Permits and Authorizations ...... 26 5.2.1 RWCQB ...... 26 5.2.2 CDFW ...... 26 5.3 Special-Status Plant Species ...... 27 5.4 Northern Western Pond Turtle ...... 27 5.5 MBTA-Protected Birds ...... 27 6.0 REFERENCES ...... 29

LIST OF TABLES

Table 1. Potentially Occurring Special-Status Species ...... 13

LIST OF TABLES

Figure 1. Project Location and Vicinity...... 2 Figure 2. Natural Resources Conservation Service Soil Types ...... 12

LIST OF ATTACHMENTS

Attachment A – Montague Road Site - Wetland Screening Results

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1.0 INTRODUCTION

At the request of City of Yreka, ECORP Consulting, Inc. (ECORP) has conducted a biological resources assessment for the proposed Yreka Dollar General Retail Store Project (Project) located in Siskiyou County, California. The purpose of the assessment is to collect information on the biological resources present within the Project site, and to determine any potential biological constraints to Project activities.

The Project includes construction of a new Dollar General Retail Store on a rectangular parcel. In addition to the building structure, there will be onsite parking and landscaping.

1.1 Project Location

The 0.925-acre Project site is located approximately 220 feet east of the intersection of Montague Road and North Main Street in Yreka, Siskiyou County, California. The Project site corresponds to a portion of Section 23, Township 45 North, and Range 07 West (Mount Diablo Base Meridian) of the “Yreka”, California” 7.5-minute quadrangle (U.S. Geological Survey [USGS] 1981 rev.1984) (Figure 1. Project Location and Vicinity). The approximate center of the Project site is located at 41.740843˚ North and 122.632115˚ West within the Shasta Watershed (Hydrologic Unit Code #18010207, Natural Resources Conservation Service [NRCS], USGS, and Environmental Protection Agency [EPA] 2017). The Project site is at approximately 2,585 feet above mean sea level.

1.2 Purpose of this Biological Resources Assessment

The purpose of this biological resources assessment is to assess the potential for occurrence of special- status plant and animal species or their habitat, and sensitive habitats such as wetlands within the Project site. This assessment does not include determinate field surveys conducted according to agency- promulgated protocols. The conclusions and recommendations presented in this report are based upon a review of the available literature and site reconnaissance.

For the purposes of this assessment, special-status species are defined as plants or animals that meet the following criteria:

 Are listed, proposed for listing, or candidates for future listing as threatened or endangered under the federal Endangered Species Act (ESA);

 Are listed or candidates for future listing as threatened or endangered under the California ESA;

 Meet the definitions of endangered or rare under Section 15380 of the California Environmental Quality Act (CEQA) Guidelines;

 Are identified as a species of special concern by the California Department of Fish and Wildlife (CDFW);

 Are birds identified as birds of conservation concern by the U.S. Fish and Wildlife Service (USFWS) (USFWS 2008);

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­

PROJECT

(AMM)-amyers 2/28/2018

Approximate Project Area

Siskiyou County, California §23, T.45N, R.07W, MDBM Latitude: 41.740843° N Longitude: -122.632115° W Watershed: Shasta (18010207) I Scale in Feet 0 1,000 2,000

Yreka (1981 rev.1984) (NAD27) CA 7.5-minute Topographic Quadrangle US Geological Survey Location: N:\2018\2018-017 Yreka Dollar General Retail Store\MAPS\Location_Vicinity\YDG_LnV_20180228.mxd Map Date: 2/28/2018 iService Layer Credits: Copyright:© 2013 National Geographic Society, i-cubed Content may not reflect National Geographic's current map policy. Sources: National Geographic, Esri, DeLorme, HERE, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, increment P Corp. Figure 1. Project Location and Vicinity 2018-017 Yreka Dollar General Retail Store Biological Resources Assessment for the Yreka Dollar General Store Project

 Are plants considered by the California Native Plant Society (CNPS) to be "rare, threatened, or endangered in California" (California Rare Plant Rank [CRPR] 1 and 2);

 Are plants listed by CNPS as species about which more information is needed to determine their status (CRPR 3), and plants of limited distribution (CRPR 4);

 Are plants listed as rare under the California Native Plant Protection Act (Fish and Game Code of California, Section 1900 et seq.); or

 Are fully protected in California in accordance with the California Fish and Game Code, Sections 3511 (birds), 4700 (mammals), 5050 (amphibians and reptiles), and 5515 (fishes).

While other species are sometimes found in database searches or within the literature, these were not included within this analysis.

2.0 REGULATORY SETTING

This section summarized all regulations related to biological resources that may be relevant to the Project.

2.1 Federal Regulations

2.1.1 Federal Endangered Species Act

The ESA protects plants and animals that are listed as endangered or threatened by USFWS and the National Marine Fisheries Service (NMFS). Section 9 of ESA prohibits the taking of listed wildlife, where take is defined as “harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, collect, or attempt to engage in such conduct” (50 Code of Federal Regulations [CFR] 17.3). For plants, this statute governs removing, possessing, maliciously damaging, or destroying any listed plant on federal land and removing, cutting, digging up, damaging, or destroying any listed plant on non-federal land in knowing violation of state law (16 U.S Code 1538). Under Section 7 of ESA, federal agencies are required to consult with USFWS if their actions, including permit approvals or funding, could adversely affect a listed (or proposed) species (including plants) or its critical habitat. Through consultation and the issuance of a biological opinion (BO), the USFWS may issue an incidental take statement allowing take of the species that is incidental to an otherwise authorized activity provided the activity will not jeopardize the continued existence of the species. Section 10 of ESA provides for issuance of incidental take permits where no other federal actions are necessary provided a habitat conservation plan (HCP) is developed.

Section 7

Section 7 of ESA mandates that all federal agencies consult with USFWS and/or NMFS to ensure that federal agencies’ actions do not jeopardize the continued existence of a listed species or adversely modify critical habitat for listed species. If direct and/or indirect effects will occur to critical habitat that appreciably diminish the value of critical habitat for both the survival and recovery of a species, the adverse modifications will require formal consultation with USFWS or NMFS. If adverse effects are likely, the applicant must conduct a biological assessment (BA) for the purpose of analyzing the potential effects of the project on listed species and critical habitat to establish and justify an "effect determination." The federal agency reviews the BA; if it concludes that the project may adversely affect a listed species or its

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habitat, it prepares a BO. The BO may recommend "reasonable and prudent alternatives" to the project to avoid jeopardizing or adversely modifying habitat.

Critical Habitat and Essential Habitat

Critical habitat is defined in Section 3 of the ESA as (1) the specific areas within the geographical area occupied by a species, at the time it is listed in accordance with the ESA, on which are found those physical or biological features essential to the conservation of the species and that may require special management considerations or protection; and (2) specific areas outside the geographical area occupied by a species at the time it is listed, upon a determination that such areas are essential for the conservation of the species. For inclusion in a critical habitat designation, habitat within the geographical area occupied by the species at the time it was listed must first have features that are essential to the conservation of the species. Critical habitat designations identify, to the extent known and using the best scientific data available, habitat areas that provide essential life cycle needs of the species (areas on which are found the primary constituent elements). Primary constituent elements are the physical and biological features that are essential to the conservation of the species and that may require special management considerations or protection. These include but are not limited to the following:

 Space for individual and population growth and for normal behavior

 Food, water, air, light, minerals, or other nutritional or physiological requirements

 Cover or shelter

 Sites for breeding, reproduction, or rearing (or development) of offspring

 Habitats that are protected from disturbance or are representative of the historic, geographical, and ecological distributions of a species

Excluded essential habitat is defined as areas that were found to be essential habitat for the survival of a species and assumed to contain at least one of the primary constituent elements for the species but were excluded from the critical habitat designation. The USFWS has stated that any action within the excluded essential habitat that triggers a federal nexus will be required to undergo the Section 7(a)(1) process, and the species covered under the specific critical habitat designation would be afforded protection under Section 7(a)(2) of ESA.

2.1.2 Migratory Bird Treaty Act

The Migratory Bird Treaty Act (MBTA) implements international treaties between the United States and other nations devised to protect migratory birds, any of their parts, eggs, and nests from activities such as hunting, pursuing, capturing, killing, selling, and shipping, unless expressly authorized in the regulations or by permit. As authorized by the MBTA, the USFWS issues permits to qualified applicants for the following types of activities: falconry, raptor propagation, scientific collecting, special purposes (rehabilitation, education, migratory game bird propagation, and salvage), take of depredating birds, taxidermy, and waterfowl sale and disposal. The regulations governing migratory bird permits can be found in 50 CFR part 13 General Permit Procedures and 50 CFR part 21 Migratory Bird Permits. The State

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of California has incorporated the protection of birds of prey in Sections 3800, 3513, and 3503.5 of the California Fish and Game Code.

2.1.3 Federal Clean Water Act

The federal Clean Water Act’s (CWA) purpose is to “restore and maintain the chemical, physical, and biological integrity of the nation’s waters.” Section 404 of the CWA prohibits the discharge of dredged or fill material into “Waters of the United States” without a permit from the U.S. Army Corps of Engineers (USACE). The definition of Waters of the U.S. includes rivers, streams, estuaries, the territorial seas, ponds, lakes, and wetlands. Wetlands are defined as those areas “that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions” (33 CFR 328.3 7b). The EPA also has authority over wetlands and may override a USACE permit.

Substantial impacts to wetlands may require an individual permit. Projects that only minimally affect wetlands may meet the conditions of one of the existing Nationwide Permits. A Water Quality Certification or waiver pursuant to Section 401 of the CWA is required for Section 404 permit actions; this certification or waiver is issued by the Regional Water Quality Control Board (RWQCB).

2.2 State or Local Regulations

2.2.1 California Fish and Game Code

California Endangered Species Act

The California ESA (Fish and Game Code §§ 2050-2116) generally parallels the main provisions of ESA, but unlike its federal counterpart, the California ESA applies the take prohibitions to species proposed for listing (called “candidates” by the state). Section 2080 of the California Fish and Game Code prohibits the taking, possession, purchase, sale, and import or export of endangered, threatened, or candidate species, unless otherwise authorized by permit or in the regulations. Take is defined in Section 86 of the California Fish and Game Code as “hunt, pursue, catch, capture, or kill, or attempt to hunt, pursue, catch, capture, or kill.” The California ESA allows for take incidental to otherwise lawful development projects. State lead agencies are required to consult with the CDFW to ensure that any action they undertake is not likely to jeopardize the continued existence of any endangered, threatened or candidate species or result in destruction or adverse modification of essential habitat.

Fully Protected Species

The state of California first began to designate species as “fully protected” prior to the creation of the federal and state ESAs. Lists of fully protected species were initially developed to provide protection to those animals that were rare or faced possible extinction and included fish, amphibians and reptiles, birds, and mammals. Most fully protected species have since been listed as threatened or endangered under the federal and/or California ESAs. The regulations that implement the Fully Protected Species Statute (California Fish and Game Code Section 4700 for mammals, Section 3511 for birds, Section 5050 for reptiles and amphibians, and Section 5515 for fish) provide that fully protected species may not be taken or possessed at any time. Furthermore, CDFW prohibits any state agency from issuing incidental take

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permits for fully protected species. CDFW will issue licenses or permits for take of these species for necessary scientific research or live capture and relocation pursuant to the permit.

Native Plant Protection Act

The Native Plant Protection Act (NPPA) of 1977 was created with the intent to “preserve, protect and enhance rare and endangered plants in this State.” The NPPA is administered by CDFW and provided in California Fish and Game Code Sections 1900-1913. The California Fish and Wildlife Commission has the authority to designate native plants as “endangered” or “rare” and to protect endangered and rare plants from take. The California ESA of 1984 (California Fish and Game Code §§2050-2116) provided further protection for rare and endangered plant species, but the NPPA remains part of the California Fish and Game Code.

Birds of Prey

Sections 3800, 3513, and 3503 of the California Fish and Game Code specifically protect birds of prey. Section 3800 states that it is unlawful to take nongame birds, such as those occurring naturally in California that are not resident game birds, migratory game birds, or fully protected birds, except when in accordance with regulations of the commission or a mitigation plan approved by CDFW for mining operations. Section 3513 specifically prohibits the take or possession of any migratory nongame bird as designated in the MBTA.

Section 3503 of the California Fish and Game Code prohibits the take, possession, or needless destruction of the nest or eggs of any bird. Additionally, Subsection 3503.5 prohibits the take, possession, or destruction of any birds and their nests in the orders Strigiformes (owls) or Falconiformes (hawks and eagles). These provisions, along with the federal MBTA, serve to protect nesting raptors.

2.2.2 Species of Special Concern

Species of Special Concern (SSC) are defined by CDFW as a species, subspecies, or distinct population of an animal native to California that are not legally protected under the federal or California ESAs or the California Fish and Game Code, but currently satisfies one or more of the following criteria:

 The species has been completely extirpated from the state or, as in the case of birds, it has been extirpated from its primary seasonal or breeding role.

 The species is listed as federally (but not state) threatened or endangered, or meets the state definition of threatened or endangered but has not formally been listed.

 The species has or is experiencing serious (noncyclical) population declines or range retractions (not reversed) that, if continued or resumed, could qualify it for state threatened or endangered status.

 The species has naturally small populations that exhibit high susceptibility to risk from any factor that if realized, could lead to declines that would qualify it for state threatened or endangered status.

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SSC are typically associated with habitats that are threatened. Project-related impacts to SSC, state- threatened, or endangered species are considered “significant” under CEQA.

2.2.3 California Rare Plant Ranks

The CNPS maintains the Inventory of Rare and Endangered Plants of California (CNPS 2017), which provides a list of plant species native to California that are threatened with extinction, have limited distributions, and/or low populations. Plant species meeting one of these criteria are assigned to one of six CRPRs. The rank system was developed in collaboration with government, academia, non- governmental organizations, and private sector botanists, and is jointly managed by CDFW and the CNPS. The CRPRs are currently recognized in the California Natural Diversity Database (CNDDB). The following are definitions of the CNPS CRPRs:

 Rare Plant Rank 1A – presumed extirpated in California and either rare or extinct elsewhere

 Rare Plant Rank 1B – rare, threatened, or endangered in California and elsewhere

 Rare Plant Rank 2A – presumed extirpated in California, but more common elsewhere

 Rare Plant Rank 2B – rare, threatened, or endangered in California but more common elsewhere

 Rare Plant Rank 3 – a review list of plants about which more information is needed

 Rare Plant Rank 4 – a watch list of plants of limited distribution

Additionally, the CNPS has defined Threat Ranks that are added to the CRPR as an extension. Threat Ranks designate the level of threat on a scale of 1 through 3, with 1 being the most threatened and 3 being the least threatened. Threat Ranks are generally present for all plants ranked 1B, 2B, or 4, and for the majority of plants ranked 3. Plant species ranked 1A and 2A (presumed extirpated in California), and some species ranked 3, which lack threat information, do not typically have a Threat Rank extension. The following are definitions of the CNPS Threat Ranks:

 Threat Rank 0.1 – Seriously threatened in California (over 80 percent of occurrences threatened / high degree and immediacy of threat)

 Threat Rank 0.2 – Moderately threatened in California (20-80 percent occurrences threatened / moderate degree and immediacy of threat)

 Threat Rank 0.3 – Not very threatened in California (<20 percent of occurrences threatened / low degree and immediacy of threat or no current threats known)

Factors, such as habitat vulnerability and specificity, distribution, and condition of occurrences, are considered in setting the Threat Rank; and differences in Threat Ranks do not constitute additional or different protection. Depending on the policy of the lead agency, substantial impacts to plants ranked 1A, 1B, 2, or 3 are typically considered significant under CEQA Guidelines Section 15380. Significance under CEQA is typically evaluated on a case-by-case basis for plants ranked 4.

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2.2.4 Porter-Cologne Water Quality Act

The RWQCB implements water quality regulations under the federal CWA and the Porter-Cologne Water Quality Act. These regulations require compliance with the National Pollutant Discharge Elimination System (NPDES), including compliance with the California Storm Water NPDES General Construction Permit for discharges of storm water runoff associated with construction activities. General Construction Permits for projects that disturb one or more acres of land require development and implementation of a Storm Water Pollution Prevention Plan. Under the Porter-Cologne Water Quality Act, the RWQCB regulates actions that would involve “discharging waste, or proposing to discharge waste, with any region that could affect the water of the state” (Water Code 13260(a)). Waters of the State are defined as “any surface water or groundwater, including saline waters, within the boundaries of the state” (Water Code 13050 (e)). The RWQCB regulates all such activities, as well as dredging, filling, or discharging materials into Waters of the State, that are not regulated by USACE due to a lack of connectivity with a navigable water body. The RWQCB may require issuance of a Waste Discharge Requirements for these activities.

2.2.5 California Environmental Quality Act

In accordance with CEQA Guidelines Section 15380, a species not protected on a federal or state list may be considered rare or endangered if the species meets certain specified criteria. These criteria follow the definitions in ESA, the California ESA, and Sections 1900-1913 of the California Fish and Game Code, which deal with rare or endangered plants or animals. Section 15380 was included in the CEQA Guidelines primarily to deal with situations where a project under review may have a significant effect on a species that has not yet been listed by either USFWS or CDFW.

CEQA Significance Criteria

Sections 15063-15065 of the CEQA Guidelines address how an impact is identified as significant, and are particularly relevant to SSC. Generally, impacts to listed (rare, threatened, or endangered) species are considered significant and require lead agencies to prepare an Environmental Impact Report to thoroughly analyze and evaluate the impacts. Assessment of "impact significance" to populations of non- listed species (e.g., SSC) usually considers the proportion of the species’ range that will be affected by a project, impacts to habitat, and the regional and population level effects.

Specifically, Section 15064.7 of the CEQA Guidelines encourages local agencies to develop and publish the thresholds that the agency uses in determining the significance of environmental effects caused by projects under its review. However, agencies may also rely upon the guidance provided by the expanded Initial Study checklist contained in Appendix G of the CEQA Guidelines. Appendix G provides examples of impacts that would normally be considered significant. Based on these examples, impacts to biological resources would normally be considered significant if the project would:

 have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special-status species in local or regional plans, policies, or regulations, or by CDFW or USFWS;

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 have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations or by CDFW or USFWS;

 have a substantial adverse effect on federally protected Waters of the U.S. including wetlands as defined by Section 404 of the CWA (including, but not limited to, marsh, vernal pool, and coastal) through direct removal, filling, hydrological interruption, or other means;

 interfere substantially with the movement of any native resident or migratory fish or wildlife species, or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites;

 conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance; and

 conflict with the provisions of an adopted HCP, Natural Community Conservation Plan, or other approved local, regional or state habitat conservation plan

An evaluation of whether or not an impact on biological resources would be substantial must consider both the resource itself and how that resource fits into a regional or local context. Substantial impacts would be those that would diminish, or result in the loss of, an important biological resource, or those that would obviously conflict with local, state, or federal resource conservation plans, goals, or regulations. Impacts are sometimes locally important but not significant according to CEQA. The reason for this is that although the impacts would result in an adverse alteration of existing conditions, they would not substantially diminish or result in the permanent loss of an important resource on a population-wide or region-wide basis.

3.0 METHODS

3.1 Literature Review

The following species lists were queried to determine the special-status species that have been documented within or in the vicinity of the site:

 CNDDB for the nine USGS topographic quadrangles centered on the "Yreka, California" 7.5- minute USGS topographic quadrangle (CDFW 2018).

 USFWS Federal Endangered and Threatened Species list for the Project site (USFWS 2018).

 CNPS electronic Inventory of Rare and Endangered Plants of California for the nine USGS topographic quadrangles centered on the “Yreka, California" 7.5-minute USGS topographic quadrangle (CNPS 2018).

3.2 Special-Status Species Considered for the Project

Based on species occurrence information from the literature review, the expert opinions of ECORP biologists, and site conditions described in the wetland screening conducted by ENPLAN Environmental and Geospatial Technologies (Attachment A) in 2017, a list of special-status species that have the

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potential to occur within the Project site was generated. Each of these species’ potential to occur on-site was assessed based on the following criteria:

 Present - Species is known to occur within the Project site based on documented occurrences within the CNDDB or other literature

 Potential to Occur - Habitat (including soils and elevation requirements) for the species occurs within the Project site

 Low Potential to Occur - Marginal or limited amounts of habitat occurs and/or the species is not known to occur within the vicinity of the Project site based on CNDDB records and other available literature

 Absent - No suitable habitat (including soils and elevation requirements) and/or the species is not known to occur within the vicinity of the Project site based on CNDDB records and other literature

4.0 RESULTS

4.1 Site Characteristics and Surrounding Land Use

The Project site is a 0.925 acre rectangular, open lot. The site is dominated by non-native annual plant species. The wetland screening conducted by ENPLAN Environmental and Geospatial Technologies (Attachment A) found that the intermittent stream that exists on the site has been diverted through a culvert, and the upper 15-25 feet of the stream has been filled. Most of the woody riparian vegetation associated with the stream has been removed from the Project site.

The Project site is located in a low-density, industrial-commercial area of northern Yreka, California. East of the Project site is a Super 8 Motel, south and west of the Project site are mixed low-density commercial developments, and to the north is an undeveloped lot.

4.2 Vegetation Communities

There are two vegetation communities that occur within the proposed Project site: ruderal annual grassland and disturbed riparian woodland. The community descriptions below are based on information provided in the wetland screening report (Attachment A)

4.2.1 Ruderal Annual Grassland

The ruderal grassland occurring along Montague Road is represented by yellow starthistle (Centaurea solstitialis), red-stemmed filaree (Erodium cicutarium), rabbitbrush (Ericameria nauseosa), cleavers (Galium aparine), whitlow grass (Draba verna), medusahead grass (Elymus caput-medusae), and bulbous bluegrass (Poa bulbosa). A few box elders (Acer negundo) occur near the southwest corner of the site.

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4.2.2 Disturbed Riparian Woodland

The area within the Project site that was once presumably riparian woodland is now dominated by herbaceous species. Representative species within this disturbed riparian community include few-seeded bittercress (Cardamine oligosperma), curly dock (Rumex crispus), wooly mullein (Verbascum thapsus), and poison hemlock (Conium maculatum). This vegetation prior to the removal of the woody vegetation was likely compositionally similar to the undisturbed vegetation adjacent to the site, which is dominated by red willow (Salix laevigata), box elder, and Himalayan blackberry (Rubus armeniacus). Based on analysis of Google Earth satellite images, approximate 0.22 acre of riparian vegetation was removed.

4.3 Soils

According to the Web Soil Survey (NRCS 2018), one soil unit, or type, has been mapped within the Project site (Figure 2. Natural Resources Conservation Service Soil Types). This is: (145) Dumps. This soil type has hydric components (NRCS 2017).

4.4 Potential Waters of the U.S.

As reported by the ENPLAN wetland screening (Attachment A), the intermittent stream that occurred on the site was redirected through a culvert, and the associated riparian vegetation was removed. This alteration was done without the appropriate permits. It is estimated that approximately 120 linear feet of intermittent stream was impacted when its waters were redirected through the culvert. Approximately 15 to 20 feet of the streambed was filled at the southern end of the riparian area.

4.5 Evaluation of Species Identified in the Literature Search

According to the CNDDB, there are no previously documented occurrences of special-status species within the Project site (CDFW 2018). However, several special-status species occurrences have been documented within an approximate five-mile radius of the Project site. Species that are tracked in the CNDDB that do not have any state or federal status or protection were not included in the evaluation.

Table 1. Potentially Occurring Special-Status Species lists all of the plant and wildlife species identified in the literature search as potentially occurring within the Project site. Included in this table are the listing status for each species, a brief habitat description, and a determination on the potential to occur within the Project site. Following the table is a brief description of each species with potential to occur on-site.

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206 Map Features Approximate Project Area

Mapunit Symbol: Mapunit Name 142:Dotta gravelly loam, 2 to 5 percent slopes 145:Dumps 152:Facey loam, 5 to 15 percent slopes 206:Pit clay 230:Stoner gravelly sandy loam, 2 to 5 percent slopes 231 231:Stoner gravelly sandy loam, 5 to 15 percent slopes

Natural Resources Conservation Service (NRCS) Soil Survey Geographic (gSSURGO) Database for Siskiyou, CA

230

230

(AMM)-amyers 2/28/2018

145

152

231

I 142 Scale in Feet

0 200 Location: N:\2018\2018-017 Yreka Dollar General Retail Store\MAPS\Soils_and_Geology\Soils\YDG_Soils_20180228.mxd Map Date: 2/28/2018 Photo Source: NAIP 2016 Figure 2. Natural Resources Conservation Services Soil Types

2018-017 Yreka Dollar General Retail Store Biological Resources Assessment for the Yreka Dollar General Store Project

Table 1. Potentially Occurring Special-Status Species

Status

Common Name Federal California Approximate Potential To Scientific Name ESA ESA Other Habitat Description Survey Dates Occur On-Site Plants Siskiyou onion - - 4.3 Lower montane forest, (April) May – Absent. No and upper montane June suitable habitat (Allium siskyouense) forest. Rocky soils, present. sometimes serpentinite (2805’ – 8200’). California androsace - - 4.2 Chaparral, cismontane March – June Absent. There woodland, coastal scrub, are no CNDDB (Androsace elongata meadows and seeps, records for this ssp. acuta) pinyon and juniper species within 10 woodland, and valley miles the Project and foothill grassland site. (490’ – 4,281). Oregon rockcress - - 4.3 Chaparral, and lower May Absent. No montane coniferous suitable habitat (Arabis oregana) forest (1965’ – 6005’). present. Wooly balsamroot - - 1B.2 Cismontane woodland. April – June Absent. No Rocky, volcanic soils suitable habitat (Balsamorhiza lanata) (2620’ – 6215’). present. Greene’s mariposa lily - - 1B.2 Cismontane woodland, June – August Absent. No meadows and seeps, suitable habitat (Calochortus greenei) pinyon and juniper present. woodland, and upper montane coniferous forest. Volcanic soils (3395’ – 6200’). Single-flowered - - 1A Meadows and seeps June Absent. No mariposa lily (2440’ – 2625’). suitable habitat present. (Calochortus monanthus) Siskiyou mariposa lily - CR 1B.2 Lower montane conifer June – July Absent. No forest, and north coast suitable habitat (Calochortus coniferous forest. Rocky present. persistens) and acidic soils (3250’ – 6100’). Geyer’s sedge - - 4.2 Great Basin scrub, and May – August Absent. No lower montane suitable habitat (Carex geyeri) coniferous forest present. (3785’ – 7200’). Shasta chaenactis - - 1B.3 Lower montane forest, May – Absent. No and upper montane September suitable habitat (Chaenactis forest. Sandy and present. suffrutescens) serpentine soils (2460’ – 9185’).

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Table 1. Potentially Occurring Special-Status Species

Status

Common Name Federal California Approximate Potential To Scientific Name ESA ESA Other Habitat Description Survey Dates Occur On-Site Ashland thistle - - Cismontane woodland, June – August Absent. There and valley and foothill are no CNDDB (Cirsium ciliolatum) grassland records for this 2B.1 (2620’ – 4595’). species within 10 miles the Project site. Clustered lady’s-slipper - - 4.2 In serpentinite seeps, March – August Absent. No and streambanks of suitable habitat (Cypripedium lower montane present. fasciculatum) coniferous forest, and North Coast coniferous forest (325’ – 7,990’). Mountain lady’s-slipper - - 4.2 Broadleaf upland forest, March – August Absent. No cismontane woodland, suitable habitat (Cypripedium lower montane present. montanum) coniferous forest, and north coast coniferous forest (605’ – 7300’). California pitcherplant - - 4.2 Mesic areas in generally April – August Absent. No serpentinite seeps of suitable habitat (Darlingtonia bogs and ferns, and present. californica) meadows and seeps (0’ – 8,481’). Siskiyou buckwheat - - 4.3 Lower montane forest. July – Absent. No Rocky, often serpentinite September suitable habitat (Eriogonum soils present. siskiyouense) (3180’ – 8990’). Scott Valley buckwheat - - 1B.1 Cismontane woodland, July – Absent. No and lower montane September suitable habitat (Eriogonum coniferous forest present. umbellatum var. (2620’ – 2995’). lautum) Blushing wild - - 1B.3 Montane chaparral, and June – Absent. No buckwheat lower montane September suitable habitat coniferous forest. Rock present. (Eriogonum ursinum scree and talus var. erubescens) (2460’ – 6235’). Hoover’s spurge FT - 1B.2 Vernal pools July – Absent. No (82’ – 820’). September suitable habitat (Euphorbia hooveri) present. Gentner’s fritillary FE - 1B.1 Chaparral, cismontane April – May Absent. No woodland, and lower suitable habitat (Fritillaria genteri) montane coniferous present. forest. Sometimes serpentinite (3297’ – 9744’).

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Table 1. Potentially Occurring Special-Status Species

Status

Common Name Federal California Approximate Potential To Scientific Name ESA ESA Other Habitat Description Survey Dates Occur On-Site Scott Mountain - - 1B.2 Lower montane May – August Absent. No bedstraw coniferous forest. suitable habitat Serpentinite soils present. (Galium seroenticum (3280’ – 6810’). ssp. scotticum) Henderson’s horkelia - - 1B.1 Upper montane June – August Absent. No coniferous forest. suitable habitat (Horkelia hendersonii) Granitic soils present. (6560’ – 7545’). Alkali hymenoxys - - 2B.2 Great Basin scrub, lower June – August Absent. No montane coniferous suitable habitat (Hymenoxys lemmonii) forest, and meadows present. and seeps. Subalkaline soils (785’ – 11120’). Howell’s lewisia - - 3.2 Broadleafed upland April – July Absent. No forest, chaparral, suitable habitat (Lewisia cotyledon var. cismontane woodland, present. howellii) and lower montane coniferous forest. Rocky soils (490’ – 6595’). Woolly meadowfoam - - 4.2 Chaparral, cismontane March – May Low potential to woodland, valley and occur. The (Limnanthes floccosa foothill grassland, and annual grassland ssp. floccosa) vernal pools. Vernally on the Project mesic soils site represents (195’ – 4380’). marginal habitat for this species. Peck’s lomatium - - 2B.2 Chaparral, cismontane April – May Absent. No woodland, lower suitable habitat (Lomatium peckianum) montane coniferous present. forest, and pinyon and juniper woodland. Volcanic soils (2295’ – 5905’). Slender Orcutt grass FT CE 1B.1 Vernal pools, often May – Absent. No gravelly (115’ – 5,774’). September suitable habitat (Orcuttia tenuis) (Oct) present. Shasta orthocarpus - - 1B.1 Great Basin scrub, May Low potential to meadows and seeps, occur. The (Orthocarpus and valley and foothill annual grassland pachystachyus) grassland on the Project (2755’ – 2790’). site represents marginal habitat for this species.

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Table 1. Potentially Occurring Special-Status Species

Status

Common Name Federal California Approximate Potential To Scientific Name ESA ESA Other Habitat Description Survey Dates Occur On-Site Scott Valley phacelia - - 1B.2 Closed-cone coniferous April – June Absent. No forest, lower montane suitable habitat (Phacelia greenei) coniferous forest, present. subalpine coniferous forest, and upper montane coniferous forest. Serpentinite soils (2620’ – 8005’). Yreka phlox FE CE 1B.2 Lower montane April – June Absent. No coniferous forest, and suitable habitat (Phlox hirsuta) upper montane present. coniferous forest. Serpentinite soils, talus (2690’ – 4920’). Oregon polemonium - - 2B.2 Coastal prairie, coastal April – Absent. No scrub, and lower September suitable habitat (Polemonium carneum) montane coniferous present. forest (0’ – 6005’). Howell’s sandwort - - 1B.3 Chaparral, and lower April – July Absent. No montane coniferous suitable habitat (Sabulina howellii) forest. Serpentinite, xeric present. soils (1800’ – 3280’). Pendulous bulrush - - 2B.2 Meadows and seeps, June – August Absent. No and marshes and suitable habitat (Scirpus pendulus) swamps present. (2620’ – 3280’). Pale yellow stonecrop - - 4.3 Broadleafed upland May – July Absent. No forest, chaparral, suitable habitat (Sedum laxum ssp. cismontane woodland, present. flavidum) lower montane coniferous forest, and upper montane coniferous forest. Serpentinite or volcanic soils (1490’ – 6560’). Siskiyou clover - - 1B.1 Meadows and seeps. June – July Low potential to Sometimes streambanks occur. The banks (Trifolium siskiyouense) (2885’ – 4920’). of the intermittent stream on the Project site represents marginal habitat for this species. Yellow tritileia - - 4.3 Lower montane May – June Absent. No coniferous forest. suitable habitat (Tritileia crocea var. Granitic or serpentinite present. crocea) soils (3935’ – 6560’).

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Table 1. Potentially Occurring Special-Status Species

Status

Common Name Federal California Approximate Potential To Scientific Name ESA ESA Other Habitat Description Survey Dates Occur On-Site Invertebrates Conservancy fairy FE - - Vernal pools/wetlands. November – Absent. No shrimp April suitable habitat present. (Branchinecta conservatio) Vernal pool fairy shrimp FT - - Vernal pools/wetlands. November – Absent. No April suitable habitat (Branchinecta lynchi) present. Vernal pool tadpole FE - - Vernal pools/wetlands. November – Absent. No shrimp April suitable habitat present. (Lepidurus packardi) Fish Delta smelt FT CE - Sacramento-San N/A Absent. No Joaquin delta. suitable habitat Hypomesus present. transpacificus Lost River sucker FE - - Klamath Basin. Resident N/A Absent. No of deep lakes and pools. suitable habitat (Deltistes laxatus) Spawns in riffles of present. tributary streams. Shortnose sucker FE - - Klamath Basin. Resident N/A Absent. No of deep lakes and pools. suitable habitat (Chasmistes Spawns in riffles of present. brevirostris) tributary streams. Amphibians Oregon spotted frog FT - - Aquatic habitats, June – Absent. No especially large ponds. September suitable habitat (Rana pretiosa) present. Southern long-toed - - SSC Breeds in ponds and May – Absent. No salamander other lentic waters. Has September suitable habitat an extended larval stage, present. (Ambystoma and in some populations macrodactylum larvae overwinter. In sigillatum) California, occurs at high elevations in the Northern Sierra Nevada and Trinity Alps. Adults are terrestrial and return to water to breed in May and June.

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Table 1. Potentially Occurring Special-Status Species

Status

Common Name Federal California Approximate Potential To Scientific Name ESA ESA Other Habitat Description Survey Dates Occur On-Site Reptiles Northern western pond - - SSC Requires basking sites Any season Low potential to turtle and upland habitats up occur. The site to 0.5 km from water for represents (Actinemys marmorata) egg laying. Uses ponds, marginal upland streams, detention habitat for this basins, and irrigation species due to its ditches. proximity the intermittent stream habitat north of the Project site. Birds Clark’s grebe BCC Nesting occurs on Late-April – Absent. No floating rafts of September suitable habitat (Toxostoma redivivum) vegetation in open water. present. Western yellow-billed FT CE BCC Breeds in California, June 15 - Absent. No cuckoo Arizona, Utah, Colorado, August 15 suitable habitat and Wyoming. In present. The (Coccyzus americanus California, they nest riparian occidentalis) along the upper woodland Sacramento River and adjacent to the the South Fork Kern Project is too River from Isabella small to Reservoir to Canebrake represent nesting Ecological Reserve. habitat for this Other known nesting species. locations include Feather River (Butte, Yuba, Sutter counties), Prado Flood Control Basin (San Bernadine and Riverside Co.), Amargosa River and Owens Valley (Inyo Co.), Santa Clara River (Los Angeles Co.), Mojave River and Colorado River (San Bernardino Co.). Nests in riparian woodland. Winters in South America.

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Table 1. Potentially Occurring Special-Status Species

Status

Common Name Federal California Approximate Potential To Scientific Name ESA ESA Other Habitat Description Survey Dates Occur On-Site Rufous hummingbird - - BCC Breeds in extreme April – July Absent. No northwestern California suitable habitat (Selasphorus rufus) north into British present. Columbia and Alaska. Winters in coastal Southern California south into Mexico. Common migrant during March-April in Sierra Nevada foothills and June-August in Lower Conifer to Alpine zone of Sierra Nevada. Nesting habitat includes secondary succession communities and openings, mature forests, parks and residential area. Allen's hummingbird BCC Breeds along narrow February – Absent. The coastal band from SW June Project site (Selasphorus sasin) Oregon south to Santa occurs outside of Barbara and Ventura the breeding Cos. Channel Islands. range of this Migratory subspecies species. winter in Mexico, and sedentarius resident on Channel Islands and coastal southern California. Breeding occurs in coastal scrub, riparian habitat, mixed evergreen or live oak woodlands. Whimbrel - - BCC Nesting occurs in Alaska October – Absent. No and northern Canada; March suitable habitat (Numenius phaeopus) winters in coastal present. Oregon, California, south to Central America; wintering habitat includes tidal mudflats, coral reefs, lagoons, marshes, swamps, estuaries, sandy beaches, and rocky shores.

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Table 1. Potentially Occurring Special-Status Species

Status

Common Name Federal California Approximate Potential To Scientific Name ESA ESA Other Habitat Description Survey Dates Occur On-Site Long-billed curlew - - BCC Breeds east of the September – Absent. No Cascades in March suitable habitat (Numenius Washington, Oregon, (wintering) present. americanus) northeastern California (Siskiyou, Modoc, Lassen Cos.), east- central California (Inyo Co.), through Great Basin region into Great Plains. Winters in California, Texas, and Louisiana. Wintering habitat includes tidal mudflats and estuaries, wet pastures, sandy beaches, salt marsh, managed wetlands, evaporation ponds, sewage ponds, and grasslands. Marbled godwit - - BCC Nests in Montana, North August – April Absent. No and South Dakota, (Migrant/ suitable habitat (Limosa fedoa) Minnesota, into Canada. Wintering in present. Winter range along CA) Pacific Coast from British Columbia south to Central America, with small numbers wintering in interior California. Wintering habitat includes coastal mudflats, meadows, estuaries, sandy beaches, sandflats, and salt ponds. Semipalmated BCC Nest in southern tundra Wintering/ Absent. No sandpiper in Alaska and Canada on migrant period: suitable habitat the ground. Winters in September – present. (Calidris pusilla) coastal California south March to South America; Short-billed Dowitcher BCC Nests in Canada, Wintering/ Absent. No southern Alaska; winters migrant period: suitable habitat (Limnodromus griseus) in coastal California late-August – present. south to South America; May wintering habitat includes coastal mudflats and brackish lagoons

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Table 1. Potentially Occurring Special-Status Species

Status

Common Name Federal California Approximate Potential To Scientific Name ESA ESA Other Habitat Description Survey Dates Occur On-Site Lesser yellowlegs - - BCC Nests in Alaska and Wintering/ Absent. No Canada. In California, migrant period: suitable habitat (Tringa flavipes) winters along Pacific September – present. Coast from San March Francisco Bay south to Southern California, and Salton Sea. Wintering habitat includes a wide variety of wetlands such as salt, brackish, and freshwater marshes, sandbars, riverbanks, lakeshores, rain puddles, sewage lagoons, reservoirs, prairie sloughs, and salt pans. Willet BCC Nest inland on the Wintering/ Absent. No ground along pond migrant period: suitable habitat (Tringa semipalmata) edges and other late-August – present. seasonal wetlands, or on May raised sites near water, often in native grasslands. Bald eagle Fd CE CFP, Typically nests in February – Absent. No BCC forested areas near large September suitable habitat (Haliaeetus bodies of water in the (nesting); present. leucocephalus) northern half of October – California; nest in trees March and rarely on cliffs; (wintering) wintering habitat includes forest and woodland communities near water bodies (e.g. rivers, lakes), wetlands, flooded agricultural fields, open grasslands Northern goshawk - - SSC Nesting occurs in mature March – August Absent. No to old-growth forests suitable habitat (Accipiter gentilis) composed primarily of present. large trees with high canopy closure. In California, nests are built primarily in conifer trees in the Sierra Nevada, Cascade and northwestern coastal Ranges.

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Table 1. Potentially Occurring Special-Status Species

Status

Common Name Federal California Approximate Potential To Scientific Name ESA ESA Other Habitat Description Survey Dates Occur On-Site Golden eagle - - BCC, Nesting habitat includes Nest (February Absent. No CFP mountainous canyon – August); suitable habitat (Aquila chrysaetos) land, rimrock terrain of winter CV present. open desert and (October – grasslands, riparian, oak February) woodland/savannah, and chaparral. Nesting occurs on cliff ledges, river banks, trees, and human-made structures (e.g. windmills, platforms, and transmission towers). Breeding occurs throughout California, except the immediate coast, Central Valley floor, Salton Sea region, and the Colorado River region, where they can be found during winter. Northern spotted owl FT CC SSC Found from Marin Co. March – June Absent. No through coastal ranges suitable habitat (Strix occidentalis north to British present. caurina) Columbia; breeds in old growth mature forest. They use forests with greater complexity and structure. Olive-sided flycatcher - - SSC, Nests in montane and May – August Absent. No BCC northern coniferous suitable habitat (Contopus cooperi) forests, in forest present. openings, forest edges, semi-open forest stands. In California, nests in coastal forests, Cascade and Sierra Nevada region. Winters in Central to South America. California thrasher - - SSC Resident and endemic to February – July Absent. No coastal and Sierra suitable habitat (Toxostoma redivivum) Nevada-Cascade foothill present. areas of California. Nests are usually well hidden in dense shrubs, including scrub oak, California lilac, and chamise.

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Table 1. Potentially Occurring Special-Status Species

Status

Common Name Federal California Approximate Potential To Scientific Name ESA ESA Other Habitat Description Survey Dates Occur On-Site Mammals Gray wolf FE, FPD SE - Can occupy any habitat Any season Absent. No in the northern suitable habitat (Canis lupus) hemisphere as long as it present. contains large ungulates such as deer, elk, and moose. Occupied habitat can range from deserts, to grasslands, forests, and arctic tundra. Status Codes: FE ESA listed, Endangered. FT ESA listed, Threatened. FPD Listed under ESA, but formally proposed for delisting. Fd Formally Delisted (delisted species are monitored for 5 years). BCC USFWS Bird of Conservation Concern (USFWS, 2002). CE CESA or NPPA listed, Endangered. CR CESA or NPPA listed, Rare. CC Candidate for CESA listing as Endangered or Threatened. CFP California Fish and Game Code Fully Protected Species (§3511-birds, §4700-mammals, §5050-reptiles/amphibians). SSC CDFW Species of Special Concern (CDFW, updated December 2016). 1B CRPR /Rare or Endangered in California and elsewhere. 2B Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere 3 CRPR /Plants About Which More Information is Needed - A Review List. 4 CRPR /Plants of Limited Distribution - A Watch List. 0.1 Threat Rank/Seriously threatened in California (over 80% of occurrences threatened / high degree and immediacy of threat) 0.2 Threat Rank/Moderately threatened in California (20-80% occurrences threatened / moderate degree and immediacy of threat) 0.3 Threat Rank/Not very threatened in California (<20% of occurrences threatened / low degree and immediacy of threat or no current threats known) FE ESA listed, Endangered. FT ESA listed, Threatened.

4.5.1 Plants

Thirty-four special-status plant species were identified as having the potential to occur within the Project site based on the literature review (Table 1). However, upon further analysis, 31 species were determined to be absent from the Project site due to the lack of suitable habitat or because the Project site is outside of the known range for the species. No further discussion of these species is provided in this analysis. Three species were determined to have low potential to occur within the Project site. These species are discussed below.

Wooly Meadowfoam

Wooly meadowfoam (Limnanthes flocossa ssp. flocossa) is not listed pursuant to either the federal or California ESAs, but is designated as a CRPR 4.2 species. This species is an herbaceous annual that occurs in vernally mesic chaparral, cismontane woodland, valley and foothill grassland, and vernal pools (CNPS 2018). Wooly meadowfoam blooms between March and May and is known to occur at elevations ranging

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from 195 to 4380 feet above MSL (CNPS 2018). Its current range includes Butte, Lake, Lassen, Napa, Shasta, Siskiyou, Tehama, and Trinity Counties. (CNPS 2018).

Wooly meadowfoam was determined to have low potential to occur within the annual grassland within the Project site. The nearest CNDDB occurrence is approximately 0.8 miles from the Project Site (CDFW 2018).

Shasta Orthocarpus

Shasta orthocarpus (Orthocarpus pachystachyus) is not listed pursuant to either the federal or California ESAs, but is designated as a CRPR 1B.1 species. This species is an herbaceous annual that occurs in Great Basin scrub, meadows and seeps, and valley and foothill grassland (CNPS 2018). Shasta orthocarpus blooms in May and is known to occur at elevations ranging from 2755 to 2790 feet above MSL (CNPS 2018). Its current range only includes Siskiyou County (CNPS 2018).

Shasta orthocarpus was determined to have low potential to occur within the annual grassland within the Project site. The nearest CNDDB occurrence is approximately 0.8 miles from the Project Site CDFW (2018). The Project site is slightly below the known elevational range, but given the plant’s protected status and nearby occurrence, it cannot be ruled out from potentially occurring within the site.

Siskiyou Clover

Siskiyou clover (Trifolium siskiyouense) is not listed pursuant to either the federal or California ESAs, but is designated as a CRPR 1B.1 species. This species is an herbaceous annual that occurs in meadow, seeps, and sometimes streambanks (CNPS 2018). Siskiyou clover blooms between June and July and is known to occur at elevations ranging from 2885 to 4920 feet above MSL (CNPS 2018). Its current range includes Shasta and Siskiyou Counties. (CNPS 2018).

Siskiyou clover was determined to have low potential to occur within the streambank of the intermittent stream within the Project site. The nearest CNDDB occurrence is approximately 2.5 miles from the Project Site (CDFW 2018). The Project site is slightly below the known elevational range, but given the plant’s protected status and nearby occurrence, it cannot be ruled out from potentially occurring within the site.

4.5.2 Invertebrates

Three special-status invertebrate species were identified as having the potential to occur within the Project site based on the literature review (Table 1). However, upon further analysis, all three species were determined to be absent from the Project site due to the lack of suitable habitat. No further discussion of these species is provided in this analysis.

4.5.3 Fish

Three special-status fish species were identified as having the potential to occur within the Project site based on the literature review (Table 1). However, upon further analysis all three species were determined to be absent from the Project site due to the lack of suitable habitat. No further discussion of these species is provided in this analysis.

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4.5.4 Amphibians

Two special-status amphibian species were identified as having the potential to occur within the Project site based on the literature review (Table 1). However, upon further analysis both species were determined to be absent from the Project site due to the lack of suitable habitat. No further discussion of these species is provided in this analysis.

4.5.5 Reptiles

One special-status reptile species was identified as having the potential to occur within the Project site based on the literature review (Table 1). That species was determined to have low potential to occur within the Project site. More information regarding that species is provided below.

Northern Western Pond Turtle

The northern western pond turtle (Actinemys marmorata) is not listed pursuant to either the California or federal ESAs; however, it is designated as a CDFW SSC. Northern western pond turtles occur in a variety of fresh and brackish water habitats including marshes, lakes, ponds, and slow moving streams (Jennings and Hayes. 1994). This species is primarily aquatic; however, they typically leave aquatic habitats in the fall to reproduce and to overwinter (Jennings and Hayes. 1994). Deep, still water with abundant emergent woody debris, overhanging vegetation, and rock outcrops is optimal for basking and thermoregulation. Although adults are habitat generalists, hatchlings and juveniles and hatchlings require shallow edgewater with relatively dense submergent or short emergent vegetation in which to forage.

Northern western pond turtles are typically active between March and November. Mating generally occurs during late April and early May and eggs are deposited between late April and early August (Jennings and Hayes 1994). Eggs are deposited within excavated nests in upland areas, with substrates that typically have high clay or silt fractions (Jennings and Hayes 1994). The majority of nesting sites are located within 650 feet of the aquatic sites; however, nests have been documented as far as 1,310 feet from the aquatic habitat.

The stream adjacent to the Project site represents marginal aquatic habitat, and this proximity makes the Project site potential upland habitat. The nearest CNDDB occurrence is approximately 7.1 miles from the Project Site (CDFW 2018).

4.5.6 Birds

Seventeen special-status bird species were identified as having the potential to occur within the Project site based on the literature review (Table 1). However, upon further analysis, all 17 species were determined to be absent from the Project site due to the lack of suitable habitat. No further discussion of these species is provided in this analysis.

4.5.7 Mammals

One special-status mammal species was identified as having the potential to occur within the Project site based on the literature review (Table 1). However, upon further analysis, this species was determined to be

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absent from the Project site due to the lack of suitable habitat. No further discussion of this species is provided in this analysis.

4.5.8 Wildlife Movement/Corridors

The Project site is located adjacent to an existing development area to the east, south, and west. There is open land to the north of the Project, but wildlife that enters the Project from this direction must also exit the same way. Therefore, the Project Site does not function as a wildlife corridor.

5.0 RECOMMENDATIONS

5.1 Federal Permits and Authorization

5.1.1 USACE

Prior to 2014 there were approximately 150 linear feet of intermittent stream on the Project site, with approximately 0.25 acre of associated riparian vegetation. Subsequently, the waters of the stream were re- routed through an approximately 120 linear foot culvert and approximately 0.22 acre of the riparian vegetation was removed. Approximately 15 to 25 feet of the stream was filled along its southern extent within the Project site.

In order to mitigate for the impacts described above, and to minimize potential additional impacts to Waters of the U.S. due to the Project implementation, the following measures are recommended:

 A permit authorization to fill wetlands under the Section 404 of the federal CWA (Section 404 Permit) must be obtained from USACE. Mitigation measures will be developed as part of the Section 404 Permit to ensure no net loss of wetland function and values. An application for a Section 404 Permit for the Project will be prepared and submitted to USACE, and will include an assessment of directly impacted, avoided, and preserved acreages to Waters of the U.S. Mitigation for direct impacts to Waters of the U.S. within the Project site would occur at a minimum of 1:1 ratio for direct impacts; however, final mitigation requirements will be developed in consultation with USACE.

 It may be necessary to conduct a jurisdictional delineation of Waters of the U.S. in order to calculate the above impacts addressed in the 404 applications.

5.2 State Permits and Authorizations

5.2.1 RWCQB

 A Water Quality Certification or waiver pursuant to Section 401 of the CWA must be obtained for Section 404 permit actions.

5.2.2 CDFW

 A Streambed Alteration Agreement (SAA) pursuant to Section 1602 of the California Fish and Game Code must be obtained for any activity that will impact the bed, bank, or channel of any river, stream or lake. In addition, CDFW also regulates impacts to riparian vegetation. Mitigation measures will be developed during consultation with CDFW as part of the SAA authorization process to ensure

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protections to resources. The prior impacts and potential future impacts to riparian vegetation for Project implementation should be addressed in the SSA.

5.3 Special-Status Plant Species

Three special-status plant species have potential to occur with the Project site including wooly meadowfoam, Shasta orthocarpus, and Siskiyou clover. The following measure is recommended to minimize potential impacts to special-status plant species:

 Perform the focused plant surveys according to USFWS, CDFW, and CNPS protocol. Surveys will be timed according to the blooming period for target species and known reference populations, if available, and/or local herbaria will be visited prior to surveys to confirm the appropriate phenological state of the target species.

 If special-status plant species are found, avoidance zones may be established around plants to clearly demarcate areas for avoidance. Avoidance measures and buffer distances may vary between species and the specific avoidance zone distance will be determined in coordination with appropriate resource agencies (CDFW and USFWS).

 If special-status plant species are found within the Project and avoidance of the species is not possible, then additional measures such as seed collection and/or translocation may be developed in consultation with the appropriate agencies.

 If no special-status plants are found, no further measures pertaining to special-status plants are necessary.

5.4 Northern Western Pond Turtle

There is marginally suitable habitat for one special-status reptile (northern western pond turtle) within the Project. The following measure is recommended to minimize potential impacts to northern western pond turtle:

 The Project applicant shall retain a biologist to conduct a preconstruction northern western pond turtle survey preconstruction survey within 48 hours of the initiation of construction activity within suitable habitat for northern western pond turtle.

 If no northern western pond turtles are found, no further measures pertaining to this species are necessary.

 If northern western pond turtles are found within an area proposed for impact, a qualified biologist shall relocate the northwestern pond turtle to a suitable location away from the proposed construction in consultation with CDFW.

5.5 MBTA-Protected Birds

All native birds, including raptors, are protected under the California Fish and Game Code and the federal MBTA. As such, to ensure that there are no impacts to protected active nests, the following mitigation measures are recommended:

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 Conduct a preconstruction nesting bird survey of all suitable habitat on the project within 14 days of the commencement of construction during the nesting season (February 1-August 31). Surveys should be conducted within 300 feet of the Project for nesting raptors, and 100 feet of the Project for nesting songbirds. If active nests are found, a no-disturbance buffer around the nest shall be established. The buffer distance shall be established by a biologist in consultation with CDFW or the CEQA lead agency. The buffer shall be maintained until the fledglings are capable of flight and become independent of the nest tree, to be determined by a qualified biologist. Once the young are independent of the nest, no further measures are necessary. Preconstruction nesting surveys are not required for construction activity outside the nesting season.

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6.0 REFERENCES

California Department of Fish and Wildlife (CDFW). 2018. Rarefind 5. Online Version, commercial version. California Natural Diversity Database. The Resources Agency, Sacramento. Accessed February 2018.

California Native Plant Society (CNPS). 2018. Inventory of Rare and Endangered Plants in California (online edition, v8-02). California Native Plant Society. Sacramento, CA. Available online: http://cnps.site.aplus.net/cgi-bin/inv/inventory.cgi. Accessed February 2018.

Jennings, M.R., and M.P. Hayes. 1994. Amphibian and reptile species of special concern in California. A Report to the California Department of Fish and Game, Rancho Cordova, California.

Natural Resources Conservation Service (NRCS). 2017. National Hydric Soils List. Available Online: http://www.nrcs.usda.gov/wps/portal/nrcs/main/soils/use/hydric/. Accessed February 2017.

Natural Resources Conservation Service (NRCS). 2018. The Gridded Soil Survey Geographic (gSSURGO) Database for California. U.S. Department of Agriculture. Available Online: https://gdg.sc.egov.usda.gov/.

Natural Resources Conservation Service (NRCS), U.S. Geological Survey (USGS), and Environmental Protection Agency (USEPA). 20178. Watershed Boundary Dataset for California. Available online: http://datageteway.nrcs.usda.gov [Accessed February 2018].

U.S. Fish and Wildlife Service (USFWS). 2018. Species Lists. Available by request online: https://ecos.f ws.gov/ipac/

U.S. Geological Survey (USGS). 1981 rev.1984. "Yreka, California" 7.5-minute Quadrangle. Geological Survey. Denver, Colorado.

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LIST OF ATTACHMENTS

Attachment A – Montague Road Site – Wetland Screening Results

ATTACHMENT A

Montague Road Site – Wetland Screening Results

615-02 March 31, 2017

Joe Dell Cross Development, LLC 4336 Marsh Ridge Carrollton, TX 75010

SUBJECT: Montague Road Site—Wetland Screening Results

On March 28, ENPLAN conducted a wetland screening for a ±1.0-acre site located on the north side of Montague Road between North Main Street and Deer Creek Way, in the City of Yreka, Siskiyou County. The study area consists of the southern portion of Siskiyou County Assessor’s Parcel Number 053-591-380. The southern portion of the site consists of a ruderal grassland; the northern portion of the site supports a heavily disturbed riparian habitat community. We understand the site is currently being evaluated by the City of Yreka in support of a future development. As part of their review, the City requested that the limits of riparian habitat be mapped to aid in establishing an appropriate development setback.

The ruderal grassland occurring along Montague Road is represented by yellow star- thistle (Centauria solstitialis), red-stemmed filaree (Erodium cicutarium), rabbitbrush (Ericamaria nauseosa), cleavers (Galium aparine), whitlow grass (Draba verna), medusahead (Elymus caput-medusae), and bulbous bluegrass (Poa bulbosa). A few box elders (Acer negundo) occur near the southwest corner of the site. Representative species within the disturbed riparian community include: few-seeded bittercress (Cardamine oligosperma), curly dock (Rumex crispus), wooly mullein (Verbascum thapsus), and poison hemlock (Conium maculatum).

The California Department of Fish and Wildlife (CDFW) defines riparian habitat as “lands which contain habitat which grows close to and which depends upon soil moisture from a nearby freshwater source.” The northern portion of the site supports a heavily disturbed riparian habitat community, which would be subject to CDFW jurisdiction.

In reviewing aerial imagery, a significant amount of woody riparian vegetation was removed sometime after July 2014. Prior to vegetation removal, the on-site riparian corridor and associated intermittent stream were approximately 150 feet long (Figure 1). During our field evaluation, in addition to vegetation removal, we noted that approximately 120 lineal feet of the intermittent stream was placed in a pipe (Figure 2). Immediately downstream of the pipe we observed box elder, red willow (Salix lavevigata), and Himalayan blackberry (Rubus armeniacus) with nearly one hundred percent vegetative cover. Based on our field observations, we assume the ±120 lineal feet of removed riparian vegetation was comprised of these species. The riparian

ENPLAN  3179 Bechelli Lane, Suite 100, Redding, CA 96002  530/221-0440  FAX 530/221-6963  www.enplan.com N:\companyfiles\01-Jobs Active\615-02 Cross Development LLC - Yreka Site\1-Documents\Wetland Screening Rpt 033117.doc Joe Dell March 31, 2017 Page 2 community exhibits a distinct topographic break and is approximately six feet lower than the adjacent ruderal grassland. During the field evaluation, we observed between 15 and 25 lineal feet of fill that had been placed within the southern portion of the riparian area. Representative photos are included in Appendix A.

The estimated limits of riparian habitat prior to vegetation removal, as well as the current top of bank (post-disturbance) are depicted in Figure 2. With respect to the setback, based on previous guidance provided by CDFW, we anticipate both the City of Yreka and CDFW will use the limits of riparian vegetation prior to disturbance activities.

Please contact me if you have any questions regarding our survey results.

Sincerely,

John Luper Environmental Scientist encl. Figure 1. Pre-Disturbance Conditions (2014 Aerial) Figure 2. Wetland Screening Results (2016 Aerial) Appendix A. Representative Photos Study Site Estimated Limits of Riparian Habitat Pre-disturbance Flow Direction d x m . 7 1 0 3 3 0 l a i r e A

4 1 0 2 s d n o C e c n a b r u t s i D - e r P

1 g i F \ s t n e m u c o D p a M - 3 \ S I G t c e j o r P - 3 \ e t i S a k e r Y

-

C L L t n e m p o l e v e D M s ont s ague o R r oad C

2 0 - 5 1 6 \ e v i t c A s b o J - 1 0 \ s e l i f y n a p m o c \ : N

: h t a P All depictions are approximate. Not a survey product. 03.30.17 Figure 1 Feet X 0 50 Pre-Disturbance Conditions (2014 Aerial) Study Site Estimated Limits of Riparian Habitat - Pre-disturbance Limits of Riparian Habitat (New Top of Bank) Post-disturbance Flow Direction Culvert d x m . 7 1 0 3 3 0 l a i r e A

6 1 0 2 - s t l u s e R n i l e D t a t i b a H p i R

2 g i F \ s t n e m u c o D p a M - 3 \ S I G t c e j o r P - 3 \ e t i S a k e r Y

-

C L L t n e m p o l e v e D M s ont s ague o R r oad C

2 0 - 5 1 6 \ e v i t c A s b o J - 1 0 \ s e l i f y n a p m o c \ : N

: h t a P All depictions are approximate. Not a survey product. 03.30.17 Figure 2 Feet X 0 50 Wetland Screening Results (2016 Aerial) APPENDIX A Representative Photos

Southern portion of site looking north from Montague Road

Southern portion of site looking northeast from southwest corner

615-02 Page 1 of 4 Site frontage along Montague Road looking east

Culverted stream looking east from site boundary (disturbed riparian habitat) (new fill within riparian habitat to right of pipe)

615-02 Page 2 of 4

Disturbed riparian habitat/culverted stream looking west from new top of bank

Culverted stream looking southwest

615-02 Page 3 of 4 Culvert outfall looking east from western site boundary

Undisturbed riparian habitat looking northeast

615-02 Page 4 of 4 Draft Initial Study and Mitigated Negative Declaration Dollar General Retail Store

APPENDIX C

Cultural Resources Records Search and Literature Review (CONFIDENTIAL)

Draft Initial Study and Mitigated Negative Declaration Dollar General Retail Store

APPENDIX D

Geotechnical Engineering Investigation

ORY

FORENSIC ● LABORAT FORENSIC GEOTECHNICAL ENGINEERING INVESTIGATION

PROPOSED DOLLAR GENERAL STORE MONTAGUE ROAD EAST OF N. MAIN STREET YREKA, CALIFORNIA

TING & INSPECTION ● TING & INSPECTION

SALEM PROJECT NO. 5-216-0552 JUNE 17, 2016

PREPARED FOR:

GY ● MATERIALS TES MATERIALS ● GY CROSS DEVELOPMENT, LLC 5317 INVERRARY DRIVE PLANO, TX 75093

PREPARED BY:

SALEM ENGINEERING GROUP, INC.

IRONMENTAL ● GEOLO● IRONMENTAL 4729 W. JACQUELYN AVENUE FRESNO, CA 93722 P: (559) 271-9700 F: (559) 275-0827 www.salem.net

SAN JOSE ▪ STOCKTON ▪ FRESNO ▪ BAKERSFIELD ▪ RANCHO CUCAMONGA DALLAS, TEXAS ▪ CHARLESTON, SOUTH CAROLINA

GEOTECHNICAL ● ENVGEOTECHNICAL

4729 W. Jacquelyn Avenue Fresno, CA 93722 Phone (559) 271-9700 Fax (559) 275-0827

June 17, 2016 Project No. 5-216-0552 Cross Development, LLC 5317 Inverrary Drive Plano, TX 75093 (214) 614-8252 [email protected]

Attention: Mr. Joe Dell

Subject: GEOTECHNICAL ENGINEERING INVESTIGATION PROPOSED DOLLAR GENERAL STORE MONTAGUE ROAD EAST OF N. MAIN STREET YREKA, CALIFORNIA

Dear Mr. Dell:

At your request and authorization, SALEM Engineering Group, Inc. (SALEM) has prepared this Geotechnical Engineering Investigation report for the site of the proposed Dollar General Store to be located at the subject site. The attached report presents our understanding of the project information provided to SALEM, reviews our exploration procedures, describes existing site and general subsurface conditions, and presents our evaluations, conclusions, and recommendations.

We have enjoyed working with you on this project, and we are prepared to assist you with the recommended quality assurance monitoring and testing services during construction. Please do not hesitate to contact us if you have any questions regarding this report or if we may be of further service.

Respectfully Submitted,

SALEM ENGINEERING GROUP, INC.

Shaun Reich, EIT R. Sammy Salem, MS, PE, GE Geotechnical Project Engineer Principal Managing Engineer Central / Northern California RCE 52762 / RGE 2549

SAN JOSE ▪ STOCKTON ▪ FRESNO ▪ BAKERSFIELD ▪ RANCHO CUCAMONGA DALLAS, TEXAS ▪ CHARLESTON, SOUTH CAROLINA

TABLE OF CONTENTS

1. PURPOSE AND SCOPE ...... 1 2. PROJECT DESCRIPTION ...... 1 3. SITE LOCATION AND DESCRIPTION ...... 2 4. FIELD EXPLORATION ...... 2 5. LABORATORY TESTING ...... 3 6. GEOLOGIC SETTING ...... 3 7. GEOLOGIC HAZARDS ...... 4 7.1 Faulting and Seismicity ...... 4 7.2 Surface Fault Rupture ...... 4 7.3 Ground Shaking ...... 5 7.4 Liquefaction ...... 5 8. SOIL AND GROUNDWATER CONDITIONS ...... 5 8.1 Subsurface Conditions ...... 5 8.2 Groundwater ...... 6 8.3 Soil Corrosion Screening ...... 6 9. CONCLUSIONS AND RECOMMENDATIONS ...... 7 9.1 General ...... 7 9.2 Seismic Design Criteria ...... 9 9.3 Soil and Excavation Characteristics ...... 10 9.4 Materials for Fill ...... 10 9.5 Grading ...... 11 9.6 Shallow Foundations ...... 14 9.7 Concrete Slabs-on-Grade ...... 15 9.8 Lateral Earth Pressures and Frictional Resistance ...... 17 9.9 Retaining Walls ...... 18 9.10 Temporary Excavations ...... 19 9.11 Underground Utilities ...... 20 9.12 Surface Drainage ...... 20 9.13 Pavement Design ...... 21 10. PLAN REVIEW, CONSTRUCTION OBSERVATION AND TESTING ...... 22 10.1 Plan and Specification Review ...... 22 10.2 Construction Observation and Testing Services ...... 22 11. LIMITATIONS AND CHANGED CONDITIONS ...... 23

TABLE OF CONTENTS (cont.)

FIGURES Figure 1, Vicinity Map Figure 2, Site Plan

APPENDIX A – FIELD INVESTIGATION Figures A1 through A9, Logs of Exploratory Soil Borings B-1 through B-9

APPENDIX B – LABORATORY TESTING Consolidation Curves Direct Shear Test Results Gradation Curves R-Value Test Results Corrosivity Test Results Optimum Moisture / Maximum Density Test Results Expansion Index Test Results Plasticity Index Test Results

4729 W. Jacquelyn Avenue Fresno, CA 93722 Phone (559) 271-9700 Fax (559) 275-0827

GEOTECHNICAL ENGINEERING INVESTIGATION PROPOSED DOLLAR GENERAL STORE MONTAGUE ROAD EAST OF N. MAIN STREET YREKA, CALIFORNIA

1. PURPOSE AND SCOPE

This report presents the results of our Geotechnical Engineering Investigation for the proposed Dollar General Store to be located at the subject address near Yreka, in Siskiyou County, California (see Figure 1, Vicinity Map). The site has been given a Siskiyou County Assessor’s Parcel Number (APN) of 053- 591-380.

The purpose of our geotechnical engineering investigation was to observe and sample the subsurface conditions encountered at the site, and provide conclusions and recommendations relative to the geotechnical aspects of constructing the project as presently proposed.

The scope of this investigation included a field exploration, laboratory testing, engineering analysis and the preparation of this report. Our field exploration was performed on June 7, 2016 and included the drilling of nine (9) small-diameter soil borings to a maximum depth of 27 feet below existing site grades. The locations of the soil borings are depicted on Figure 2, Site Plan. A detailed discussion of our field investigation and exploratory boring logs are presented in Appendix A.

Laboratory tests were performed on selected soil samples obtained during the investigation to evaluate pertinent physical properties for engineering analyses. Appendix B presents the laboratory test results in tabular and graphic format.

The recommendations presented herein are based on analysis of the data obtained during the investigation and our experience with similar soil and geologic conditions.

If project details vary significantly from those described herein, SALEM should be contacted to determine the necessity for review and possible revision of this report.

2. PROJECT DESCRIPTION

We understand that Cross Development, LLC is considering construction of a new Dollar General Store building on a rectangular shaped parcel located on the north side of Montague Road, east of Main Street, within Yreka, Siskiyou County, California. The site has been given a Siskiyou County Assessor’s Parcel Number (APN) of 053-591-380. The project site encompasses a total site area of approximately ±1.1 acre. The proposed building will cover an area of approximately 9,100 square-feet. On-site parking and landscaping are planned to be associated with the development.

Project No. 5-216-0552 - 1 -

Structural loads were not provided to us; however, based upon previous similar projects, it is anticipated that the building will likely require shallow foundations with column and continuous wall footings that have loads of up to approximately 75 kips and 3 kips per linear foot, respectively. Concrete and asphaltic concrete pavement for parking area, customers travel lanes, and truck lanes will be designed for standard duty and heavy-duty traffic loading based on an Equivalent Single Axle Load (ESAL) of 18 kips, a maximum load of 60,000 ESAL, and a design life of 20 years. The pavement design recommendations will be based upon the State of California Department of Transportation design manual.

As the existing project area is generally level, minimal cuts and fills during earthwork will be anticipated to providing a level building pad and positive site drainage.

The information presented in this section was used in our evaluation for the planned development. Estimated loads and corresponding foundation sizes have a direct effect on the recommendations, including the type of foundation, the allowable bearing pressure, and settlement due to foundation loads. In addition, estimated finish subgrade elevations and assumed cut/fill grading quantities can have a direct effect on the provided recommendations. If any of the noted/assumed information is incorrect or has changed, please inform SALEM so that we may amend the recommendations presented in this report, if necessary.

The site configuration and locations of proposed improvements are shown on the Site Plan, Figure 2.

3. SITE LOCATION AND DESCRIPTION

The subject site is located along the north side of Montague Road, east of Main Street, within the community of Yreka, within Siskiyou County, California (see Site Plan, Figure 2). The project site comprises a total site area of approximately ±1.1 acre. At the time of our field exploration, the site was observed to be vacant and supported a heavy growth of seasonal vegetation, bushes, and mature trees. The project site is surrounded by a commercial property to the east and west, Montague Road to the south, and vacant property to the north. The site area has an elevation of approximately ±2,584 feet above mean sea level (AMSL).

4. FIELD EXPLORATION

Our field exploration consisted of site surface reconnaissance and subsurface exploration. A total of nine borings (B-1 through B-9) were advanced within the proposed building pad and parking and drive areas. The exploratory test borings were drilled on June 7, 2016 within the areas shown on the Site Plan, Figure 2. The test borings were advanced with a 4-inch diameter solid flight and 8-inch hollow stem auger rotated by a truck-mounted CME-45C drill rig. The test borings were extended to auger depths ranging from 5.5 feet to 27 below existing grade. Auger refusal was encountered in boring B-5 at a depth of 27 feet due to competent bedrock.

The materials encountered in the test borings were visually classified in the field, and logs were recorded by a field engineer and stratification lines were approximated on the basis of observations made at the time of drilling. Visual classification of the materials encountered in the test borings were generally made in accordance with the Unified Soil Classification System (ASTM D2487). A soil classification chart and key to sampling is presented on the Unified Soil Classification Chart, in Appendix "A." The logs of the test borings are presented in Appendix "A." The Boring Logs include the soil type, color, moisture content,

Project No. 5-216-0552 - 2 -

dry density, and the applicable Unified Soil Classification System symbol. The location of the test borings were determined by measuring from features shown on the Site Plan, provided to us. Hence, accuracy can be implied only to the degree that this method warrants. The actual boundaries between different soil types may be gradual and soil conditions may vary. For a more detailed description of the materials encountered, the Boring Logs in Appendix "A" should be consulted.

Subsurface soil samples were obtained by driving a Modified California sampler (MCS) and a Standard Penetration Test (SPT) sampler. Penetration resistance blow counts were obtained by dropping an automated 140-pound trip hammer through a 30-inch free fall to drive the sampler to a maximum depth of 18 inches. The number of blows required to drive the last 12 inches is recorded as Penetration Resistance (blows/foot) on the logs of the borings. In case very high penetration resistance is encountered, the number of blows recorded may be for less than 12 inches.

Soil samples were obtained from the test borings at the depths shown on the logs of borings. The MCS samples were recovered and capped at both ends to preserve the samples at their natural moisture content; SPT samples were recovered and placed in a sealed bag to preserve their natural moisture content.

The borings were permitted (Permit # W16-094) and backfilled with bentonite grout in accordance with Siskiyou County requirements after completion of the drilling.

5. LABORATORY TESTING

Laboratory tests were performed on selected soil samples to evaluate their physical characteristics and engineering properties. The laboratory-testing program was formulated with emphasis on the evaluation of natural moisture, density, shear strength, consolidation potential, expansion index, plasticity index, optimum moisture/maximum density, R-Value, and gradation of the materials encountered. In addition, chemical tests were performed to evaluate the corrosivity of the soils to buried concrete and metal. Details of the laboratory test program and the results of laboratory test are summarized in Appendix "B." This information, along with the field observations, was used to prepare the final boring logs in Appendix "A."

6. GEOLOGIC SETTING

The Yreka area is located within Shasta Valley in Siskiyou County in central-northern California. Shasta Valley, extending northward from the north face of Mount Shasta, is a 340 square-mile basin that is a relatively flat-lying semi-arid plain punctuated by hundreds of hills, ridges, and small closed depressions (not connected by surface streams). The Shasta River drains northward through the valley to join the Klamath River near the Oregon border.

Shasta Valley lies between two geomorphic provinces, the Klamath Mountains on the west, and the Cascade Range on the east. Geomorphic provinces are naturally defined geologic regions that display a distinct landscape or landform. Eleven provinces are distinguished in California with each region displaying unique, defining features based on geology, faults, topographic relief and climate. The Klamath Mountains on the west are characterized by complexly folded and faulted metamorphic, sedimentary, volcanic, and ultramafic rocks of Paleozoic age and by marine sandstone and conglomerate of Cretaceous age. East of Shasta Valley the Cascade Range is dominated by Cenozoic age volcanic rock. The Cascade Range is a mountainous region famous for its chain of tall volcanoes that run north-south along the west coast of North America from British Columbia through Washington and Oregon to Shasta Mountain and Lassen Peak in northern California. The Cascades are part of the Pacific Ring of Fire, the

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ring of volcanoes around the Pacific Ocean. All of the known historic eruptions in the contiguous United States have been from volcanoes in the Cascade Range.

7. GEOLOGIC HAZARDS

7.1 Faulting and Seismicity

The project area is not within an Alquist-Priolo Earthquake Fault (Special Studies) Zone and will not require a special site investigation by an Engineering Geologist. Soils on site are classified as Site Class D in accordance with Chapter 16 of the California Building Code. The proposed structures are determined to be in Seismic Design Category D. To determine the distance of known active faults within 100 miles of the site, we used the United States Geological Survey (USGS) web-based application 2008 National Seismic Hazard Maps - Fault Parameters. Site latitude is 41.7404 ° North; site longitude is -122.6319° West. Based on the web-based application, the ten closest active faults are summarized in Table 7.1.

TABLE 7.1 REGIONAL FAULT SUMMARY

Distance to Site Maximum Earthquake Fault Name (miles) Magnitude, Mw Cedar Mtn.-Mahogany Mtn. 35.8 7.1 Sky Lake fault zone 41.1 7.1 Klamath Garben fault system 49.6 6.5 (West) Gillem-Big Crack 54.1 6.8 Hat Creek-McArthur-Mayfield 55.4 7.2 Klamath Garben fault system (east) 56.4 7.4 Big Lagoon-Bald Mtn 83. 3 7.5 Trinidad 89.6 7.5 Whales head fault zone 92.5 7.0 McKinley Ville 93.0 7.2 The faults tabulated above and numerous other faults in the region are sources of potential ground motion. However, earthquakes that might occur on other faults throughout California are also potential generators of significant ground motion and could subject the site to intense ground shaking.

7.2 Surface Fault Rupture

The site is not within a currently established State of California Earthquake Fault Zone for surface fault rupture hazards. No active faults with the potential for surface fault rupture are known to pass directly beneath the site. Therefore, the potential for surface rupture due to faulting occurring beneath the site during the design life of the proposed development is considered low.

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7.3 Ground Shaking

We used the USGS web-based application US Seismic Design Maps to estimate the peak ground acceleration adjusted for site class effects (PGAM). Because of the proximity to the subject site and the maximum probable events for these faults, it appears that a maximum probable event along the fault zones could produce a peak horizontal acceleration of approximately 0.368 g (2% probability of being exceeded in 50 years).

While listing PGA is useful for comparison of potential effects of fault activity in a region, other considerations are important in seismic design, including frequency and duration of motion and soil conditions underlying the site.

7.4 Liquefaction

The site is not located within a State of California Seismic Hazard Zone for liquefaction. Soil liquefaction is a state of soil particles suspension caused by a complete loss of strength when the effective stress drops to zero. Liquefaction normally occurs under saturated conditions in soils such as sand in which the strength is purely frictional. Primary factors that trigger liquefaction are: moderate to strong ground shaking (seismic source), relatively clean, loose granular soils (primarily poorly graded sands and silty sands), and saturated soil conditions (shallow groundwater). Due to the increasing overburden pressure with depth, liquefaction of granular soils is generally limited to the upper 50 feet of a soil profile. However, liquefaction has occurred in soils other than clean sand.

The soils encountered within the near surface depths explored on the project site, predominately consisted of loose to medium dense clayey sand with gravel. The near surface soils were underlain by interchanging layers of stiff sandy clay, soft to firm clay and sandy clay, loose to medium dense sand with clay, loose to medium dense clayey sand with gravel, firm to very stiff clay with gravel, medium dense clayey gravel, very dense gravel with sand, to the maximum depth explored. Free groundwater was encountered in the borings at a depth of 18 feet below ground surface (bgs). Available records from the Geotracker website indicate groundwater in the nearby vicinity can be as shallow as 9 feet bgs.

A seismic hazard, which could cause damage to the proposed development during seismic shaking, is the post-liquefaction settlement of the liquefied sands. Based on the depth to groundwater, the fines content of the soil profile, the apparent density of the soil, and the seismicity of the region, it is our opinion that the site has a low potential for liquefaction and minimal dry sand settlement; therefore, no mitigation measures are warranted.

8. SOIL AND GROUNDWATER CONDITIONS

8.1 Subsurface Conditions

The subsurface conditions encountered appear typical of those found in the geologic region of the site. Data obtained during the field exploration indicates, in general, near surface soils consisting predominately consisted of loose to medium dense clayey sand with gravel. The near surface soils were underlain by interchanging layers of stiff sandy clay, soft to firm clay and sandy clay, loose to medium dense sand with

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clay, loose to medium dense clayey sand with gravel, firm to very stiff clay with gravel, medium dense clayey gravel, very dense gravel with sand, to the maximum depth explored. Refusal due to competent bedrock was encountered at a depth of 27 feet below grade surface (bgs), within Boring B-5. Fill soils may be present at boring B-2 at a depth of 2 to 5-feet and maybe present between our test boring locations. If fill is encountered, verification of the extent of fill should be determined during site grading.

Laboratory consolidation test results indicated moderate compressibility. Soil conditions described in the previous paragraphs are generalized. Therefore, the reader should consult exploratory boring logs included in Appendix A for soil type, color, moisture, consistency, and USCS classification of the materials encountered at specific locations and elevations.

8.2 Groundwater

The boring locations were checked for the presence of groundwater during and after the drilling operations. Free groundwater was encountered in the borings at a depth of 18 feet below ground surface (bgs). Available records from the Geotracker website indicate groundwater in the nearby vicinity can be as shallow as 9 feet bgs.

It should be recognized that water table elevations may fluctuate with time, being dependent upon seasonal precipitation, irrigation, land use, localized pumping, and climatic conditions as well as other factors. Therefore, water level observations at the time of the field investigation may vary from those encountered during the construction phase of the project. The evaluation of such factors is beyond the scope of this report.

8.3 Soil Corrosion Screening

Excessive sulfate in either the soil or native water may result in an adverse reaction between the cement in concrete and the soil. The 2011 Edition of ACI 318 (ACI 318) has established criteria for evaluation of sulfate and chloride levels and how they relate to cement reactivity with soil and/or water. A soil sample was obtained from the project site and was tested for the evaluation of the potential for concrete deterioration or steel corrosion due to attack by soil-borne soluble salts and soluble chloride. The water-soluble sulfate concentration in the saturation extract from the soil sample was detected to be 50 mg/kg.

ACI 318 Tables 4.2.1 and 4.3.1 outline exposure categories, classes, and concrete requirements by exposure class. ACI 318 requirements for site concrete based upon soluble sulfate are summarized in Table 8.3 below.

TABLE 8.3 WATER SOLUBLE SULFATE EXPOSURE REQUIREMENTS

Dissolved Minimum Cementitious Sulfate (SO ) in Exposure Exposure Maximum Concrete 4 Materials Soil % by Severity Class w/cm Ratio Compressive Type Weight Strength Not Not No Type 0.005 S0 2,500 psi Applicable Applicable Restriction

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The water-soluble chloride concentration detected in saturation extract from the soil samples was 14 mg/kg. This level of chloride concentration is considered negligibly corrosive.

It is recommended that, at a minimum, applicable manufacturer’s recommendations for corrosion protection of buried metal pipe be closely followed.

9. CONCLUSIONS AND RECOMMENDATIONS

9.1 General

9.1.1 The scope of this investigation did not include subsurface exploration within existing or proposed buildings at the site. Our firm should be consulted at the time of demolition activities if soil conditions not consistent with those identified as part of this investigation are encountered so that we can provide additional recommendations as needed.

9.1.2 Based upon the data collected during this investigation, and from a geotechnical engineering standpoint, it is our opinion that the site is suitable for the proposed construction of improvements at the site as planned, provided the recommendations contained in this report are incorporated into the project design and construction. Conclusions and recommendations provided in this report are based on our review of available literature, analysis of data obtained from our field exploration and laboratory testing program, and our understanding of the proposed development at this time, as outlined in the project description section.

9.1.3 The primary geotechnical constraints identified in our investigation is the presence of moderate to highly compressible near surface soils and moderately expansive soils at the site. Boring B-2 (see attached Site Plan) encountered subgrade having characteristics of undocumented fill at approximate depths of 2 to 5 feet. The location surrounding Boring B-2 should be further investigated during site grading to verify the extent of the fill subgrade. Recommendations to mitigate the effects of these soils are provided in this report.

9.1.4 Fill materials may be present on site between boring locations. Boring B-2 (see attached Site Plan) encountered subgrade having characteristics of undocumented fill at approximate depths of 2 to 5 feet. Additional fill may be present between boring locations. Undocumented fill materials are not suitable to support any future structures and should be excavated and replaced with Engineered Fill. Prior to fill placement, SALEM should inspect the bottom of the excavation to verify the bottom condition.

9.1.5 The site currently consists of a mostly undeveloped lot. Site demolition activities shall include removal of all surface obstructions not intended to be incorporated into final site design. In addition, underground buried structures and/or utility lines encountered during demolition and construction should be properly removed and the resulting excavations backfilled with Engineered Fill. At the time of construction, it is recommended that any disturbed soils within building areas be removed and/or recompacted.

9.1.6 The clayey soils exhibited swell potential (Plasticity Index of 13) and are subject to volumetric changes if moisture contents vary. The clayey soil, in its present condition, possess a moderate hazard to construction in terms of possible post-construction movement of the foundations and

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floor systems if no mitigation measures are employed. The estimated swell pressures of the clayey material may cause movement affecting slabs and brittle exterior finishes. These upper soils exhibited moderate to high compressibility upon introduction of water during the consolidation test. As recommended in Section 9.5, to minimize post-construction soil movement and provide uniform support for the proposed structures, it is recommended that the overexcavation and recompaction within the proposed building area be performed to a minimum depth of three (3) feet below existing grade or two (2) feet below proposed footing bottom, whichever is deeper. In addition, measures are considered necessary to reduce anticipated soil movement. To minimize the potential soil movement due to expansive soil conditions, it is recommended that the upper 18 inches of soil beneath the required granular aggregate subbase within slab-on-grade and exterior flatwork areas consist of Non-Expansive Engineered Fill meeting the requirements of Section 9.4. The overexcavation and recompaction should also extend laterally to a minimum of 5 feet beyond the outer edges of the proposed footings. Loose fill soils should be removed and replaced with properly moisture conditioned and compacted Engineered Fill. Success of the mitigation measures will depend on the thoroughness of the contractor in dealing with the soil conditions. On-site, non-expansive, sandy silt and silty sand soils may be utilized as engineered-fill. Other than extensive soil replacement, mitigation measures will not eliminate post-construction soil movement, but will reduce the soil movement. Loose fill soils (Boring B-2 and elsewhere) should be removed and replaced with properly moisture conditioned and compacted Engineered Fill. Success of the mitigation measures will depend on the thoroughness of the contractor and developer in dealing with the soil conditions. In any event, the developer should be aware that some soil movement is to be expected.

9.1.7 The upper 12 inches of final pavement subgrade, whether completed at-grade, by excavation, or by filling, should be uniformly moisture-conditioned to 2 to 4 percent over optimum moisture content and compacted to at least 90% relative compaction.

9.1.8 Based on the subsurface conditions at the site and the anticipated structural loading, we anticipate that the proposed building may be supported using conventional shallow foundations provided that the recommendations presented herein are incorporated in the design and construction of the project.

9.1.9 Provided the site is graded in accordance with the recommendations of this report and foundations constructed as described herein, we estimate that total settlement due to static loads utilizing conventional shallow foundations for the proposed buildings will be less than 1-inch and corresponding differential settlement will be less than ½ inch.

9.1.10 All references to relative compaction and optimum moisture content in this report are based on ASTM D 1557 (latest edition).

9.1.11 We should be retained to review the project plans as they develop further, provide engineering consultation as-needed, and perform geotechnical observation and testing services during construction.

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9.2 Seismic Design Criteria

9.2.1 For seismic design of the structures, and in accordance with the seismic provisions of the 2013 CBC, our recommended parameters are shown below. These parameters are based on Probabilistic Ground Motion of 2% Probability of Exceedance in 50 years. The Site Class was determined based on the results of our field exploration.

TABLE 9.2.1 2013 CBC SEISMIC DESIGN PARAMETERS 2010 ASCE 7 or Seismic Item Symbol Value 2013 CBC Reference 41.7404 Lat Site Coordinates (Datum = NAD 83) -122.6319 Lon Site Class -- D ASCE 7 Table 20.3 Soil Profile Name -- Stiff Soil ASCE 7 Table 20.3 Risk Category -- II CBC Table 1604.5

Site Coefficient for PGA FPGA 1.191 ASCE 7 Table 11.8-1 Peak Ground Acceleration ASCE 7 Equation PGAM 0.368 (adjusted for Site Class effects) 11.8-1 ASCE 7 Table 11.6-1 Seismic Design Category SDC D & 2 Mapped Spectral Acceleration CBC Figure S 0.693 g (Short period - 0.2 sec) S 1613.3.1(1-6) Mapped Spectral Acceleration CBC Figure S1 0.333 g (1.0 sec. period) 1613.3.1(1-6) CBC Table Site Class Modified Site Coefficient F 1.246 a 1613.3.3(1) CBC Table Site Class Modified Site Coefficient F 1.735 v 1613.3.3(2) MCE Spectral Response Acceleration SMS 0.863 g CBC Equation 16-37 (Short period - 0.2 sec) SMS = Fa SS MCE Spectral Response Acceleration SM1 0.577 g CBC Equation 16-38 (1.0 sec. period) SM1 = Fv S1 Design Spectral Response Acceleration SDS 0.575 g CBC Equation 16-39 SDS=⅔SMS (short period - 0.2 sec) Design Spectral Response Acceleration SD1 0.385 g CBC Equation 16-40 SD1=⅔SM1 (1.0 sec. period)

9.2.2 Conformance to the criteria in the above table for seismic design does not constitute any kind of guarantee or assurance that significant structural damage or ground failure will not occur if a large earthquake occurs. The primary goal of seismic design is to protect life, not to avoid all damage, since such design may be economically prohibitive.

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9.3 Soil and Excavation Characteristics

9.3.1 Based on the soil conditions encountered in our soil borings, the onsite soils can be excavated with moderate effort using conventional excavation equipment. Boring B-2 (see attached Site Plan) encountered subgrade having characteristics of undocumented fill at approximate depths of 2 to 5 feet. The location surrounding Boring B-2 should be further investigated during site grading to verify the presence and extent of the fill subgrade.

9.3.2 It is the responsibility of the contractor to ensure that all excavations and trenches are properly shored and maintained in accordance with applicable Occupational Safety and Health Administration (OSHA) rules and regulations to maintain safety and maintain the stability of adjacent existing improvements. Temporary excavations are further discussed in a later Section of this report.

9.3.3 The upper soils within the project site are identified as clayey sand with some gravel. The near surface soils are moderately to highly compressible. Conventional excavating equipment may be used to excavate the soils encountered. Due to the presence of subgrade with the characteristics of undocumented fill, these soils, in their present condition, possess a moderate to high risk to construction in terms of possible post-construction movement of the foundations and floor systems if no mitigation measures are employed. These upper soils exhibited moderate compressibility upon introduction of water during the consolidation test. To minimize post- construction soil movement and provide uniform support for the proposed structures, it is recommended that the overexcavation and recompaction within the proposed building area be performed to a minimum depth of three (3) feet below existing grade or two (2) feet below proposed footing bottom, whichever is deeper. The overexcavation and recompaction should also extend laterally to a minimum of 5 feet beyond the outer edges of the proposed footings. Loose fill soils should be removed and replaced with properly moisture conditioned and compacted Engineered Fill. Success of the mitigation measures will depend on the thoroughness of the contractor in dealing with the soil conditions.

9.3.4 The near surface soils identified as part of our investigation are, generally, moist due to the absorption characteristics of the soil. Earthwork operations may encounter very moist unstable soils which may require removal to a stable bottom. Exposed native soils exposed as part of site grading operations shall not be allowed to dry out and should be kept continuously moist prior to placement of subsequent fill.

9.4 Materials for Fill

9.4.1 Excavated near surface silty sand soils generated from cut operations at the site are suitable for use as general Engineered Fill in structural areas, provided they do not contain deleterious matter, organic material, or rock material larger than 3 inches in maximum dimension.

9.4.2 Import soil intended for use as Non-Expansive Engineered Fill soil, shall be well-graded, slightly cohesive silty fine sand or sandy silt, with relatively impervious characteristics when compacted. A clean sand or very sandy soil is not acceptable for this purpose. A sandy soil will allow the surface water to drain into the expansive clayey soils below, which may result in unacceptable

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swelling. This material should be approved by the Engineer prior to use and should typically possess the soil characteristics summarized below in Table 9.4.2.

TABLE 9.4.2 NON-EXPANSIVE IMPORT FILL REQUIREMENTS

Minimum Percent Passing No. 200 Sieve 15

Maximum Percent Passing No. 200 Sieve 50

Maximum Particle Size 3"

Maximum Plasticity Index 15

Maximum CBC Expansion Index 20

9.4.3 The preferred materials specified for Non-Expansive Engineered Fill are suitable for most applications with the exception of exposure to erosion. Project site winterization and protection of exposed soils during the construction phase should be the sole responsibility of the Contractor, since they have complete control of the project site.

9.4.4 Environmental characteristics and corrosion potential of import soil materials should also be considered.

9.4.5 Proposed import materials should be sampled, tested, and approved by SALEM prior to its transportation to the site.

9.5 Grading

9.5.1 A representative of our firm should be present during all site clearing and grading operations to test and observe earthwork construction. This testing and observation is an integral part of our service as acceptance of earthwork construction is dependent upon compaction of the material and the stability of the material. The Geotechnical Engineer may reject any material that does not meet compaction and stability requirements. Further recommendations of this report are predicated upon the assumption that earthwork construction will conform to recommendations set forth in this section as well as other portions of this report.

9.5.2 A preconstruction conference should be held at the site prior to the beginning of grading operations with the owner, contractor, civil engineer and geotechnical engineer in attendance.

9.5.3 The site currently was majorly observed to support seasonal vegetation and mature trees. Boring B-2 (see attached Site Plan) encountered subgrade having characteristics of undocumented fill, at approximate depths of 2 to 5 feet. The location surrounding Boring B-2 should be further investigated during site grading to verify the extent of the fill subgrade. Site demolition activities shall include removal of all surface obstructions not intended to be incorporated into final site design. In addition, underground buried structures and/or utility lines encountered during demolition and construction should be properly removed and the resulting excavations

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backfilled with Engineered Fill. At the time of construction, it is recommended that any disturbed soils within previous building areas be removed and/or recompacted.

9.5.4 Site preparation should begin with removal of existing surface/subsurface structures, underground utilities (as required), any existing uncertified fill, and debris. Excavations or depressions resulting from site clearing operations, or other existing excavations or depressions, should be restored with Engineered Fill in accordance with the recommendations of this report.

9.5.5 Surface vegetation consisting of grasses and other similar vegetation should be removed by stripping to a sufficient depth to remove organic-rich topsoil. The upper 2 to 4 inches of the soils containing, vegetation, roots and other objectionable organic matter encountered at the time of grading should be stripped and removed from the surface. Deeper stripping may be required in localized areas. Where not to remain, existing trees should be removed and their root systems should be thoroughly cleared of root balls as well as isolated roots greater than ½-inch in diameter. The amount of soil lost or disturbed with removal will likely vary with the moisture conditions at the time of removal, soil type and the methods of removal. The root system removal will disturb a significant quantity of soil. In addition, debris materials shall be removed from areas of proposed improvements and stockpiled separately from excavated soil material. The stripped vegetation, asphalt and concrete materials will not be suitable for use as Engineered Fill or within 5 feet of building pads or within pavement areas. However, stripped topsoil may be stockpiled and reused in landscape or non-structural areas or exported from the site.

9.5.6 Structural building pad areas should be considered as areas extending a minimum of 5 feet horizontally beyond the outside dimensions of buildings, including footings and non-cantilevered overhangs carrying structural loads.

9.5.7 The upper soils encountered are identified primarily as sand clay. These upper soils exhibited moderate to high compressibility upon introduction of water during the consolidation test. To minimize post-construction soil movement and provide uniform support for the proposed structures, it is recommended that the overexcavation and recompaction within the proposed building area be performed to a minimum depth of three (3) feet below existing grade or two (2) feet below proposed footing bottom, whichever is deeper. The overexcavation and recompaction should also extend laterally to a minimum of 5 feet beyond the outer edges of the proposed footings. Loose fill soils should be removed and replaced with properly moisture conditioned and compacted Engineered Fill.

To minimize the potential soil movement, it is recommended that the upper 18 inches of soil beneath the required granular aggregate subbase within slab-on-grade and exterior flatwork areas consist of Non-Expansive Engineered Fill meeting the requirements of Section 9.4. As an alternative to the use of non-expansive soils, the upper 18 inches of soil supporting the slab areas may consist of cement and/or lime-treated clayey soils. The cement / lime-treated soils should be re-compacted to a minimum of 90 percent of maximum density. Preliminary application rate should be 4 percent by dry weight. The cement material should be Portland cement. The lime material should be Calcium Oxide, commonly known as quick lime. The clayey soils should be at or above optimum moisture during the mixing operations. Any consideration of chemical treatment (e.g. lime) to facilitate construction would require

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additional soil chemistry evaluation and could affect landscape areas and some construction materials (e.g. aluminum).

Any undocumented fill materials or loose unsuitable materials encountered during grading should be removed and replaced with engineered fill. The actual depth of the removal and recompaction should be determined by our field representative during construction.

Success of the mitigation measures will depend on the thoroughness of the contractor in dealing with the soil conditions.

9.5.8 All Engineered Fill (including scarified ground surfaces and backfill) should be placed in lifts no thicker than will allow for adequate bonding and compaction (typically 6 to 8 inches in loose thickness).

9.5.9 Engineered Fill should be placed, moisture conditioned to 2 to 4 percent above optimum moisture content, and compacted to at least 95 percent of the maximum density (90% for cohesive soils).

9.5.10 An integral part of satisfactory fill placement is the stability of the placed lift of soil. If placed materials exhibit excessive instability as determined by a SALEM field representative, the lift will be considered unacceptable and shall be remedied prior to placement of additional fill material. Additional lifts should not be placed if the previous lift did not meet the required dry density or if soil conditions are not stable.

Prior to placement of non-expansive fill within the building areas, it is recommended that the upper 12 inches of native clayey soils be scarified, moisture-conditioned to 2 to 4 percent above optimum moisture content and compacted to 95 percent of the maximum density (90% for cohesive soils).

9.5.11 Within pavement areas, it is recommended that scarification, moisture conditioning and recompaction be performed to at least 12 inches below existing grade. In addition, the upper 12 inches of final pavement subgrade, whether completed at-grade, by excavation, or by filling, should be uniformly moisture-conditioned to 2 to 4 percent over optimum moisture content and compacted to at least 95 percent of the maximum density (90% for cohesive soils).

9.5.12 Final pavement subgrade should be finished to a smooth, unyielding surface. We further recommend proof-rolling the subgrade with a loaded water truck (or similar equipment with high contact pressure) to verify the stability of the subgrade prior to placing aggregate base.

9.5.13 The most effective site preparation alternatives will depend on site conditions prior to grading. We should evaluate site conditions and provide supplemental recommendations immediately prior to grading, if necessary.

9.5.14 The contractor is advised to anticipate that groundwater or seepage may adversely affect building pad construction. In addition, it is noted that groundwater and soil moisture conditions could be significantly different during the wet season (typically winter and spring) as surface soil becomes wet; perched groundwater conditions may develop. Grading during this time period will likely encounter wet materials resulting in possible excavation and fill placement difficulties. Project

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site winterization consisting of placement of aggregate base and protecting exposed soils during construction should be performed. If the construction schedule requires grading operations during the wet season, we can provide additional recommendations as conditions warrant.

9.5.15 Typical remedial measures include: discing and aerating the soil during dry weather; mixing the soil with dryer materials; removing and replacing the soil with an approved fill material or placement of crushed rocks or aggregate base material; or mixing the soil with an approved lime or cement product.

The most common remedial measure of stabilizing the bottom of the excavation due to wet soil condition is to reduce the moisture of the soil to near the optimum moisture content by having the subgrade soils scarified and aerated or mixed with drier soils prior to compacting. However, the drying process may require an extended period of time and delay the construction operation. To expedite the stabilizing process, crushed rock may be utilized for stabilization provided this method is approved by the owner for the cost purpose.

If the use of crushed rock is considered, it is recommended that the upper soft and wet soils be replaced by 6 to 24 inches of ¾-inch to 1-inch crushed rocks. The thickness of the rock layer depends on the severity of the soil instability. The recommended 6 to 24 inches of crushed rock material will provide a stable platform. It is further recommended that lighter compaction equipment be utilized for compacting the crushed rock. A layer of geofabric is recommended to be placed on top of the compacted crushed rock to minimize migration of soil particles into the voids of the crushed rock, resulting in soil movement. Although it is not required, the use of geogrid (e.g. Tensar BX 1100, BX 1200 or TX 160) below the crushed rock will enhance stability and reduce the required thickness of crushed rock necessary for stabilization.

Our firm should be consulted prior to implementing remedial measures to provide appropriate recommendations.

9.6 Shallow Foundations

9.6.1 The site is suitable for use of conventional shallow foundations consisting of continuous strip footings in combination with isolated spread footings bearing in properly compacted Engineered Fill.

9.6.2 It is recommended that continuous bearing wall footings to be utilized for the building have a minimum width of 12 inches, and a minimum embedment depth of 18 inches below lowest adjacent pad grade. Isolated column footings should have a minimum width of 24 inches, and a minimum embedment depth of 18 inches below lowest adjacent pad grade. Footing concrete should be placed into neat excavation. The footing bottoms shall be maintained free of loose and disturbed soil.

9.6.3 Footings proportioned as recommended above may be designed for the maximum allowable soil bearing pressures shown in the table below.

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Loading Condition Allowable Bearing

Dead Load Only 1,800 psf

Dead-Plus-Live Load 2,500 psf

Total Load, Including Wind or Seismic Loads 3,325 psf

9.6.4 For design purposes, total settlement of less than 1-inch may be assumed for shallow foundations. Differential settlement should be less than ½-inch, producing an angular distortion of 0.002. Most of the settlement is expected to occur during construction as the loads are applied. However, additional post-construction settlement may occur if the foundation soils are flooded or saturated. The footing excavations should not be allowed to dry out any time prior to pouring concrete.

9.6.5 Resistance to lateral footing displacement can be computed using an allowable coefficient of friction factor of 0.30 acting between the base of foundations and the supporting subgrade.

9.6.6 Lateral resistance for footings can alternatively be developed using an allowable equivalent fluid passive pressure of 300 pounds per cubic foot acting against the appropriate vertical native footing face. The frictional and passive resistance of the soil may be combined provided that a 50% reduction of the frictional resistance factor is used in determining the total lateral resistance.

9.6.7 Minimum reinforcement for continuous footings should consist of four No. 4 steel reinforcing bars; two placed near the top of the footing and two near the bottom. Reinforcement for spread footings should be designed by the project structural engineer.

9.6.8 Underground utilities running parallel to footings should not be constructed in the zone of influence of footings. The zone of influence may be taken to be the area beneath the footing and within a 1:1 plane extending out and down from the bottom edge of the footing.

9.6.9 The foundation subgrade should be sprinkled as necessary to maintain a moist condition without significant shrinkage cracks as would be expected in any concrete placement. Prior to placing rebar reinforcement, foundation excavations should be evaluated by a representative of SALEM for appropriate support characteristics and moisture content. Moisture conditioning may be required for the materials exposed at footing bottom, particularly if foundation excavations are left open for an extended period.

9.7 Concrete Slabs-on-Grade

9.7.1 Slab thickness and reinforcement should be determined by the structural engineer based on the anticipated loading. We recommend that non-structural slabs-on-grade be at least 5 inches thick and underlain by 6 inches of compacted granular aggregate subbase material compacted to at least 95% relative compaction.

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9.7.2 Granular aggregate subbase material shall conform to ASTM D-2940, Latest Edition (Table 1, bases) with at least 95 percent passing a 1½-inch sieve and not more than 8% passing a No. 200 sieve to prevent capillary moisture rise.

9.7.3 We recommend reinforcing slabs, at a minimum, with No. 3 reinforcing bars placed 18 inches on center, each way.

9.7.4 Slabs subject to structural loading may be designed utilizing a modulus of subgrade reaction K of 180 pounds per square inch per inch (assuming a minimum of 24-inches of non-expansive import fill below slabs). The K value was approximated based on inter-relationship of soil classification and bearing values (Portland Cement Association, Rocky Mountain Northwest).

9.7.5 The spacing of crack control joints should be designed by the project structural engineer. In order to regulate cracking of the slabs, we recommend that full depth construction joints or control joints be provided at a maximum spacing of 12 feet in each direction for 5-inch thick slabs and 10 feet for 4-inch thick slabs.

9.7.6 Crack control joints should extend a minimum depth of one-fourth the slab thickness and should be constructed using saw-cuts or other methods as soon as practical after concrete placement. The exterior floors should be poured separately in order to act independently of the walls and foundation system.

9.7.7 It is recommended that the utility trenches within the structure be compacted, as specified in our report, to minimize the transmission of moisture through the utility trench backfill. Special attention to the immediate drainage and irrigation around the structures is recommended.

9.7.8 Exterior finish grades should be sloped at a minimum of 1 to 1½ percent away from all interior slab areas to preclude ponding of water adjacent to the structures and should be maintained throughout the life of the structure. Ponding of water should not be allowed adjacent to the structure. Over-irrigation within landscaped areas adjacent to the structure should not be performed. In addition, ventilation of the structure is recommended to reduce the accumulation of interior moisture.

9.7.9 Moisture within the structure may be derived from water vapors, which were transformed from the moisture within the soils. This moisture vapor penetration can affect floor coverings and produce mold and mildew in the structure. To minimize moisture vapor intrusion, it is recommended that a vapor retarder be installed in accordance with manufacturer’s recommendations and/or ASTM guidelines, whichever is more stringent.

9.7.10 In areas where it is desired to reduce floor dampness where moisture-sensitive coverings are anticipated, construction should have a suitable waterproof vapor retarder (a minimum of 15 mils thick polyethylene vapor retarder sheeting, Raven Industries “VaporBlock 15, Stego Industries 15 mil “StegoWrap” or W.R. Meadows Sealtight 15 mil “Perminator”) incorporated into the floor slab design. The water vapor retarder should be decay resistant material complying with ASTM E96 not exceeding 0.04 perms, ASTM E154 and ASTM E1745 Class A. The vapor barrier should be placed between the concrete slab and the compacted granular aggregate subbase

Project No. 5-216-0552 - 16 -

material. The water vapor retarder (vapor barrier) should be installed in accordance with ASTM Specification E 1643-94.

9.7.11 The concrete maybe placed directly on vapor retarder. The vapor retarder should be inspected prior to concrete placement. Cut or punctured retarder should be repaired using vapor retarder material lapped 6 inches beyond damaged areas and taped.

9.7.12 The recommendations of this report are intended to reduce the potential for cracking of slabs due to soil movement. However, even with the incorporation of the recommendations presented herein, foundations, stucco walls, and slabs-on-grade may exhibit some cracking due to soil movement. This is common for project areas that contain expansive soils since designing to eliminate potential soil movement is cost prohibitive. The occurrence of concrete shrinkage cracks is independent of the supporting soil characteristics. Their occurrence may be reduced and/or controlled by limiting the slump of the concrete, proper concrete placement and curing, and by the placement of crack control joints at periodic intervals, in particular, where re-entrant slab corners occur.

9.7.13 Proper finishing and curing should be performed in accordance with the latest guidelines provided by the American Concrete Institute, Portland Cement Association, and ASTM.

9.8 Lateral Earth Pressures and Frictional Resistance

9.8.1 Active, at-rest and passive unit lateral earth pressures against footings and walls are summarized in the table below:

Native Soil Import Fill Lateral Pressure Conditions Equivalent Equivalent Fluid Pressure, pcf Fluid Pressure, pcf Active Pressure, Drained 40 35

At-Rest Pressure, Drained 55 50

Allowable Passive Pressure 300 350

Related Parameters

Allowable Coefficient of Friction 0.30 0.35

In-Place Soil Density (lbs/ft3) 119 125

9.8.2 Active pressure applies to walls, which are free to rotate. At-rest pressure applies to walls, which are restrained against rotation. The preceding lateral earth pressures assume sufficient drainage behind retaining walls to prevent the build-up of hydrostatic pressure. The top one-foot of adjacent subgrade should be deleted from the passive pressure computation.

9.8.3 The foregoing values of lateral earth pressures and frictional coefficients represent ultimate soil values and a safety factor consistent with the design conditions should be included in their usage.

Project No. 5-216-0552 - 17 -

9.8.4 For stability against lateral sliding, which is resisted solely by the passive pressure, we recommend a minimum safety factor of 1.5. 9.8.5 For stability against lateral sliding, which is resisted by the combined passive and frictional resistance, a minimum safety factor of 2.0 is recommended. 9.8.6 For lateral stability against seismic loading conditions, we recommend a minimum safety factor of 1.2. 9.8.7 For dynamic seismic lateral loading the following equation shall be used:

Dynamic Seismic Lateral Loading Equation

2 Dynamic Seismic Lateral Load = ⅜γKhH Where: γ = In-Place Soil Density (Section 9.8.1 above)

Kh = Horizontal Acceleration = ⅔PGAM (Section 9.2.1 above) H = Wall Height

9.9 Retaining Walls

9.9.1 Retaining and/or below grade walls should be drained with either perforated pipe encased in free- draining gravel or a prefabricated drainage system. The gravel zone should have a minimum width of 12 inches wide and should extend upward to within 12 inches of the top of the wall. The upper 12 inches of backfill should consist of native soils, concrete, asphaltic-concrete or other suitable backfill to minimize surface drainage into the wall drain system. The gravel should conform to Class II permeable materials graded in accordance with the current CalTrans Standard Specifications.

9.9.2 Prefabricated drainage systems, such as Miradrain®, Enkadrain®, or an equivalent substitute, are acceptable alternatives in lieu of gravel provided they are installed in accordance with the manufacturer’s recommendations. If a prefabricated drainage system is proposed, our firm should review the system for final acceptance prior to installation.

9.9.3 Drainage pipes should be placed with perforations down and should discharge in a non-erosive manner away from foundations and other improvements.

9.9.4 The top of the perforated pipe should be placed at or below the bottom of the adjacent floor slab or pavements. The pipe should be placed in the center line of the drainage blanket and should have a minimum diameter of 4 inches. Slots should be no wider than 1/8-inch in diameter, while perforations should be no more than ¼-inch in diameter.

9.9.5 If retaining walls are less than 6 feet in height, the perforated pipe may be omitted in lieu of weep holes on 4 feet maximum spacing. The weep holes should consist of 4-inch diameter holes (concrete walls) or unmortared head joints (masonry walls) and placed no higher than 18 inches above the lowest adjacent grade. Two 8-inch square overlapping patches of geotextile fabric

Project No. 5-216-0552 - 18 -

(conforming to the CalTrans Standard Specifications for "edge drains") should be affixed to the rear wall opening of each weep hole to retard soil piping.

9.9.6 During grading and backfilling operations adjacent to any walls, heavy equipment should not be allowed to operate within a lateral distance of 5 feet from the wall, or within a lateral distance equal to the wall height, whichever is greater, to avoid developing excessive lateral pressures. Within this zone, only hand operated equipment ("whackers," vibratory plates, or pneumatic compactors) should be used to compact the backfill soils.

9.10 Temporary Excavations

9.10.1 We anticipate that the majority of the site soils will be classified as Cal-OSHA “Type C” soil when encountered in excavations during site development and construction. Excavation sloping, benching, the use of trench shields, and the placement of trench spoils should conform to the latest applicable Cal-OSHA standards. The contractor should have a Cal-OSHA-approved “competent person” onsite during excavation to evaluate trench conditions and make appropriate recommendations where necessary.

9.10.2 It is the contractor’s responsibility to provide sufficient and safe excavation support as well as protecting nearby utilities, structures, and other improvements which may be damaged by earth movements. All onsite excavations must be conducted in such a manner that potential surcharges from existing structures, construction equipment, and vehicle loads are resisted. The surcharge area may be defined by a 1:1 projection down and away from the bottom of an existing foundation or vehicle load.

9.10.3 Temporary excavations and slope faces should be protected from rainfall and erosion. Surface runoff should be directed away from excavations and slopes.

9.10.4 Open, unbraced excavations in undisturbed soils should be made according to the slopes presented in the following table:

RECOMMENDED EXCAVATION SLOPES

Depth of Excavation (ft) Slope (Horizontal : Vertical)

0-5 1:1 5-10 1½:1 10-15 2:1

9.10.5 If, due to space limitation, excavations near existing structures are performed in a vertical position, braced shorings or shields may be used for supporting vertical excavations. Therefore, in order to comply with the local and state safety regulations, a properly designed and installed shoring system would be required to accomplish planned excavations and installation. A Specialty Shoring Contractor should be responsible for the design and installation of such a shoring system during construction.

Project No. 5-216-0552 - 19 -

9.10.6 Braced shorings should be designed for a maximum pressure distribution of 25H, (where H is the depth of the excavation in feet). The foregoing does not include excess hydrostatic pressure or surcharge loading. Fifty percent of any surcharge load, such as construction equipment weight, should be added to the lateral load given herein. Equipment traffic should concurrently be limited to an area at least 3 feet from the shoring face or edge of the slope.

9.10.7 The excavation and shoring recommendations provided herein are based on soil characteristics derived from the borings within the area. Variations in soil conditions will likely be encountered during the excavations. SALEM Engineering Group, Inc. should be afforded the opportunity to provide field review to evaluate the actual conditions and account for field condition variations not otherwise anticipated in the preparation of this recommendation. Slope height, slope inclination, or excavation depth should in no case exceed those specified in local, state, or federal safety regulation, (e.g. OSHA) standards for excavations, 29 CFR part 1926, or Assessor’s regulations.

9.11 Underground Utilities

9.11.1 Underground utility trenches should be backfilled with properly compacted material. The material excavated from the trenches should be adequate for use as backfill provided it does not contain deleterious matter, vegetation or rock larger than 3 inches in maximum dimension. Trench backfill should be placed in loose lifts not exceeding 8 inches and compacted to at least 90% relative compaction at or above optimum moisture content. The upper 12 inches of trench backfill within asphalt or concrete paved areas shall be moisture conditioned to near 2 to 4 percent over optimum moisture content and compacted to at least 95% relative compaction.

9.11.2 Bedding and pipe zone backfill typically extends from the bottom of the trench excavations to approximately 6 to 12 inches above the crown of the pipe. Pipe bedding and backfill material should conform to the requirements of the governing utility agency.

9.11.3 It is suggested that underground utilities crossing beneath new or existing structures be plugged at entry and exit locations to the building or structure to prevent water migration. Trench plugs can consist of on-site clay soils, if available, or sand cement slurry. The trench plugs should extend 2 feet beyond each side of individual perimeter foundations.

9.11.4 The contractor is responsible for removing all water-sensitive soils from the trench regardless of the backfill location and compaction requirements. The contractor should use appropriate equipment and methods to avoid damage to the utilities and/or structures during fill placement and compaction.

9.12 Surface Drainage

9.12.1 Proper surface drainage is critical to the future performance of the project. Uncontrolled infiltration of irrigation excess and storm runoff into the soils can adversely affect the performance of the planned improvements. Saturation of a soil can cause it to lose internal shear strength and increase its compressibility, resulting in a change to important engineering properties. Proper drainage should be maintained at all times.

Project No. 5-216-0552 - 20 -

9.12.2 All site drainage should be collected and transferred away from improvements in non-erosive drainage devices. Drainage should not be allowed to pond anywhere on the site, and especially not against any foundations or retaining walls. Drainage should not be allowed to flow uncontrolled over any descending slope. The proposed structures should be provided with roof gutters. Discharge from downspouts, roof drains and scuppers are not permitted onto unprotected soils within five feet of the building perimeter. Planters which are located adjacent to foundations should be sealed or properly drained to prevent moisture intrusion into the materials providing foundation support. Landscape irrigation within 5 feet of the building perimeter footings should be kept to a minimum to just support vegetative life.

9.12.3 Positive site drainage should be provided away from structures, pavement, and the tops of slopes to swales or other controlled drainage structures. The building pad and pavement areas should be final graded such that water is not allowed to pond. Final soil grade should slope a minimum of 2% away from structures.

9.13 Pavement Design

9.13.1 Based upon the site soil conditions and the R-Value test results, the table below presents minimum sections required by Dollar General are recommended for flexible asphaltic concrete pavement design. Two Resistance Value (R-Value) tests RV-1 & RV-2 were performed at locations of Borings B-7 and B-9, respectively, corresponding to areas proposed for pavements. The RV-1 and RV-2 had tests results of 42 and 29, respectively. An R-value of 29 was utilized for design of project pavements.

9.13.2 The pavement design recommendations provided herein are based on the State of California Department of Transportation (CALTRANS) design manual. The asphaltic concrete (flexible pavement) is based on a 20-year pavement life utilizing 1200 passenger vehicles, 10 single unit trucks, and 2 multi-unit trucks. The following table shows the recommended pavement sections for various traffic indices.

TABLE 9.13.2.1 ASPHALT CONCRETE PAVEMENT THICKNESSES

Aggregate Base Asphalt Asphalt Course Total Pavement Traffic Area Course (ABC) Course Binder Surface Section (inches) (inches) (inches) (inches) Standard Duty 6.0 1.5 1.5 9.0 TI=5 Heavy Duty 7.5 2.0 2.0 11.5 TI=6 (1) Recommendation based on SALEM’s engineers and/or technician being retained to provide the recommended laboratory testing and observation and testing during construction. (2) This design is based on an R-Value of at least 29 for structural fill similar to the encountered site soils at the site. A laboratory R-Value test may be performed prior to construction (note: test requires 2 to 3 days to perform) that may reduce recommended pavement sections. SALEM should be retained to perform an alternate pavement design if more suitable structural fill soils are used.

Project No. 5-216-0552 - 21 -

The following recommendations are for light-duty and heavy-duty Portland Cement Concrete pavement sections. TABLE 9.13.2.2 PORTLAND CEMENT CONCRETE PAVEMENT THICKNESSES

Aggregate Base Course Portland Cement Total Pavement Traffic Area (ABC) (inches) Concrete (inches) Section (inches) Standard Duty 6.0 4.0" 10.0" TI=5 Heavy Duty 6.0 5.5" 11.5" TI=6 (3) Recommendation based on SALEM’s engineers and/or technician being retained to provide the recommended laboratory testing and observation and testing during construction. (4) This design is based on an R-Value of at least 29 for structural fill similar to the encountered site soils at the site. A laboratory R-Value test may be performed prior to construction (note: test requires 2 to 3 days to perform) that may reduce recommended pavement sections. SALEM should be retained to perform an alternate pavement design if more suitable structural fill soils are used. (5) Recommendation based on SALEM’s engineers be retained to prepare a comprehensive concrete jointing plan and SALEM’s engineer and/or engineering technician observation and testing during construction. (6) Recommendation based on 4,000-psi (570 psi flexural strength) air-entrained Portland cement concrete with micro-fiber overlying a properly prepared/approved soil subgrade. All non-curbed and/or confined outside pavement edges must be thickened 2 inches to increase edge support. The store entrance apron area, dumpster pad and dumpster approach area should be a minimum 7 inches thick. Jointed concrete panels that have a length to width ratio greater than 1.25 shall include crack control reinforcement consisting of #4 rebar placed 24 inches on-center both directions at approximately 2 inches below the finished concrete surface. The crack control reinforcement should not overlap into adjacent concrete panels.

10. PLAN REVIEW, CONSTRUCTION OBSERVATION AND TESTING

10.1 Plan and Specification Review

10.1.1 SALEM should review the project plans and specifications prior to final design submittal to assess whether our recommendations have been properly implemented and evaluate if additional analysis and/or recommendations are required.

10.2 Construction Observation and Testing Services

10.2.1 The recommendations provided in this report are based on the assumption that we will continue as Geotechnical Engineer of Record throughout the construction phase. It is important to maintain continuity of geotechnical interpretation and confirm that field conditions encountered are similar to those anticipated during design. If we are not retained for these services, we cannot assume any responsibility for others interpretation of our recommendations, and therefore the future performance of the project.

10.2.2 SALEM should be present at the site during site preparation to observe site clearing, preparation of exposed surfaces after clearing, and placement, treatment and compaction of fill material.

10.2.3 SALEM's observations should be supplemented with periodic compaction tests to establish substantial conformance with these recommendations. Moisture content of footings and slab subgrade should be tested immediately prior to concrete placement. SALEM should observe foundation excavations prior to placement of reinforcing steel or concrete to assess whether the

Project No. 5-216-0552 - 22 -

actual bearing conditions are compatible with the conditions anticipated during the preparation of this report.

11. LIMITATIONS AND CHANGED CONDITIONS

The analyses and recommendations submitted in this report are based upon the data obtained from the test borings drilled at the approximate locations shown on the Site Plan, Figure 2. The report does not reflect variations which may occur between borings. The nature and extent of such variations may not become evident until construction is initiated.

If variations then appear, a re-evaluation of the recommendations of this report will be necessary after performing on-site observations during the excavation period and noting the characteristics of such variations. The findings and recommendations presented in this report are valid as of the present and for the proposed construction. If site conditions change due to natural processes or human intervention on the property or adjacent to the site, or changes occur in the nature or design of the project, or if there is a substantial time lapse between the submission of this report and the start of the work at the site, the conclusions and recommendations contained in our report will not be considered valid unless the changes are reviewed by SALEM and the conclusions of our report are modified or verified in writing.

The validity of the recommendations contained in this report is also dependent upon an adequate testing and observations program during the construction phase. Our firm assumes no responsibility for construction compliance with the design concepts or recommendations unless we have been retained to perform the on- site testing and review during construction. SALEM has prepared this report for the exclusive use of the owner and project design consultants.

SALEM does not practice in the field of corrosion engineering. It is recommended that a qualified corrosion engineer be consulted regarding protection of buried steel or ductile iron piping and conduit or, at a minimum, that manufacturer’s recommendations for corrosion protection be closely followed. Further, a corrosion engineer may be needed to incorporate the necessary precautions to avoid premature corrosion of concrete slabs and foundations in direct contact with native soil. The importation of soil and or aggregate materials to the site should be screened to determine the potential for corrosion to concrete and buried metal piping.

The report has been prepared in accordance with generally accepted geotechnical engineering practices in the area. No other warranties, either express or implied, are made as to the professional advice provided under the terms of our agreement and included in this report.

If you have any questions, or if we may be of further assistance, please do not hesitate to contact our office at (559) 271-9700.

Project No. 5-216-0552 - 23 -

Respectfully Submitted,

SALEM ENGINEERING GROUP, INC.

Shaun Reich, EIT Geotechnical Project Engineer Central / Northern California

R. Sammy Salem, PE, GE Principal Managing Engineer RCE 52762 / RGE 2549

Project No. 5-216-0552 - 24 -

SITE LOCATION

Source Image: U.S. Geological Survey, Yreka, Calif. 7.5’ Quadrangle, Provisional Edition 1984 SCALE: DATE: VICINITY MAP NOT TO SCALE 06/2016 GEOTECHNICAL ENGINEERING INVESTIGATION DRAWN BY: APPROVED BY: Proposed Dollar General Retail Store AW SR Montague Road east of N. Main Street PROJECT NO. FIGURE NO. Yreka, California 5-216-0552 1

B-4

B-6 B-5

B-1 B-2 B-3

B-8

B-9 RV-1 B-7 RV-2

N

SCALE: DATE: LEGEND:

SITE PLAN NOT TO SCALE 06/2016 B - 1 Soil Boring Location GEOTECHNICAL ENGINEERING INVESTIGATION DRAWN BY: APPROVED BY: Proposed Dollar General Retail Store AW SR RV - 1 RV Location

Montague Road east of N. Main Street PROJECT NO. FIGURE NO. All Locations Approximate Yreka, California 5-216-0552 2

APPENDIX A FIELD EXPLORATION

Fieldwork for our investigation was conducted on June 7, 2016 and included a site visit, subsurface exploration, and soil sampling. The locations of the exploratory borings are shown on the Site Plan, Figure 2. Boring logs for our exploration are presented in figures following the text in this appendix. Borings were located in the field using existing reference points. Therefore, actual boring locations may deviate slightly.

In general, our borings were performed using a truck-mounted CME-45C drill rig equipped with a 4-inch diameter solid flight and 8-inch hollow stem augers. Sampling in the borings was accomplished using a hydraulic 140-pound hammer with a 30-inch drop. Samples were obtained with a 3-inch outside-diameter (OD), split spoon (California Modified) sampler, and a 2-inch OD, Standard Penetration Test (SPT) sampler. The number of blows required to drive the sampler the last 12 inches (or fraction thereof) of the 18-inch sampling interval were recorded on the boring logs. The blow counts shown on the boring logs should not be interpreted as standard SPT “N” values; corrections have not been applied. The borings were backfilled with grout after completion of the drilling. The boring was permitted and backfilled with bentonite grout in accordance with Siskiyou County requirements after completion of the drilling..

Subsurface conditions encountered in the exploratory borings were visually examined, classified and logged in general accordance with the American Society for Testing and Materials (ASTM) Practice for Description and Identification of Soils (Visual-Manual Procedure D2488). This system uses the Unified Soil Classification System (USCS) for soil designations. The logs depict soil and geologic conditions encountered and depths at which samples were obtained. The logs also include our interpretation of the conditions between sampling intervals. Therefore, the logs contain both observed and interpreted data. We determined the lines designating the interface between soil materials on the logs using visual observations, drill rig penetration rates, excavation characteristics and other factors. The transition between materials may be abrupt or gradual. Where applicable, the field logs were revised based on subsequent laboratory testing.

Project No. 5-216-0552 A-1 Unified Soil Classification System

Major Divisions Letter Symbol Description Well-graded gravels and gravel-sand mixtures, GW Clean little or no fines. Gravels Poorly-graded gravels and gravel-sand mixtures, GP little or no fines.

Gravels GM Silty gravels, gravel-sand-silt mixtures.

No. 4 sieveNo. Gravels With Fines

More than ½ coarse GC Clayey gravels, gravel-sand-clay mixtures.

fraction retained on the Well-graded sands and gravelly sands, little or no SW fines. Clean Sands Poorly-graded sands and gravelly sands, little or no SP Coarse-grained Soils fines.

Sands SM Silty sands, sand-silt mixtures Sands With Fines Clayey sands, sandy-clay mixtures.

More than ½ retained 200 Sieve the on No. More than ½ passing SC

through the No. 4 sieve Inorganic silts, very fine sands, rock flour, silty or ML clayey fine sands. Silts and Clays Inorganic clays of low to medium plasticity, gravelly Liquid Limit less than CL clays, sandy clays, silty clays, lean clays. 50% OL Organic clays of medium to high plasticity. Inorganic silts, micaceous or diatomaceous fines MH sands or silts, elastic silts.

No. 200 Sieve No. Silts and Clays

Fine-grained Soils Liquid Limit greater than CH Inorganic clays of high plasticity, fat clays. 50% OH Organic clays of medium to high plasticity.

More than ½ passing through the

Highly Organic Soils PT Peat, muck, and other highly organic soils.

Consistency Classification

Granular Soils Cohesive Soils Description - Blows Per Foot (Corrected) Description - Blows Per Foot (Corrected)

MCS SPT MCS SPT Very loose <5 <4 Very soft <3 <2 Loose 5 ¯ 15 4 ¯ 10 Soft 3 ¯ 5 2 ¯ 4 Medium dense 16 ¯ 40 11 ¯ 30 Firm 6 ¯ 10 5 ¯ 8 9 15 Dense 41 ¯ 65 31 ¯ 50 Stiff 11 ¯ 20 ¯ 16 30 Very dense >65 >50 Very Stiff 21 ¯ 40 ¯ >30 Hard >40

MCS = Modified California Sampler SPT = Standard Penetration Test Sampler Boring No. B-1

Project: Proposed Dollar General Retail Store Project No: 5-216-0552 Client: Cross Development LLC Figure No.: A-1 Location: Montague Road east of N. Main Street, Yreka, CA Logged By: SMG Grnd. Surf. Elev. (Ft. MSL) N/A Initial: 18 Feet Depth to Water> At Completion: 18 Feet SUBSURFACE PROFILE SAMPLE

Penetration Test Description

20 40 60 80

Ground Surface 0 Clayey SAND (SC) with Gravel Medium dense; brown; moist; coarse to fine- grained with fine to medium gravel; with silt. 114.8 8.2 MCS 26

5 Grades as above. 120.0 8.1 MCS 18

Sandy CLAY (CL) Stiff; brown; moist; medium to fine-grained 10 sand. 108.5 18.0 MCS 11

15 Grades as above; soft. -- 19.1 SPT 5

Clayey GRAVEL (GC) Very dense; brown; wet; coarse to fine- grained. 20 -- 16.0 SPT 50 End of Borehole

25

Drill Method: Solid Flight Auger Drill Date: 6/7/2016 Drill Rig: CME 45 Borehole Size: 4 Inches Driller: Salem Engineering Group, Inc. Hammer Type: Auto Trip Sheet: 1 of 1 Weight & Drop: 140 Ibs/30 in. Boring No. B-2

Project: Proposed Dollar General Retail Store Project No: 5-216-0552 Client: Cross Development LLC Figure No.: A-2 Location: Montague Road east of N. Main Street, Yreka, CA Logged By: SMG Grnd. Surf. Elev. (Ft. MSL) N/A Initial: 18 Feet Depth to Water> At Completion: 18 Feet SUBSURFACE PROFILE SAMPLE

Penetration Test Description

20 40 60 80

Ground Surface 0 Clayey SAND (SC) with Gravel [FILL] Loose to medium dense; brown; moist; coare to fine-grained with fine to medium gravel; 114.1 6.4 MCS 14 with silt.

Clayey Sandy Gravel (GP/GC) [FILL] Loose to medium dense; brown; moist; 5 128.8 3.1 MCS 5 coarse to fine grained with fine to medium gravel; with silt.

Clayey SAND (SC) with Gravel Loose to medium dense; brown; moist; 10 Gradescoarse to as fine-grained above; medium grave. dense. 99.0 8.1 MCS 16

CLAY (CL) with Gravel Firm; dark brown; moist; coarse to fine- 15 grained gravel. -- 9.9 SPT 6

Sandy GRAVEL (GP) with Clay Loose to medium dense; brown; wet; coarse to fine-grained; with some cobbles. 20 -- 13.7 SPT 7 End of Borehole

25

Drill Method: Hollow Stem Auger Drill Date: 6/7/2016 Drill Rig: CME 45 Borehole Size: 8 Inches Driller: Salem Engineering Group, Inc. Hammer Type: Auto Trip Sheet: 1 of 1 Weight & Drop: 140 Ibs/30 in. Boring No. B-3

Project: Proposed Dollar General Retail Store Project No: 5-216-0552 Client: Cross Development LLC Figure No.: A-3 Location: Montague Road east of N. Main Street, Yreka, CA Logged By: SMG Grnd. Surf. Elev. (Ft. MSL) N/A Initial: 18 Feet Depth to Water> At Completion: 18 Feet SUBSURFACE PROFILE SAMPLE

Penetration Test Description

20 40 60 80

Ground Surface 0 Clayey SAND (SC) with Gravel Medium dense; brown; moist; coarse to fine- grained with fine to medium gravel. 112.8 7.6 MCS 19

Sandy CLAY (CL) with Gravel Very stiff; brown; moist; coarse to fine- 5 120.7 11.8 MCS 28 grained gravel.

Sandy CLAY (CL) Stiff; brown; moist; medium to fine-grained 10 sand. 107.8 18.8 MCS 14

15 Grades as above; stiff. -- 11.7 SPT 11

Clayey GRAVEL (GC) Medium dense; brown; wet; coarse to fine- grained. 20 -- 13.7 SPT 16 End of Borehole

25

Drill Method: Solid Flight Auger Drill Date: 6/7/2016 Drill Rig: CME 45 Borehole Size: 4 Inches Driller: Salem Engineering Group, Inc. Hammer Type: Auto Trip Sheet: 1 of 1 Weight & Drop: 140 Ibs/30 in. Boring No. B-4

Project: Proposed Dollar General Retail Store Project No: 5-216-0552 Client: Cross Development LLC Figure No.: A-4 Location: Montague Road east of N. Main Street, Yreka, CA Logged By: SMG Grnd. Surf. Elev. (Ft. MSL) N/A Initial: 18 Feet Depth to Water> At Completion: 18 Feet SUBSURFACE PROFILE SAMPLE

Penetration Test Description

20 40 60 80

Ground Surface 0 SAND with Silt (SP-SM) with Clay and Gravel Medium dense; brown; moist; coarse to fine- 110.2 5.3 MCS 19 grained with fine to medium gravel; with silt.

5 Grades as above. 112.8 7.1 MCS 28

Sandy CLAY (CL) Stiff; brown; moist; medium to fine-grained 10 sand. 115.9 16.7 MCS 14

15 Grades as above; stiff. 114.5 13.4 MCS 11

Clayey GRAVEL (GC) Medium dense; brown; wet; coarse to fine- grained. 20 -- 13.2 SPT 16 End of Borehole

25

Drill Method: Hollow Stem Auger Drill Date: 6/7/2016 Drill Rig: CME 45 Borehole Size: 8 Inches Driller: Salem Engineering Group, Inc. Hammer Type: Auto Trip Sheet: 1 of 1 Weight & Drop: 140 Ibs/30 in. Boring No. B-5

Project: Proposed Dollar General Retail Store Project No: 5-216-0552 Client: Cross Development LLC Figure No.: A-5 Location: Montague Road east of N. Main Street, Yreka, CA Logged By: SMG Grnd. Surf. Elev. (Ft. MSL) N/A Initial: 18 Feet Depth to Water> At Completion: 18 Feet SUBSURFACE PROFILE SAMPLE

Penetration Test Description

20 40 60 80

Ground Surface 0 Clayey SAND (SC) with Gravel Medium dense; brown; moist; medium to fine-grained; with some cobble and fine to 103.3 8.1 MCS 20 medium gravel.

5 Grades as above. 117.4 6.1 MCS 22

CLAY (CL) Firm; dark brown; moist; with coarse to fine- 10 grained gravel. 95.9 23.9 MCS 10

Sandy CLAY (CL) Soft; dark brown; moist; medium to fine- 15 grained sand. -- 25.1 SPT 3

Clayey GRAVEL (GC) Loose; brown; wet; coarse to fine-grained. 20 118.3 13.8 MCS 13 GRAVEL (GP) with Sand Very dense; brown; wet; coarse to fine- grained; with some cobbles.

25 126.3 10.0 SPT 50

Refusal @ 27End Feet of Due Borehole to Competent Bedrock.

30

Drill Method: Hollow Stem Auger Drill Date: 6/7/2016 Drill Rig: CME 45 Borehole Size: 8 Inches Driller: Salem Engineering Group, Inc. Hammer Type: Auto Trip Sheet: 1 of 1 Weight & Drop: 140 Ibs/30 in. Boring No. B-6

Project: Proposed Dollar General Retail Store Project No: 5-216-0552 Client: Cross Development LLC Figure No.: A-6 Location: Montague Road east of N. Main Street, Yreka, CA Logged By: SMG Grnd. Surf. Elev. (Ft. MSL) N/A Initial: None Depth to Water> At Completion: None SUBSURFACE PROFILE SAMPLE

Penetration Test Description

20 40 60 80

Ground Surface 0 Clayey SAND (SC) with Gravel Medium dense; brown; moist; coarse to fine- grained; with fine to medium grained gravel; some cobble.

126.3 1.7 MCS 20

5 Grades as above. -- 6.7 MCS 14

End of Borehole

10

Drill Method: Hollow Stem Auger Drill Date: 6/7/2016 Drill Rig: CME 45 Borehole Size: 8 Inches Driller: Salem Engineering Group, Inc. Hammer Type: Auto Trip Sheet: 1 of 1 Weight & Drop: 140 Ibs/30 in. Boring No. B-7

Project: Proposed Dollar General Retail Store Project No: 5-216-0552 Client: Cross Development LLC Figure No.: A-7 Location: Montague Road east of N. Main Street, Yreka, CA Logged By: SMG Grnd. Surf. Elev. (Ft. MSL) N/A Initial: None Depth to Water> At Completion: None SUBSURFACE PROFILE SAMPLE

Penetration Test Description

20 40 60 80

Ground Surface 0 Clayey SAND (SC) with Gravel Loose to medium dense; brown; moist; coarse to fine-grained with fine to medium grained gravel.

112.3 13.2 MCS 11

5 Grades as above. 126.4 11.6 MCS 16

End of Borehole

10

Drill Method: Solid Flight Auger Drill Date: 6/7/2016 Drill Rig: CME 45 Borehole Size: 4 Inches Driller: Salem Engineering Group, Inc. Hammer Type: Auto Trip Sheet: 1 of 1 Weight & Drop: 140 Ibs/30 in. Boring No. B-8

Project: Proposed Dollar General Retail Store Project No: 5-216-0552 Client: Cross Development LLC Figure No.: A-8 Location: Montague Road east of N. Main Street, Yreka, CA Logged By: SMG Grnd. Surf. Elev. (Ft. MSL) N/A Initial: None Depth to Water> At Completion: None SUBSURFACE PROFILE SAMPLE

Penetration Test Description

20 40 60 80

Ground Surface 0 Clayey SAND (SC) with Gravel Medium dense; brown; moist; coarse to fine- grained with fine to medium gravel.

98.9 10.6 MCS 21

5 Grades as above. -- 4.2 MCS 15

End of Borehole

10

Drill Method: Hollow Stem Auger Drill Date: 6/7/2016 Drill Rig: CME 45 Borehole Size: 8 Inches Driller: Salem Engineering Group, Inc. Hammer Type: Auto Trip Sheet: 1 of 1 Weight & Drop: 140 Ibs/30 in. Boring No. B-9

Project: Proposed Dollar General Retail Store Project No: 5-216-0552 Client: Cross Development LLC Figure No.: A-9 Location: Montague Road east of N. Main Street, Yreka, CA Logged By: SMG Grnd. Surf. Elev. (Ft. MSL) N/A Initial: None Depth to Water> At Completion: None SUBSURFACE PROFILE SAMPLE

Penetration Test Description

20 40 60 80

Ground Surface 0 Clayey SAND (SC) with Gravel Loose to medium dense; brown; moist; coarse to fine-grained with fine to medium gravel.

102.6 8.5 MCS 11

5 Grades as above. 110.9 8.1 MCS 10

End of Borehole

10

Drill Method: Hollow Stem Auger Drill Date: 6/7/2016 Drill Rig: CME 45 Borehole Size: 8 Inches Driller: Salem Engineering Group, Inc. Hammer Type: Auto Trip Sheet: 1 of 1 Weight & Drop: 140 Ibs/30 in.

APPENDIX B LABORATORY TESTING

Laboratory tests were performed in accordance with generally accepted test methods of the American Society for Testing and Materials (ASTM), Caltrans, or other suggested procedures. Selected samples were tested for in-situ dry density and moisture content, corrosivity, consolidation, shear strength, R-value, plasticity index, expansion index, optimum moisture / maximum density, and grain size distribution. The results of the laboratory tests are summarized in the following figures.

Project No. 5-216-0552 B-1 CONSOLIDATION - PRESSURE TEST DATA ASTM D 2435

LOAD IN KIPS PER SQUARE FOOT

0.1 0.2 0.3 0.4 0.5 0.6 0.8 1.0 2.0 3.0 4.0 5.0 6.0 8.0 10.0 20 30 40 50 60 80 100.0 0

2 Moisture Content: 7.1% Dry Density: 112.8 pcf 4 SOAKED VOLUME CHANGEVOLUME IN PERCENT 6

COLLAPSE 8

10

12

CONSOLIDATION 14

16

18 REBOUND 20 Prop. Dollar_General_Yreka_CA Project Number: 5-216-0552 Boring: B-4 @ 5' CONSOLIDATION - PRESSURE TEST DATA ASTM D 2435

LOAD IN KIPS PER SQUARE FOOT

0.1 0.2 0.3 0.4 0.5 0.6 0.8 1.0 2.0 3.0 4.0 5.0 6.0 8.0 10.0 20 30 40 50 60 80 100.0 0

2 Moisture Content: 8.1% SOAKED Dry Density: 103.3 pcf 4 VOLUME CHANGEVOLUME IN PERCENT 6 COLLAPSE

8

10

CONSOLIDATION 12

14

16

18 REBOUND

20 Prop. Dollar_General_Yreka_CA Project Number: 5-216-0552 Boring: B-5 @ 2' SHEAR STRENGTH DIAGRAM (DIRECT SHEAR) ASTM D - 3080

5 Prop. Dollar_General_Yreka_CA

Project Number: 5-216-0552 4

SHEAR STRESS, Boring: B-2 @ 5' Soil Type: Sandy Silt, some clay and gravel

3

Friction Angle: 34 degrees

KSF Cohesion: 425 psf

2

Moisture Content 3.1% 34o Dry Density 128.8 pcf 1

0 0 1 2 3 4 5 NORMAL STRESS, KSF

SHEAR STRENGTH DIAGRAM (DIRECT SHEAR) ASTM D - 3080

5 Prop. Dollar_General_Yreka_CA

Project Number: 5-216-0552 4

SHEAR STRESS, Boring: B-4 @ 2' Soil Type: SAND with Silt (SP-SM) with clay and gravel 3

Friction Angle: 34 degrees

KSF Cohesion: 245 psf

2

Moisture Content 5.3% 34o Dry Density 110.2 pcf 1

0 0 1 2 3 4 5 NORMAL STRESS, KSF

PARTICLE SIZE DISTRIBUTION DIAGRAM GRADATION TEST - ASTM C136 - U.S. Sieve Opening, inches U.S. Standard Sieve Number Hydrometer 2 1 1/2 4 8 16 30 50 100 200 1.5 3/4 3/8 100%

90%

80%

70%

60%

50%

Percent Passing 40%

30%

20%

10%

0% 100 10 1 0.1 0.01 0.001 0.0001 Grain Size (mm) Coarse Medium Gravel Fine Sand Silt Clay Colloids in Suspension Sand Sand

Prop. Dollar_General_Yreka_CA Boring: B-1 @ 2' DRY SIEVE ANALYSIS ASTM C136 (without Hydrometer)

Percent Sieve Size Particle Size, mm Passing

1 1/2-in. 37.5 100.0%

1-in. 25 100.0%

3/4-in. 19 100.0%

1/2-in. 12.5 100.0%

3/8-in. 9.5 80.1%

No. 4 4.75 64.3%

No. 8 2.36 51.1%

No. 16 1.18 40.4%

No. 30 0.6 31.9%

No. 50 0.3 24.4%

No. 100 0.15 18.5% No. 200 0.075 14.24%

Prop. Dollar_General_Yreka_CA Boring: B-1 @ 2' PARTICLE SIZE DISTRIBUTION DIAGRAM GRADATION TEST - ASTM C136 - U.S. Sieve Opening, inches U.S. Standard Sieve Number Hydrometer 2 1 1/2 4 8 16 30 50 100 200 1.5 3/4 3/8 100%

90%

80%

70%

60%

50%

Percent Passing 40%

30%

20%

10%

0% 100 10 1 0.1 0.01 0.001 0.0001 Grain Size (mm) Coarse Medium Gravel Fine Sand Silt Clay Colloids in Suspension Sand Sand

Prop. Dollar_General_Yreka_CA Boring: B-1 @ 5' DRY SIEVE ANALYSIS ASTM C136 (without Hydrometer)

Percent Sieve Size Particle Size, mm Passing

1 1/2-in. 37.5 100.0%

1-in. 25 100.0%

3/4-in. 19 100.0%

1/2-in. 12.5 100.0%

3/8-in. 9.5 89.4%

No. 4 4.75 77.4%

No. 8 2.36 60.0%

No. 16 1.18 47.4%

No. 30 0.6 37.7%

No. 50 0.3 28.8%

No. 100 0.15 21.6% No. 200 0.075 16.91%

Prop. Dollar_General_Yreka_CA Boring: B-1 @ 5' PARTICLE SIZE DISTRIBUTION DIAGRAM GRADATION TEST - ASTM C136 - U.S. Sieve Opening, inches U.S. Standard Sieve Number Hydrometer 2 1 1/2 4 8 16 30 50 100 200 1.5 3/4 3/8 100%

90%

80%

70%

60%

50%

Percent Passing 40%

30%

20%

10%

0% 100 10 1 0.1 0.01 0.001 0.0001 Grain Size (mm) Coarse Medium Gravel Fine Sand Silt Clay Colloids in Suspension Sand Sand

Prop. Dollar_General_Yreka_CA Boring: B-2 @ 2' DRY SIEVE ANALYSIS ASTM C136 (without Hydrometer)

Percent Sieve Size Particle Size, mm Passing

1 1/2-in. 37.5 100.0%

1-in. 25 100.0%

3/4-in. 19 100.0%

1/2-in. 12.5 100.0%

3/8-in. 9.5 63.1%

No. 4 4.75 51.6%

No. 8 2.36 42.5%

No. 16 1.18 35.5%

No. 30 0.6 29.8%

No. 50 0.3 24.5%

No. 100 0.15 20.0% No. 200 0.075 15.14%

Prop. Dollar_General_Yreka_CA Boring: B-2 @ 2' PARTICLE SIZE DISTRIBUTION DIAGRAM GRADATION TEST - ASTM C136 - U.S. Sieve Opening, inches U.S. Standard Sieve Number Hydrometer 2 1 1/2 4 8 16 30 50 100 200 1.5 3/4 3/8 100%

90%

80%

70%

60%

50%

Percent Passing 40%

30%

20%

10%

0% 100 10 1 0.1 0.01 0.001 0.0001 Grain Size (mm) Coarse Medium Gravel Fine Sand Silt Clay Colloids in Suspension Sand Sand

Prop. Dollar_General_Yreka_CA Boring: B-2 @ 5' DRY SIEVE ANALYSIS ASTM C136 (without Hydrometer)

Percent Sieve Size Particle Size, mm Passing

1 1/2-in. 37.5 100.0%

1-in. 25 100.0%

3/4-in. 19 100.0%

1/2-in. 12.5 100.0%

3/8-in. 9.5 37.6%

No. 4 4.75 32.3%

No. 8 2.36 26.4%

No. 16 1.18 21.7%

No. 30 0.6 18.4%

No. 50 0.3 15.7%

No. 100 0.15 13.3% No. 200 0.075 10.29%

Prop. Dollar_General_Yreka_CA Boring: B-2 @ 5' PARTICLE SIZE DISTRIBUTION DIAGRAM GRADATION TEST - ASTM C136 - U.S. Sieve Opening, inches U.S. Standard Sieve Number Hydrometer 2 1 1/2 4 8 16 30 50 100 200 1.5 3/4 3/8 100%

90%

80%

70%

60%

50%

Percent Passing 40%

30%

20%

10%

0% 100 10 1 0.1 0.01 0.001 0.0001 Grain Size (mm) Coarse Medium Gravel Fine Sand Silt Clay Colloids in Suspension Sand Sand

Prop. Dollar_General_Yreka_CA Boring: B-2 @ 20' DRY SIEVE ANALYSIS ASTM C136 (without Hydrometer)

Percent Sieve Size Particle Size, mm Passing

1 1/2-in. 37.5 100.0%

1-in. 25 100.0%

3/4-in. 19 100.0%

1/2-in. 12.5 100.0%

3/8-in. 9.5 64.0%

No. 4 4.75 49.1%

No. 8 2.36 37.7%

No. 16 1.18 29.5%

No. 30 0.6 24.1%

No. 50 0.3 20.5%

No. 100 0.15 18.0% No. 200 0.075 14.66%

Prop. Dollar_General_Yreka_CA Boring: B-2 @ 20' PARTICLE SIZE DISTRIBUTION DIAGRAM GRADATION TEST - ASTM C136 - U.S. Sieve Opening, inches U.S. Standard Sieve Number Hydrometer 2 1 1/2 4 8 16 30 50 100 200 1.5 3/4 3/8 100%

90%

80%

70%

60%

50%

Percent Passing 40%

30%

20%

10%

0% 100 10 1 0.1 0.01 0.001 0.0001 Grain Size (mm) Coarse Medium Gravel Fine Sand Silt Clay Colloids in Suspension Sand Sand

Prop. Dollar_General_Yreka_CA Boring: B-4 @ 2' DRY SIEVE ANALYSIS ASTM C136 (without Hydrometer)

Percent Sieve Size Particle Size, mm Passing

1 1/2-in. 37.5 100.0%

1-in. 25 100.0%

3/4-in. 19 100.0%

1/2-in. 12.5 100.0%

3/8-in. 9.5 76.7%

No. 4 4.75 65.5%

No. 8 2.36 51.4%

No. 16 1.18 40.5%

No. 30 0.6 31.0%

No. 50 0.3 21.9%

No. 100 0.15 13.9% No. 200 0.075 9.25%

Prop. Dollar_General_Yreka_CA Boring: B-4 @ 2' PARTICLE SIZE DISTRIBUTION DIAGRAM GRADATION TEST - ASTM C136 - U.S. Sieve Opening, inches U.S. Standard Sieve Number Hydrometer 2 1 1/2 4 8 16 30 50 100 200 1.5 3/4 3/8 100%

90%

80%

70%

60%

50%

Percent Passing 40%

30%

20%

10%

0% 100 10 1 0.1 0.01 0.001 0.0001 Grain Size (mm) Coarse Medium Gravel Fine Sand Silt Clay Colloids in Suspension Sand Sand

Prop. Dollar_General_Yreka_CA Boring: B-4 @ 5' DRY SIEVE ANALYSIS ASTM C136 (without Hydrometer)

Percent Sieve Size Particle Size, mm Passing

1 1/2-in. 37.5 100.0%

1-in. 25 100.0%

3/4-in. 19 100.0%

1/2-in. 12.5 100.0%

3/8-in. 9.5 88.3%

No. 4 4.75 73.1%

No. 8 2.36 56.4%

No. 16 1.18 43.7%

No. 30 0.6 34.0%

No. 50 0.3 24.3%

No. 100 0.15 16.4% No. 200 0.075 11.64%

Prop. Dollar_General_Yreka_CA Boring: B-4 @ 5' PARTICLE SIZE DISTRIBUTION DIAGRAM GRADATION TEST - ASTM C136 - U.S. Sieve Opening, inches U.S. Standard Sieve Number Hydrometer 2 1 1/2 4 8 16 30 50 100 200 1.5 3/4 3/8 100%

90%

80%

70%

60%

50%

Percent Passing 40%

30%

20%

10%

0% 100 10 1 0.1 0.01 0.001 0.0001 Grain Size (mm) Coarse Medium Gravel Fine Sand Silt Clay Colloids in Suspension Sand Sand

Prop. Dollar_General_Yreka_CA Boring: B-5 @ 2' DRY SIEVE ANALYSIS ASTM C136 (without Hydrometer)

Percent Sieve Size Particle Size, mm Passing

1 1/2-in. 37.5 100.0%

1-in. 25 100.0%

3/4-in. 19 100.0%

1/2-in. 12.5 100.0%

3/8-in. 9.5 84.4%

No. 4 4.75 72.5%

No. 8 2.36 55.5%

No. 16 1.18 42.3%

No. 30 0.6 31.6%

No. 50 0.3 23.2%

No. 100 0.15 17.8% No. 200 0.075 13.69%

Prop. Dollar_General_Yreka_CA Boring: B-5 @ 2' Resistance R - Value and Expansion Pressure of Compacted Soils ASTM D2844-94, Cal 301

Prop. Dollar_General_Yreka_CA Project Number: 5-216-0552 Sample Date: 6/7/2016 Date Tested: 6/13/16 Sampled By: SEG Tested By: VT Sample Location: B-7 @ 0' - 3' Material Description: Clayey SAND (SC) with gravel

24.0 100 23.0 22.0 90 21.0 20.0 19.0 80 18.0 17.0 70 16.0 15.0 60 14.0 13.0 12.0 50 Value

11.0 R- 10.0 40 9.0 8.0 7.0 30 Cover Thickness by Stabilometer,in. 6.0 5.0 20 4.0 3.0 2.0 10 1.0 0.0 0 0.0 6.0 12.0 18.0 24.0 800 700 600 500 400 300 200 100 Cover Thickness by Expansion Pressure, in. Exudation Pressure, psi

Specimen 1 2 3 Exudation Pressure, psi 546.9 375 254.3 Moisture at Test, % 8.7 9.6 10.5 Dry Density, pcf 135.1 133.4 132.4 Expansion Pressure, psf 121 35 30.3 Thickness by Stabilometer, in. 2.4 6.4 7.7 Thickness by Expansion Pressure, in 1.1 0.3 0.3 R-Value by Stabilometer 76 37 24 R-Value by Expansion Pressure NA R-Value at 300 psi Exudation Pressure 27

Controlling R-Value 27 Resistance R - Value and Expansion Pressure of Compacted Soils ASTM D2844-94, Cal 301

Prop. Dollar_General_Yreka_CA Project Number: 5-216-0552 Sample Date: 6/7/2016 Date Tested: 6/13/16 Sampled By: SEG Tested By: VT Sample Location: B-9 @ 0' - 3' Material Description: Clayey SAND (SC) with Gravel

24.0 100 23.0 22.0 90 21.0 20.0 19.0 80 18.0 17.0 70 16.0 15.0 60 14.0 13.0 12.0 50 Value

11.0 R- 10.0 40 9.0 8.0 7.0 30 Cover Thickness by Stabilometer,in. 6.0 5.0 20 4.0 3.0 2.0 10 1.0 0.0 0 0.0 6.0 12.0 18.0 24.0 800 700 600 500 400 300 200 100 Cover Thickness by Expansion Pressure, in. Exudation Pressure, psi

Specimen 1 2 3 Exudation Pressure, psi 470.5 274.1 102.2 Moisture at Test, % 8.8 10.2 11.6 Dry Density, pcf 133.0 129.0 125.3 Expansion Pressure, psf 208 78 0.0 Thickness by Stabilometer, in. 3.6 7.5 9.0 Thickness by Expansion Pressure, in 1.9 0.7 0.0 R-Value by Stabilometer 64 26 10 R-Value by Expansion Pressure NA R-Value at 300 psi Exudation Pressure 29

Controlling R-Value 29 LABORATORY COMPACTION CURVE ASTM - D1557, D698

Prop. Dollar_General_Yreka_CA Project Number: 5-216-0552 Date Tested: 6/10/16 Sample Location: B-5 @ 0' - 3' Soil Classification: Clayey SAND (SC) with Gravel 0 Sample/Curve Number: 1 Test Method: 1557 A

1 2 3 Weight of Moist Specimen & Mold, gm 7792.7 7928.8 7829.0 Weight of Compaction Mold, gm 2893.9 2893.9 2893.9 Weight of Moist Specimen, gm 4898.8 5034.8 4935.1 Volume of mold, cu. ft. 0.0750 0.0750 0.0750 Wet Density, lbs/cu.ft. 144.0 148.0 145.1 Weight of Wet (Moisture) Sample, gm 341.0 341.0 341.0 Weight of Dry (Moisture) Sample, gm 319.5 313.4 307.6 Moisture Content, % 6.7% 8.8% 10.9% Dry Density, lbs/cu.ft. 134.9 136.0 130.9

150

Maximum Dry Density: 136.3 lbs/cu.ft 145 2.75 Optimum Moisture Content: 8.3 % 2.70 140 2.65 2.60 135 2.55

130

125

120

Dry Density, lbs/c.u.ft. 115

110

105

100

95 0% 5% 10% 15% 20% 25%

Moisture Content, % of Dry Weight CHEMICAL ANALYSIS

SO4 - Modified Caltrans 417 & Cl - Modified Caltrans 417/422

Prop. Dollar_General_Yreka_CA Project Number: 5-216-0552 Date: 6/13/16 Soil Classification: Clayey Sand (SC) with Gravel

Sample Sample Soluble Sulfate Soluble Chloride pH Number Location SO4-S Cl

1a. B-5 @ 0' - 3' 50 mg/Kg 13 mg/Kg 7.2 1b. B-5 @ 0' - 3' 50 mg/Kg 15 mg/Kg 7.2 1c. B-5 @ 0' - 3' 50 mg/Kg 15 mg/Kg 7.2

Average: 50 mg/Kg 14 mg/Kg 7.2 EXPANSION INDEX TEST ASTM D 4829 / UBC Std. 29-2

Project Number: 5-216-0552 Prop. Dollar_General_Yreka_CA Date: 6/13/16 Sample location/ Depth: B-5 @ 0' - 3' Sample Number: 1 Soil Classification: Clayey Sand (SC)+A1

Trial # 1 2 3 Weight of Soil & Mold, gms 597.9 Weight of Mold, gms 188.8 Weight of Soil, gms 409.1 Wet Density, Lbs/cu.ft. 123.4 Weight of Moisture Sample (Wet), gms 835.0 Weight of Moisture Sample (Dry), gms 761.9 Moisture Content, % 9.6 Dry Density, Lbs/cu.ft. 112.6 Specific Gravity of Soil 2.7 Degree of Saturation, % 52.2

Time Inital 30 min 1 hr 6 hrs 12 hrs 24 hrs Dial Reading 0 0.0048 0.0052 0.0057 -- 0.0059

Expansion Potential Table

Expansion Index measured = 5.9 Exp. Index Potential Exp.

Expansion Index 50 = 6.8 0 - 20 Very Low 21 - 50 Low 51 - 90 Medium Expansion Index = 7 91 - 130 High >130 Very High Atterberg Limits Determination ASTM D - 4318

Project Number: 5-216-0552 Prop. Dollar_General_Yreka_CA Date: 6/13/16 Sample location/ Depth: B-5 @ 0' - 3' Sample Number:

Plastic Limit Liquid Limit Run Number 1 2 3 1 2 3 Weight of Wet Soil & Tare 27.56 28.57 27.46 38.08 39.14 40.97 Weight of Dry Soil & Tare 26.57 27.46 26.52 34.29 34.96 36.29 Weight of water 0.99 1.11 0.94 3.79 4.18 4.68 Weight of Tare 20.86 21.00 21.05 21.17 20.93 21.18 Weight of Dry Soil 5.71 6.46 5.47 13.12 14.03 15.11 Water Content 17.3 17.2 17.2 28.9 29.8 31.0 Number of Blows 29 23 19 Plastic Limit : 17 Liquid Limit : 30 Plasticity Index : 13 Unified Soil Classification : CL

70

60

CH

50

CL 40

30 OH

PLASTICITY % INDEX, PLASTICITY or MH 20

10 OL or CL-ML ML ML 0 0 20 40 60 80 100 120 LIQUID LIMIT, %

APPENDIX

C

APPENDIX C GENERAL EARTHWORK AND PAVEMENT SPECIFICATIONS

When the text of the report conflicts with the general specifications in this appendix, the recommendations in the report have precedence.

1.0 SCOPE OF WORK: These specifications and applicable plans pertain to and include all earthwork associated with the site rough grading, including, but not limited to, the furnishing of all labor, tools and equipment necessary for site clearing and grubbing, stripping, preparation of foundation materials for receiving fill, excavation, processing, placement and compaction of fill and backfill materials to the lines and grades shown on the project grading plans and disposal of excess materials.

2.0 PERFORMANCE: The Contractor shall be responsible for the satisfactory completion of all earthwork in accordance with the project plans and specifications. This work shall be inspected and tested by a representative of SALEM Engineering Group, Incorporated, hereinafter referred to as the Soils Engineer and/or Testing Agency. Attainment of design grades, when achieved, shall be certified by the project Civil Engineer. Both the Soils Engineer and the Civil Engineer are the Owner's representatives. If the Contractor should fail to meet the technical or design requirements embodied in this document and on the applicable plans, he shall make the necessary adjustments until all work is deemed satisfactory as determined by both the Soils Engineer and the Civil Engineer. No deviation from these specifications shall be made except upon written approval of the Soils Engineer, Civil Engineer, or project Architect.

No earthwork shall be performed without the physical presence or approval of the Soils Engineer. The Contractor shall notify the Soils Engineer at least 2 working days prior to the commencement of any aspect of the site earthwork.

The Contractor shall assume sole and complete responsibility for job site conditions during the course of construction of this project, including safety of all persons and property; that this requirement shall apply continuously and not be limited to normal working hours; and that the Contractor shall defend, indemnify and hold the Owner and the Engineers harmless from any and all liability, real or alleged, in connection with the performance of work on this project, except for liability arising from the sole negligence of the Owner or the Engineers.

3.0 TECHNICAL REQUIREMENTS: All compacted materials shall be densified to no less that 95 percent of relative compaction (90 percent for cohesive soils) based on ASTM D1557 Test Method (latest edition), UBC or CAL-216, or as specified in the technical portion of the Soil Engineer's report. The location and frequency of field density tests shall be determined by the Soils Engineer. The results of these tests and compliance with these specifications shall be the basis upon which satisfactory completion of work will be judged by the Soils Engineer.

4.0 SOILS AND FOUNDATION CONDITIONS: The Contractor is presumed to have visited the site and to have familiarized himself with existing site conditions and the contents of the data presented in the Geotechnical Engineering Report. The Contractor shall make his own interpretation of the data contained in the Geotechnical Engineering Report and the Contractor shall not be relieved of liability for any loss sustained as a result of any variance between conditions indicated by or deduced from said report and the actual conditions encountered during the progress of the work.

Project No. 4-215-1061 C-1 of 4

5.0 DUST CONTROL: The work includes dust control as required for the alleviation or prevention of any dust nuisance on or about the site or the borrow area, or off-site if caused by the Contractor's operation either during the performance of the earthwork or resulting from the conditions in which the Contractor leaves the site. The Contractor shall assume all liability, including court costs of codefendants, for all claims related to dust or wind-blown materials attributable to his work. Site preparation shall consist of site clearing and grubbing and preparation of foundation materials for receiving fill.

6.0 CLEARING AND GRUBBING: The Contractor shall accept the site in this present condition and shall demolish and/or remove from the area of designated project earthwork all structures, both surface and subsurface, trees, brush, roots, debris, organic matter and all other matter determined by the Soils Engineer to be deleterious. Such materials shall become the property of the Contractor and shall be removed from the site.

Tree root systems in proposed improvement areas should be removed to a minimum depth of 3 feet and to such an extent which would permit removal of all roots greater than ½ inch in diameter. Tree roots removed in parking areas may be limited to the upper 1½ feet of the ground surface. Backfill of tree root excavations is not permitted until all exposed surfaces have been inspected and the Soils Engineer is present for the proper control of backfill placement and compaction. Burning in areas which are to receive fill materials shall not be permitted.

7.0 SUBGRADE PREPARATION: Surfaces to receive Engineered Fill and/or building or slab loads shall be prepared as outlined above, scarified to a minimum of 12 inches, moisture-conditioned as necessary, and recompacted to 95 percent relative compaction (90 percent for cohesive soils).

Loose soil areas and/or areas of disturbed soil shall be moisture-conditioned as necessary and recompacted to 95 percent relative compaction (90 percent for cohesive soils). All ruts, hummocks, or other uneven surface features shall be removed by surface grading prior to placement of any fill materials. All areas which are to receive fill materials shall be approved by the Soils Engineer prior to the placement of any fill material.

Where fill will be placed on slopes steeper than 5:1 (H:V), it will be necessary to bench the slope to receive fill. As successive filling operations are performed, slopes should be benched to receive fill. Benches should be constructed approximately every 1-foot (slope height less than four feet) or every two feet (slope height greater than four feet) of vertical fill thickness. Benching should begin at the toe of the slope. As benches are constructed, the exposed bench should be scarified at least 8 inches and moisture conditioned and compacted as described in the paragraph above. Where fill will be placed in pits, basins, etc., benching is not required, however, all loose soil should be removed from the invert and sides and the area made dish-shaped to receive fill. Any loose soil excavated during site preparation may be used as fill, provided it meets the requirement for engineered fill. Compaction equipment should provide kneading effort (e.g. with sheeps foot rollers) to enhance uniformity and minimize stratification.

8.0 EXCAVATION: All excavation shall be accomplished to the tolerance normally defined by the Civil Engineer as shown on the project grading plans. All over-excavation below the grades specified shall be backfilled at the Contractor's expense and shall be compacted in accordance with the applicable technical requirements.

Project No. 4-215-1061 C-2 of 4

9.0 FILL AND BACKFILL MATERIAL: No material shall be moved or compacted without the presence or approval of the Soils Engineer. Material from the required site excavation may be utilized for construction site fills, provided prior approval is given by the Soils Engineer. All materials utilized for constructing site fills shall be free from vegetation or other deleterious matter as determined by the Soils Engineer.

10.0 PLACEMENT, SPREADING AND COMPACTION: The placement and spreading of approved fill materials and the processing and compaction of approved fill and native materials shall be the responsibility of the Contractor. Compaction of fill materials by flooding, ponding, or jetting shall not be permitted unless specifically approved by local code, as well as the Soils Engineer. Both cut and fill shall be surface-compacted to the satisfaction of the Soils Engineer prior to final acceptance.

11.0 SEASONAL LIMITS: No fill material shall be placed, spread, or rolled while it is frozen or thawing, or during unfavorable wet weather conditions. When the work is interrupted by heavy rains, fill operations shall not be resumed until the Soils Engineer indicates that the moisture content and density of previously placed fill is as specified.

12.0 DEFINITIONS - The term "pavement" shall include asphaltic concrete surfacing, untreated aggregate base, and aggregate subbase. The term "subgrade" is that portion of the area on which surfacing, base, or subbase is to be placed.

The term “Standard Specifications”: hereinafter referred to, is the most recent edition of the Standard Specifications of the State of California, Department of Transportation. The term "relative compaction" refers to the field density expressed as a percentage of the maximum laboratory density as determined by ASTM D1557 Test Method (latest edition) or California Test Method 216 (CAL-216), as applicable.

13.0 PREPARATION OF THE SUBGRADE - The Contractor shall prepare the surface of the various subgrades receiving subsequent pavement courses to the lines, grades, and dimensions given on the plans. The upper 12 inches of the soil subgrade beneath the pavement section shall be compacted to a minimum relative compaction of 95 percent based upon ASTM D1557. The finished subgrades shall be tested and approved by the Soils Engineer prior to the placement of additional pavement courses.

14.0 AGGREGATE BASE - The aggregate base material shall be spread and compacted on the prepared subgrade in conformity with the lines, grades, and dimensions shown on the plans. The aggregate base material shall conform to the requirements of Section 26 of the Standard Specifications for Class II material, ¾-inch or 1½-inches maximum size. The aggregate base material shall be compacted to a minimum relative compaction of 95 percent based upon CAL-216. The aggregate base material shall be spread in layers not exceeding 6 inches and each layer of aggregate material course shall be tested and approved by the Soils Engineer prior to the placement of successive layers.

15.0 AGGREGATE SUBBASE - The aggregate subbase shall be spread and compacted on the prepared subgrade in conformity with the lines, grades, and dimensions shown on the plans. The aggregate subbase material shall conform to the requirements of Section 25 of the Standard Specifications for Class II Subbase material. The aggregate subbase material shall be compacted to a minimum relative compaction of 95 percent based upon CAL-216, and it shall be spread and compacted in accordance with the Standard Specifications. Each layer of aggregate subbase shall be tested and approved by the Soils Engineer prior to the placement of successive layers.

Project No. 4-215-1061 C-3 of 4

16.0ASPHALTIC CONCRETE SURFACING - Asphaltic concrete surfacing shall consist of a mixture of mineral aggregate and paving grade asphalt, mixed at a central mixing plant and spread and compacted on a prepared base in conformity with the lines, grades, and dimensions shown on the plans. The viscosity grade of the asphalt shall be PG 64-10, unless otherwise stipulated or local conditions warrant more stringent grade. The mineral aggregate shall be Type A or B, ½ inch maximum size, medium grading, and shall conform to the requirements set forth in Section 39 of the Standard Specifications. The drying, proportioning, and mixing of the materials shall conform to Section 39. The prime coat, spreading and compacting equipment, and spreading and compacting the mixture shall conform to the applicable chapters of Section 39, with the exception that no surface course shall be placed when the atmospheric temperature is below 50 degrees F. The surfacing shall be rolled with a combination steel-wheel and pneumatic rollers, as described in the Standard Specifications. The surface course shall be placed with an approved self- propelled mechanical spreading and finishing machine.

Project No. 4-215-1061 C-4 of 4

Draft Initial Study and Mitigated Negative Declaration Dollar General Retail Store

APPENDIX E

Greenhouse Gas Emissions Modeling Outputs

CalEEMod Version: CalEEMod.2016.3.2 Page 1 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

Dollar General Siskiyou County, Annual

1.0 Project Characteristics

1.1 Land Usage

Land Uses Size Metric Lot Acreage Floor Surface Area Population

Free-Standing Discount Store 9.10 1000sqft 0.34 9,100.00 0

Parking Lot 36.00 Space 0.32 17,583.00 0

Other Non-Asphalt Surfaces 11.57 1000sqft 0.27 11,570.00 0

1.2 Other Project Characteristics

Urbanization Urban Wind Speed (m/s) 2.2 Precipitation Freq (Days) 85

Climate Zone 14 Operational Year 2019

Utility Company PacifiCorp

CO2 Intensity 1656.39 CH4 Intensity 0.029 N2O Intensity 0.006 (lb/MWhr) (lb/MWhr) (lb/MWhr)

1.3 User Entered Comments & Non-Default Data

Project Characteristics - Land Use - Adjusted acreage and square footage per Project Description. Construction Phase - Construction, paving, and painting assumed to occur simultaneously. Construction Off-road Equipment Mitigation - Reduction percentages per SCAQMD CEQA Handbook. CalEEMod Version: CalEEMod.2016.3.2 Page 2 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

Table Name Column Name Default Value New Value

tblConstDustMitigation CleanPavedRoadPercentReduction 0 40

tblConstDustMitigation WaterUnpavedRoadVehicleSpeed 0 15

tblConstructionPhase NumDays 5.00 100.00

tblConstructionPhase NumDays 5.00 100.00

tblConstructionPhase PhaseEndDate 10/18/2018 10/4/2018

tblConstructionPhase PhaseEndDate 10/11/2018 10/4/2018

tblConstructionPhase PhaseStartDate 10/12/2018 5/18/2018

tblConstructionPhase PhaseStartDate 10/5/2018 5/18/2018

tblLandUse LandUseSquareFeet 14,400.00 17,583.00

tblLandUse LotAcreage 0.21 0.34

2.0 Emissions Summary CalEEMod Version: CalEEMod.2016.3.2 Page 3 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

2.1 Overall Construction Unmitigated Construction

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Year tons/yr MT/yr

2018 0.2513 1.1611 0.9895 1.5600e- 0.0171 0.0699 0.0870 4.7700e- 0.0651 0.0699 0.0000 138.9119 138.9119 0.0333 0.0000 139.7435 003 003

Maximum 0.2513 1.1611 0.9895 1.5600e- 0.0171 0.0699 0.0870 4.7700e- 0.0651 0.0699 0.0000 138.9119 138.9119 0.0333 0.0000 139.7435 003 003

Mitigated Construction

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Year tons/yr MT/yr

2018 0.2513 1.1611 0.9895 1.5600e- 0.0111 0.0699 0.0810 3.2000e- 0.0651 0.0683 0.0000 138.9118 138.9118 0.0333 0.0000 139.7433 003 003

Maximum 0.2513 1.1611 0.9895 1.5600e- 0.0111 0.0699 0.0810 3.2000e- 0.0651 0.0683 0.0000 138.9118 138.9118 0.0333 0.0000 139.7433 003 003

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio-CO2 Total CO2 CH4 N20 CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Percent 0.00 0.00 0.00 0.00 34.97 0.00 6.87 32.91 0.00 2.25 0.00 0.00 0.00 0.00 0.00 0.00 Reduction CalEEMod Version: CalEEMod.2016.3.2 Page 4 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

Quarter Start Date End Date Maximum Unmitigated ROG + NOX (tons/quarter) Maximum Mitigated ROG + NOX (tons/quarter)

1 5-1-2018 7-31-2018 0.7577 0.7577

2 8-1-2018 9-30-2018 0.6070 0.6070

Highest 0.7577 0.7577

2.2 Overall Operational Unmitigated Operational

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Area 0.0490 0.0000 5.3000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.0100e- 1.0100e- 0.0000 0.0000 1.0800e- 004 003 003 003

Energy 3.5000e- 3.2200e- 2.7000e- 2.0000e- 2.4000e- 2.4000e- 2.4000e- 2.4000e- 0.0000 100.5621 100.5621 1.7700e- 4.2000e- 100.7301 004 003 003 005 004 004 004 004 003 004

Mobile 0.2935 2.3186 2.7603 7.1800e- 0.3123 0.0100 0.3223 0.0842 9.5100e- 0.0937 0.0000 664.3763 664.3763 0.0655 0.0000 666.0133 003 003

Waste 0.0000 0.0000 0.0000 0.0000 7.9451 0.0000 7.9451 0.4695 0.0000 19.6836

Water 0.0000 0.0000 0.0000 0.0000 0.2139 3.8267 4.0406 0.0220 5.3000e- 4.7500 004

Total 0.3429 2.3218 2.7635 7.2000e- 0.3123 0.0103 0.3225 0.0842 9.7500e- 0.0939 8.1589 768.7661 776.9250 0.5588 9.5000e- 791.1782 003 003 004 CalEEMod Version: CalEEMod.2016.3.2 Page 5 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

2.2 Overall Operational Mitigated Operational

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Area 0.0490 0.0000 5.3000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.0100e- 1.0100e- 0.0000 0.0000 1.0800e- 004 003 003 003

Energy 3.5000e- 3.2200e- 2.7000e- 2.0000e- 2.4000e- 2.4000e- 2.4000e- 2.4000e- 0.0000 100.5621 100.5621 1.7700e- 4.2000e- 100.7301 004 003 003 005 004 004 004 004 003 004

Mobile 0.2935 2.3186 2.7603 7.1800e- 0.3123 0.0100 0.3223 0.0842 9.5100e- 0.0937 0.0000 664.3763 664.3763 0.0655 0.0000 666.0133 003 003

Waste 0.0000 0.0000 0.0000 0.0000 7.9451 0.0000 7.9451 0.4695 0.0000 19.6836

Water 0.0000 0.0000 0.0000 0.0000 0.2139 3.8267 4.0406 0.0220 5.3000e- 4.7500 004

Total 0.3429 2.3218 2.7635 7.2000e- 0.3123 0.0103 0.3225 0.0842 9.7500e- 0.0939 8.1589 768.7661 776.9250 0.5588 9.5000e- 791.1782 003 003 004

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio-CO2 Total CO2 CH4 N20 CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Percent 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Reduction

3.0 Construction Detail

Construction Phase CalEEMod Version: CalEEMod.2016.3.2 Page 6 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

Phase Phase Name Phase Type Start Date End Date Num Days Num Days Phase Description Number Week

1 Site Preparation Site Preparation 5/15/2018 5/15/2018 5 1

2 Grading Grading 5/16/2018 5/17/2018 5 2

3 Building Construction Building Construction 5/18/2018 10/4/2018 5 100

4 Paving Paving 5/18/2018 10/4/2018 5 100

5 Architectural Coating Architectural Coating 5/18/2018 10/4/2018 5 100

Acres of Grading (Site Preparation Phase): 0.5

Acres of Grading (Grading Phase): 0

Acres of Paving: 0.59

Residential Indoor: 0; Residential Outdoor: 0; Non-Residential Indoor: 13,650; Non-Residential Outdoor: 4,550; Striped Parking Area: 1,749 (Architectural Coating – sqft)

OffRoad Equipment CalEEMod Version: CalEEMod.2016.3.2 Page 7 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

Phase Name Offroad Equipment Type Amount Usage Hours Horse Power Load Factor

Architectural Coating Air Compressors 1 6.00 78 0.48

Paving Cement and Mortar Mixers 4 6.00 9 0.56

Grading Concrete/Industrial Saws 1 8.00 81 0.73

Building Construction Cranes 1 4.00 231 0.29

Building Construction Forklifts 2 6.00 89 0.20

Site Preparation Graders 1 8.00 187 0.41

Paving Pavers 1 7.00 130 0.42

Paving Rollers 1 7.00 80 0.38

Grading Rubber Tired Dozers 1 1.00 247 0.40

Building Construction Tractors/Loaders/Backhoes 2 8.00 97 0.37

Grading Tractors/Loaders/Backhoes 2 6.00 97 0.37

Paving Tractors/Loaders/Backhoes 1 7.00 97 0.37

Site Preparation Tractors/Loaders/Backhoes 1 8.00 97 0.37

Trips and VMT

Phase Name Offroad Equipment Worker Trip Vendor Trip Hauling Trip Worker Trip Vendor Trip Hauling Trip Worker Vehicle Vendor Hauling Count Number Number Number Length Length Length Class Vehicle Class Vehicle Class

Site Preparation 2 5.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

Grading 4 10.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

Building Construction 5 15.00 6.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

Paving 7 18.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

Architectural Coating 1 3.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

3.1 Mitigation Measures Construction CalEEMod Version: CalEEMod.2016.3.2 Page 8 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

Water Exposed Area Reduce Vehicle Speed on Unpaved Roads Clean Paved Roads

3.2 Site Preparation - 2018 Unmitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Fugitive Dust 2.7000e- 0.0000 2.7000e- 3.0000e- 0.0000 3.0000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 004 004 005 005

Off-Road 3.9000e- 4.8800e- 2.1300e- 0.0000 2.1000e- 2.1000e- 1.9000e- 1.9000e- 0.0000 0.4458 0.4458 1.4000e- 0.0000 0.4492 004 003 003 004 004 004 004 004

Total 3.9000e- 4.8800e- 2.1300e- 0.0000 2.7000e- 2.1000e- 4.8000e- 3.0000e- 1.9000e- 2.2000e- 0.0000 0.4458 0.4458 1.4000e- 0.0000 0.4492 004 003 003 004 004 004 005 004 004 004 CalEEMod Version: CalEEMod.2016.3.2 Page 9 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

3.2 Site Preparation - 2018 Unmitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 2.0000e- 2.0000e- 1.7000e- 0.0000 2.0000e- 0.0000 2.0000e- 1.0000e- 0.0000 1.0000e- 0.0000 0.0209 0.0209 0.0000 0.0000 0.0209 005 005 004 005 005 005 005

Total 2.0000e- 2.0000e- 1.7000e- 0.0000 2.0000e- 0.0000 2.0000e- 1.0000e- 0.0000 1.0000e- 0.0000 0.0209 0.0209 0.0000 0.0000 0.0209 005 005 004 005 005 005 005

Mitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Fugitive Dust 1.2000e- 0.0000 1.2000e- 1.0000e- 0.0000 1.0000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 004 004 005 005

Off-Road 3.9000e- 4.8800e- 2.1300e- 0.0000 2.1000e- 2.1000e- 1.9000e- 1.9000e- 0.0000 0.4458 0.4458 1.4000e- 0.0000 0.4492 004 003 003 004 004 004 004 004

Total 3.9000e- 4.8800e- 2.1300e- 0.0000 1.2000e- 2.1000e- 3.3000e- 1.0000e- 1.9000e- 2.0000e- 0.0000 0.4458 0.4458 1.4000e- 0.0000 0.4492 004 003 003 004 004 004 005 004 004 004 CalEEMod Version: CalEEMod.2016.3.2 Page 10 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

3.2 Site Preparation - 2018 Mitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 2.0000e- 2.0000e- 1.7000e- 0.0000 1.0000e- 0.0000 1.0000e- 0.0000 0.0000 0.0000 0.0000 0.0209 0.0209 0.0000 0.0000 0.0209 005 005 004 005 005

Total 2.0000e- 2.0000e- 1.7000e- 0.0000 1.0000e- 0.0000 1.0000e- 0.0000 0.0000 0.0000 0.0000 0.0209 0.0209 0.0000 0.0000 0.0209 005 005 004 005 005

3.3 Grading - 2018 Unmitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Fugitive Dust 7.5000e- 0.0000 7.5000e- 4.1000e- 0.0000 4.1000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 004 004 004 004

Off-Road 1.0600e- 9.4300e- 7.7800e- 1.0000e- 6.2000e- 6.2000e- 5.9000e- 5.9000e- 0.0000 1.0608 1.0608 2.0000e- 0.0000 1.0659 003 003 003 005 004 004 004 004 004

Total 1.0600e- 9.4300e- 7.7800e- 1.0000e- 7.5000e- 6.2000e- 1.3700e- 4.1000e- 5.9000e- 1.0000e- 0.0000 1.0608 1.0608 2.0000e- 0.0000 1.0659 003 003 003 005 004 004 003 004 004 003 004 CalEEMod Version: CalEEMod.2016.3.2 Page 11 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

3.3 Grading - 2018 Unmitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 9.0000e- 7.0000e- 6.6000e- 0.0000 8.0000e- 0.0000 8.0000e- 2.0000e- 0.0000 2.0000e- 0.0000 0.0836 0.0836 1.0000e- 0.0000 0.0837 005 005 004 005 005 005 005 005

Total 9.0000e- 7.0000e- 6.6000e- 0.0000 8.0000e- 0.0000 8.0000e- 2.0000e- 0.0000 2.0000e- 0.0000 0.0836 0.0836 1.0000e- 0.0000 0.0837 005 005 004 005 005 005 005 005

Mitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Fugitive Dust 3.4000e- 0.0000 3.4000e- 1.9000e- 0.0000 1.9000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 004 004 004 004

Off-Road 1.0600e- 9.4300e- 7.7800e- 1.0000e- 6.2000e- 6.2000e- 5.9000e- 5.9000e- 0.0000 1.0608 1.0608 2.0000e- 0.0000 1.0659 003 003 003 005 004 004 004 004 004

Total 1.0600e- 9.4300e- 7.7800e- 1.0000e- 3.4000e- 6.2000e- 9.6000e- 1.9000e- 5.9000e- 7.8000e- 0.0000 1.0608 1.0608 2.0000e- 0.0000 1.0659 003 003 003 005 004 004 004 004 004 004 004 CalEEMod Version: CalEEMod.2016.3.2 Page 12 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

3.3 Grading - 2018 Mitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 9.0000e- 7.0000e- 6.6000e- 0.0000 5.0000e- 0.0000 5.0000e- 1.0000e- 0.0000 1.0000e- 0.0000 0.0836 0.0836 1.0000e- 0.0000 0.0837 005 005 004 005 005 005 005 005

Total 9.0000e- 7.0000e- 6.6000e- 0.0000 5.0000e- 0.0000 5.0000e- 1.0000e- 0.0000 1.0000e- 0.0000 0.0836 0.0836 1.0000e- 0.0000 0.0837 005 005 004 005 005 005 005 005

3.4 Building Construction - 2018 Unmitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Off-Road 0.0542 0.5516 0.3876 5.7000e- 0.0354 0.0354 0.0326 0.0326 0.0000 52.0058 52.0058 0.0162 0.0000 52.4106 004

Total 0.0542 0.5516 0.3876 5.7000e- 0.0354 0.0354 0.0326 0.0326 0.0000 52.0058 52.0058 0.0162 0.0000 52.4106 004 CalEEMod Version: CalEEMod.2016.3.2 Page 13 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

3.4 Building Construction - 2018 Unmitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 2.7600e- 0.0446 0.0178 9.0000e- 1.9500e- 4.0000e- 2.3500e- 5.7000e- 3.8000e- 9.4000e- 0.0000 8.9441 8.9441 7.4000e- 0.0000 8.9626 003 005 003 004 003 004 004 004 004

Worker 6.5900e- 5.4300e- 0.0498 7.0000e- 5.8500e- 7.0000e- 5.9200e- 1.5600e- 6.0000e- 1.6200e- 0.0000 6.2684 6.2684 4.5000e- 0.0000 6.2796 003 003 005 003 005 003 003 005 003 004

Total 9.3500e- 0.0500 0.0676 1.6000e- 7.8000e- 4.7000e- 8.2700e- 2.1300e- 4.4000e- 2.5600e- 0.0000 15.2124 15.2124 1.1900e- 0.0000 15.2422 003 004 003 004 003 003 004 003 003

Mitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Off-Road 0.0542 0.5516 0.3876 5.7000e- 0.0354 0.0354 0.0326 0.0326 0.0000 52.0058 52.0058 0.0162 0.0000 52.4105 004

Total 0.0542 0.5516 0.3876 5.7000e- 0.0354 0.0354 0.0326 0.0326 0.0000 52.0058 52.0058 0.0162 0.0000 52.4105 004 CalEEMod Version: CalEEMod.2016.3.2 Page 14 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

3.4 Building Construction - 2018 Mitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 2.7600e- 0.0446 0.0178 9.0000e- 1.4000e- 4.0000e- 1.8000e- 4.3000e- 3.8000e- 8.1000e- 0.0000 8.9441 8.9441 7.4000e- 0.0000 8.9626 003 005 003 004 003 004 004 004 004

Worker 6.5900e- 5.4300e- 0.0498 7.0000e- 3.8300e- 7.0000e- 3.9000e- 1.0600e- 6.0000e- 1.1200e- 0.0000 6.2684 6.2684 4.5000e- 0.0000 6.2796 003 003 005 003 005 003 003 005 003 004

Total 9.3500e- 0.0500 0.0676 1.6000e- 5.2300e- 4.7000e- 5.7000e- 1.4900e- 4.4000e- 1.9300e- 0.0000 15.2124 15.2124 1.1900e- 0.0000 15.2422 003 004 003 004 003 003 004 003 003

3.5 Paving - 2018 Unmitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Off-Road 0.0460 0.4372 0.3612 5.6000e- 0.0255 0.0255 0.0237 0.0237 0.0000 48.5406 48.5406 0.0137 0.0000 48.8827 004

Paving 4.2000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 004

Total 0.0464 0.4372 0.3612 5.6000e- 0.0255 0.0255 0.0237 0.0237 0.0000 48.5406 48.5406 0.0137 0.0000 48.8827 004 CalEEMod Version: CalEEMod.2016.3.2 Page 15 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

3.5 Paving - 2018 Unmitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 7.9100e- 6.5100e- 0.0597 8.0000e- 7.0200e- 8.0000e- 7.1000e- 1.8700e- 7.0000e- 1.9400e- 0.0000 7.5221 7.5221 5.4000e- 0.0000 7.5356 003 003 005 003 005 003 003 005 003 004

Total 7.9100e- 6.5100e- 0.0597 8.0000e- 7.0200e- 8.0000e- 7.1000e- 1.8700e- 7.0000e- 1.9400e- 0.0000 7.5221 7.5221 5.4000e- 0.0000 7.5356 003 003 005 003 005 003 003 005 003 004

Mitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Off-Road 0.0460 0.4372 0.3612 5.6000e- 0.0255 0.0255 0.0237 0.0237 0.0000 48.5406 48.5406 0.0137 0.0000 48.8827 004

Paving 4.2000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 004

Total 0.0464 0.4372 0.3612 5.6000e- 0.0255 0.0255 0.0237 0.0237 0.0000 48.5406 48.5406 0.0137 0.0000 48.8827 004 CalEEMod Version: CalEEMod.2016.3.2 Page 16 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

3.5 Paving - 2018 Mitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 7.9100e- 6.5100e- 0.0597 8.0000e- 4.6000e- 8.0000e- 4.6800e- 1.2800e- 7.0000e- 1.3500e- 0.0000 7.5221 7.5221 5.4000e- 0.0000 7.5356 003 003 005 003 005 003 003 005 003 004

Total 7.9100e- 6.5100e- 0.0597 8.0000e- 4.6000e- 8.0000e- 4.6800e- 1.2800e- 7.0000e- 1.3500e- 0.0000 7.5221 7.5221 5.4000e- 0.0000 7.5356 003 003 005 003 005 003 003 005 003 004

3.6 Architectural Coating - 2018 Unmitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Archit. Coating 0.1156 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Off-Road 0.0149 0.1003 0.0927 1.5000e- 7.5300e- 7.5300e- 7.5300e- 7.5300e- 0.0000 12.7663 12.7663 1.2100e- 0.0000 12.7966 004 003 003 003 003 003

Total 0.1305 0.1003 0.0927 1.5000e- 7.5300e- 7.5300e- 7.5300e- 7.5300e- 0.0000 12.7663 12.7663 1.2100e- 0.0000 12.7966 004 003 003 003 003 003 CalEEMod Version: CalEEMod.2016.3.2 Page 17 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

3.6 Architectural Coating - 2018 Unmitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 1.3200e- 1.0900e- 9.9600e- 1.0000e- 1.1700e- 1.0000e- 1.1800e- 3.1000e- 1.0000e- 3.2000e- 0.0000 1.2537 1.2537 9.0000e- 0.0000 1.2559 003 003 003 005 003 005 003 004 005 004 005

Total 1.3200e- 1.0900e- 9.9600e- 1.0000e- 1.1700e- 1.0000e- 1.1800e- 3.1000e- 1.0000e- 3.2000e- 0.0000 1.2537 1.2537 9.0000e- 0.0000 1.2559 003 003 003 005 003 005 003 004 005 004 005

Mitigated Construction On-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Archit. Coating 0.1156 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Off-Road 0.0149 0.1003 0.0927 1.5000e- 7.5300e- 7.5300e- 7.5300e- 7.5300e- 0.0000 12.7663 12.7663 1.2100e- 0.0000 12.7966 004 003 003 003 003 003

Total 0.1305 0.1003 0.0927 1.5000e- 7.5300e- 7.5300e- 7.5300e- 7.5300e- 0.0000 12.7663 12.7663 1.2100e- 0.0000 12.7966 004 003 003 003 003 003 CalEEMod Version: CalEEMod.2016.3.2 Page 18 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

3.6 Architectural Coating - 2018 Mitigated Construction Off-Site

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Worker 1.3200e- 1.0900e- 9.9600e- 1.0000e- 7.7000e- 1.0000e- 7.8000e- 2.1000e- 1.0000e- 2.2000e- 0.0000 1.2537 1.2537 9.0000e- 0.0000 1.2559 003 003 003 005 004 005 004 004 005 004 005

Total 1.3200e- 1.0900e- 9.9600e- 1.0000e- 7.7000e- 1.0000e- 7.8000e- 2.1000e- 1.0000e- 2.2000e- 0.0000 1.2537 1.2537 9.0000e- 0.0000 1.2559 003 003 003 005 004 005 004 004 005 004 005

4.0 Operational Detail - Mobile

4.1 Mitigation Measures Mobile CalEEMod Version: CalEEMod.2016.3.2 Page 19 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Mitigated 0.2935 2.3186 2.7603 7.1800e- 0.3123 0.0100 0.3223 0.0842 9.5100e- 0.0937 0.0000 664.3763 664.3763 0.0655 0.0000 666.0133 003 003

Unmitigated 0.2935 2.3186 2.7603 7.1800e- 0.3123 0.0100 0.3223 0.0842 9.5100e- 0.0937 0.0000 664.3763 664.3763 0.0655 0.0000 666.0133 003 003

4.2 Trip Summary Information

Average Daily Trip Rate Unmitigated Mitigated Land Use Weekday Saturday Sunday Annual VMT Annual VMT

Free-Standing Discount Store 520.88 646.74 512.88 838,445 838,445 Other Non-Asphalt Surfaces 0.00 0.00 0.00 Parking Lot 0.00 0.00 0.00 Total 520.88 646.74 512.88 838,445 838,445

4.3 Trip Type Information

Miles Trip % Trip Purpose %

Land Use H-W or C-W H-S or C-C H-O or C-NW H-W or C-W H-S or C-C H-O or C-NW Primary Diverted Pass-by Free-Standing Discount Store 9.50 7.30 7.30 12.20 68.80 19.00 47.5 35.5 17 Other Non-Asphalt Surfaces 9.50 7.30 7.30 0.00 0.00 0.00 0 0 0 Parking Lot 9.50 7.30 7.30 0.00 0.00 0.00 0 0 0

4.4 Fleet Mix CalEEMod Version: CalEEMod.2016.3.2 Page 20 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

Land Use LDA LDT1 LDT2 MDV LHD1 LHD2 MHD HHD OBUS UBUS MCY SBUS MH Free-Standing Discount Store 0.472396 0.042813 0.180241 0.124142 0.040823 0.007259 0.008637 0.112950 0.001295 0.001737 0.005316 0.001033 0.001359

Other Non-Asphalt Surfaces 0.472396 0.042813 0.180241 0.124142 0.040823 0.007259 0.008637 0.112950 0.001295 0.001737 0.005316 0.001033 0.001359

Parking Lot 0.472396 0.042813 0.180241 0.124142 0.040823 0.007259 0.008637 0.112950 0.001295 0.001737 0.005316 0.001033 0.001359

5.0 Energy Detail

Historical Energy Use: N

5.1 Mitigation Measures Energy

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Electricity 0.0000 0.0000 0.0000 0.0000 0.0000 97.0608 97.0608 1.7000e- 3.5000e- 97.2081 Mitigated 003 004

Electricity 0.0000 0.0000 0.0000 0.0000 0.0000 97.0608 97.0608 1.7000e- 3.5000e- 97.2081 Unmitigated 003 004

NaturalGas 3.5000e- 3.2200e- 2.7000e- 2.0000e- 2.4000e- 2.4000e- 2.4000e- 2.4000e- 0.0000 3.5013 3.5013 7.0000e- 6.0000e- 3.5221 Mitigated 004 003 003 005 004 004 004 004 005 005

NaturalGas 3.5000e- 3.2200e- 2.7000e- 2.0000e- 2.4000e- 2.4000e- 2.4000e- 2.4000e- 0.0000 3.5013 3.5013 7.0000e- 6.0000e- 3.5221 Unmitigated 004 003 003 005 004 004 004 004 005 005 CalEEMod Version: CalEEMod.2016.3.2 Page 21 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

5.2 Energy by Land Use - NaturalGas Unmitigated

NaturalGa ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e s Use PM10 PM10 Total PM2.5 PM2.5 Total

Land Use kBTU/yr tons/yr MT/yr

Free-Standing 65611 3.5000e- 3.2200e- 2.7000e- 2.0000e- 2.4000e- 2.4000e- 2.4000e- 2.4000e- 0.0000 3.5013 3.5013 7.0000e- 6.0000e- 3.5221 Discount Store 004 003 003 005 004 004 004 004 005 005

Other Non- 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Asphalt Surfaces

Parking Lot 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 3.5000e- 3.2200e- 2.7000e- 2.0000e- 2.4000e- 2.4000e- 2.4000e- 2.4000e- 0.0000 3.5013 3.5013 7.0000e- 6.0000e- 3.5221 004 003 003 005 004 004 004 004 005 005

Mitigated

NaturalGa ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e s Use PM10 PM10 Total PM2.5 PM2.5 Total

Land Use kBTU/yr tons/yr MT/yr

Free-Standing 65611 3.5000e- 3.2200e- 2.7000e- 2.0000e- 2.4000e- 2.4000e- 2.4000e- 2.4000e- 0.0000 3.5013 3.5013 7.0000e- 6.0000e- 3.5221 Discount Store 004 003 003 005 004 004 004 004 005 005

Other Non- 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Asphalt Surfaces

Parking Lot 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 3.5000e- 3.2200e- 2.7000e- 2.0000e- 2.4000e- 2.4000e- 2.4000e- 2.4000e- 0.0000 3.5013 3.5013 7.0000e- 6.0000e- 3.5221 004 003 003 005 004 004 004 004 005 005 CalEEMod Version: CalEEMod.2016.3.2 Page 22 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

5.3 Energy by Land Use - Electricity Unmitigated

Electricity Total CO2 CH4 N2O CO2e Use

Land Use kWh/yr MT/yr

Free-Standing 123032 92.4371 1.6200e- 3.3000e- 92.5774 Discount Store 003 004

Other Non- 0 0.0000 0.0000 0.0000 0.0000 Asphalt Surfaces

Parking Lot 6154.05 4.6237 8.0000e- 2.0000e- 4.6307 005 005

Total 97.0608 1.7000e- 3.5000e- 97.2081 003 004

Mitigated

Electricity Total CO2 CH4 N2O CO2e Use

Land Use kWh/yr MT/yr

Free-Standing 123032 92.4371 1.6200e- 3.3000e- 92.5774 Discount Store 003 004

Other Non- 0 0.0000 0.0000 0.0000 0.0000 Asphalt Surfaces

Parking Lot 6154.05 4.6237 8.0000e- 2.0000e- 4.6307 005 005

Total 97.0608 1.7000e- 3.5000e- 97.2081 003 004

6.0 Area Detail CalEEMod Version: CalEEMod.2016.3.2 Page 23 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual 6.0 Area Detail

6.1 Mitigation Measures Area

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

Category tons/yr MT/yr

Mitigated 0.0490 0.0000 5.3000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.0100e- 1.0100e- 0.0000 0.0000 1.0800e- 004 003 003 003

Unmitigated 0.0490 0.0000 5.3000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.0100e- 1.0100e- 0.0000 0.0000 1.0800e- 004 003 003 003

6.2 Area by SubCategory Unmitigated

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

SubCategory tons/yr MT/yr

Architectural 0.0116 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Coating

Consumer 0.0374 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Products

Landscaping 5.0000e- 0.0000 5.3000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.0100e- 1.0100e- 0.0000 0.0000 1.0800e- 005 004 003 003 003

Total 0.0490 0.0000 5.3000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.0100e- 1.0100e- 0.0000 0.0000 1.0800e- 004 003 003 003 CalEEMod Version: CalEEMod.2016.3.2 Page 24 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

6.2 Area by SubCategory Mitigated

ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total

SubCategory tons/yr MT/yr

Architectural 0.0116 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Coating

Consumer 0.0374 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Products

Landscaping 5.0000e- 0.0000 5.3000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.0100e- 1.0100e- 0.0000 0.0000 1.0800e- 005 004 003 003 003

Total 0.0490 0.0000 5.3000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.0100e- 1.0100e- 0.0000 0.0000 1.0800e- 004 003 003 003

7.0 Water Detail

7.1 Mitigation Measures Water CalEEMod Version: CalEEMod.2016.3.2 Page 25 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

Total CO2 CH4 N2O CO2e

Category MT/yr

Mitigated 4.0406 0.0220 5.3000e- 4.7500 004

Unmitigated 4.0406 0.0220 5.3000e- 4.7500 004

7.2 Water by Land Use Unmitigated

Indoor/Out Total CO2 CH4 N2O CO2e door Use

Land Use Mgal MT/yr

Free-Standing 0.67406 / 4.0406 0.0220 5.3000e- 4.7500 Discount Store 0.413134 004

Other Non- 0 / 0 0.0000 0.0000 0.0000 0.0000 Asphalt Surfaces

Parking Lot 0 / 0 0.0000 0.0000 0.0000 0.0000

Total 4.0406 0.0220 5.3000e- 4.7500 004 CalEEMod Version: CalEEMod.2016.3.2 Page 26 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

7.2 Water by Land Use Mitigated

Indoor/Out Total CO2 CH4 N2O CO2e door Use

Land Use Mgal MT/yr

Free-Standing 0.67406 / 4.0406 0.0220 5.3000e- 4.7500 Discount Store 0.413134 004

Other Non- 0 / 0 0.0000 0.0000 0.0000 0.0000 Asphalt Surfaces

Parking Lot 0 / 0 0.0000 0.0000 0.0000 0.0000

Total 4.0406 0.0220 5.3000e- 4.7500 004

8.0 Waste Detail

8.1 Mitigation Measures Waste CalEEMod Version: CalEEMod.2016.3.2 Page 27 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

Category/Year

Total CO2 CH4 N2O CO2e

MT/yr

Mitigated 7.9451 0.4695 0.0000 19.6836

Unmitigated 7.9451 0.4695 0.0000 19.6836

8.2 Waste by Land Use Unmitigated

Waste Total CO2 CH4 N2O CO2e Disposed

Land Use tons MT/yr

Free-Standing 39.14 7.9451 0.4695 0.0000 19.6836 Discount Store

Other Non- 0 0.0000 0.0000 0.0000 0.0000 Asphalt Surfaces

Parking Lot 0 0.0000 0.0000 0.0000 0.0000

Total 7.9451 0.4695 0.0000 19.6836 CalEEMod Version: CalEEMod.2016.3.2 Page 28 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

8.2 Waste by Land Use Mitigated

Waste Total CO2 CH4 N2O CO2e Disposed

Land Use tons MT/yr

Free-Standing 39.14 7.9451 0.4695 0.0000 19.6836 Discount Store

Other Non- 0 0.0000 0.0000 0.0000 0.0000 Asphalt Surfaces

Parking Lot 0 0.0000 0.0000 0.0000 0.0000

Total 7.9451 0.4695 0.0000 19.6836

9.0 Operational Offroad

Equipment Type Number Hours/Day Days/Year Horse Power Load Factor Fuel Type

10.0 Stationary Equipment

Fire Pumps and Emergency Generators

Equipment Type Number Hours/Day Hours/Year Horse Power Load Factor Fuel Type

Boilers

Equipment Type Number Heat Input/Day Heat Input/Year Boiler Rating Fuel Type

User Defined Equipment

Equipment Type Number CalEEMod Version: CalEEMod.2016.3.2 Page 29 of 29 Date: 2/8/2018 10:14 AM

Dollar General - Siskiyou County, Annual

11.0 Vegetation

Draft Initial Study and Mitigated Negative Declaration Dollar General Retail Store

APPENDIX F

Roadway Noise Calculations

TRAFFIC NOISE LEVELS AND NOISE CONTOURS

Project Number: 2018-017 Project Name: Dollar General

Background Information

Model Description: FHWA Highway Noise Prediction Model (FHWA-RD-77-108) with California Vehicle Noise (CALVENO) Emission Levels. Source of Traffic Volumes: 2016 Traffic Volumes (CalTrans 2017) Community Noise Descriptor: Ldn: x CNEL:

Assumed 24-Hour Traffic Distribution: Day Evening Night Total ADT Volumes 77.70% 12.70% 9.60% Medium-Duty Trucks 87.43% 5.05% 7.52% Heavy-Duty Trucks 89.10% 2.84% 8.06%

Design Vehicle Mix Distance from Centerline of Roadway Analysis Condition Median ADT Speed Alpha Medium Heavy Ldn at Distance to Contour Roadway, Segment Lanes Width Volume (mph) Factor Trucks Trucks 100 Feet 70 Ldn 65 Ldn 60 Ldn 55 Ldn

State Route 3 (Route 263 N to Route 5) 4 0 3,150 40 0.5 1.8% 0.1% 53.7 - - - 82

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ROCKLIN, CA REDLANDS, CA SANTA ANA, CA (916) 782‐9100 (909) 307‐0046 (714) 648‐0630

SAN DIEGO, CA CHICO, CA SANTA FE, NM (858) 279‐4040 (530) 809‐2585 (714) 222‐5932