San Juan Creek Ocean Outfall Junction Structure Rehabilitation Initial Study and Mitigated Negative Declaration

Home , California least tern, Los Angeles River, San Diego River, San Juan Creek

Prepared by:

South Orange County Wastewater Authority 34156 Del Obispo Street, Dana Point, CA 92629 Contact: Janie Chen

SEPTEMBER 2015

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

TABLE OF CONTENTS Section Page No. 1 INTRODUCTION...... 1 1.1 California Environmental Quality Act Compliance ...... 2 1.2 Project Planning Setting ...... 2 1.3 Public Review Process ...... 2 2 SUMMARY OF FINDINGS ...... 3 2.1 Environmental Factors Potentially Affected ...... 3 2.2 Environmental Determination ...... 3 3 INITIAL STUDY CHECKLIST ...... 5 3.1 Aesthetics ...... 11 3.2 Agriculture and Forestry Resources ...... 13 3.3 Air Quality ...... 14 3.4 Biological Resources ...... 19 3.5 Cultural Resources ...... 23 3.6 Geology and Soils ...... 25 3.7 Greenhouse Gas Emissions ...... 27 3.8 Hazards and Hazardous Materials ...... 30 3.9 Hydrology and Water Quality ...... 33 3.10 Land Use and Planning ...... 36 3.11 Mineral Resources ...... 37 3.12 Noise ...... 38 3.13 Population and Housing ...... 40 3.14 Public Services ...... 41 3.15 Recreation ...... 43 3.16 Transportation and Traffic ...... 45 3.17 Utilities and Service Systems...... 48 3.18 Mandatory Findings of Significance ...... 50 4 REFERENCES AND PREPARERS ...... 52 4.1 References Cited ...... 52 4.2 List of Preparers ...... 53

APPENDIX A: Narrative Outline APPENDIX B: CalEEMod Report Annual and Winter APPENDIX C: Biological Resources Letter Report and Impacts Analysis (Dudek, 2015) APPENDIX D: Phase I Cultural Resources Inventory (Dudek, 2015) APPENDIX E: Noise Assessment for the San Juan Creek Junction Structure Rehabilitation (Landrum & Brown, 2015)

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Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

1 INTRODUCTION

The South Orange County Wastewater Authority (SOCWA) is a Joint Powers Authority with ten member agencies. Based out of Dana Point, California, SOCWA operates three treatment plants and two ocean outfalls.

SOCWA’s San Juan Creek Ocean Outfall discharges treated wastewater, known as effluent, from four upstream water reclamation plants:

- City of San Clemente Water Reclamation Plant - SOCWA J.B. Latham Treatment Plant - SMWD/MNWD Plant 3A - Santa Margarita Water District Chiquita Water Reclamation Plant

The land and marine sections of the outfall were constructed in 1979. Both outfall sections were constructed with 57-inch reinforced concrete pipe (RCP). The outfall extends approximately 10,550 feet into the Pacific Ocean. The Junction Structure is located in Doheny State Beach near the outlet of the San Juan Creek to the Pacific Ocean. Typically, the structure is buried beneath the sand at the State Beach, though sometimes it is uncovered and visible to beachgoers. Exhibit 1 and 2 present the regional location and project vicinity, respectively. The Junction Structure is a 10 foot diameter reinforced concrete structure that forms the interface between the land and marine sections of the outfall. The original construction included a reinforced concrete top with a four-foot square, bolted steel access hatch to allowed access into the outfall. In the early 1990’s, the top was modified to increase the maximum internal hydrostatic pressure. This modification project also eliminated the hatch, rendering the Junction Structure inaccessible for internal inspections of the outfall. The Junction Structure currently serves no functional purpose.

In 2006, SOCWA retained Carollo Engineers to evaluate the hydraulic capacity of the San Juan Creek Ocean Outfall. Part of this evaluation included an analysis of the pressure rating of the system. The analysis found structural weakness that could compromise the Junction Structure and possibly result in the spill or unregulated discharge of treated effluent within the San Juan Creek land and ocean outfall. A subsequent finite element analysis of the Junction Structure confirmed the weakness of the structure at the connection points for the 57-inch diameter pipe. Carollo Engineers designed a structural reinforcement to the exterior of the existing structure. Installation of the structure would require excavation to a point 20 feet below sea level. This would require isolation and dewatering of the area around the structure.

To eliminate the need for excavation outside of the Junction Structure and minimize the impact on Doheny State Beach activities, SOCWA retained Black and Veatch to develop and evaluate alternatives for rehabilitating the San Juan Creek Outfall Junction Structure. Black and Veatch recommended Alternative 1B-5: Installing an internal stainless steel (SS) pipe liner through the Junction Structure with external pipe seals on both ends. Important aspects of the project included maximizing construction safety and minimizing disruption to the State Beach.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Black and Veatch retained Dudek to complete Environmental Services for the project. These Environmental Services include obtaining the necessary permits and approval to conduct the project as well as completing a Biological Resources Letter Report and a Cultural Resources Inventory Study to support the project’s CEQA Mitigated Negative Declaration.

1.1 California Environmental Quality Act Compliance

As a local public agency, the South Orange County Wastewater Authority must comply with the California Environmental Quality Act (CEQA, California Public Resources Code §21000, et seq.) when undertaking projects that may either cause a direct or indirect effect on the environment. This Initial Study and Mitigated Negative Declaration were prepared in accordance with CEQA and the CEQA Guidelines (California Code of Regulations §15000, et seq.).

Following the requirements of CEQA, the Initial Study checklist form and explanation discussion format was completed to evaluate the project’s impact on the environment. The explanations identifying environmental effects or lack thereof contain evidence such as facts, documents, or technical studies to support its findings. Any supporting documents referenced in the Initial Study are included in Section 4: References and Preparers.

1.2 Project Planning Setting

The San Juan Creek Ocean Outfall Rehabilitation Project Initial Study and Mitigated Negative Declaration were completed by SOCWA staff with support from Dudek and Black & Veatch.

1.3 Public Review Process

From September 21, 2015 to October 21, 2015, the public, interested parties and all affected agencies are invited to review the Mitigated Negative Declaration and Initial Study, and submit written comments. Written comments should be received prior to, or be submitted verbally during the Public Hearing on November 5, 2015 at the SOCWA Dana Point Administrative Office. Written comments or questions can be submitted to the contact person listed in the Initial Study Checklist.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

2 SUMMARY OF FINDINGS

The following environmental factors will not be impacted by the project: Aesthetics, Agriculture and Forestry Resources, Cultural Resources, Geology and Soils, Hazards and Hazardous Materials, Hydrology and Water Quality, Land Use and Planning, Mineral Resources, Population and Housing, Public Services, Recreation, Transportation and Traffic, and Utilities and Service Systems.

2.1 Environmental Factors Potentially Affected

Though the following environmental factors could be potentially affected by the project, there will be no significant effect on the environment due to the adoption of mitigation measures: Air Quality, Biological Resources, Greenhouse Gas Emissions and Noise.

2.2 Environmental Determination

After careful consideration of state law and CEQA procedures, SOCWA has determined that the San Juan Creek Ocean Outfall Junction Structure Rehabilitation Project will file a Mitigated Negative Declaration (MND) and will not need to prepare an Environmental Impact Report (EIR). This determination is based on the findings that though the environmental factors listed in Section 2.1 could be potentially affected by the project, the adoption of mitigation measures will prevent any significant effects from occurring.

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Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

3 INITIAL STUDY CHECKLIST

A. Project title:

San Juan Creek Ocean Outfall Junction Structure Rehabilitation

B. Lead agency name and address:

South Orange County Wastewater Authority 34156 Del Obispo Street Dana Point, CA 92629

C. Contact person and phone number:

Janie Chen, Environmental Compliance Analyst, (949) 234-5409

D. Project location:

The project proposes to rehabilitate the existing South Orange County Wastewater Authority (SOCWA) San Juan Creek Ocean Outfall Junction Structure. All proposed improvements are located within the Junction Structure. The structure is located at Doheny State Beach in Orange County, California, adjacent to San Juan Creek and approximately 200 feet from the Doheny State Beach Campground. The project will be completed in two phases, Phase I and Phase II, with a construction work area of 1.5 acres and approximately 3.0 acres respectively. The work areas consist of the main construction work site surrounding the Junction Structure, a number of reserved campsites, and access roads at the Doheny State Beach Campground.

The project is located on the U.S. Geological Survey (USGS), 7.5 minute map, Dana Point quadrangle: Section 23; Township 8 South; Range 8 West; latitude 33°27'43.00"N; and longitude 117°40'56.62"W. A map of each work area can be found in Appendix A: Narrative Outline.

E. Project sponsor’s name and address:

South Orange County Wastewater Authority 34156 Del Obispo Street Dana Point, CA 92629

F. General plan designation:

The project site is located at Doheny State Beach, an 86-acre State Recreation Unit of the California Department of Parks and Recreation. Per the Doheny State Beach General Plan & Draft Environmental Impact Report (2003), Doheny State Beach is classified as a State Beach pursuant to Section 5019.56(c) of the California Public Resources Code (PRC).

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

G. Zoning:

Recreation (REC)

H. Description of project. (Describe the whole action involved, including but not limited to later phases of the project, and any secondary, support, or off-site features necessary for its implementation. Attach additional sheets if necessary):

The proposed Project consists of the inspection, assessment, and rehabilitation of the Junction Structure. Located at Doheny State Beach, adjacent to San Juan Creek and approximately 200 feet from the Doheny State Beach Campground, the Junction Structure is a reinforced concrete structure, approximately 10 feet inside diameter by 26 feet tall. The top of the Junction Structure is 15 feet in diameter and has a top elevation of approximately 6.5 feet above MSL. The typical elevation of the beach in the vicinity of the structure is approximately 10 feet above MSL. Temporary excavation of beach sand will therefore be necessary to gain access to the structure for performance of its rehabilitation.

Because the outfall is open to the ocean, it is not feasible to dewater the structure during rehabilitation. The proposed rehabilitation will be completed by divers. To improve worker safety, SOCWA and its member agencies will retain effluent upstream rather than discharge it to the outfall. This flow sequestration can only be performed during low flow periods during early morning hours, and due to storage availability, only for limited periods of time (approximately 4 to 5 hours), after which time the retained flows need to be released to the outfall. Furthermore, these flow sequestrations can only be accomplished once per week. As a result, the rehabilitation project will be carried out in phases with multiple steps over a period of several weeks.

Finally, the sequestrations can only be accomplished during times of year when overall flows into the collection system are lowest. These low flow periods occur typically in the Spring and Fall, after and prior to the rainy season, respectively.

Due to its location on Doheny State Beach, construction work is not allowed between Memorial Day and Labor Day. To accommodate all of these constraints, the Project will be completed in two phases and during Spring or Fall. Phase 1 will consist of an assessment of the condition of the structure, and taking of measurements to allow for custom fabrication of the stainless steel pipe inserts. Phase 2 will be the rehabilitation itself. During the time between phases, the contractor will fabricate the piping and obtain other rehabilitation materials.

Please see the San Juan Creek Ocean Outfall Junction Structure Rehabilitation Narrative Outline (henceforth, Project Narrative) in Appendix A: Narrative Outline.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

I. Surrounding land uses and setting (Briefly describe the project’s surroundings):

The San Juan Creek Ocean Outfall Junction Structure is located in Doheny State Beach, a popular beach used for camping, surfing, and outdoor recreation. The land surrounding the Junction Structure, as well as nearby San Juan Creek, is designated as a State Beach pursuant to Section 5019.56(c) of the California PRC. According to the California PRC, State Beaches are “areas with frontage on the ocean or bays designed to provide swimming, boating, fishing, and other beach-oriented recreational activities.” Doheny State Beach is bound by Pacific Coast Highway and Coast Highway to the northeast, Del Obispo Street and Dana Point Harbor to the west, and the Pacific Ocean to the south. The land surrounding Doheny State Beach is primarily used for residential and commercial development. SOCWA’s administrative office and J.B. Latham Treatment Plant are located approximately 0.5 miles northwest of the Junction Structure project site.

J. Other public agencies whose approval is required (e.g., permits, financing approval, or participation agreement):

California State Parks, California Coastal Commission, Regional Water Quality Control Board, California Dept. of Fish and Wildlife, Army Corps of Engineers, California Coastal Commission, Regional Water Quality Control Board, California Dept. of Fish and Wildlife.

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.

Agriculture and Aesthetics Air Quality Forestry Resources

Biological Resources Cultural Resources Geology and Soils

Hazards and Hydrology and Water Greenhouse Gas Emissions Hazardous Materials Quality

Land Use and Planning Mineral Resources Noise

Population and Housing Public Services Recreation

Utilities and Service Mandatory Findings of Transportation and Traffic Systems Significance

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

DETERMINATION: (To be completed by the Lead Agency)

On the basis of this initial evaluation:

I find that the proposed project COULD NOT have a significant effect on the environment, and a NEGATIVE DECLARATION will be prepared.

I find that although the proposed 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 proposed project MAY have a significant effect on the environment, and an ENVIRONMENTAL IMPACT REPORT is required.

I find that the proposed 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 proposed project could have a significant effect on the environment, because all potentially significant effects (a) have been analyzed adequately in an earlier ENVIRONMENTAL IMPACT REPORT or NEGATIVE DECLARATION pursuant to applicable standards, and (b) have been avoided or mitigated pursuant to that earlier ENVIRONMENTAL IMPACT REPORT or NEGATIVE DECLARATION, including revisions or mitigation measures that are imposed upon the proposed project, nothing further is required.

Signature Janie Chen Date 9/21/2015

Signature Date

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

EVALUATION OF ENVIRONMENTAL IMPACTS:

1) A brief explanation is required for all answers except “No Impact” answers that are adequately supported by the information sources a lead agency cites in the parentheses following each question. A “No Impact” answer is adequately supported if the referenced information sources show that the impact simply does not apply to projects like the one involved (e.g., the project falls outside a fault rupture zone). A “No Impact” answer should be explained where it is based on project-specific factors as well as general standards (e.g., the project will not expose sensitive receptors to pollutants, based on a project-specific screening analysis). 2) All answers must take account of the whole action involved, including off-site as well as on-site, cumulative as well as project-level, indirect as well as direct, and construction as well as operational impacts. 3) Once the lead agency has determined that a particular physical impact may occur, then the checklist answers must indicate whether the impact is potentially significant, less than significant with mitigation, or less than significant. “Potentially Significant Impact” is appropriate if there is substantial evidence that an effect may be significant. If there are one or more “Potentially Significant Impact” entries when the determination is made, an Environmental Impact Report (EIR) is required. 4) “Negative Declaration: Less Than Significant With Mitigation Incorporated” applies where the incorporation of mitigation measures has reduced an effect from “Potentially Significant Impact” to a “Less Than Significant Impact.” The lead agency must describe the mitigation measures, and briefly explain how they reduce the effect to a less than significant level (mitigation measures from “Earlier Analyses,” as described in (5) below, may be cross-referenced). 5) Earlier analyses may be used where, pursuant to the tiering, program EIR, or other CEQA process, an effect has been adequately analyzed in an earlier EIR or negative declaration. Section 15063(c)(3)(D). In this case, a brief discussion should identify the following: a) Earlier Analysis Used. Identify and state where they are available for review. b) Impacts Adequately Addressed. Identify which effects from the above checklist were within the scope of and adequately analyzed in an earlier document pursuant to applicable legal standards, and state whether such effects were addressed by mitigation measures based on the earlier analysis. c) Mitigation Measures. For effects that are “Less than Significant with Mitigation Measures Incorporated,” describe the mitigation measures which were incorporated or refined from the earlier document and the extent to which they address site-specific conditions for the project. 6) Lead agencies are encouraged to incorporate into the checklist references to information sources for potential impacts (e.g., general plans, zoning ordinances). Reference to a previously prepared or outside document should, where appropriate, include a reference to the page or pages where the statement is substantiated.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

7) Supporting Information Sources: A source list should be attached, and other sources used or individuals contacted should be cited in the discussion. 8) This is only a suggested form, and lead agencies are free to use different formats; however, lead agencies should normally address the questions from this checklist that are relevant to a project’s environmental effects in whatever format is selected. 9) The explanation of each issue should identify: a) The significance criteria or threshold, if any, used to evaluate each question; and b) The mitigation measure identified, if any, to reduce the impact to less than significance

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact I. AESTHETICS – Would the project: a) Have a substantial adverse effect on a scenic vista? b) Substantially damage scenic resources including, but not limited to, trees, rock outcroppings, and historic buildings within a state scenic highway? c) Substantially degrade the existing visual character

or quality of the site and its surroundings? d) Create a new source of substantial light or glare which would adversely affect day or nighttime views in the area?

3.1 Aesthetics a) Would the project have a substantial adverse effect on a scenic vista?

Less Than Significant Impact. Doheny State Beach is bound to the northeast by Pacific Coast Highway and Coast Highway, a City designated scenic highway and landscape corridor, respectively. Exhibit 3 presents views of the Junction Structure work area from various viewpoints on these two highways. Exhibits 3a-e demonstrate that very little of the work area is visible from these two routes. Exhibit 3f shows the current view of the Junction Structure work area from the northern Doheny Beach day use area. On the other hand, Exhibit 3g indicates that the project will have a temporary impact on the scenic vista of the Pacific Ocean for visitors within the Doheny Beach Campground due to the installation of fencing and sound reducing barriers around the work area perimeter as well as the staging of construction equipment within the campground. However, this impact will only last the duration of the condition assessment and separate construction process, approximately six weeks each. Construction activities will not occur between Memorial Day and Labor Day, thus avoiding any aesthetic impacts during the summer months when coastal visits are at their highest. b) Would the project substantially damage scenic resources including, but not limited to, trees, rock outcroppings, and historic buildings within a state scenic highway?

Less than Significant Impact. Some of Doheny State Beach is visible from Pacific Coast Highway and Coast Highway, which run along its northeast border. Pacific Coast Highway is designated as a Scenic Highway corridor and Coast Highway is designated as a Landscape Corridor in the Dana Point General Plan, though neither highway is officially designated as a California State Scenic Highway. Furthermore, the completed project is contained within the Junction Structure and does not entail damaging any trees, rock outcroppings or historic buildings. Therefore, seeing as how the project is not located within a state scenic highway nor does it damage scenic resources, impacts would be less than significant.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project c) Would the project substantially degrade the existing visual character or quality of the site and its surroundings?

Less Than Significant Impact. While the visual character or quality of the site and its surroundings may be temporarily impacted during construction due to the installation of temporary sound barriers and fencing, there will be no long-lasting or substantial degradation of the area’s aesthetics. Rehabilitation of the Junction Structure will be contained below ground and the above ground surroundings will be returned to its natural state. d) Would the project create a new source of substantial light or glare which would adversely affect day or nighttime views in the area?

Less Than Significant Impact. Some construction will take place at night and require the brief use of construction lighting. The nearest campsite to project site is Campsite #45, which is located approximately 215 feet from the Junction Structure and will not be significantly impacted by the lighting. The completed project is contained below ground and within the Junction Structure, and will not create a new source of substantial light or glare.

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact II. AGRICULTURE AND FORESTRY RESOURCES – In determining whether impacts to agricultural resources are significant environmental effects, lead agencies may refer to the California Agricultural Land Evaluation and Site Assessment Model (1997) prepared by the California Department of Conservation as an optional model to use in assessing impacts on agriculture and farmland. In determining whether impacts to forest resources, including timberland, are significant environmental effects, lead agencies may refer to information compiled by the California Department of Forestry and Fire Protection regarding the state’s inventory of forest land, including the Forest and Range Assessment Project and the Forest Legacy Assessment project; and forest carbon measurement methodology provided in Forest Protocols adopted by the California Air Resources Board. Would the project: 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? b) Conflict with existing zoning for agricultural use, or

a Williamson Act contract? 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))? d) Result in the loss of forest land or conversion of

forest land to non-forest use?

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No 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?

3.2 Agriculture and Forestry Resources a) Would the project 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?

No Impact. According to the California Department of Conservation Farmland Mapping and Monitoring Program, the Junction Structure Rehabilitation Project site is considered Urban and Built-Up Land and will not convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance to non-agricultural uses. b) Would the project conflict with existing zoning for agricultural use, or a Williamson Act contract?

No Impact. The project is located within Doheny State Beach, an area zoned for recreational use, and will not have any impact on land surrounding the state beach. Therefore the project will not conflict with existing zoning for agricultural use, or a Williamson Act contract. c) Would the project 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))?

No Impact. The project site is not zoned for forest land or timberland uses and therefore will not conflict with existing zoning for, or cause rezoning of, forest land, timberland, or timberland zoned Timberland Production. d) Would the project result in the loss of forest land or conversion of forest land to non-forest use?

No Impact. There is no forest land in the project vicinity and therefore the project will not result in the loss of forest land or conversion of forest land to non-forest use.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project e) Would the project 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?

No Impact. Project impacts are localized within the state beach and will not involve other changes in the existing environment that could result in conversion of Farmland or forest land.

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact III. AIR QUALITY – Where available, the significance criteria established by the applicable air quality management or air pollution control district may be relied upon to make the following determinations. Would the project: a) Conflict with or obstruct implementation of the

applicable air quality plan? b) Violate any air quality standard or contribute substantially to an existing or projected air quality violation? 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)? d) Expose sensitive receptors to substantial pollutant

concentrations? e) Create objectionable odors affecting a substantial

number of people?

3.3 Air Quality a) Would the project conflict with or obstruct implementation of the applicable air quality plan?

Less than Significant Impact. The federal Clean Air Act requires each state not meeting the National Ambient Air Quality Standards (NAAQS) for criteria air pollutants—including ozone,

particulate matter (PM10 and PM2.5), carbon monoxide, lead, nitrogen dioxide, and sulfur dioxide—to develop a State Implementation Plan (SIP) to reach attainment. To better manage air pollution and resources of the State on a regional basis, the State of California was divided into 15 Air Basins. The Junction Structure Rehabilitation Project site is located in the South Coast Air Basin (SCAB), which includes all of Orange County and the non-desert portions of Los Angeles, Riverside, and San Bernardino counties.

The South Coast Air Quality Management District (SCAQMD) is the air pollution control agency responsible for controlling emissions from stationary sources of air pollution within the SCAB. To do so, SCAQMD develops an Air Quality Management Plan (AQMP) to bring the SCAB into attainment with federal air quality standards. Emission projections and control strategies found in

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

the AQMP are developed based on current levels of emissions, local general and development plans, and zoning. The most recent 2012 AQMP demonstrates a comprehensive control strategy for attainment of the federal 24-hour PM2.5 standard by 2014 as well as the 8-hour ozone standard by 2023.

Ozone is not directly emitted into the atmosphere. Rather, it is formed in the atmosphere when

ozone precursor gases—Oxides of Nitrogen (NOx) and volatile organic compounds (VOCs)— chemically react in the presence of sunlight. For attainment of the 8-hour ozone standard, it is vital to control emissions of these ozone precursor gases.

Achieving attainment and implementing the AQMP is a difficult challenge due to a number of constraints. First, the SCAQMD covers an area of approximately 10,743 square miles with a topography and climate that is conducive to high air pollution. Secondly, the SCAB has experienced significant population growth that is expectedly to continue through 2023 and beyond. Though air quality has improved over the years due to the implementation of pollution controls, increases in population make continued emission reductions more difficult.

The project is located in Doheny State Beach, an area zoned for recreation. Because the completed rehabilitation is contained within the Junction Structure and will not make any permanent changes to the surrounding beach, the project will not change this zoning designation. The project also will not generate additional development in the area through the creation of new jobs or new residences. Therefore, the project will not conflict with local or regional plans nor obstruct implementation of the SCAQMD 2012 AQMP. See Appendix B: CalEEMod Report for a complete report of the project’s projected emissions. b) Would the project violate any air quality standard or contribute substantially to an existing or projected air quality violation?

Less than Significant Impact. The California Emissions Estimator Model (CalEEMod 2013.2.2.), a statewide land use emissions computer model, was used to evaluate the project’s potential impacts to air quality and quantify projected emissions generated by the construction process. Emissions from long-term operations were not calculated because the completed rehabilitation project will not involve routine daily operational activities that would generate any air pollutants following completion of construction. Construction emissions were calculated based on the major emission-generating equipment that would be used in the rehabilitation project.

To assist CEQA practitioners in evaluating the significance of air quality impacts from projects with daily emissions, SCAQMD provides a table of Air Quality Significance Thresholds. Thresholds of significance for construction impacts consider emissions in terms of pounds per day. A summary of the results from the CalEEMod are in the table below.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Table 3-1: Construction Emissions and Thresholds

Construction Project Threshold of CalEEMod Exceeds Pollutant Significance for Result Threshold? South Coast Basin (lbs/day) (lbs/day)

Carbon Monoxide 25.21 550 No (CO)

Oxides of 35.09 100 No Nitrogen (NOx)

Coarse Particulate 2.99 150 No

Matter (PM10)

Fine Particulate 2.18 55 No Matter (PM2.5)

Volatile Organic Compounds 3.6 75 No (VOCs)

Sulfates (SOx) 0.04 150 No

As indicated by Table 3-1, construction emissions will be well below the SCAQMD construction thresholds of significance. Therefore the project will not contribute to an air quality violation. c) Would the project 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)?

Less than Significant Impact. The Junction Structure is located within the South Coast Air Basin, overseen by the South Coast Air Quality Management District. The air basin is designated ‘non- attainment’ status for ozone and particulates (PM10 and PM2.5) by the State (California Air Resources Board (CARB)) and U.S. EPA. Projects that emit these pollutants or their precursors

(e.g., VOC and NOx for ozone) potentially contribute to poor air quality. As indicated by Table 3- 1, air pollutant emissions will be well below the SCAQMD construction thresholds of significance throughout the construction process. After completion, the rehabilitated Junction

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Structure is not anticipated to releasing any long-term, operational emissions. Therefore the project will not result in a cumulatively considerable net increase of any criteria pollutants. d) Would the project expose sensitive receptors to substantial pollutant concentrations?

Less Than Significant Impact. According to the U.S. EPA, sensitive receptors are “areas where the occupants are more susceptible to the adverse effects of exposure to toxic chemicals, pesticides and other pollutants” (U.S. EPA). Such individuals with the greatest sensitivity to air pollution include children, the elderly, and the acutely and chronically ill. The Junction Structure construction site is located within Doheny State Park, an area with possible sensitive receptors. Campground users will be located within 1000 feet of the construction site and could be exposed to toxic diesel PM emissions from construction equipment—such as a bulldozer, rough terrain crane, wheel-loader, portable electric generators and industrial saws.

Use of diesel construction equipment will be brief. According to the San Juan Creek Ocean Outfall Junction Structure Rehabilitation Project Proposed Construction Sequence, diesel equipment will only be used for approximately 10 days during the condition assessment and 14 days during the construction. In order to further reduce any toxic diesel PM or fugitive dust impacts, diesel idling for this equipment will not be permitted.

Localized Significance Thresholds (LSTs) were developed in response to Governing Board’s Environmental Justice Enhancement Initiative I-4 and are applicable to the following criteria pollutants: oxides of nitrogen (NOX), carbon monoxide (CO), and particulate matter (PM10 and PM2.5). Use of LSTs to evaluate ambient air quality on a local level is voluntary.

LST mass rate look-up tables are available for 25, 50, 100, 200 and 500 meter source-receptor distances, and one-, two-, and five-acre sites. According to Appendix A: Narrative Outline, the nearest sensitive receptor to the project construction site is Campsite #45, located approximately 65.6 meters (215 feet) from the Junction Structure construction site. Though the project work area is approximately 1.5 acres during Phase I and approximately three acres during Phase II, construction equipment use will be contained within the 0.05 acre (2250 sq. ft.) construction site. The project work area is located within the Capistrano Valley Source Receptor Area (SRA 21). Therefore, the LST thresholds used to determine air quality impacts on nearby sensitive receptors are based on a one acre construction site located in SRA 21 and a 50 meter source-receptor distance.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Table 3-2: Construction Emissions and Localized Significance Thresholds

LST 1.0 acres/ 50 meters Pounds per Day

CO NO2 PM10 PM2.5 Capistrano Valley 833 93 11 4

Average Max On-Site 8.70 13.7 1.36 0.86 Emissions

As seen in Table 3-2 above, LSTs for the nearest sensitive receptor were compared to the maximum daily onsite construction activities. All emissions are below the LST thresholds for construction. e) Would the project create objectionable odors affecting a substantial number of people?

Less Than Significant Impact. The project aims to install a pipe liner within the Junction Structure. The Junction Structure serves as the interface between the land and marine sections of the San Juan Creek outfall. Treated wastewater effluent flows through the Junction Structure as it is discharged to the Pacific Ocean. Visitors at Doheney State Beach are unable to detect any odors associated with the Junction Structure because the structure is enclosed. Furthermore, having gone through significant treatment, this wastewater effluent has only a slight odor or no odor at all.

At the beginning of the construction process, the Junction Structure will be excavated and an opening will be cut into the concrete roof slab to access the inside of the structure. A watertight cover will be installed over the opening to keep the Junction Structure enclosed. There will be approximately six instances during construction in which the watertight cover will be removed to conduct work within the Junction Structure for approximately 4-5 hours at a time. During this time, treatment plants upstream will retain their effluent flows onsite. No effluent will be discharged through the Junction Structure. Therefore, even though the Junction Structure will be open and uncovered, little to no odor will be detectable by visitors at Doheny State Beach.

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact IV. BIOLOGICAL RESOURCES – Would the project: 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 Game or U.S. Fish and Wildlife Service?

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No 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 Game or U.S. Fish and Wildlife Service? 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 removal, filling, hydrological interruption, or other means? 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? e) Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance? 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?

3.4 Biological Resources a) Would the project 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 Game or U.S. Fish and Wildlife Service?

Less Than Significant Impact with Mitigation Incorporated. A biological resources letter report was prepared by Dudek to evaluate the existing biological conditions of a 6.00-acre project study area containing the Junction Structure Rehabilitation project site (Dudek, 2015a, Appendix C). The letter serves as an update to a 2007 biological resource evaluation of the same project study area. The report analyzed the potential impact of the Junction Structure project on the area’s biological resources as well as outlines mitigation measures (MMs) to reduce identified and potential significant impacts to a level that is less than significant in accordance with the California Environmental Quality Act (CEQA), Clean Water Act (CWA), Migratory Bird Treaty Act (MBTA), and California Fish and Game Code. The study included a review of pertinent biological resource regulations, field survey, mapping of vegetation communities and land cover within the project study area, an evaluation of jurisdictional waters of the U.S., and an evaluation of the potential for special-status species to occur in the project site.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

No special-status plants were detected in the project study area during the 2007 and 2014 site surveys. Due to the lack of suitable substrate and tidal influences, the potential for special-status plants to occur on site is low and therefore no significant direct or indirect impacts to special- status plants are anticipated.

All raptor species are considered special-status and may use the site for foraging. However, though the trees within the campground were documented as having a high potential to support nesting raptors, there is no suitable habitat for them in the impact footprint. Therefore, there are no expected direct impacts on nesting raptors.

Out of eight special-status wildlife species considered to have a moderate or high potential to occur in the project study area, only two species—the western snowy plover and California least tern—have potential to occur in the impact footprint. Seeing as how the work is scheduled to occur during the combined breeding season for these species (April to Mid-September), the project could have potential significant direct impacts to ground-nesting individuals. Construction-related noise could also have potential significant non-direct impacts on breeding wildlife. The project will engage the mitigation measures listed below to ensure that no significant impacts occur.

Mitigation Measure I: To avoid direct impacts to the western snowy plover and California least tern, a qualified biologist shall conduct a pre-construction survey for these species within 72 hours prior to any construction-related activities occurring in the project footprint during the combined breeding season for these species (March 15- September 15).

a. If no nesting western snowy plover or California least terns are found to be present within areas up to 500 feet of the proposed project footprint, then project construction may proceed without restrictions.

b. If nesting western snowy plover or California least terns are found on site or in off- site bordering areas, construction within 500 feet shall not commence until temporary noise barrier(s) are in place between the construction area and occupied habitat. The location of the noise barrier(s) shall be determined by the biologist and acoustician. Construction noise levels shall be monitored at the edge of occupied habitat with the noise barrier(s) in place. Other measures shall be implemented, as necessary, to reduce noise levels to below 60 dB(A), or to the ambient noise level if it already exceeds 60 db(A) at the edge of the occupied habitat.

c. Construction noise shall be monitored by SOCWA at least twice weekly to verify that noise at the edge of the occupied habitat is maintained below 60 dB(A), or to the ambient noise level if it already exceeds 60 db(A). If this requirement cannot be met, other measures shall be implemented as necessary, to reduce noise levels to below 60 dB(A), or to the ambient noise level if it already exceeds 60 db(A). Such measures

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

may include, but are not limited to, modifying the placement of construction equipment and limitations on the simultaneous use of equipment.

Mitigation Measure II: To avoid indirect impacts to breeding songbirds, shorebirds and raptors due to construction-related noise, a one-time biological survey for nesting bird species, including raptors, shall be conducted within 72 hours prior to construction to identify any active nesting if construction activities occur during the combined bird breeding season (i.e., February 15–August 31 for most bird species; and January 1–August 31 for raptors). If occupied nests are present within 500 feet of the construction area, a buffer shall be established between the work site and active nest so that nesting activities are not interrupted. The buffer shall be delineated in the field by installing temporary fencing and shall remain intact throughout the maintenance work or until the nest is no longer active. The buffer width will be determined by the Project Biologist and will take into consideration species sensitivity and localized conditions (e.g., width and type of screening vegetation between the nest and proposed activity, terrain, existing level of human activity within the buffer, and in the surrounding area). b) Would the project 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 Game or U.S. Fish and Wildlife Service?

Less Than Significant Impact with Mitigation Incorporated. State and federal law regulates impacts to waters of the U.S./State, including wetlands. SOCWA will be required to obtain a Section 404 Nationwide Permit from the USACE, Section 401 Water Quality Certification from the RWQCB, a Section 1602 Lake and Streambed Alteration Agreement from CDFW, and a Coastal Development Permit (CDP) from the CCC prior to construction.

The Dudek biological resources letter report (Dudek, 2015a) indicates that approximately 2.43 acres of jurisdictional waters of the U.S. and State, including wetlands, occur within the project study area. Rehabilitation of the junction structure and equipment access to the work site will result in temporary direct impacts to 0.04 acre open water, 0.48 acre sandy beach habitat, and 0.0012 acre urban/developed land. These temporary direct impacts are considered significant and will be mitigated so that no permanent impacts are proposed.

Adjacent riparian habitats may experience short-term, indirect impacts such as dust, increased human presence and changes in water runoff. Typical construction Best Management Practices (BMPs) and a Storm Water Management Plan (SWMP) will limit these impacts. Therefore, short- term indirect impacts to off site, adjacent special-status vegetation communities are considered less than significant.

Mitigation Measure III: SOCWA shall ensure that temporary disturbance areas shall be restored to pre-construction contours and conditions at a 1:1 ratio.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project c) Would the project 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 removal, filling, hydrological interruption, or other means?

Less Than Significant Impact with Mitigation Incorporated. Per response 3.4-b, the Junction Structure Rehabilitation Project will result in temporary direct impacts to open water associated with San Juan Creek, sandy beach associated with the Pacific Ocean shoreline, and urban/developed land. Impacts to urban/developed land are not significant and do not warrant habitat mitigation. While no impacts to wetlands as defined by Section 404 of the federal Clean Water Act will occur due to project implementation, direct, temporary impacts to non-wetland waters of the U.S. subject to regulation by the USACE, RWQCB, CDFW, and CCC including 0.04 acre open water and 0.48 acre sandy beach, will occur due to project implementation. Non-wetland waters are regulated under Section 404 of the federal Clean Water Act and Section 10 of the Rivers and Harbors Act. Impacts to these resources would be mitigated to a level that is less than significant with the incorporation of Mitigation Measure III listed above in Section 3.4-b. d) Would the project 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?

Less Than Significant Impact. According to the Dudek biological resources letter report (Dudek, 2015a), the surrounding areas to the east and west of the project site contain mixed commercial/residential development and beach and areas to the north contain mixed commercial/residential development and heavily used roadways—none of which are conducive to wildlife movement or migration. The floodplain of San Juan Creek, located west of the project site, potentially serves as a local and regional wildlife corridor between upstream and downstream area. However, the Junction Structure Rehabilitation project will not permanently nor significantly impact this floodplain or its use as a wildlife corridor. Any project impacts on the area will be temporary and less than significant. e) Would the project conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance?

No Impact. The marine resources at Doheny State Park are protected by the Doheny Beach State Marine Conservation Area. However, the Junction Structure Rehabilitation Project is contained within the designated work area and will not impact any marine resources within Doheny State Beach. There are no other local policies or ordinances regarding biological resource protection that pertain to the project site.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project f) Would the project conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan?

No Impact. Established in 1991, the Natural Communities Conservation Plan aims to provide long-term, regional protection of natural vegetation and wildlife while allowing compatible development and growth. Part of the City of Dana Point is located within the Southern Subregion of the Central Coastal NCCP. However, the boundaries for the Central Coast NCCP fall directly to the west of Doheny State Beach. The project site is not located within the Southern Subregion of the Central Coastal NCCP nor the Southern Subregion’s habitat reserve and therefore would not conflict with any of its policies or ordinances.

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact V. CULTURAL RESOURCES – Would the project: a) Cause a substantial adverse change in the significance of a historical resource as defined in §15064.5? b) Cause a substantial adverse change in the significance of an archaeological resource pursuant to §15064.5? c) Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature? d) Disturb any human remains, including those

interred outside of formal cemeteries?

3.5 Cultural Resources a) Would the project cause a substantial adverse change in the significance of a historical resource as defined in §15064.5?

Less Than Significant Impact. A Phase I cultural resources inventory was conducted by Dudek for the San Juan Creek Ocean Outfall Junction Structure Rehabilitation Project (Dudek, 2015b, Appendix D). The inventory included a South Central Coastal Information Center (SCCIC) records search for cultural resources recorded within the area of potential effects (APE), a Native American Heritage Commission (NAHC) Sacred Lands File (SLF) search and subsequent correspondence with tribal representatives for the presence of any Native American cultural resources, as well as an intensive pedestrian survey of the APE for any further cultural resources. All three searches indicate that there are no cultural resources within, or immediately surround, the APE. It also suggests that there is no potential for the discovery of cultural resources because the beach sand located within the APE was deposited subsequent to the initial installation of the Junction Structure and is not suitable to support the presence of intact cultural deposits.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Mitigation Measure IV: Though no cultural mitigation is required, if subsurface cultural resources are encountered during construction activities, work in the immediate vicinity will be stopped and SOCWA contacted. A qualified archaeologist will be retained to evaluate the archaeological discovery for its eligibility for Local and State listing. As appropriate, reports of the discovery will be made to the Native American Heritage Commission. If human remains are found, action will be taken according to Section 15064.5(e) of CEQA and the County Coroner will be notified. b) Would the project cause a substantial adverse change in the significance of an archaeological resource pursuant to §15064.5?

No Impact. The project will not cause a substantial adverse change in the significance of any archaeological resources for reasons stated in response 3.5-a.

c) Would the project directly or indirectly destroy a unique paleontological resource or site or unique geologic feature?

No Impact. The California Department of Parks and Recreation Doheny State Beach General Plan & Draft Environmental Impact Report indicates that there are no unique paleontological resources or site or unique geologic features within the project site.

d) Would the project disturb any human remains, including those interred outside of formal cemeteries?

No Impact. Please see response 3.5-a.

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact VI. GEOLOGY AND SOILS – Would the project: 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?

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact b) Result in substantial soil erosion or the loss

of topsoil? 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? 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? 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?

3.6 Geology and Soils a) Would the project 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.

No Impact. According to the State of California Department of Conservation’s Regional Geologic Hazards and Mapping Program, Doheny State Beach and the City of Dana Point are located in a State of California Earthquake Fault Zone. There are no known active seismic faults within the project site. Therefore, the project will not expose people or structures to any potential substantial adverse effects resulting from rupture of a known earthquake fault.

ii) Strong seismic ground shaking?

While seismic ground shaking could happen in the project site, the project itself will not expose people or structures to potential adverse effects because the Junction Structure is primarily located beneath the sand on Doheny State Beach.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

iii) Seismic-related ground failure, including liquefaction?

No Impact. The State of California Seismic Hazard Zones map (CDMG, 2001) identifies Doheny State Beach as located within a liquefaction hazard zone. However, seeing as how the Junction Structure is located below ground, the project itself will not expose people or structures to potential substantial adverse effects from liquefaction.

iv) Landslides?

No Impact. The Junction Structure project site is located on a flat terrain in Doheny State Beach. Furthermore, according to the State of California Seismic Hazard Zones Map, the project site is not located within a landslide hazard zone. Therefore, there is no potential for landslide hazards at the project site. b) Would the project result in substantial soil erosion or the loss of topsoil?

No Impact. The temporary work activities include excavation of soil to the top of the Junction Structure. This work activity will need to be coordinated with a low-tide event or events to help take advantage of the lower tide levels at the excavation area. The storage area for excavated material or beach sand is considered minimal due to limited required excavation anticipated to the top of the Junction Structure. Following construction, the existing stockpiled material will be used to backfill the excavation. No soil or sand will be exported out of the construction site. c) Would the project 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?

No Impact. The finished rehabilitation project is contained completely within the existing Junction Structure. Though the Junction Structure project site is located on sand, the rehabilitation project will not cause the surrounding sand to become unstable and result in landslides, lateral spreading, subsidence, liquefaction or collapse.

During the construction process, excavation of sand from the top of the Junction Structure is required to gain access to the Junction Structure. Appropriate safety measures will be required to prevent collapse of excavated sand and to ensure the safety of divers within the structure as well as construction crew members within the work area. Such safety measures will be determined by the contractor.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project d) Would the project 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?

No Impact. The project site is located within Doheny State Beach, where the soil onsite is predominately sand. There is no expansive soil in the project site that could create risks to life or property. e) Would the project 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?

No Impact. The project description does not involve septic tanks or alternative waste water disposal systems.

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact VII. GREENHOUSE GAS EMISSIONS – Would the project: a) Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment? b) Conflict with an applicable plan, policy or regulation adopted for the purpose of reducing the emissions of greenhouse gases?

3.7 Greenhouse Gas Emissions a) Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment?

Less Than Significant Impact. In response to increasing emissions of greenhouse gases (GHG) and its impact on global climate change, the Governor of California passed AB 32, California’s Global Warming Solutions Act of 2006. The Act requires CARB to implement the following:

• a statewide GHG emissions cap for 2020 based on 1990 emission; • mandatory reporting rules for significant sources of GHGs; • early action measures to reduce GHG; • a scoping plan indicating how emission reductions will be achieved via regulations, market mechanisms, and other actions; • and any other regulations needed to achieve the maximum technologically feasible and cost-effective reductions in greenhouse gases.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

AB 32 required that the State Board approve a statewide GHG emissions limit, based on the statewide GHG inventory in 1990, to be achieved by 2020. As of right now, no statewide threshold has been established. On December 5, 2008, the SCAQMD Governing Board adopted an interim GHG significance

threshold of 10,000 MT/year CO2e to apply toward industrial projects where AQMD is the lead agency.

CO2e, the CO2 equivalent for a gas, is derived by multiplying the mass of the gas by the associated global warming potential. The SCAQMD formed a GHG CEQA Significance Threshold Working Group to work with SCAQMD staff on developing GHG CEQA significance thresholds until statewide significance thresholds or guidelines are established and proposed three tiers of compliance that may lead to a determination that impacts are less than significant. The most recent working group meeting on September 28, 2010 (SCAQMD 2010), proposed two options lead agencies can select from to screen thresholds of significance for GHG emissions in residential and commercial projects, and proposes to expand the industrial threshold to other lead agency industrial projects. Option 1 proposes a threshold of

3,000 MT CO2e per year for all residential and commercial projects and Option 2 proposes a threshold

value by land use type where the numeric threshold is 3,500 MT CO2e per year for residential projects,

1,400 MT CO2e per year for commercial projects, and 3,000 MT CO2e per year for mixed-use projects (SCAQMD 2010).

The California Air Pollution Control Officers Association (CAPCOA) published a white paper in January 2008 evaluating and addressing GHG emissions from projects subject to CEQA. The CAPCOA CEQA and Climate Change “white paper” is intended as a resource and not a guidance

document. A significance threshold of 900 MT CO2e per year was the lowest non-zero threshold evaluated in the white paper; this threshold would apply to industrial, residential, and commercial projects. SOCWA has decided to evaluate the Junction Structure Rehabilitation Project’s GHG

emissions against a GHG significance threshold of 900 MT CO2e.

CalEEMod 2013.2.2 was used to quantify the project’s projected greenhouse gas (GHG) emissions generated by the construction process. GHG emissions—carbon dioxide, methane, and nitrous oxide—were calculated based on the type of equipment to be used during construction. The principle source of greenhouse gas emissions will be diesel-powered construction equipment and other combustion sources (generators and vehicles) emitting carbon dioxide. The project’s

annualized construction emission in terms of CO2e units, which include emissions of carbon dioxide, methane and nitrous oxide, is 281.84 MT/year. For a complete report of the project’s projected GHG emissions, please see Appendix B: CalEEMod Report.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Table 3-3: Estimated Annual Construction GHG Emissions

Greenhouse Gas Emissions (MT/yr)

Carbon Dioxide (CO2) 280.09

Methane (CH4) 0.08

Nitrous Oxide (N2O) 0

CO2eq 281.84

CO2eq - CAPCOA Lowest Non-Zero Threshold 900

As shown in Table 3-3, project-generated annual GHG emissions are anticipated to be well below

the annual threshold value of 900 MT CO2e evaluated by CAPCOA. While the CAPCOA threshold has not been adopted by CARB, SCAQMD, or other air quality agencies, it is the lowest non-zero GHG significance threshold that has been evaluated in California. The Junction Structure Rehabilitation Project annualized construction emissions will have minimal impact on the environment. b) Conflict with an applicable plan, policy or regulation adopted for the purpose of reducing the emissions of greenhouse gases?

No Impact. In 2011, the City of Dana Point developed an Energy Efficiency and Conservation Plan to identify goals and measures to reduce energy consumption and promote resource conservation within Dana Point. Part of the plan focuses on encouraging sustainable construction through green building practices. However, the two green building regulations—Part 11 of CALGreen and Part 6 of the California Energy Code—to be applied toward Dana Point development only pertain to residential and non-residential building and are not applicable to the Junction Structure Rehabilitation Project. The City of Dana Point does not have any other climate change policies or programs.

Orange County and SCAQMD also do not have a GHG reduction plan or climate action plan for the SCAB. Therefore, the project will not conflict with any applicable greenhouse gas reduction plans, policies or regulations.

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact VIII. HAZARDS AND HAZARDOUS MATERIALS – Would the project: a) Create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials?

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No 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? c) Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste

within one-quarter mile of an existing or proposed school? d) Be located on a site that 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? 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? f) For a project within the vicinity of a private airstrip, would the project result in a safety hazard for people residing or working in the project area? g) Impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan? 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?

3.8 Hazards and Hazardous Materials a) Would the project create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials?

Less Than Significant Impact. The project will require the temporary transport, use, and disposal of hazardous materials during the rehabilitation construction process. These could include fuels for machinery and vehicles, new and use motor oils, cleaning solvents, and storage containers and applicators containing such materials. Transport will occur in accordance with procedures established by the Department of Transportation. Accident prevention and containment are the responsibility of the construction contractors. However, provisions to properly manage hazardous substances and wastes are included in SOCWA’s construction specifications. SOCWA also monitors all contractors for compliance with regulations applicable to hazardous materials and wastes. In adhering to SOCWA’s construction specifications and pertinent regulations regarding

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

hazard materials and waste, the rehabilitation project will not create a permanent or significant hazard to the public or the environment. b) Would the project 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?

No Impact. Rather than create a significant detrimental impact through the release of hazardous materials, the project actually aims to prevent such a hazard from occurring. As the interface between the land and marine sections of the San Juan Creek Ocean Outfall, the Junction Structure’s structural integrity is vital for the safe discharge of treated wastewater effluent. While the Junction Structure serves no functional purpose, deterioration of the structure could result in effluent leaking or spilling into the Doheny State Beach area. The project aims to strengthen the Junction Structure and prevent any structural failure from occurring. Therefore, the project is vital for preventing the release of treated effluent into the environment and any subsequent hazards to the public or the environment. c) Would the project emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one-quarter mile of an existing or proposed school?

No Impact. The closest school to the proposed project is the Capo Beach Christian School, approximately 0.40 miles northeast of the project site. Since the closest school is greater than one-quarter mile away from the project site, no project impact would exist. d) Would the project be located on a site that 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?

No Impact. The Department of Toxic Substances Control (DTSC) ENVIROSTOR database indicates that the project site is not located on any hazardous materials sites compiled pursuant to Government Code Section 65962.5. Therefore the project will not create a significant hazard to the public or the environment. 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?

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project f) For a project within the vicinity of a private airstrip, would the project result in a safety hazard for people residing or working in the project area?

No Impact. The closest airport to the proposed project is John Wayne Airport, located approximately 18 miles to the northwest. Therefore the project is not located within an airport land use plan and will not result in a safety hazard for people residing or working in the project area. g) Would the project impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan?

No Impact. Doheny State Beach employs park rangers and lifeguard staff for emergencies and follows the Dana Point Emergency Plan, a framework for responding to major emergencies, such as tsunamis, flooding, or earthquakes. The project would not impair tsunami evacuation routes nor interfere with the AlertOC Public Notification System used to issue emergency messages to residents. Therefore, the project would not impair or physically interfere with an adopted emergency response plan or emergency evacuation plan. h) Would the project 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?

No Impact. The project site is not located within or adjacent to a wildland area. Therefore the project would not expose people or structures to a significant risk of loss, injury or death involving wildland fires.

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact IX. HYDROLOGY AND WATER QUALITY – Would the project: a) Violate any water quality standards or waste

discharge requirements? 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)? 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 which would result in substantial erosion or siltation on- or off-site?

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No 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 which would result in flooding on- or off-site? 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? f) Otherwise substantially degrade water quality? 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? h) Place within a 100-year flood hazard area structures

which would impede or redirect flood flows? 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? j) Inundation by seiche, tsunami, or mudflow?

3.9 Hydrology and Water Quality a) Would the project violate any water quality standards or waste discharge requirements?

No Impact. The purpose of the project is to improve the structural integrity of the existing Junction Structure and the SOCWA San Juan Creek Ocean Outfall. The outfall operates within the water quality standards and waste discharge requirements of NPDES Permit Order No. R9- 2012-0012. The rehabilitation project will not cause the outfall to violate any NPDES permit requirements.

Because the outfall is open to the ocean, it is not feasible to dewater the structure during rehabilitation. The proposed rehabilitation will be completed by divers working on the inside of the structure. To improve worker safety, SOCWA and its member agencies will retain effluent upstream at its treatment plants rather than discharge it to the outfall. This flow sequestration can only be performed during low flow periods during early morning hours, and due to storage availability, only for limited periods of time (approximately 4 to 5 hours), after which time the retained flows need to be released to the outfall. According to the construction schedule, flow sequestration will occur approximately six times—twice during Phase I and four times during Phase II. SOCWA and its member agencies will ensure that the treatment plants retaining flow will do so following NPDES Permit requirements and standards.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project b) Would the project 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 (i.e., the production rate of pre-existing nearby wells would drop to a level that would not support existing land uses or planned uses for which permits have been granted)?

No Impact. The project will not affect groundwater recharge or aquifers. No portion of the project is within a Sole Source Aquifer area. c) Would the project 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 which would result in substantial erosion or siltation on- or off-site?

No Impact. All aspects of the project are contained within the Junction Structure and will not substantially alter the existing drainage pattern of the area in a manner that would result in substantial erosion or siltation. Furthermore, the project will not alter the course of the adjacent San Juan Creek. d) Would the project 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 which would result in flooding on- or off-site?

No Impact. Rehabilitation of the Ocean Outfall Junction Structure is contained within the structure and will not alter existing drainage patterns or the course of a stream or river, especially that of the nearby San Juan Creek. According to the Project Narrative, the project will not create additional impervious surfaces and thereby will not create or contribute to an increase in runoff. e) Would the project 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?

No Impact. The project description indicates that construction will remain within the Junction Structure and will not create features that will create or contribute runoff water. Therefore the project will have no impact on the capacity of existing or planned stormwater drainage systems. f) Would the project otherwise substantially degrade water quality?

Less Than Significant Impact. The Dudek biological resources letter report (Dudek, 2015a) indicates that the project could potentially change the velocity of runoff in the project area and temporarily affect shoreline habitats associated with the Pacific Ocean and San Juan Creek, including erosion and sedimentation. To minimize these effects, the project will require contractors to develop and utilize a Storm Water Management Plan (SWMP) or similar report to

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

meet National Pollution Discharge Elimination System (NPDES) regulations. Therefore, impacts to water quality of nearby waterbodies will be considered less than significant. g) Would the project 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 Impact. The project’s intent is to rehabilitate the San Juan Creek Ocean Outfall Junction Structure and does not involve constructing housing of any kind. Therefore, the project would not place housing within a 100-year flood hazard area.

h) Would the project place within a 100-year flood hazard area structures which would impede or redirect flood flows?

No Impact. The project site is located within an area designated by FEMA as Zone AE, a special flood hazard area “subject to inundation by the one-percent-annual-chance flood event.” Though the project site is located within a 100-year flood hazard area, the project does not include placing structures which would impede or redirect flood flows in the vicinity.

i) Would the project 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?

No Impact. The project is contained within the Junction Structure and would not expose people or structures to any significant risk involving flooding.

j) Inundation by seiche, tsunami, or mudflow?

Less Than Significant Impact. The project site is located within a sand beach with little to no threat of mudflow. There are no enclosed bodies of water located nearby; therefore there would be no risk for seiche. The project site is located within a tsunami hazard zone, though tsunamis are rare and a tsunami evacuation route is nearby. Therefore, the project impact would be less than significant.

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact X. LAND USE AND PLANNING – Would the project: a) Physically divide an established community? 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?

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact c) Conflict with any applicable habitat conservation

plan or natural community conservation plan?

3.10 Land Use and Planning a) Would the project physically divide an established community?

No Impact. The project site is contained within the San Juan Creek Ocean Outfall Junction Structure and its surrounding staging area within Doheny State Park. The project would not physically divide an established community. b) Would the project 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?

No Impact. According to the City of Dana Point Zoning Map and General Plan Land Use Map, the Doheny State Beach is considered Recreation (REC) space. The project is contained within the San Juan Creek Ocean Outfall Junction Structure and will not create any changes to land use within or around the project site. The surrounding Doheny Beach area will remain a recreational state beach. Therefore the project will not conflict with any applicable land use plan, policy, or regulation of an agency with jurisdiction over the project. c) Would the project conflict with any applicable habitat conservation plan or natural community conservation plan?

No Impact. Please see response 3.4-f. Though there are ongoing efforts in the San Juan Creek watershed to develop a Natural Community Conservation Plan/Habitat Conservation Plan (NCCP/HCP), currently there are no designated NCCP/HCP areas in Doheny State Beach. Parts of the City of Dana Point are part of the Southern Subregion of the Central Coastal NCCP. However, Doheny State Beach and the project site fall right outside the NCCP border. Therefore, the project will not conflict with any NCCP/HCP plans.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact XI. MINERAL RESOURCES – Would the project: 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? 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?

3.11 Mineral Resources

a) Would the project 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?

No Impact. According to the City of Dana Point’s General Plan Conservation/Open Space Element, there are no mineral resources identified within the City of Dana Point. Therefore the project would not result in the loss of availability of a known mineral resource.

b) Would the project 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?

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact XII. NOISE – Would the project result in: a) 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? b) Exposure of persons to or generation of excessive

groundborne vibration or groundborne noise levels? c) A substantial permanent increase in ambient noise levels in the project vicinity above levels existing without the project? d) A substantial temporary or periodic increase in ambient noise levels in the project vicinity above levels existing without the project?

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No 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? 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?

3.12 Noise

a) Would the project 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?

Less Than Significant Impact with Mitigation Incorporated. A Construction Noise Assessment was conducted by Landrum & Brown on behalf of SOCWA (Landrum & Brown, 2015, Appendix E). According to the assessment memo, the Doheny State Park General Plan does not have any specific noise standards that would apply to the project. Instead, the noise levels generated by the Junction Structure Rehabilitation Project must meet the City of Dana Point’s Noise Ordinance limit stated in the city’s General Plan. Due to the fact that some of the rehabilitation project will occur at night, the project must meet the more stringent nighttime Noise Ordinance limit of 50 dBA L50.

As part of the construction process, a large number of campsites near the work area will be reserved and not available for public use (Appendix A). This serves to improve visitor safety, minimize construction traffic within the campground, and reduce noise impacts on nearby campsites. A 15 foot high temporary noise barrier is also planned at the north and east boundaries of the work area. The nearest campsite that could be impacted by construction noise is Campsite #45, which is located approximately 215 feet from the Junction Structure.

Noise measurements for the Construction Noise Assessment were conducted between 2:15 AM and 3:15 AM on May 3, 2015 near Campsite #45 to determine ambient noise levels. Predicted noise levels at the project site for the equipment planned for use were obtained from the Roadway Construction Noise Model (RCNM Version 1.1) developed by the Federal Highway Administration (FHWA). Using a combination of empirical data, acoustical propagation formulas and equipment usage factors, the program predicts construction noise levels for each piece of equipment to be used. A sum of these noise levels determines the total Leq noise levels expected to impact park users at Campsite #45.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

If the project proceeded with the planned 10-foot high temporary barriers, calculations show that noise levels are project to be approximately 53.7 dBA during several construction periods. This would exceed the City’s Nighttime L50 Noise Ordinance Limit of 50 dBA. The project will engage the mitigation measure listed below to ensure that impacts are mitigated to below a level of significance.

Mitigation Measure V: SOCWA shall ensure that the temporary noise barrier height shall be 15 feet, thereby reducing the maximum L50 noise level at the nearest location for the loudest phase of work to be approximately 48.7 dBA. The temporary noise barrier shall provide a noise reduction rating of at least STC-25 and shall be designed with a minimum of openings or gaps. The noise barrier shall be inspected at regular intervals to ensure it is in good condition. SOCWA shall include wall height information on construction drawings and specifications. b) Would the project result in exposure of persons to or generation of excessive groundborne vibration or groundborne noise levels?

Less Than Significant Impact. As part of the project, the Contractor will create an opening to access the interior of the Junction Structure by cutting through the concrete roof slab with a heaving duty cutting saw, jack hammer, torches, or other tools that can cut through concrete and rebar. Though this activity may create groundborne vibration or noise levels, it will be temporary and conducted within a few hours. The Construction Noise Assessment (Landrum & Brown) states that utilizing a 15 foot temporary sound barrier (Mitigation Measure V) will be sufficient for minimizing sound impacts during the loudest phase of work to below the City’s Nighttime L50 Noise Ordinance Limit.

c) Would the project result in a substantial permanent increase in ambient noise levels in the project vicinity above levels existing without the project?

No Impact. Rehabilitation to the Junction Structure will be contained below ground and will not result in a substantial permanent increase in ambient noise levels in the project vicinity above levels existing without the project.

d) Would the project result in a substantial temporary or periodic increase in ambient noise levels in the project vicinity above levels existing without the project?

Less Than Significant Impact with Mitigation Incorporated. Please see response to 3.12-a.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project e) Would the project be 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?

No Impact. The project site is not located within an airport land use plan. The closest airport, John Wayne Airport, is located more than two miles away. Therefore the project would not expose people residing or working in the project area to excessive noise levels. f) Would the project be within the vicinity of a private airstrip, would the project expose people residing or working in the project area to excessive noise levels?

No Impact. The project site is not located within the vicinity of a private airstrip. The closest airport, John Wayne Airport, is located more than two miles away. Therefore the project would not expose people residing or working in the project area to excessive noise levels.

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact XIII. POPULATION AND HOUSING – Would the project: 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)? b) Displace substantial numbers of existing housing, necessitating the construction of replacement housing elsewhere? c) Displace substantial numbers of people, necessitating the construction of replacement housing elsewhere?

3.13 Population and Housing a) Would the project 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)?

No Impact. The project is intended to rehabilitate the existing San Juan Creek Ocean Outfall Junction Structure and will not construct new homes, businesses or infrastructure. This rehabilitation will not induce substantial population growth in an area, either directly or indirectly.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project b) Would the project displace substantial numbers of existing housing, necessitating the construction of replacement housing elsewhere?

No Impact. The project is contained within the San Juan Creek Ocean Outfall Junction Structure and would not displace substantial numbers of existing housing or necessitate the construction of replacement housing elsewhere. c) Would the project displace substantial numbers of people, necessitating the construction of replacement housing elsewhere?

No Impact. The project is contained within the San Juan Creek Ocean Outfall Junction Structure and would not displace substantial numbers of people or necessitate the construction of replacement housing elsewhere.

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact XIV. PUBLIC SERVICES a) Would the project 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?

3.14 Public Services a) Would the project 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?

No Impact. The City of Dana Point Fire Department provides fire protection and emergency response services to the project area. The proposed project serves to rehabilitate the existing San Juan Creek Ocean Outfall Junction Structure and would not require new or additional fire protection.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Police protection?

No Impact. The Doheny State Beach Peace Officers (Rangers/Lifeguards) and City of Dana Point Police Department provide law enforcement services to the project area. The proposed project serves to rehabilitate the existing San Juan Creek Ocean Outfall Junction Structure and would not require new or additional police protection.

Schools?

No Impact. The proposed project serves to rehabilitate the existing San Juan Creek Ocean Outfall Junction Structure and would not add residential housing. Therefore the project will not increase the residential population of the area or require additional school facilities.

Parks?

No Impact. The proposed project serves to rehabilitate the existing San Juan Creek Ocean Outfall Junction Structure and would not add increase the number of visitors to Doheny State Beach or otherwise require any additional park or recreational space.

Other public facilities?

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact XV. RECREATION a) Would the project 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? b) Does the project include recreational facilities or require the construction or expansion of

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

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

3.15 Recreation a) Would the project 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?

Less Than Significant Impact. Located in the City of Dana Point, California, Doheny State Beach is one of the state’s most popular state beaches and attracts almost one million visitors per year to its 62 acres of scenic oceanfront. The state beach is divided in two halves by the mouth of San Juan Creek in the Pacific Ocean. The northern end has a day use surfing beach as well as a five- acre lawn with recreational facilities. The southern end, where the Junction Structure is located, has a campground with 122 developed family campsites.

Open year round, the state beach’s peak season falls between Memorial Day and Labor Day, though the campground is nearly fully occupied throughout the year. Park use also peaks during holidays, weekends, and special events.

During construction for the Junction Structure Rehabilitation Project, the construction work area for Phase I and Phase II will be approximately 1.5 acres and 3.0 acres. These work areas will comprise of:

• Phase 1 Work Area includes Campsite No. 27 thru 43 (18 campsites total) to be reserved for ingress and egress to the work site, temporary contractor parking and staging, and a buffer around the work site.

• Phase 2 Work Area includes all campsites west of the existing pedestrian walkway that runs South from the restroom and showers near Campsite No. 13 to Campsite No. 43 (30 campsites total) including camp host to be reserved for ingress and egress to the work site, temporary contractor parking and staging, and a buffer around the work site.

• A 150 feet by 150 feet construction area in the vicinity of the Junction Structure (Phase 1 and Phase 2).

For a map of the Phase I and II work areas, please see Appendix A: Narrative Outline.

Campsites, restrooms, and recreational facilities reserved for the construction work area will not be accessible for beach visitors and will limit the number of campers during construction. In order to minimize the project’s temporary effect on Doheny State Beach and its visitors, construction will not take place between Memorial Day and Labor Day weekend. The construction schedule will also attempt to avoid major holidays and events at the State Beach, including Easter, Spring Break, and the annual Blues Festival. For the safety of the public, access to the beach located within the construction work area will be temporarily restricted to construction personnel. Once the project is complete, recreation at Doheny State Beach will resume normal operation.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

The proposed project will only rehabilitate the existing San Juan Creek Ocean Outfall Junction Structure and will not permanently increase the use of existing neighborhood and regional parks, including Doheny State Beach. Therefore the project will not cause substantial or accelerated physical deterioration of these recreational facilities. b) Does the project include recreational facilities or require the construction or expansion of recreational facilities, which might have an adverse physical effect on the environment?

No Impact. The proposed project will only rehabilitate the existing San Juan Creek Ocean Outfall Junction Structure and does not include recreational facilities nor require the construction or expansion of recreational facilities.

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact XVI. TRANSPORTATION/TRAFFIC – Would the project: 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? 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? 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? d) Substantially increase hazards due to a design feature (e.g., sharp curves or dangerous

intersections) or incompatible uses (e.g., farm equipment)? e) Result in inadequate emergency access? 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?

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

3.16 Transportation and Traffic a) Would the project 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?

Less Than Significant Impact. Completed rehabilitation of the Junction Structure will have some effect on the circulation system of Dana Point or within Doheny State Park. During the construction process, the west side of the Doheny State Beach Campground will be used as a contractor staging and parking area. Part of the road that forms the western section of the campground will be blocked off during both Phase I and Phase II of construction, though less of the road will be used during Phase I. Please see Appendix A: Narrative Outline for work area maps of the two construction phases.

During Phase I, campsites 1-25, 45-59, 120 and 122 will use the same road to enter and exit their campsite. During Phase II, campsites 1-12, 45-59, 120 and 122 will use the same road to enter and exit their campsite. If traffic congestion occurs within the campground, traffic flagmen will be utilized to maintain the steady flow of traffic on campground roads. However, there will still be access to the available campgrounds and the work area will not block any emergency exits. Emergency exits will remain open at all times.

During the construction process of the Junction Structure Rehabilitation Project, there will be a very small increase in vehicle trips by construction workers, with an average of about 7 vehicles per day. The existing road from the south end of the Coast Highway bridge to the South Day Use Area is only approximately 24 feet wide and shared by motorists, bicyclists, and pedestrians. Construction and crew vehicles will exercise extreme caution while operating on park roads, abide by park speed limits and parked within the campsites reserved for the duration of the project in order to minimize impact on visitor traffic within the park. Traffic flagmen will be utilized during the transportation and movement of large construction vehicles or equipment throughout the campground.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Table 3-4: Estimated vehicle trips over a five week construction period, with five work days per week

Vehicle Trips (One trip indicates to or from the Equipment construction site)

75-Ton Rough Terrain Crane 2

Wheel-Loader with Back Hoe 2

Dive Team Van & Flatbed Trailer 4

Truck Trailer (Equipment Delivery) 50

Mechanics Truck with Jib Crane 50

Portable Electric Generators 2

Portable Construction Lighting 2

Crew Vehicles (~5 vehicles) 250

Total 362

b) Would the project 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?

No Impact. The Orange County Congestion Management Program lists two Dana Point intersections that must maintain a specific Level of Service Standard; however the project site is not located at either of these two intersections. The project will not conflict with the Orange County Congestion Management Program.

c) Would the project 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?

No Impact. The closest airport, John Wayne Airport, is approximately 18 miles away from the project site. Therefore, the project will have no effect on air traffic, as it is not located within the vicinity of an airport or under a flight path.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project d) Would the project substantially increase hazards due to a design feature (e.g., sharp curves or dangerous intersections) or incompatible uses (e.g., farm equipment)?

No Impact. The project will not modify the design or configuration of any roadways or access driveways. e) Would the project result in inadequate emergency access?

No Impact. The project site is not located within any emergency access routes. Trucks, materials, and machinery associated with the project will remain within the proposed staging area and/or designated parking area. Neither the staging area nor the designated parking area are located within any emergency access routes and will not impede emergency procedures. f) Would the project conflict with adopted policies, plans, or programs regarding public transit, bicycle, or pedestrian facilities, or otherwise decrease the performance or safety of such facilities?

Less Than Significant Impact. The project is confined to the Junction Structure located within the southern half of Doheny State Beach and will have no effect on public transit, bicycle, or pedestrian facilities. However, construction vehicles associated with the project will share park roads with bicyclists and pedestrians within the park. Vehicle trips made within the park will be kept to a minimum and will abide by park speed limits. The project will not conflict with adopted policies, plans, or programs regarding alternative transportation contained within the Doheny State Beach General Plan or the City of Dana Point General Plan.

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact XVII. UTILITIES AND SERVICE SYSTEMS – Would the project: a) Exceed wastewater treatment requirements of the

applicable Regional Water Quality Control Board? 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? c) Require or result in the construction of new storm water drainage facilities or expansion of existing

facilities, the construction of which could cause significant environmental effects? d) Have sufficient water supplies available to serve the project from existing entitlements and resources, or are new or expanded entitlements needed?

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No 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? f) Be served by a landfill with sufficient permitted capacity to accommodate the project’s solid waste disposal needs? g) Comply with federal, state, and local statutes and

regulations related to solid waste?

3.17 Utilities and Service Systems a) Would the project exceed wastewater treatment requirements of the applicable Regional Water Quality Control Board?

No Impact. Wastewater effluent discharged through the San Juan Creek Ocean Outfall is treated at the SOCWA J.B. Latham Treatment Plant, the City of San Clemente Water Reclamation Plant, the Moulton Niguel Water District Plant 3A, the Santa Margarita Water District Chiquita Water Reclamation Plant, as well as the City of San Juan Capsitrano Desalter. Proposed rehabilitation of the Junction Structure will not impact operations at these facilities in a manner that will exceed the wastewater treatment requirements of the Region 8 or Region 9 Water Quality Control Boards. b) Would the project 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?

No Impact. The project proposes rehabilitating the San Juan Creek Ocean Outfall Junction Structure, an existing wastewater treatment facility, but does not result in the construction of new facilities or expansion of existing facilities. c) Would the project require or result in the construction of new storm water drainage facilities or expansion of existing facilities, the construction of which could cause significant environmental effects?

No Impact. The project only includes rehabilitation of the Junction Structure and will not require construction of any new storm water drainage facilities or expansion of existing facilities.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project d) Would the project have sufficient water supplies available to serve the project from existing entitlements and resources, or are new or expanded entitlements needed?

No Impact. The completed rehabilitation project does not require any water supplies and therefore will not increase demands for water supply. Water required for the construction process will be minimal and will be supplied by a source determined by the contractor. e) Would the project 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?

No Impact. The nature of the project is to rehabilitate an existing Junction Structure on the San Juan Creek Ocean Outfall. Neither the project nor the structure require any wastewater treatment service and therefore will not increase the demand for wastewater treatment. f) Would the project be served by a landfill with sufficient permitted capacity to accommodate the project’s solid waste disposal needs?

No Impact. While the construction process will produce some solid waste, the completed rehabilitation project will not generate any solid waste material. Minor solid waste produced in the construction process will be properly disposed at the Prima Deshecha Landfill in San Juan Capistrano. g) Would the project comply with federal, state, and local statutes and regulations related to solid waste?

No Impact. Please see response 3.17-g. The project will comply with federal, state, and local statutes and regulations in its disposal of the minor solid waste produced during the construction process. All waste will be disposed off-site and outside of Doheny State Beach.

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact XVIII. MANDATORY FINDINGS OF SIGNIFICANCE a) Does the project 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?

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Less Than Potentially Significant with Less Than Significant Mitigation Significant Impact Incorporated Impact No Impact b) Does the project have the potential to achieve short-term environmental goals to the disadvantage of long-term environmental goals? c) Does the project 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)? d) Does the project have environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly?

3.18 Mandatory Findings of Significance a) Does the project 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?

Less Than Significant Impact. Per Section 3.4 Biological Resources as well as the Dudek biological resources letter report (Dudek, 2015a), the project does not have the potential to degrade the environmental quality of Doheny State Beach, negatively impact fish, wildlife or plant populations, or eliminate cultural remnants of California’s history or prehistory. Rehabilitation of the Junction Structure is contained within the structure and will not permanently affect the surrounding area—any construction impacts will be temporary. b) Does the project have the potential to achieve short-term environmental goals to the disadvantage of long-term environmental goals?

No Impact. The goal of the Junction Structure Rehabilitation Project is to prevent future failure of the San Juan Creek Ocean Outfall if outfall flow rates were to exceed 60 MGD. The project does not sacrifice long-term environmental goals to achieve short-term environmental goals or vice versa.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project c) Does the project 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)?

Less Than Significant Impact. The project has no substantial impacts that would be cumulatively considerable in combination with other projects. There are no existing effects from past projects at the Junction Structure nor are there any current projects in the area. Rehabilitation of the Junction Structure is meant to prevent any probable future work on the Junction Structure. d) Does the project have environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly?

No Impact. The proposed San Juan Creek Junction Structure Rehabilitation project will not adversely affect human beings. Rehabilitation is contained within the Junction Structure below ground and inaccessible by the general public. As discussed above, the project will have no significant, long-term adverse effects.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

4 REFERENCES AND PREPARERS 4.1 References Cited

14 CCR 15000–15387 and Appendices A through L. Guidelines for Implementation of the California Environmental Quality Act, as amended.

California Public Resources Code, Section 21000–21177. California Environmental Quality Act, as amended.

City of Dana Point. Circulation Element, Dana Point General Plan, 1995. http://www.danapoint.org/index.aspx?page=53

City of Dana Point. Energy Efficiency and Conservation Plan. 2011. http://www.danapoint.org/index.aspx?page=337

City of Dana Point. Zoning Map, 2012. http://www.danapoint.org/index.aspx?page=302

California Department of Parks and Recreation. Doheny State Beach General Plan & Draft Environmental Impact Report, 2003. http://www.parks.ca.gov/?page_id=22580

Dudek, 2015a. Biological Resources Letter Report and Impacts Analysis, San Juan Creek Ocean Outfall Junction Structure Rehabilitation Project, South Orange County Wastewater Authority, City of Dana Point, California. Prepared for South Orange County Wastewater Authority.

Dudek, 2015b. Phase I Cultural Resources Inventory Conducted for the San Juan Creek Outfall Project – Negative Findings, Orange County, CA. Prepared for South Orange County Wastewater Authority.

EnviroStor Database. State of California Department of Toxic Substances Control. http://www.envirostor.dtsc.ca.gov/public/

Landrum & Brown. Noise Assessment for the San Juan Creek Junction Structure Rehabilitation, Dana Point (Project #564501-0100), 2015.

Orange County Transportation Authority. Congestion Management Program, 2013. http://www.octa.net/Plans-and-Programs/Congestion-Management-Program/Overview/.

SCAQMD. 2010. Greenhouse Gases CEQA Significance Thresholds Stakeholder Working Group Meeting No. 15. September 28, 2010. Available at http://www.aqmd.gov/ home/regulations/ceqa/air-quality-analysis-handbook/ghg-significance-thresholds.

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

South Coast Air Quality Management District. Final 2012 Air Quality Management Plan, 2013. http://www.aqmd.gov/home/library/clean-air-plans/air-quality-mgt-plan/final-2012-air- quality-management-plan

South Coast Air Quality Management District. Board Letter – Interim CEQA GHG Significance Threshold for Stationary Sources, Rules and Plans, 2008. http://www.aqmd.gov/docs/default-source/ceqa/handbook/greenhouse-gases- %28ghg%29-ceqa-significance-thresholds/ghgboardsynopsis.pdf?sfvrsn=2

State of California Department of Conservation. Farmland Mapping and Monitoring Program. “Orange County Important Farmland 2012” http://www.conservation.ca.gov/dlrp/fmmp/Pages/Orange.aspx

State of California Department of Conservation. Regional Geologic Hazards and Mapping Program. “State of California Seismic Hazard Zones Map 2001” http://www.conservation.ca.gov/cgs/rghm/ap/Pages/main.aspx

State of California Department of Transportation. California Scenic Highway Mapping System. http://www.dot.ca.gov/hq/LandArch/scenic_highways/

United States Environmental Protection Agency (U.S. EPA). Urban Environmental Program in New England, “What are Sensitive Receptors?” http://www.epa.gov/region1/eco/uep/sensitivereceptors.html

4.2 List of Preparers

Janie Chen, Environmental Compliance Analyst (South Orange County Wastewater Authority)

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

INTENTIONALLY LEFT BLANK

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

San Juan Creek Ocean Outfall Junction Structure

Source: Google Maps 2015

Exhibit 1 Regional Location

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Pacific Coast Highway

Latham Treatment Plant

Doheny State Beach

San Juan Creek Junction Structure

Source: Google Earth 2011

Exhibit 2 Project Vicinity

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

Key Map

Source: Google Earth 2011

Exhibit 3 Views of the Project Site

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

A. View from Coast Highway

B. View from Coast Highway

C. View from Coast Highway

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

D. View from Pacific Coast Highway

E. View from Pacific Coast Highway

F. View from Doheny State Beach – North End

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

G. Views from Doheny State Beach Campground

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

APPENDIX A: Narrative Outline

SOCWA | SAN JUAN OCEAN OUTFALL JUNCTION STRUCTURE REHABILITATION FINA DESIGN

Narrative Outline Permit Application for Construction of the San Juan Creek Ocean Outfall Junction Structure Rehabilitation Project

Section 1 – General Project Description 1.1 Background The South Orange County Wastewater Authority (SOCWA) is a Joint Powers Authority with ten member agencies. Based out of Dana Point, California, SOCWA operates four treatment plants and two ocean outfalls. SOCWA’s San Juan Creek Ocean Outfall discharges treated wastewater, known as effluent, from four upstream water reclamation plants: - City of San Clemente Water Reclamation Plant - SOCWA J.B. Latham Treatment Plant - SOCWA Plant 3A - Santa Margarita Water District Chiquita Water Reclamation Plant The land and marine sections of the outfall were constructed in 1979. Both outfall sections were constructed with 57-inch reinforced concrete pipe (RCP). The outfall extends approximately 10,550 feet into the Pacific Ocean. The San Juan Creek Ocean Outfall Junction Structure (Junction Structure) is located in Doheny State Beach near the outlet of the San Juan Creek to the Pacific Ocean. It is a 10 foot diameter reinforced concrete structure that formed the interface between the land and marine sections of the outfall. The original construction included a reinforced concrete top with a four-foot square, bolted steel access hatch. The top was modified in the early 1990’s to increase the maximum internal hydrostatic pressure. The Junction Structure serves no current functional purpose. The early 1990’s project eliminated the hatch so the Junction Structure cannot be currently used for internal inspection of the outfall.

1.2 Project Purpose In 2006, SOCWA retained Carollo Engineers to evaluate the hydraulic capacity of the San Juan Creek Ocean Outfall. Part of this evaluation included an analysis of the pressure rating of the system. This analysis found structural weakness in the Junction Structure. A subsequent finite element analysis of the Junction Structure confirmed the weakness of the structure at the connection points for the 57-inch diameter pipe. Carollo Engineers designed a structural reinforcement to the exterior of the existing structure. Installation of the structure would require excavation to a point 20 feet below sea level. This would require isolation and dewatering of the area around the structure.

To eliminate the need for excavation outside of the Junction Structure and minimize the impact on Doheny State Beach activities, SOCWA retained Black and Veatch (B&V) to develop and evaluate alternatives for rehabilitating the Junction Structure. B&V recommended installing an internal stainless steel pipe liner through the Junction Structure with external pipe seals on both ends. Important aspects of the San Juan Creek Ocean Outfall Junction Structure Rehabilitation Project (Project) included maximizing construction safety and minimizing disruption to the State Beach.

BLACK & VEATCH | NARRATIVE 1

SOCWA | SAN JUAN OCEAN OUTFALL JUNCTION STRUCTURE REHABILITATION FINA DESIGN

1.3 Project Description and Location Located in the City of Dana Point, California, Doheny State Beach is one of the state’s most popular state beaches and attracts almost one million visitors per year to its 62 acres of scenic oceanfront. The state beach is divided in two halves by the mouth of San Juan Creek in the Pacific Ocean. The northern end has a day use surfing beach as well as a five-acre lawn with recreational facilities. The southern end, where the Junction Structure is located, has a campground with 122 developed family campsites. Open year round, the state beach’s peak season falls between Memorial Day and Labor Day, though the campground is nearly fully occupied throughout the year. Park use also peaks during holidays, weekends, and special events. There are four sensitive wetland/riparian plant ecosystems located in the state beach—coastal brackish marsh, southern willow scrub, southern sycamore riparian woodland, and mule fat scrub. Doheny State Beach also provides habitat and nesting ground to birds such as the black-crowned night heron, ruby- crowned kinglets and snowy egrets.

Section 2 – Junction Structure Rehabilitation 2.1 Overview Internal Rehabilitation The proposed Project consists of the inspection, assessment, and rehabilitation of the Junction Structure.

The Junction Structure is located at Doheny State Beach, adjacent to San Juan Creek, approximately 200 feet from the Doheny State Beach Campground. The Junction Structure is a reinforced concrete structure, approximately 10 feet inside diameter by 26 feet tall. The top of the Junction Structure is 15 feet in diameter and has a top elevation of approximately 6.5 feet above MSL. The typical elevation of the beach in the vicinity of the structure is approximately 10 feet above MSL. Temporary excavation of beach sand will therefore be necessary to gain access to the Junction Structure for performance of its rehabilitation.

Because the outfall is open to the ocean, it is not feasible to dewater the Junction Structure during rehabilitation. The proposed rehabilitation will be completed by divers. To improve worker safety, SOCWA and its member agencies will retain effluent upstream rather than discharge it to the outfall. This flow sequestration can only be performed during low flow periods during early morning hours, and due to storage availability, only for limited periods of time (approximately 4 to 5 hours), after which time the retained flows need to be released to the outfall. Furthermore, these flow sequestrations can only be accomplished once per week. As a result, the Project will be carried out in two phases with multiple steps over a period of several weeks.

Due to its location on Doheny State Beach, construction work is not allowed between Memorial Day and Labor Day.

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SOCWA | SAN JUAN OCEAN OUTFALL JUNCTION STRUCTURE REHABILITATION FINA DESIGN

To accommodate all of these constraints, the Project will be completed in two phases and only during spring or fall. Phase 1 will consist of an assessment of the condition of the Junction Structure, and taking of measurements to allow for custom fabrication of the Stainless Steel Pipe Liner Inserts. Phase 2 will be the rehabilitation itself. During the time between phases, the Contractor will fabricate the piping and obtain other rehabilitation materials.

2.2 Phase 1 – Condition Assessment and Measurement of the Junction Structure 2.2.1 Mobilization and Establishment of Work Areas The proposed construction Work Area for Phase 1 and Phase 2 is approximately 1.5 acres and approximately 3.0 acres respectively. The construction Work Areas consist of the main construction work site or the beach area in the vicinity of the Junction Structure, a number of reserved campsites, and access roads at the Doheny State Beach Campground.

The first step of the project includes mobilization of equipment and materials to the site, and establishment of the Work Area. The proposed Phase 1 and Phase 2 Work Areas are shown on Figure C- 1. The areas are generally comprised of:

• Phase 1 Work Area includes Campsite No. 27 thru 43 (18 campsites total) to be reserved for use for ingress and egress to the work site, and temporary Contractor parking and staging. See Doheny State Beach Campground Map attached. • Phase 2 Work Area includes all campsites West of the existing pedestrian walkway that runs South from the restroom and showers near Campsite No. 13 to Campsite No. 43 (30 campsites total) including camp host to be reserved for use for ingress and egress to the work site, and temporary Contractor parking and staging. See Doheny State Beach Campground Map attached. • A 150 feet by 150 feet construction area in the vicinity of the Junction Structure (Phase 1 and Phase 2).

Barriers, fencing, and sound walls will be installed around the perimeter of the Work Area. The perimeter of the 150 feet by 150 feet construction area will be secured with 10-foot tall sound wall and k-rail barrier along the South and East sides (sides facing the campsites to the East, adjacent beach to the East, and Pacific Ocean), and temporary chain-link fencing with visual screens will be installed along the West side of the construction area as shown in Figure C-2. Access to Phase 1 and Phase 2 Work Areas will be through security gates as shown in Figure C-1. Use of four wheel drive vehicles or use of steel landing mats, metal plates, etc. from Campsite No. 40 to the existing Junction Structure will be used to allow vehicles to traverse in the sand.

2.2.2 Establishment of Access Into the Junction Structure Initial construction activities are required to (1) excavate and access the top of the Junction Structure, and (2) maintain suitable Work Area during internal Junction Structure rehabilitation work. The Junction Structure is currently buried below grade in close proximity to the Pacific Ocean, and its surrounding area is under the influence of waves and tide conditions (anticipated high tide levels could potentially reach up to 5.7 ft MSL).

Even though the top of the Junction Structure is higher that the predicted high tides during April and May, and September and October time frames or when the work is planned, the work area above the Junction Structure will be protected by installation of a Temporary Riser and Watertight Cover from BLACK & VEATCH | NARRATIVE 3

SOCWA | SAN JUAN OCEAN OUTFALL JUNCTION STRUCTURE REHABILITATION FINA DESIGN

potential waves and tidal action and San Juan Creek runoff. In addition, it is anticipated that the Contractor will utilize sand from within the construction area to create temporary sand berms. All temporary protective devices will be removed and the site restored to pre-existing conditions after completion of rehabilitation efforts.

Excavation of sand will be performed to gain access to the top of the Junction Structure. This work activity will need to be coordinated with a low-tide event. Following construction, the piled material will be used to backfill the excavation and the beach will be returned to its existing grades. No soil or sand will be exported out of the construction site.

Once the top of the Junction Structure is exposed, the Temporary Riser with a Watertight Cover at 12.0 above MSL will be installed and secured on top of the existing 15-feet diameter concrete roof slab of the Junction Structure. The Temporary Riser will be secured to protect the Junction Structure from inundation by ocean or creek water, and from beach sand entering into the Junction Structure. This will be accomplished by installing a Bolted Frame to fit the Temporary Riser and Watertight Cover. The Bolted Frame, Temporary Riser, and Watertight Cover shall be fitted, and designed to protect against leakage. The interface between the Bolted Frame and the concrete roof slab will have to be a watertight connection by utilizing a gasket mounting flange to create a seal. Once the Bolted Frame, Temporary Riser, and Watertight Cover have been installed and tested, the next step to create an opening to access the interior of the Junction Structure will be performed. The opening will be made by cutting through the concrete roof slab.

2.2.3 Condition Assessment and Measurements Once access into the Junction Structure is established, an inspection of the interior will be conducted by divers. Interior dimensions and measurements of the Junction Structure and the Outfall Pipes will be recorded, and information compared to the as-built drawings. The field measurements and other condition assessment information of the interior of the Junction Structure and Outfall Pipe will be used for fabrication of the Stainless Steel Pipe Liner Inserts for Phase 2 work.

2.2.4 Site Restoration After completion of the inspection, the Watertight Cover will be bolted back on and secured over the Bolted Frame without the Temporary Riser. The top of the Junction Structure will be backfilled with beach sand and restored to the pre-existing elevation recorded just prior to Phase 1 work. Contractor will then proceed with removal of the temporary facilities including temporary sand berms, k-rail barrier perimeter fencing, sound wall, chain-link fencing with visual screens and security gates. Contractor will restore the project site to its original condition, and will demobilize after completion of Phase 1.

2.3 Phase 2 – Internal Rehabilitation of the Junction Structure 2.3.1 Mobilization and Establishment of Work Area See Section 2.2.1. Contractor will be required to remobilize to the Project site, and establish Phase 2 Work Area for the internal rehabilitation of the Junction Structure similar to Phase 1 efforts.

2.3.2 Access Into the Junction Structure

BLACK & VEATCH | NARRATIVE 4

SOCWA | SAN JUAN OCEAN OUTFALL JUNCTION STRUCTURE REHABILITATION FINA DESIGN

As part of the Phase 1 work, an opening with Watertight Cover to access in and out of the Junction Structure will have been provided. Contractor will reinitiate the temporary Work Area and installation of the Temporary Riser as described above to provide a safe and secure access into the Junction Structure for the Phase 2 work.

2.3.3 Installation of Stainless Steel Pipe Liner Inserts The recommended internal permanent repair work includes installation of Internal Stainless Steel Pipe Liner Inserts with external seals. This work will require internal access into the Junction Structure and underwater construction activities performed by divers. Installation will be achieved by multiple diver entries into the Junction Structure to inspect, install, and test the Stainless Steel Pipe Liner Inserts. The installation of the three Stainless Steel Pipe Liner Inserts (two liner segments that will be inserted into the Outfall Pipes and a middle liner segment with access manway that will connect the two) will require lowering or inserting through the opening and securing or anchoring the liner segments into position inside the Junction Structure. The liner segments will be joined together using plain ended couplings (Straub, Teekway, Romac or equal) or welded. The pipe segments getting inserted into the Outfall Pipe will be provided with mechanical inflatable seals, and will be attached to the Junction Structure using temporary attachments. The seals will be inflated after the middle liner segment is connected. Once the seals are inflated, the Outfall Pipe will be isolated from the Junction Structure. At this time, the Junction Structure can be dewatered and the inserted liner segments can be fixed in place, and the Junction Structure filled with light weight cellular concrete after blind flange have been bolted on the access manway of the middle liner segment. Installation of the liner segments will take approximately 3 to 6 weeks based on the constraint of only being able to shut off effluent flow to the outfall for 4 to 5 hours at a time once per week. The work sequence will be coordinated with SOCWA Staff and conducted only during low tide/restricted effluent flow periods. Extensive coordination is required between SOCWA and upstream member agencies, Plant Operations and Contractor, and pre-planning work and a contingency plan will be developed.

2.3.4 Closure of Junction Structure and Restoration of Work Area After the Stainless Steel Pipe Liner Inserts are connected and secured in place, the Junction Structure will be filled with light weight cellular concrete all the way to the top of the structure to seal completely the Junction Structure. The Temporary Riser will be removed, Watertight Cover installed, and Junction Structure buried by restoration of sand in the Work Area to pre-existing conditions. Contractor will then proceed with removal of the temporary facilities including temporary sand berms, k-rail barrier perimeter fencing, sound wall, chain-link fencing with visual screens and security gates.

2.4 Construction Equipment The following construction equipment will be required as follows: Equipment • Bulldozer (250 Hp; diesel) • 75-Ton rough terrain crane (150 Hp; diesel) • Wheel-loader with backhoe (150 Hp; diesel) • Dive team van & flatbed trailer with generators and air compressors • Truck trailer (equipment delivery) • Mechanics truck with jib crane • Portable electric generators (400 Hp; diesel)

BLACK & VEATCH | NARRATIVE 5

SOCWA | SAN JUAN OCEAN OUTFALL JUNCTION STRUCTURE REHABILITATION FINA DESIGN

• Portable construction lighting

Crew • 8 Contractor crew (Laborer + Foreman) • 4-6 Dive crew • 1-2 Inspectors

Small Equipment • Concrete/industrial saws (250 Hp; diesel) • Welding rig (150 Hp; gas) • Compressor (150 Hp; gas) • Lights

The schedule and detailed breakdown of the work activities including construction equipment required for each of the construction phases for the Project are shown in Table 1 and Table 2.

2.5 Construction Access The main proposed access route is through the Doheny Beach State Park South Campground. Access to the Work Area will be through existing access road within the campground. The construction traffic entrance and exit should follow the normal campground traffic flow pattern and regulations. The entrance into the South Campground is off Park Lantern. The Doheny State Beach main beach entrance is located on Del Obispo Street off Pacific Coast Highway at Dana Point.

2.6 Construction Parking and Staging Area Proposed Contractor parking and staging area will be located within the Phase 1 and Phase 2 Work Areas shown on Figure C-1.

2.7 Sequence of Construction The construction sequence will involve the following steps in the following general order:

Phase 1 – Condition Assessment and Measure of the Junction Structure a. Establish the access route and construction Work Area. b. Contractor mobilization and set-up. c. Set-up and erect the boundary to the Phase 1 Work Area by installing k-rails and security fencing. d. Set-up temporary sand berms and sand improvement (steel landing mats or metal plates) to improve truck/vehicle/trailer access. e. Excavate sand around the Junction Structure to the top of the concrete roof slab. f. Install Bolted Frame, Temporary Riser and Watertight Cover to fit over proposed access opening, and perform water tightness testing. g. Cut through existing concrete slab in order to create an access opening for diver access and material movement in and out of the Junction Structure. h. Backfill excavation around the Temporary Riser with sand and place K-rail sections around Temporary Riser to secure and protect construction area. i. Conduct internal inspection and measurements of the Junction Structure.

BLACK & VEATCH | NARRATIVE 6

SOCWA | SAN JUAN OCEAN OUTFALL JUNCTION STRUCTURE REHABILITATION FINA DESIGN

j. Remove Temporary Riser, bolt Watertight Cover on the Junction Structure, backfill with sand, and restore to pre-existing condition. k. Contractor remove temporary facilities and demobilize.

Phase 2 – Internal Rehabilitation of the Junction Structure a. Establish the access route and construction Work Area. b. Contractor mobilization and set-up. c. Set-up and erect the boundary to the Phase 2 Work Area by installing k-rails and security fencing. d. Set-up temporary sand berms and sand improvement (steel landing mats or metal plates) to improve truck/vehicle/trailer access. e. Excavate sand around the Junction Structure to the top of the concrete roof slab. f. Remove Watertight Cover and install Temporary Riser. g. Backfill excavation around the Temporary Riser with sand and place K-rail sections around Temporary Riser to secure and protect construction area. h. Make necessary adjustments to the Stainless Steel Pipe Liner Inserts to suit the actual Junction Structure and Outfall Pipe (inlet/outlet sides). i. Deliver and insert the three Stainless Steel Pipe Liner Inserts, and assemble or connect the liner segments together by anchoring temporarily to the existing Outfall Pipe and Junction Structure wall. j. Enter the new Stainless Steel Pipe Liner Inserts via manway and anchor the liner segments to the existing Outfall pipe at both ends after placing the liner segments in the final position. k. Inflate external pipe seals on the liner segments to isolate Outfall Pipe from the Junction Structure after the middle liner segment is connected. l. Dewater, fix in place, and connect the three liner segments together. m. Grout the annular space between the new Stainless Steel Liner Inserts and existing Outfall Pipe and Junction Structure walls. n. Close or bolt pipe manway access with blind flange on the middle Stainless Steel Liner Insert. o. Fill the Junction Structure with lightweight concrete all the way to the top of the Junction Structure and bolt on the Watertight Cover. p. Fill the area above Junction Structure with sand. q. Restore the area used for access and construction staging. r. Contractor demobilization and closeout.

BLACK & VEATCH | NARRATIVE 7

San Juan Creek Ocean Outfall Junction Structure Rehabilitation Final Design Project

Table 1: Phase 1 - Junction Structure Condition Assessment/Measurements - Sequence of Construction Week 1 2 3 4 A - Mobilization, establish Phase 1 work area (fences, barriers, etc.), and setup parking and storage area. No. of Work Day/Week 5 1 1 5 B - Prepare work area, excavate sand, expose top of the Junction Structure, install bolted frame Active Work Period/Time 7 AM - 4 PM 11 PM - 7 AM* 11 PM - 7 AM* 9 AM - 4 PM and watertight cover. Activity A and B** C*** D*** E and F** C - Create or cut opening for access into Junction Structure, and install temporary riser and Construction Equipment watertight cover. 325 Hp Bulldozer X X D - Divers arrival and preparation, open watertight cover, perform condition assessment, take 250 Hp Concrete/Industrial Saws X measurements inside the Junction Structure, and bolt on watertight cover. 350 Hp Wheel-Loader with Backhoe X X E - Remove temporary riser, install watertight cover, and backfill/bury Junction Structure; remove fences 150 Hp Rough Terrain Crane X X X X and barriers in the work area, campsites, and parking and storage area. Mechanical Truck with Jib Crane X X X X F - Restore site to original condition and demobilize. Dive Team Van & Flatbed Trailer X 150 Hp Cement/Mortar Mixers X 150 Hp Welding Rig X X 400 Hp Generator Set X X Lighting X X 150 Hp Air Compressor X X * 90 min before; 90 min after for crew arrival and preparation; clean-up and depart, respectively ** Contractor's discretion as far as how many work days required to complete work indicated; assumed 5 days *** Work to be performed during a scheduled low tide/no effluent discharge event (4 - 5 1/2 hrs midnight to 5:30 am)

Table 2: Phase 2 - Junction Structure Rehabilitation - Sequence of Construction Week 1 2 3 4 5 6 A - Mobilization, establish Phase 2 work area (fences, barriers, etc.), No. of Work Day(s)/Week 5 1 1 1 1 5 and setup parking and storage area. Active Work Period/Time 7 AM - 4 PM 11 PM - 7 AM* 11 PM - 7 AM* 7 AM - 4 PM 11 PM - 7 AM* 9 AM - 4 PM B - Prepare work area, excavate sand, expose top of the Junction Activity A and B** G and H*** G and H*** G and H*** G, I and J*** K and F** Structure, open watertight cover, and install temporary riser. Construction Equipment G -Diver arrival and preparation, open watertight cover to access 325 Hp Bulldozer X X inside Junction Structure. 250 Hp Concrete/Industrial Saws X X X X H - Delivery of stainless steel pipe liner inserts on-site, installation 350 Hp Wheel-Loader with Backhoe X X and secure liner segments (inlet/outlet sides) in the Junction 150 Hp Rough Terrain Crane X X X X XX Structure. Mechanical Truck with Jib Crane X X X X XX I - Inflate pipe seals on the liner segments, install and connect Dive Team Van & Flatbed Trailer X X X X middle liner segments, dewater, and weld segments. 150 Hp Cement/Mortar Mixers XX J - Grout annular space and close or bolt manway access on the 150 Hp Welding Rig X X X XX middle liner segment; fill Junction Structure with lightweight 400 Hp Generator Set X X X XX concrete to the top. Lighting X X X X K - Reinstate or construct new concrete slab and seal Junction 150 Hp Air Compressor X X X XX Structure. * 90 min before; 90 min after for crew arrival and preparation; clean-up and depart, respectively F - Restore site to original condition and demobilize. ** Contractor's discretion as far as how many work days required to complete work indicated; assumed 5 days *** Work to be performed during a scheduled low tide/no effluent discharge event (4 - 5 1/2 hrs midnight to 5:30 am)

SJCOOJS Proposed Construction Sequence Timeline FINAL.xlsx Page 1 of 1 5/11/2015

Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

APPENDIX B: CalEEMod Report Annual and Winter

CalEEMod Version: CalEEMod.2013.2.2 Page 1 of 42 Date: 7/30/2015 3:36 PM

SOCWA Junction Structure Rehabilitation Project Orange County, Annual

1.0 Project Characteristics

1.1 Land Usage

Land Uses Size Metric Lot Acreage Floor Surface Area Population

City Park 0.05 Acre 0.05 2,252.05 0

1.2 Other Project Characteristics

Urbanization Urban Wind Speed (m/s) 2.2 Precipitation Freq (Days) 30

Climate Zone 8 Operational Year 2014

Utility Company San Diego Gas & Electric

CO2 Intensity 720.49 CH4 Intensity 0.029 N2O Intensity 0.006 (lb/MWhr) (lb/MWhr) (lb/MWhr)

1.3 User Entered Comments & Non-Default Data CalEEMod Version: CalEEMod.2013.2.2 Page 2 of 42 Date: 7/30/2015 3:36 PM

Project Characteristics - Land Use - Construction Phase - See Proposed Construction Sequence Timeline Off-road Equipment - *Concrete/Industrial Saw is 250HP. CalEEMod can only go up to 175HP. *Cement/Mortar Mixer is 150HP. CalEEMod can only go up to 25. *Other Material Handling Equipment: Mechanical Truck with Jib Crane. HP is estimated. Off-road Equipment - *Other Material Handling Equipment: Mechanical Truck with Jib Crane. HP is estimated. Off-road Equipment - *Concrete/Industrial Saw is 250HP. CalEEMod can only go up to 175HP. *Cement/Mortar Mixer is 150HP. CalEEMod can only go up to 25. *Other Material Handling Equipment: Mechanical Truck with Jib Crane. HP is estimated. Off-road Equipment - *Concrete/Industrial Saw is 250HP. CalEEMod can only go up to 175HP. *Other Material Handling Equipment: Mechanical Truck with Jib Crane. HP is estimated. Off-road Equipment - *Other Material Handling Equipment: Mechanical Truck with Jib Crane. HP is estimated. Off-road Equipment - *Concrete/Industrial Saw is 250HP. CalEEMod can only go up to 175HP. *Cement/Mortar Mixer is 150HP. CalEEMod can only go up to 25. *Other Material Handling Equipment: Mechanical Truck with Jib Crane. HP is estimated. Off-road Equipment - *Concrete/Industrial Saw is 250HP. CalEEMod can only go up to 175HP. *Other Material Handling Equipment: Mechanical Truck with Jib Crane. HP is estimated. Off-road Equipment - *Other Material Handling Equipment: Mechanical Truck with Jib Crane. HP is estimated. Off-road Equipment - *Other Material Handling Equipment: Mechanical Truck with Jib Crane. HP is estimated. Off-road Equipment - *Concrete/Industrial Saw is 250HP. CalEEMod can only go up to 175HP. *Other Material Handling Equipment: Mechanical Truck with Jib Crane. HP is estimated. Vehicle Trips - No vehicle trips during operation Road Dust - 0No road dust during operations Consumer Products - No consumer products during operations Area Coating - No area architectural coatings Landscape Equipment - No landscaping required Water And Wastewater - No water or wastewater required Solid Waste - No solid waste generation CalEEMod Version: CalEEMod.2013.2.2 Page 3 of 42 Date: 7/30/2015 3:36 PM

Table Name Column Name Default Value New Value

tblAreaCoating Area_EF_Nonresidential_Exterior 250 0

tblAreaMitigation UseLowVOCPaintNonresidentialExteriorV 0 250 alue tblLandUse LandUseSquareFeet 2,178.00 2,252.05

2.0 Emissions Summary CalEEMod Version: CalEEMod.2013.2.2 Page 4 of 42 Date: 7/30/2015 3:36 PM

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

2016 0.1805 1.7771 1.0828 1.5000e- 2.5000e- 0.1219 0.1244 5.8000e- 0.1123 0.1128 0.0000 141.1844 141.1844 0.0416 0.0000 142.0577 003 003 004

2017 0.1652 1.6358 1.0515 1.5000e- 2.2700e- 0.1101 0.1123 6.0000e- 0.1013 0.1019 0.0000 138.3426 138.3426 0.0418 0.0000 139.2194 003 003 004

2018 4.8000e- 4.3500e- 3.9600e- 1.0000e- 1.0000e- 2.5000e- 3.5000e- 3.0000e- 2.3000e- 2.6000e- 0.0000 0.5606 0.5606 1.4000e- 0.0000 0.5635 004 003 003 005 004 004 004 005 004 004 004

Total 0.3462 3.4172 2.1382 3.0100e- 4.8700e- 0.2322 0.2371 1.2100e- 0.2138 0.2150 0.0000 280.0875 280.0875 0.0835 0.0000 281.8406 003 003 003

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

2016 0.1805 1.7771 1.0828 1.5000e- 2.5000e- 0.1219 0.1244 5.8000e- 0.1123 0.1128 0.0000 141.1842 141.1842 0.0416 0.0000 142.0575 003 003 004

2017 0.1652 1.6358 1.0515 1.5000e- 2.2700e- 0.1101 0.1123 6.0000e- 0.1013 0.1019 0.0000 138.3424 138.3424 0.0418 0.0000 139.2193 003 003 004

2018 4.8000e- 4.3500e- 3.9600e- 1.0000e- 1.0000e- 2.5000e- 3.5000e- 3.0000e- 2.3000e- 2.6000e- 0.0000 0.5606 0.5606 1.4000e- 0.0000 0.5635 004 003 003 005 004 004 004 005 004 004 004

Total 0.3462 3.4172 2.1382 3.0100e- 4.8700e- 0.2322 0.2371 1.2100e- 0.2138 0.2150 0.0000 280.0872 280.0872 0.0835 0.0000 281.8403 003 003 003 CalEEMod Version: CalEEMod.2013.2.2 Page 5 of 42 Date: 7/30/2015 3:36 PM

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

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 0.0101 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

Energy 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

Mobile 5.0000e- 1.3000e- 5.9000e- 0.0000 9.0000e- 0.0000 9.0000e- 2.0000e- 0.0000 2.0000e- 0.0000 0.0991 0.0991 0.0000 0.0000 0.0992 005 004 004 005 005 005 005

Waste 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Water 0.0000 0.0000 0.0000 0.0000 0.0000 0.2163 0.2163 1.0000e- 0.0000 0.2171 005

Total 0.0101 1.3000e- 5.9000e- 0.0000 9.0000e- 0.0000 9.0000e- 2.0000e- 0.0000 2.0000e- 0.0000 0.3154 0.3154 1.0000e- 0.0000 0.3162 004 004 005 005 005 005 005 CalEEMod Version: CalEEMod.2013.2.2 Page 6 of 42 Date: 7/30/2015 3:36 PM

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 0.0101 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

Energy 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

Mobile 5.0000e- 1.3000e- 5.9000e- 0.0000 9.0000e- 0.0000 9.0000e- 2.0000e- 0.0000 2.0000e- 0.0000 0.0991 0.0991 0.0000 0.0000 0.0992 005 004 004 005 005 005 005

Waste 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Water 0.0000 0.0000 0.0000 0.0000 0.0000 0.2163 0.2163 1.0000e- 0.0000 0.2171 005

Total 0.0101 1.3000e- 5.9000e- 0.0000 9.0000e- 0.0000 9.0000e- 2.0000e- 0.0000 2.0000e- 0.0000 0.3154 0.3154 1.0000e- 0.0000 0.3162 004 004 005 005 005 005 005

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.2013.2.2 Page 7 of 42 Date: 7/30/2015 3:36 PM

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

1 Cut Opening for Junction Demolition 1/1/2016 1/14/2016 5 10 Structure 2 Mobilization - Condition Site Preparation 1/15/2016 1/15/2016 5 1 Assessment 3 Mobilization - Construction Site Preparation 1/16/2016 1/18/2016 5 1

4 Diver Test Building Construction 1/19/2016 6/6/2016 5 100

5 Diver Preparation Building Construction 6/7/2016 10/24/2016 5 100

6 Install Liner Segments Building Construction 10/25/2016 3/13/2017 5 100

7 Secure Liner Segments Building Construction 3/14/2017 7/31/2017 5 100

8 Finish Installation Building Construction 8/1/2017 12/18/2017 5 100

9 Demobilization - Condition Paving 12/19/2017 12/25/2017 5 5 Assessment 10 Demobilization - Construction Paving 12/26/2017 1/1/2018 5 5

Acres of Grading (Site Preparation Phase): 0

Acres of Grading (Grading Phase): 0

Acres of Paving: 0

Residential Indoor: 0; Residential Outdoor: 0; Non-Residential Indoor: 0; Non-Residential Outdoor: 0 (Architectural Coating – sqft)

OffRoad Equipment

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

Cut Opening for Junction Structure Concrete/Industrial Saws 1 8.00 81 0.73

Cut Opening for Junction Structure Rubber Tired Dozers 1 1.00 255 0.40

Cut Opening for Junction Structure Tractors/Loaders/Backhoes 2 6.00 97 0.37

Mobilization - Condition Assessment Graders 1 8.00 174 0.41

Mobilization - Condition Assessment Tractors/Loaders/Backhoes 1 8.00 97 0.37

Mobilization - Construction Graders 1 8.00 174 0.41

Mobilization - Construction Tractors/Loaders/Backhoes 1 8.00 97 0.37 CalEEMod Version: CalEEMod.2013.2.2 Page 8 of 42 Date: 7/30/2015 3:36 PM

Diver Test Cranes 1 4.00 226 0.29

Diver Test Forklifts 2 6.00 89 0.20

Diver Test Tractors/Loaders/Backhoes 2 8.00 97 0.37

Diver Preparation Cranes 1 4.00 226 0.29

Diver Preparation Forklifts 2 6.00 89 0.20

Diver Preparation Tractors/Loaders/Backhoes 2 8.00 97 0.37

Install Liner Segments Cranes 1 4.00 226 0.29

Install Liner Segments Forklifts 2 6.00 89 0.20

Install Liner Segments Tractors/Loaders/Backhoes 2 8.00 97 0.37

Secure Liner Segments Cranes 1 4.00 226 0.29

Secure Liner Segments Forklifts 2 6.00 89 0.20

Secure Liner Segments Tractors/Loaders/Backhoes 2 8.00 97 0.37

Finish Installation Cranes 1 4.00 226 0.29

Finish Installation Forklifts 2 6.00 89 0.20

Finish Installation Tractors/Loaders/Backhoes 2 8.00 97 0.37

Demobilization - Condition Assessment Cement and Mortar Mixers 4 6.00 9 0.56

Demobilization - Condition Assessment Pavers 1 7.00 125 0.42

Demobilization - Condition Assessment Rollers 1 7.00 80 0.38

Demobilization - Condition Assessment Tractors/Loaders/Backhoes 1 7.00 97 0.37

Demobilization - Construction Cement and Mortar Mixers 4 6.00 9 0.56

Demobilization - Construction Pavers 1 7.00 125 0.42

Demobilization - Construction Rollers 1 7.00 80 0.38

Demobilization - Construction Tractors/Loaders/Backhoes 1 7.00 97 0.37

Trips and VMT CalEEMod Version: CalEEMod.2013.2.2 Page 9 of 42 Date: 7/30/2015 3:36 PM

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

Cut Opening for 4 10.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT Junction Structure Mobilization - 2 5.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT Condition Assessment Mobilization - 2 5.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT Construction Diver Test 5 1.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT

Diver Preparation 5 1.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT

Install Liner Segments 5 1.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT

Secure Liner 5 1.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT Segments Finish Installation 5 1.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT

Demobilization - 7 18.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT Condition Assessment Demobilization - 7 18.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT Construction

3.1 Mitigation Measures Construction

3.2 Cut Opening for Junction Structure - 2016 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 6.5600e- 0.0562 0.0435 6.0000e- 4.0200e- 4.0200e- 3.8400e- 3.8400e- 0.0000 5.4141 5.4141 1.0800e- 0.0000 5.4369 003 005 003 003 003 003 003

Total 6.5600e- 0.0562 0.0435 6.0000e- 4.0200e- 4.0200e- 3.8400e- 3.8400e- 0.0000 5.4141 5.4141 1.0800e- 0.0000 5.4369 003 005 003 003 003 003 003 CalEEMod Version: CalEEMod.2013.2.2 Page 10 of 42 Date: 7/30/2015 3:36 PM

3.2 Cut Opening for Junction Structure - 2016 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 1.7000e- 2.5000e- 2.6400e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4948 0.4948 2.0000e- 0.0000 0.4953 004 004 003 005 004 004 004 004 005

Total 1.7000e- 2.5000e- 2.6400e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4948 0.4948 2.0000e- 0.0000 0.4953 004 004 003 005 004 004 004 004 005

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

Off-Road 6.5600e- 0.0562 0.0435 6.0000e- 4.0200e- 4.0200e- 3.8400e- 3.8400e- 0.0000 5.4141 5.4141 1.0800e- 0.0000 5.4369 003 005 003 003 003 003 003

3.2 Cut Opening for Junction Structure - 2016 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 1.7000e- 2.5000e- 2.6400e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4948 0.4948 2.0000e- 0.0000 0.4953 004 004 003 005 004 004 004 004 005

Total 1.7000e- 2.5000e- 2.6400e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4948 0.4948 2.0000e- 0.0000 0.4953 004 004 003 005 004 004 004 004 005

3.3 Mobilization - Condition Assessment - 2016 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 6.8000e- 6.8200e- 3.6700e- 0.0000 4.2000e- 4.2000e- 3.8000e- 3.8000e- 0.0000 0.4414 0.4414 1.3000e- 0.0000 0.4442 004 003 003 004 004 004 004 004

Total 6.8000e- 6.8200e- 3.6700e- 0.0000 2.7000e- 4.2000e- 6.9000e- 3.0000e- 3.8000e- 4.1000e- 0.0000 0.4414 0.4414 1.3000e- 0.0000 0.4442 004 003 003 004 004 004 005 004 004 004 CalEEMod Version: CalEEMod.2013.2.2 Page 12 of 42 Date: 7/30/2015 3:36 PM

3.3 Mobilization - Condition Assessment - 2016 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 1.0000e- 1.0000e- 1.3000e- 0.0000 3.0000e- 0.0000 3.0000e- 1.0000e- 0.0000 1.0000e- 0.0000 0.0247 0.0247 0.0000 0.0000 0.0248 005 005 004 005 005 005 005

Total 1.0000e- 1.0000e- 1.3000e- 0.0000 3.0000e- 0.0000 3.0000e- 1.0000e- 0.0000 1.0000e- 0.0000 0.0247 0.0247 0.0000 0.0000 0.0248 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 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 6.8000e- 6.8200e- 3.6700e- 0.0000 4.2000e- 4.2000e- 3.8000e- 3.8000e- 0.0000 0.4414 0.4414 1.3000e- 0.0000 0.4442 004 003 003 004 004 004 004 004

3.3 Mobilization - Condition Assessment - 2016 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 1.0000e- 1.0000e- 1.3000e- 0.0000 3.0000e- 0.0000 3.0000e- 1.0000e- 0.0000 1.0000e- 0.0000 0.0247 0.0247 0.0000 0.0000 0.0248 005 005 004 005 005 005 005

Total 1.0000e- 1.0000e- 1.3000e- 0.0000 3.0000e- 0.0000 3.0000e- 1.0000e- 0.0000 1.0000e- 0.0000 0.0247 0.0247 0.0000 0.0000 0.0248 005 005 004 005 005 005 005

3.4 Mobilization - Construction - 2016 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 6.8000e- 6.8200e- 3.6700e- 0.0000 4.2000e- 4.2000e- 3.8000e- 3.8000e- 0.0000 0.4414 0.4414 1.3000e- 0.0000 0.4442 004 003 003 004 004 004 004 004

3.4 Mobilization - Construction - 2016 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 1.0000e- 1.0000e- 1.3000e- 0.0000 3.0000e- 0.0000 3.0000e- 1.0000e- 0.0000 1.0000e- 0.0000 0.0247 0.0247 0.0000 0.0000 0.0248 005 005 004 005 005 005 005

Total 1.0000e- 1.0000e- 1.3000e- 0.0000 3.0000e- 0.0000 3.0000e- 1.0000e- 0.0000 1.0000e- 0.0000 0.0247 0.0247 0.0000 0.0000 0.0248 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 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 6.8000e- 6.8200e- 3.6700e- 0.0000 4.2000e- 4.2000e- 3.8000e- 3.8000e- 0.0000 0.4414 0.4414 1.3000e- 0.0000 0.4442 004 003 003 004 004 004 004 004

3.4 Mobilization - Construction - 2016 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 1.0000e- 1.0000e- 1.3000e- 0.0000 3.0000e- 0.0000 3.0000e- 1.0000e- 0.0000 1.0000e- 0.0000 0.0247 0.0247 0.0000 0.0000 0.0248 005 005 004 005 005 005 005

Total 1.0000e- 1.0000e- 1.3000e- 0.0000 3.0000e- 0.0000 3.0000e- 1.0000e- 0.0000 1.0000e- 0.0000 0.0247 0.0247 0.0000 0.0000 0.0248 005 005 004 005 005 005 005

3.5 Diver Test - 2016 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 0.0691 0.6853 0.4106 5.7000e- 0.0470 0.0470 0.0432 0.0432 0.0000 53.4584 53.4584 0.0161 0.0000 53.7970 004

Total 0.0691 0.6853 0.4106 5.7000e- 0.0470 0.0470 0.0432 0.0432 0.0000 53.4584 53.4584 0.0161 0.0000 53.7970 004 CalEEMod Version: CalEEMod.2013.2.2 Page 16 of 42 Date: 7/30/2015 3:36 PM

3.5 Diver Test - 2016 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 1.7000e- 2.5000e- 2.6400e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4948 0.4948 2.0000e- 0.0000 0.4953 004 004 003 005 004 004 004 004 005

Total 1.7000e- 2.5000e- 2.6400e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4948 0.4948 2.0000e- 0.0000 0.4953 004 004 003 005 004 004 004 004 005

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

Off-Road 0.0691 0.6853 0.4106 5.7000e- 0.0470 0.0470 0.0432 0.0432 0.0000 53.4583 53.4583 0.0161 0.0000 53.7969 004

Total 0.0691 0.6853 0.4106 5.7000e- 0.0470 0.0470 0.0432 0.0432 0.0000 53.4583 53.4583 0.0161 0.0000 53.7969 004 CalEEMod Version: CalEEMod.2013.2.2 Page 17 of 42 Date: 7/30/2015 3:36 PM

3.5 Diver Test - 2016 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 1.7000e- 2.5000e- 2.6400e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4948 0.4948 2.0000e- 0.0000 0.4953 004 004 003 005 004 004 004 004 005

Total 1.7000e- 2.5000e- 2.6400e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4948 0.4948 2.0000e- 0.0000 0.4953 004 004 003 005 004 004 004 004 005

3.6 Diver Preparation - 2016 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 0.0691 0.6853 0.4106 5.7000e- 0.0470 0.0470 0.0432 0.0432 0.0000 53.4584 53.4584 0.0161 0.0000 53.7970 004

Total 0.0691 0.6853 0.4106 5.7000e- 0.0470 0.0470 0.0432 0.0432 0.0000 53.4584 53.4584 0.0161 0.0000 53.7970 004 CalEEMod Version: CalEEMod.2013.2.2 Page 18 of 42 Date: 7/30/2015 3:36 PM

3.6 Diver Preparation - 2016 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 1.7000e- 2.5000e- 2.6400e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4948 0.4948 2.0000e- 0.0000 0.4953 004 004 003 005 004 004 004 004 005

Total 1.7000e- 2.5000e- 2.6400e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4948 0.4948 2.0000e- 0.0000 0.4953 004 004 003 005 004 004 004 004 005

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

Off-Road 0.0691 0.6853 0.4106 5.7000e- 0.0470 0.0470 0.0432 0.0432 0.0000 53.4583 53.4583 0.0161 0.0000 53.7969 004

Total 0.0691 0.6853 0.4106 5.7000e- 0.0470 0.0470 0.0432 0.0432 0.0000 53.4583 53.4583 0.0161 0.0000 53.7969 004 CalEEMod Version: CalEEMod.2013.2.2 Page 19 of 42 Date: 7/30/2015 3:36 PM

3.6 Diver Preparation - 2016 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 1.7000e- 2.5000e- 2.6400e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4948 0.4948 2.0000e- 0.0000 0.4953 004 004 003 005 004 004 004 004 005

Total 1.7000e- 2.5000e- 2.6400e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4948 0.4948 2.0000e- 0.0000 0.4953 004 004 003 005 004 004 004 004 005

3.7 Install Liner Segments - 2016 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 0.0339 0.3358 0.2012 2.8000e- 0.0230 0.0230 0.0212 0.0212 0.0000 26.1946 26.1946 7.9000e- 0.0000 26.3605 004 003

Total 0.0339 0.3358 0.2012 2.8000e- 0.0230 0.0230 0.0212 0.0212 0.0000 26.1946 26.1946 7.9000e- 0.0000 26.3605 004 003 CalEEMod Version: CalEEMod.2013.2.2 Page 20 of 42 Date: 7/30/2015 3:36 PM

3.7 Install Liner Segments - 2016 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 8.0000e- 1.2000e- 1.2900e- 0.0000 2.7000e- 0.0000 2.7000e- 7.0000e- 0.0000 7.0000e- 0.0000 0.2424 0.2424 1.0000e- 0.0000 0.2427 005 004 003 004 004 005 005 005

Total 8.0000e- 1.2000e- 1.2900e- 0.0000 2.7000e- 0.0000 2.7000e- 7.0000e- 0.0000 7.0000e- 0.0000 0.2424 0.2424 1.0000e- 0.0000 0.2427 005 004 003 004 004 005 005 005

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

Off-Road 0.0339 0.3358 0.2012 2.8000e- 0.0230 0.0230 0.0212 0.0212 0.0000 26.1946 26.1946 7.9000e- 0.0000 26.3605 004 003

Total 0.0339 0.3358 0.2012 2.8000e- 0.0230 0.0230 0.0212 0.0212 0.0000 26.1946 26.1946 7.9000e- 0.0000 26.3605 004 003 CalEEMod Version: CalEEMod.2013.2.2 Page 21 of 42 Date: 7/30/2015 3:36 PM

3.7 Install Liner Segments - 2016 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 8.0000e- 1.2000e- 1.2900e- 0.0000 2.7000e- 0.0000 2.7000e- 7.0000e- 0.0000 7.0000e- 0.0000 0.2424 0.2424 1.0000e- 0.0000 0.2427 005 004 003 004 004 005 005 005

Total 8.0000e- 1.2000e- 1.2900e- 0.0000 2.7000e- 0.0000 2.7000e- 7.0000e- 0.0000 7.0000e- 0.0000 0.2424 0.2424 1.0000e- 0.0000 0.2427 005 004 003 004 004 005 005 005

3.7 Install Liner Segments - 2017 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 0.0325 0.3232 0.2050 2.9000e- 0.0218 0.0218 0.0201 0.0201 0.0000 26.8237 26.8237 8.2200e- 0.0000 26.9963 004 003

Total 0.0325 0.3232 0.2050 2.9000e- 0.0218 0.0218 0.0201 0.0201 0.0000 26.8237 26.8237 8.2200e- 0.0000 26.9963 004 003 CalEEMod Version: CalEEMod.2013.2.2 Page 22 of 42 Date: 7/30/2015 3:36 PM

3.7 Install Liner Segments - 2017 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 8.0000e- 1.2000e- 1.2200e- 0.0000 2.8000e- 0.0000 2.8000e- 7.0000e- 0.0000 8.0000e- 0.0000 0.2426 0.2426 1.0000e- 0.0000 0.2428 005 004 003 004 004 005 005 005

Total 8.0000e- 1.2000e- 1.2200e- 0.0000 2.8000e- 0.0000 2.8000e- 7.0000e- 0.0000 8.0000e- 0.0000 0.2426 0.2426 1.0000e- 0.0000 0.2428 005 004 003 004 004 005 005 005

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

Off-Road 0.0325 0.3232 0.2050 2.9000e- 0.0218 0.0218 0.0201 0.0201 0.0000 26.8236 26.8236 8.2200e- 0.0000 26.9962 004 003

Total 0.0325 0.3232 0.2050 2.9000e- 0.0218 0.0218 0.0201 0.0201 0.0000 26.8236 26.8236 8.2200e- 0.0000 26.9962 004 003 CalEEMod Version: CalEEMod.2013.2.2 Page 23 of 42 Date: 7/30/2015 3:36 PM

3.7 Install Liner Segments - 2017 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 8.0000e- 1.2000e- 1.2200e- 0.0000 2.8000e- 0.0000 2.8000e- 7.0000e- 0.0000 8.0000e- 0.0000 0.2426 0.2426 1.0000e- 0.0000 0.2428 005 004 003 004 004 005 005 005

Total 8.0000e- 1.2000e- 1.2200e- 0.0000 2.8000e- 0.0000 2.8000e- 7.0000e- 0.0000 8.0000e- 0.0000 0.2426 0.2426 1.0000e- 0.0000 0.2428 005 004 003 004 004 005 005 005

3.8 Secure Liner Segments - 2017 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 0.0637 0.6337 0.4020 5.7000e- 0.0428 0.0428 0.0394 0.0394 0.0000 52.5954 52.5954 0.0161 0.0000 52.9339 004

Total 0.0637 0.6337 0.4020 5.7000e- 0.0428 0.0428 0.0394 0.0394 0.0000 52.5954 52.5954 0.0161 0.0000 52.9339 004 CalEEMod Version: CalEEMod.2013.2.2 Page 24 of 42 Date: 7/30/2015 3:36 PM

3.8 Secure Liner Segments - 2017 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 1.6000e- 2.3000e- 2.4000e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4756 0.4756 2.0000e- 0.0000 0.4761 004 004 003 005 004 004 004 004 005

Total 1.6000e- 2.3000e- 2.4000e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4756 0.4756 2.0000e- 0.0000 0.4761 004 004 003 005 004 004 004 004 005

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

Off-Road 0.0637 0.6337 0.4020 5.7000e- 0.0428 0.0428 0.0394 0.0394 0.0000 52.5954 52.5954 0.0161 0.0000 52.9338 004

Total 0.0637 0.6337 0.4020 5.7000e- 0.0428 0.0428 0.0394 0.0394 0.0000 52.5954 52.5954 0.0161 0.0000 52.9338 004 CalEEMod Version: CalEEMod.2013.2.2 Page 25 of 42 Date: 7/30/2015 3:36 PM

3.8 Secure Liner Segments - 2017 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 1.6000e- 2.3000e- 2.4000e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4756 0.4756 2.0000e- 0.0000 0.4761 004 004 003 005 004 004 004 004 005

Total 1.6000e- 2.3000e- 2.4000e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4756 0.4756 2.0000e- 0.0000 0.4761 004 004 003 005 004 004 004 004 005

3.9 Finish Installation - 2017 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 0.0637 0.6337 0.4020 5.7000e- 0.0428 0.0428 0.0394 0.0394 0.0000 52.5954 52.5954 0.0161 0.0000 52.9339 004

Total 0.0637 0.6337 0.4020 5.7000e- 0.0428 0.0428 0.0394 0.0394 0.0000 52.5954 52.5954 0.0161 0.0000 52.9339 004 CalEEMod Version: CalEEMod.2013.2.2 Page 26 of 42 Date: 7/30/2015 3:36 PM

3.9 Finish Installation - 2017 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 1.6000e- 2.3000e- 2.4000e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4756 0.4756 2.0000e- 0.0000 0.4761 004 004 003 005 004 004 004 004 005

Total 1.6000e- 2.3000e- 2.4000e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4756 0.4756 2.0000e- 0.0000 0.4761 004 004 003 005 004 004 004 004 005

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

Off-Road 0.0637 0.6337 0.4020 5.7000e- 0.0428 0.0428 0.0394 0.0394 0.0000 52.5954 52.5954 0.0161 0.0000 52.9338 004

Total 0.0637 0.6337 0.4020 5.7000e- 0.0428 0.0428 0.0394 0.0394 0.0000 52.5954 52.5954 0.0161 0.0000 52.9338 004 CalEEMod Version: CalEEMod.2013.2.2 Page 27 of 42 Date: 7/30/2015 3:36 PM

3.9 Finish Installation - 2017 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 1.6000e- 2.3000e- 2.4000e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4756 0.4756 2.0000e- 0.0000 0.4761 004 004 003 005 004 004 004 004 005

Total 1.6000e- 2.3000e- 2.4000e- 1.0000e- 5.5000e- 0.0000 5.5000e- 1.5000e- 0.0000 1.5000e- 0.0000 0.4756 0.4756 2.0000e- 0.0000 0.4761 004 004 003 005 004 004 004 004 005

3.10 Demobilization - Condition Assessment - 2017 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 2.6000e- 0.0246 0.0181 3.0000e- 1.5000e- 1.5000e- 1.3900e- 1.3900e- 0.0000 2.4243 2.4243 6.7000e- 0.0000 2.4384 003 005 003 003 003 003 004

Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 2.6000e- 0.0246 0.0181 3.0000e- 1.5000e- 1.5000e- 1.3900e- 1.3900e- 0.0000 2.4243 2.4243 6.7000e- 0.0000 2.4384 003 005 003 003 003 003 004 CalEEMod Version: CalEEMod.2013.2.2 Page 28 of 42 Date: 7/30/2015 3:36 PM

3.10 Demobilization - Condition Assessment - 2017 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 1.4000e- 2.1000e- 2.1600e- 1.0000e- 4.9000e- 0.0000 5.0000e- 1.3000e- 0.0000 1.3000e- 0.0000 0.4281 0.4281 2.0000e- 0.0000 0.4285 004 004 003 005 004 004 004 004 005

Total 1.4000e- 2.1000e- 2.1600e- 1.0000e- 4.9000e- 0.0000 5.0000e- 1.3000e- 0.0000 1.3000e- 0.0000 0.4281 0.4281 2.0000e- 0.0000 0.4285 004 004 003 005 004 004 004 004 005

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

Off-Road 2.6000e- 0.0246 0.0181 3.0000e- 1.5000e- 1.5000e- 1.3900e- 1.3900e- 0.0000 2.4243 2.4243 6.7000e- 0.0000 2.4384 003 005 003 003 003 003 004

Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

3.10 Demobilization - Condition Assessment - 2017 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 1.4000e- 2.1000e- 2.1600e- 1.0000e- 4.9000e- 0.0000 5.0000e- 1.3000e- 0.0000 1.3000e- 0.0000 0.4281 0.4281 2.0000e- 0.0000 0.4285 004 004 003 005 004 004 004 004 005

Total 1.4000e- 2.1000e- 2.1600e- 1.0000e- 4.9000e- 0.0000 5.0000e- 1.3000e- 0.0000 1.3000e- 0.0000 0.4281 0.4281 2.0000e- 0.0000 0.4285 004 004 003 005 004 004 004 004 005

3.11 Demobilization - Construction - 2017 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 2.0800e- 0.0197 0.0145 2.0000e- 1.2000e- 1.2000e- 1.1100e- 1.1100e- 0.0000 1.9395 1.9395 5.4000e- 0.0000 1.9508 003 005 003 003 003 003 004

Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 2.0800e- 0.0197 0.0145 2.0000e- 1.2000e- 1.2000e- 1.1100e- 1.1100e- 0.0000 1.9395 1.9395 5.4000e- 0.0000 1.9508 003 005 003 003 003 003 004 CalEEMod Version: CalEEMod.2013.2.2 Page 30 of 42 Date: 7/30/2015 3:36 PM

3.11 Demobilization - Construction - 2017 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 1.1000e- 1.7000e- 1.7300e- 0.0000 4.0000e- 0.0000 4.0000e- 1.0000e- 0.0000 1.1000e- 0.0000 0.3424 0.3424 2.0000e- 0.0000 0.3428 004 004 003 004 004 004 004 005

Total 1.1000e- 1.7000e- 1.7300e- 0.0000 4.0000e- 0.0000 4.0000e- 1.0000e- 0.0000 1.1000e- 0.0000 0.3424 0.3424 2.0000e- 0.0000 0.3428 004 004 003 004 004 004 004 005

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

Off-Road 2.0800e- 0.0197 0.0145 2.0000e- 1.2000e- 1.2000e- 1.1100e- 1.1100e- 0.0000 1.9394 1.9394 5.4000e- 0.0000 1.9508 003 005 003 003 003 003 004

Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 2.0800e- 0.0197 0.0145 2.0000e- 1.2000e- 1.2000e- 1.1100e- 1.1100e- 0.0000 1.9394 1.9394 5.4000e- 0.0000 1.9508 003 005 003 003 003 003 004 CalEEMod Version: CalEEMod.2013.2.2 Page 31 of 42 Date: 7/30/2015 3:36 PM

3.11 Demobilization - Construction - 2017 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 1.1000e- 1.7000e- 1.7300e- 0.0000 4.0000e- 0.0000 4.0000e- 1.0000e- 0.0000 1.1000e- 0.0000 0.3424 0.3424 2.0000e- 0.0000 0.3428 004 004 003 004 004 004 004 005

Total 1.1000e- 1.7000e- 1.7300e- 0.0000 4.0000e- 0.0000 4.0000e- 1.0000e- 0.0000 1.1000e- 0.0000 0.3424 0.3424 2.0000e- 0.0000 0.3428 004 004 003 004 004 004 004 005

3.11 Demobilization - 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 4.5000e- 4.3100e- 3.5600e- 1.0000e- 2.5000e- 2.5000e- 2.3000e- 2.3000e- 0.0000 0.4782 0.4782 1.3000e- 0.0000 0.4810 004 003 003 005 004 004 004 004 004

Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 4.5000e- 4.3100e- 3.5600e- 1.0000e- 2.5000e- 2.5000e- 2.3000e- 2.3000e- 0.0000 0.4782 0.4782 1.3000e- 0.0000 0.4810 004 003 003 005 004 004 004 004 004 CalEEMod Version: CalEEMod.2013.2.2 Page 32 of 42 Date: 7/30/2015 3:36 PM

3.11 Demobilization - 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 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 3.0000e- 4.0000e- 3.9000e- 0.0000 1.0000e- 0.0000 1.0000e- 3.0000e- 0.0000 3.0000e- 0.0000 0.0824 0.0824 0.0000 0.0000 0.0825 005 005 004 004 004 005 005

Total 3.0000e- 4.0000e- 3.9000e- 0.0000 1.0000e- 0.0000 1.0000e- 3.0000e- 0.0000 3.0000e- 0.0000 0.0824 0.0824 0.0000 0.0000 0.0825 005 005 004 004 004 005 005

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

Off-Road 4.5000e- 4.3100e- 3.5600e- 1.0000e- 2.5000e- 2.5000e- 2.3000e- 2.3000e- 0.0000 0.4782 0.4782 1.3000e- 0.0000 0.4810 004 003 003 005 004 004 004 004 004

Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

3.11 Demobilization - 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 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 3.0000e- 4.0000e- 3.9000e- 0.0000 1.0000e- 0.0000 1.0000e- 3.0000e- 0.0000 3.0000e- 0.0000 0.0824 0.0824 0.0000 0.0000 0.0825 005 005 004 004 004 005 005

Total 3.0000e- 4.0000e- 3.9000e- 0.0000 1.0000e- 0.0000 1.0000e- 3.0000e- 0.0000 3.0000e- 0.0000 0.0824 0.0824 0.0000 0.0000 0.0825 005 005 004 004 004 005 005

4.0 Operational Detail - Mobile

4.1 Mitigation Measures Mobile

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 5.0000e- 1.3000e- 5.9000e- 0.0000 9.0000e- 0.0000 9.0000e- 2.0000e- 0.0000 2.0000e- 0.0000 0.0991 0.0991 0.0000 0.0000 0.0992 005 004 004 005 005 005 005

Unmitigated 5.0000e- 1.3000e- 5.9000e- 0.0000 9.0000e- 0.0000 9.0000e- 2.0000e- 0.0000 2.0000e- 0.0000 0.0991 0.0991 0.0000 0.0000 0.0992 005 004 004 005 005 005 005 CalEEMod Version: CalEEMod.2013.2.2 Page 34 of 42 Date: 7/30/2015 3:36 PM

4.2 Trip Summary Information

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

City Park 0.08 0.08 0.08 229 229 Total 0.08 0.08 0.08 229 229

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 City Park 16.60 8.40 6.90 33.00 48.00 19.00 66 28 6

LDA LDT1 LDT2 MDV LHD1 LHD2 MHD HHD OBUS UBUS MCY SBUS MH 0.511766 0.057390 0.191335 0.154102 0.040813 0.005872 0.014592 0.013169 0.001415 0.002132 0.004680 0.000514 0.002220

5.0 Energy Detail 4.4 Fleet Mix Historical Energy Use: N

5.1 Mitigation Measures Energy CalEEMod Version: CalEEMod.2013.2.2 Page 35 of 42 Date: 7/30/2015 3:36 PM

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 0.0000 0.0000 0.0000 0.0000 0.0000 Mitigated

Electricity 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Unmitigated

NaturalGas 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 Mitigated

NaturalGas 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 Unmitigated

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

City Park 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 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 CalEEMod Version: CalEEMod.2013.2.2 Page 36 of 42 Date: 7/30/2015 3:36 PM

5.2 Energy by Land Use - NaturalGas 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

City Park 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 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

5.3 Energy by Land Use - Electricity Unmitigated

Electricity Total CO2 CH4 N2O CO2e Use

Land Use kWh/yr MT/yr

City Park 0 0.0000 0.0000 0.0000 0.0000

Total 0.0000 0.0000 0.0000 0.0000 CalEEMod Version: CalEEMod.2013.2.2 Page 37 of 42 Date: 7/30/2015 3:36 PM

5.3 Energy by Land Use - Electricity Mitigated

Electricity Total CO2 CH4 N2O CO2e Use

Land Use kWh/yr MT/yr

City Park 0 0.0000 0.0000 0.0000 0.0000

Total 0.0000 0.0000 0.0000 0.0000

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 0.0101 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

Unmitigated 0.0101 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 CalEEMod Version: CalEEMod.2013.2.2 Page 38 of 42 Date: 7/30/2015 3:36 PM

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 1.9600e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Coating 003

Consumer 8.1400e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Products 003

Landscaping 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 0.0101 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

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 1.9600e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Coating 003

Consumer 8.1400e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Products 003

Landscaping 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 0.0101 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

7.0 Water Detail CalEEMod Version: CalEEMod.2013.2.2 Page 39 of 42 Date: 7/30/2015 3:36 PM

7.1 Mitigation Measures Water

Total CO2 CH4 N2O CO2e

Category MT/yr

Mitigated 0.2163 1.0000e- 0.0000 0.2171 005

Unmitigated 0.2163 1.0000e- 0.0000 0.2171 005

7.2 Water by Land Use Unmitigated

Indoor/Out Total CO2 CH4 N2O CO2e door Use

Land Use Mgal MT/yr

City Park 0 / 0.2163 1.0000e- 0.0000 0.2171 0.0595741 005

Total 0.2163 1.0000e- 0.0000 0.2171 005 CalEEMod Version: CalEEMod.2013.2.2 Page 40 of 42 Date: 7/30/2015 3:36 PM

7.2 Water by Land Use Mitigated

Indoor/Out Total CO2 CH4 N2O CO2e door Use

Land Use Mgal MT/yr

City Park 0 / 0.2163 1.0000e- 0.0000 0.2171 0.0595741 005

Total 0.2163 1.0000e- 0.0000 0.2171 005

8.0 Waste Detail

8.1 Mitigation Measures Waste

Category/Year

Total CO2 CH4 N2O CO2e

MT/yr

Mitigated 0.0000 0.0000 0.0000 0.0000

Unmitigated 0.0000 0.0000 0.0000 0.0000 CalEEMod Version: CalEEMod.2013.2.2 Page 41 of 42 Date: 7/30/2015 3:36 PM

8.2 Waste by Land Use Unmitigated

Waste Total CO2 CH4 N2O CO2e Disposed

Land Use tons MT/yr

City Park 0 0.0000 0.0000 0.0000 0.0000

Total 0.0000 0.0000 0.0000 0.0000

Mitigated

Waste Total CO2 CH4 N2O CO2e Disposed

Land Use tons MT/yr

City Park 0 0.0000 0.0000 0.0000 0.0000

Total 0.0000 0.0000 0.0000 0.0000

9.0 Operational Offroad

Equipment Type Number Hours/Day Days/Year Horse Power Load Factor Fuel Type CalEEMod Version: CalEEMod.2013.2.2 Page 42 of 42 Date: 7/30/2015 3:36 PM

10.0 Vegetation CalEEMod Version: CalEEMod.2013.2.2 Page 1 of 38 Date: 7/30/2015 1:49 PM

SOCWA Junction Structure Rehabilitation Project Orange County, Winter

1.0 Project Characteristics

1.1 Land Usage

Land Uses Size Metric Lot Acreage Floor Surface Area Population

City Park 0.05 Acre 0.05 2,252.05 0

1.2 Other Project Characteristics

Urbanization Urban Wind Speed (m/s) 2.2 Precipitation Freq (Days) 30

Climate Zone 8 Operational Year 2014

Utility Company San Diego Gas & Electric

CO2 Intensity 720.49 CH4 Intensity 0.029 N2O Intensity 0.006 (lb/MWhr) (lb/MWhr) (lb/MWhr)

1.3 User Entered Comments & Non-Default Data CalEEMod Version: CalEEMod.2013.2.2 Page 2 of 38 Date: 7/30/2015 1:49 PM

Table Name Column Name Default Value New Value

tblAreaCoating Area_EF_Nonresidential_Exterior 250 0

tblAreaMitigation UseLowVOCPaintNonresidentialExteriorV 0 250 alue

2.0 Emissions Summary CalEEMod Version: CalEEMod.2013.2.2 Page 4 of 38 Date: 7/30/2015 1:49 PM

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

2016 1.3852 13.7108 9.2219 0.0133 0.5861 0.9399 1.4203 0.0721 0.8647 0.8677 0.0000 1,301.067 1,301.067 0.3560 0.0000 1,308.544 4 4 0

2017 1.2773 12.6783 8.0897 0.0134 0.2012 0.8554 0.8666 0.0534 0.7870 0.7900 0.0000 1,254.871 1,254.871 0.3558 0.0000 1,262.342 3 3 5

2018 0.9637 8.6968 7.8984 0.0134 0.2012 0.5063 0.7075 0.0534 0.4693 0.5227 0.0000 1,233.175 1,233.175 0.3051 0.0000 1,239.581 1 1 4

Total 3.6262 35.0859 25.2099 0.0401 0.9885 2.3016 2.9944 0.1788 2.1210 2.1803 0.0000 3,789.113 3,789.113 1.0169 0.0000 3,810.467 8 8 9

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

2016 1.3852 13.7108 9.2219 0.0133 0.5861 0.9399 1.4203 0.0721 0.8647 0.8677 0.0000 1,301.067 1,301.067 0.3560 0.0000 1,308.544 4 4 0

2017 1.2773 12.6783 8.0897 0.0134 0.2012 0.8554 0.8666 0.0534 0.7870 0.7900 0.0000 1,254.871 1,254.871 0.3558 0.0000 1,262.342 3 3 5

2018 0.9637 8.6968 7.8984 0.0134 0.2012 0.5063 0.7075 0.0534 0.4693 0.5227 0.0000 1,233.175 1,233.175 0.3051 0.0000 1,239.581 1 1 4

Total 3.6262 35.0859 25.2099 0.0401 0.9885 2.3016 2.9944 0.1788 2.1210 2.1803 0.0000 3,789.113 3,789.113 1.0169 0.0000 3,810.467 8 8 9 CalEEMod Version: CalEEMod.2013.2.2 Page 5 of 38 Date: 7/30/2015 1:49 PM

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 CalEEMod Version: CalEEMod.2013.2.2 Page 6 of 38 Date: 7/30/2015 1:49 PM

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 0.0553 0.0000 1.0000e- 0.0000 0.0000 0.0000 0.0000 0.0000 1.0000e- 1.0000e- 0.0000 1.0000e- 005 005 005 005

Energy 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

Mobile 3.2000e- 7.3000e- 3.3300e- 1.0000e- 5.0000e- 1.0000e- 5.1000e- 1.3000e- 1.0000e- 1.4000e- 0.6135 0.6135 3.0000e- 0.6140 004 004 003 005 004 005 004 004 005 004 005

Total 0.0556 7.3000e- 3.3400e- 1.0000e- 5.0000e- 1.0000e- 5.1000e- 1.3000e- 1.0000e- 1.4000e- 0.6135 0.6135 3.0000e- 0.0000 0.6141 004 003 005 004 005 004 004 005 004 005

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 0.0553 0.0000 1.0000e- 0.0000 0.0000 0.0000 0.0000 0.0000 1.0000e- 1.0000e- 0.0000 1.0000e- 005 005 005 005

Energy 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

Mobile 3.2000e- 7.3000e- 3.3300e- 1.0000e- 5.0000e- 1.0000e- 5.1000e- 1.3000e- 1.0000e- 1.4000e- 0.6135 0.6135 3.0000e- 0.6140 004 004 003 005 004 005 004 004 005 004 005

Total 0.0556 7.3000e- 3.3400e- 1.0000e- 5.0000e- 1.0000e- 5.1000e- 1.3000e- 1.0000e- 1.4000e- 0.6135 0.6135 3.0000e- 0.0000 0.6141 004 003 005 004 005 004 004 005 004 005 CalEEMod Version: CalEEMod.2013.2.2 Page 7 of 38 Date: 7/30/2015 1:49 PM

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

4 Diver Test Building Construction 1/19/2016 6/6/2016 5 100

5 Diver Preparation Building Construction 6/7/2016 10/24/2016 5 100

6 Install Liner Segments Building Construction 10/25/2016 3/13/2017 5 100

7 Secure Liner Segments Building Construction 3/14/2017 7/31/2017 5 100

8 Finish Installation Building Construction 8/1/2017 12/18/2017 5 100

9 Demobilization - Condition Paving 12/19/2017 12/25/2017 5 5 Assessment 10 Demobilization - Construction Paving 12/26/2017 1/1/2018 5 5

Acres of Grading (Site Preparation Phase): 0

Acres of Grading (Grading Phase): 0

Acres of Paving: 0

Residential Indoor: 0; Residential Outdoor: 0; Non-Residential Indoor: 0; Non-Residential Outdoor: 0 (Architectural Coating – sqft)

OffRoad Equipment CalEEMod Version: CalEEMod.2013.2.2 Page 8 of 38 Date: 7/30/2015 1:49 PM

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

Mobilization - Condition Assessment Graders 1 8.00 174 0.41

Mobilization - Condition Assessment Tractors/Loaders/Backhoes 1 8.00 97 0.37

Cut Opening for Junction Structure Concrete/Industrial Saws 1 8.00 81 0.73

Cut Opening for Junction Structure Rubber Tired Dozers 1 1.00 255 0.40

Cut Opening for Junction Structure Tractors/Loaders/Backhoes 2 6.00 97 0.37

Diver Test Cranes 1 4.00 226 0.29

Diver Test Forklifts 2 6.00 89 0.20

Diver Test Tractors/Loaders/Backhoes 2 8.00 97 0.37

Demobilization - Condition Assessment Cement and Mortar Mixers 4 6.00 9 0.56

Demobilization - Condition Assessment Pavers 1 7.00 125 0.42

Demobilization - Condition Assessment Rollers 1 7.00 80 0.38

Demobilization - Condition Assessment Tractors/Loaders/Backhoes 1 7.00 97 0.37

Mobilization - Construction Graders 1 8.00 174 0.41

Mobilization - Construction Tractors/Loaders/Backhoes 1 8.00 97 0.37

Diver Preparation Cranes 1 4.00 226 0.29

Diver Preparation Forklifts 2 6.00 89 0.20

Diver Preparation Tractors/Loaders/Backhoes 2 8.00 97 0.37

Install Liner Segments Cranes 1 4.00 226 0.29

Install Liner Segments Forklifts 2 6.00 89 0.20

Install Liner Segments Tractors/Loaders/Backhoes 2 8.00 97 0.37

Secure Liner Segments Cranes 1 4.00 226 0.29

Secure Liner Segments Forklifts 2 6.00 89 0.20

Secure Liner Segments Tractors/Loaders/Backhoes 2 8.00 97 0.37

Finish Installation Cranes 1 4.00 226 0.29

Finish Installation Forklifts 2 6.00 89 0.20

Finish Installation Tractors/Loaders/Backhoes 2 8.00 97 0.37

Demobilization - Construction Cement and Mortar Mixers 4 6.00 9 0.56 CalEEMod Version: CalEEMod.2013.2.2 Page 9 of 38 Date: 7/30/2015 1:49 PM

Demobilization - Construction Pavers 1 7.00 125 0.42

Demobilization - Construction Rollers 1 7.00 80 0.38

Demobilization - Construction Tractors/Loaders/Backhoes 1 7.00 97 0.37

Trips and VMT

Mobilization - 2 5.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT Condition Assessment Cut Opening for 4 10.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT Junction Structure Diver Test 5 1.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT

Demobilization - 7 18.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT Condition Assessment Mobilization - 2 5.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT Construction Diver Preparation 5 1.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT

Install Liner Segments 5 1.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT

Secure Liner 5 1.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT Segments Finish Installation 5 1.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT

Demobilization - 7 18.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT Construction

3.1 Mitigation Measures Construction CalEEMod Version: CalEEMod.2013.2.2 Page 10 of 38 Date: 7/30/2015 1:49 PM

3.2 Cut Opening for Junction Structure - 2016 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 1.3122 11.2385 8.7048 0.0120 0.8039 0.8039 0.7674 0.7674 1,193.610 1,193.610 0.2386 1,198.621 6 6 7

Total 1.3122 11.2385 8.7048 0.0120 0.8039 0.8039 0.7674 0.7674 1,193.610 1,193.610 0.2386 1,198.621 6 6 7

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 0.0365 0.0493 0.5171 1.2800e- 0.1118 7.8000e- 0.1126 0.0296 7.2000e- 0.0304 107.4568 107.4568 5.3400e- 107.5688 003 004 004 003

Total 0.0365 0.0493 0.5171 1.2800e- 0.1118 7.8000e- 0.1126 0.0296 7.2000e- 0.0304 107.4568 107.4568 5.3400e- 107.5688 003 004 004 003 CalEEMod Version: CalEEMod.2013.2.2 Page 11 of 38 Date: 7/30/2015 1:49 PM

3.2 Cut Opening for Junction Structure - 2016 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 1.3122 11.2385 8.7048 0.0120 0.8039 0.8039 0.7674 0.7674 0.0000 1,193.610 1,193.610 0.2386 1,198.621 6 6 7

Total 1.3122 11.2385 8.7048 0.0120 0.8039 0.8039 0.7674 0.7674 0.0000 1,193.610 1,193.610 0.2386 1,198.621 6 6 7

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 0.0365 0.0493 0.5171 1.2800e- 0.1118 7.8000e- 0.1126 0.0296 7.2000e- 0.0304 107.4568 107.4568 5.3400e- 107.5688 003 004 004 003

3.3 Mobilization - Condition Assessment - 2016 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 1.3593 13.6350 7.3401 9.3500e- 0.8338 0.8338 0.7671 0.7671 973.0842 973.0842 0.2935 979.2481 003

Total 1.3593 13.6350 7.3401 9.3500e- 0.5303 0.8338 1.3640 0.0573 0.7671 0.8243 973.0842 973.0842 0.2935 979.2481 003

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 0.0183 0.0247 0.2586 6.4000e- 0.0559 3.9000e- 0.0563 0.0148 3.6000e- 0.0152 53.7284 53.7284 2.6700e- 53.7844 004 004 004 003

Total 0.0183 0.0247 0.2586 6.4000e- 0.0559 3.9000e- 0.0563 0.0148 3.6000e- 0.0152 53.7284 53.7284 2.6700e- 53.7844 004 004 004 003 CalEEMod Version: CalEEMod.2013.2.2 Page 13 of 38 Date: 7/30/2015 1:49 PM

3.3 Mobilization - Condition Assessment - 2016 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 0.5303 0.0000 0.5303 0.0573 0.0000 0.0573 0.0000 0.0000

Off-Road 1.3593 13.6350 7.3401 9.3500e- 0.8338 0.8338 0.7671 0.7671 0.0000 973.0842 973.0842 0.2935 979.2481 003

Total 1.3593 13.6350 7.3401 9.3500e- 0.5303 0.8338 1.3640 0.0573 0.7671 0.8243 0.0000 973.0842 973.0842 0.2935 979.2481 003

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 0.0183 0.0247 0.2586 6.4000e- 0.0559 3.9000e- 0.0563 0.0148 3.6000e- 0.0152 53.7284 53.7284 2.6700e- 53.7844 004 004 004 003

3.4 Mobilization - Construction - 2016 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 1.3593 13.6350 7.3401 9.3500e- 0.8338 0.8338 0.7671 0.7671 973.0842 973.0842 0.2935 979.2481 003

Total 1.3593 13.6350 7.3401 9.3500e- 0.5303 0.8338 1.3640 0.0573 0.7671 0.8243 973.0842 973.0842 0.2935 979.2481 003

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 0.0183 0.0247 0.2586 6.4000e- 0.0559 3.9000e- 0.0563 0.0148 3.6000e- 0.0152 53.7284 53.7284 2.6700e- 53.7844 004 004 004 003

3.4 Mobilization - Construction - 2016 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 0.5303 0.0000 0.5303 0.0573 0.0000 0.0573 0.0000 0.0000

Off-Road 1.3593 13.6350 7.3401 9.3500e- 0.8338 0.8338 0.7671 0.7671 0.0000 973.0842 973.0842 0.2935 979.2481 003

Total 1.3593 13.6350 7.3401 9.3500e- 0.5303 0.8338 1.3640 0.0573 0.7671 0.8243 0.0000 973.0842 973.0842 0.2935 979.2481 003

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 0.0183 0.0247 0.2586 6.4000e- 0.0559 3.9000e- 0.0563 0.0148 3.6000e- 0.0152 53.7284 53.7284 2.6700e- 53.7844 004 004 004 003

3.5 Diver Test - 2016 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 1.3816 13.7058 8.2122 0.0113 0.9398 0.9398 0.8646 0.8646 1,178.554 1,178.554 0.3555 1,186.020 9 9 2

Total 1.3816 13.7058 8.2122 0.0113 0.9398 0.9398 0.8646 0.8646 1,178.554 1,178.554 0.3555 1,186.020 9 9 2

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 3.6500e- 4.9300e- 0.0517 1.3000e- 0.0112 8.0000e- 0.0113 2.9600e- 7.0000e- 3.0400e- 10.7457 10.7457 5.3000e- 10.7569 003 003 004 005 003 005 003 004

Total 3.6500e- 4.9300e- 0.0517 1.3000e- 0.0112 8.0000e- 0.0113 2.9600e- 7.0000e- 3.0400e- 10.7457 10.7457 5.3000e- 10.7569 003 003 004 005 003 005 003 004 CalEEMod Version: CalEEMod.2013.2.2 Page 17 of 38 Date: 7/30/2015 1:49 PM

3.5 Diver Test - 2016 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 1.3816 13.7058 8.2122 0.0113 0.9398 0.9398 0.8646 0.8646 0.0000 1,178.554 1,178.554 0.3555 1,186.020 9 9 2

Total 1.3816 13.7058 8.2122 0.0113 0.9398 0.9398 0.8646 0.8646 0.0000 1,178.554 1,178.554 0.3555 1,186.020 9 9 2

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 3.6500e- 4.9300e- 0.0517 1.3000e- 0.0112 8.0000e- 0.0113 2.9600e- 7.0000e- 3.0400e- 10.7457 10.7457 5.3000e- 10.7569 003 003 004 005 003 005 003 004

3.6 Diver Preparation - 2016 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 1.3816 13.7058 8.2122 0.0113 0.9398 0.9398 0.8646 0.8646 1,178.554 1,178.554 0.3555 1,186.020 9 9 2

Total 1.3816 13.7058 8.2122 0.0113 0.9398 0.9398 0.8646 0.8646 1,178.554 1,178.554 0.3555 1,186.020 9 9 2

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 3.6500e- 4.9300e- 0.0517 1.3000e- 0.0112 8.0000e- 0.0113 2.9600e- 7.0000e- 3.0400e- 10.7457 10.7457 5.3000e- 10.7569 003 003 004 005 003 005 003 004

3.6 Diver Preparation - 2016 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 1.3816 13.7058 8.2122 0.0113 0.9398 0.9398 0.8646 0.8646 0.0000 1,178.554 1,178.554 0.3555 1,186.020 9 9 2

Total 1.3816 13.7058 8.2122 0.0113 0.9398 0.9398 0.8646 0.8646 0.0000 1,178.554 1,178.554 0.3555 1,186.020 9 9 2

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 3.6500e- 4.9300e- 0.0517 1.3000e- 0.0112 8.0000e- 0.0113 2.9600e- 7.0000e- 3.0400e- 10.7457 10.7457 5.3000e- 10.7569 003 003 004 005 003 005 003 004

3.7 Install Liner Segments - 2016 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 1.3816 13.7058 8.2122 0.0113 0.9398 0.9398 0.8646 0.8646 1,178.554 1,178.554 0.3555 1,186.020 9 9 2

Total 1.3816 13.7058 8.2122 0.0113 0.9398 0.9398 0.8646 0.8646 1,178.554 1,178.554 0.3555 1,186.020 9 9 2

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 3.6500e- 4.9300e- 0.0517 1.3000e- 0.0112 8.0000e- 0.0113 2.9600e- 7.0000e- 3.0400e- 10.7457 10.7457 5.3000e- 10.7569 003 003 004 005 003 005 003 004

3.7 Install Liner Segments - 2016 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 1.3816 13.7058 8.2122 0.0113 0.9398 0.9398 0.8646 0.8646 0.0000 1,178.554 1,178.554 0.3555 1,186.020 9 9 2

Total 1.3816 13.7058 8.2122 0.0113 0.9398 0.9398 0.8646 0.8646 0.0000 1,178.554 1,178.554 0.3555 1,186.020 9 9 2

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 3.6500e- 4.9300e- 0.0517 1.3000e- 0.0112 8.0000e- 0.0113 2.9600e- 7.0000e- 3.0400e- 10.7457 10.7457 5.3000e- 10.7569 003 003 004 005 003 005 003 004

3.7 Install Liner Segments - 2017 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 1.2740 12.6738 8.0395 0.0113 0.8553 0.8553 0.7869 0.7869 1,159.531 1,159.531 0.3553 1,166.991 0 0 9

Total 1.2740 12.6738 8.0395 0.0113 0.8553 0.8553 0.7869 0.7869 1,159.531 1,159.531 0.3553 1,166.991 0 0 9

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 3.3200e- 4.4800e- 0.0470 1.3000e- 0.0112 8.0000e- 0.0113 2.9600e- 7.0000e- 3.0300e- 10.3297 10.3297 5.0000e- 10.3401 003 003 004 005 003 005 003 004

Total 3.3200e- 4.4800e- 0.0470 1.3000e- 0.0112 8.0000e- 0.0113 2.9600e- 7.0000e- 3.0300e- 10.3297 10.3297 5.0000e- 10.3401 003 003 004 005 003 005 003 004 CalEEMod Version: CalEEMod.2013.2.2 Page 23 of 38 Date: 7/30/2015 1:49 PM

3.7 Install Liner Segments - 2017 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 1.2740 12.6738 8.0395 0.0113 0.8553 0.8553 0.7869 0.7869 0.0000 1,159.531 1,159.531 0.3553 1,166.991 0 0 9

Total 1.2740 12.6738 8.0395 0.0113 0.8553 0.8553 0.7869 0.7869 0.0000 1,159.531 1,159.531 0.3553 1,166.991 0 0 9

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 3.3200e- 4.4800e- 0.0470 1.3000e- 0.0112 8.0000e- 0.0113 2.9600e- 7.0000e- 3.0300e- 10.3297 10.3297 5.0000e- 10.3401 003 003 004 005 003 005 003 004

3.8 Secure Liner Segments - 2017 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 1.2740 12.6738 8.0395 0.0113 0.8553 0.8553 0.7869 0.7869 1,159.531 1,159.531 0.3553 1,166.991 0 0 9

Total 1.2740 12.6738 8.0395 0.0113 0.8553 0.8553 0.7869 0.7869 1,159.531 1,159.531 0.3553 1,166.991 0 0 9

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 3.3200e- 4.4800e- 0.0470 1.3000e- 0.0112 8.0000e- 0.0113 2.9600e- 7.0000e- 3.0300e- 10.3297 10.3297 5.0000e- 10.3401 003 003 004 005 003 005 003 004

3.8 Secure Liner Segments - 2017 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 1.2740 12.6738 8.0395 0.0113 0.8553 0.8553 0.7869 0.7869 0.0000 1,159.531 1,159.531 0.3553 1,166.991 0 0 9

Total 1.2740 12.6738 8.0395 0.0113 0.8553 0.8553 0.7869 0.7869 0.0000 1,159.531 1,159.531 0.3553 1,166.991 0 0 9

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 3.3200e- 4.4800e- 0.0470 1.3000e- 0.0112 8.0000e- 0.0113 2.9600e- 7.0000e- 3.0300e- 10.3297 10.3297 5.0000e- 10.3401 003 003 004 005 003 005 003 004

3.9 Finish Installation - 2017 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 1.2740 12.6738 8.0395 0.0113 0.8553 0.8553 0.7869 0.7869 1,159.531 1,159.531 0.3553 1,166.991 0 0 9

Total 1.2740 12.6738 8.0395 0.0113 0.8553 0.8553 0.7869 0.7869 1,159.531 1,159.531 0.3553 1,166.991 0 0 9

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 3.3200e- 4.4800e- 0.0470 1.3000e- 0.0112 8.0000e- 0.0113 2.9600e- 7.0000e- 3.0300e- 10.3297 10.3297 5.0000e- 10.3401 003 003 004 005 003 005 003 004

3.9 Finish Installation - 2017 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 1.2740 12.6738 8.0395 0.0113 0.8553 0.8553 0.7869 0.7869 0.0000 1,159.531 1,159.531 0.3553 1,166.991 0 0 9

Total 1.2740 12.6738 8.0395 0.0113 0.8553 0.8553 0.7869 0.7869 0.0000 1,159.531 1,159.531 0.3553 1,166.991 0 0 9

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 3.3200e- 4.4800e- 0.0470 1.3000e- 0.0112 8.0000e- 0.0113 2.9600e- 7.0000e- 3.0300e- 10.3297 10.3297 5.0000e- 10.3401 003 003 004 005 003 005 003 004

3.10 Demobilization - Condition Assessment - 2017 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 1.0406 9.8344 7.2432 0.0111 0.6018 0.6018 0.5572 0.5572 1,068.936 1,068.936 0.2968 1,075.169 6 6 8

Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 1.0406 9.8344 7.2432 0.0111 0.6018 0.6018 0.5572 0.5572 1,068.936 1,068.936 0.2968 1,075.169 6 6 8

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 0.0598 0.0806 0.8465 2.3100e- 0.2012 1.3700e- 0.2026 0.0534 1.2700e- 0.0546 185.9347 185.9347 8.9100e- 186.1218 003 003 003 003

Total 0.0598 0.0806 0.8465 2.3100e- 0.2012 1.3700e- 0.2026 0.0534 1.2700e- 0.0546 185.9347 185.9347 8.9100e- 186.1218 003 003 003 003 CalEEMod Version: CalEEMod.2013.2.2 Page 29 of 38 Date: 7/30/2015 1:49 PM

3.10 Demobilization - Condition Assessment - 2017 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 1.0406 9.8344 7.2432 0.0111 0.6018 0.6018 0.5572 0.5572 0.0000 1,068.936 1,068.936 0.2968 1,075.169 6 6 8

Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 1.0406 9.8344 7.2432 0.0111 0.6018 0.6018 0.5572 0.5572 0.0000 1,068.936 1,068.936 0.2968 1,075.169 6 6 8

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 0.0598 0.0806 0.8465 2.3100e- 0.2012 1.3700e- 0.2026 0.0534 1.2700e- 0.0546 185.9347 185.9347 8.9100e- 186.1218 003 003 003 003

3.11 Demobilization - Construction - 2017 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 1.0406 9.8344 7.2432 0.0111 0.6018 0.6018 0.5572 0.5572 1,068.936 1,068.936 0.2968 1,075.169 6 6 8

Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 1.0406 9.8344 7.2432 0.0111 0.6018 0.6018 0.5572 0.5572 1,068.936 1,068.936 0.2968 1,075.169 6 6 8

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 0.0598 0.0806 0.8465 2.3100e- 0.2012 1.3700e- 0.2026 0.0534 1.2700e- 0.0546 185.9347 185.9347 8.9100e- 186.1218 003 003 003 003

3.11 Demobilization - Construction - 2017 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 1.0406 9.8344 7.2432 0.0111 0.6018 0.6018 0.5572 0.5572 0.0000 1,068.936 1,068.936 0.2968 1,075.169 6 6 8

Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 1.0406 9.8344 7.2432 0.0111 0.6018 0.6018 0.5572 0.5572 0.0000 1,068.936 1,068.936 0.2968 1,075.169 6 6 8

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 0.0598 0.0806 0.8465 2.3100e- 0.2012 1.3700e- 0.2026 0.0534 1.2700e- 0.0546 185.9347 185.9347 8.9100e- 186.1218 003 003 003 003

3.11 Demobilization - 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 0.9092 8.6233 7.1255 0.0111 0.5050 0.5050 0.4681 0.4681 1,054.214 1,054.214 0.2968 1,060.446 5 5 2

Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 0.9092 8.6233 7.1255 0.0111 0.5050 0.5050 0.4681 0.4681 1,054.214 1,054.214 0.2968 1,060.446 5 5 2

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 0.0545 0.0735 0.7728 2.3100e- 0.2012 1.3600e- 0.2026 0.0534 1.2600e- 0.0546 178.9606 178.9606 8.3200e- 179.1353 003 003 003 003

Total 0.0545 0.0735 0.7728 2.3100e- 0.2012 1.3600e- 0.2026 0.0534 1.2600e- 0.0546 178.9606 178.9606 8.3200e- 179.1353 003 003 003 003 CalEEMod Version: CalEEMod.2013.2.2 Page 33 of 38 Date: 7/30/2015 1:49 PM

3.11 Demobilization - Construction - 2018 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 0.9092 8.6233 7.1255 0.0111 0.5050 0.5050 0.4681 0.4681 0.0000 1,054.214 1,054.214 0.2968 1,060.446 5 5 2

Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Total 0.9092 8.6233 7.1255 0.0111 0.5050 0.5050 0.4681 0.4681 0.0000 1,054.214 1,054.214 0.2968 1,060.446 5 5 2

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 0.0545 0.0735 0.7728 2.3100e- 0.2012 1.3600e- 0.2026 0.0534 1.2600e- 0.0546 178.9606 178.9606 8.3200e- 179.1353 003 003 003 003

Total 0.0545 0.0735 0.7728 2.3100e- 0.2012 1.3600e- 0.2026 0.0534 1.2600e- 0.0546 178.9606 178.9606 8.3200e- 179.1353 003 003 003 003

4.0 Operational Detail - Mobile CalEEMod Version: CalEEMod.2013.2.2 Page 34 of 38 Date: 7/30/2015 1:49 PM

4.1 Mitigation Measures Mobile

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 3.2000e- 7.3000e- 3.3300e- 1.0000e- 5.0000e- 1.0000e- 5.1000e- 1.3000e- 1.0000e- 1.4000e- 0.6135 0.6135 3.0000e- 0.6140 004 004 003 005 004 005 004 004 005 004 005

Unmitigated 3.2000e- 7.3000e- 3.3300e- 1.0000e- 5.0000e- 1.0000e- 5.1000e- 1.3000e- 1.0000e- 1.4000e- 0.6135 0.6135 3.0000e- 0.6140 004 004 003 005 004 005 004 004 005 004 005

4.2 Trip Summary Information

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

City Park 0.08 0.08 0.08 237 237 Total 0.08 0.08 0.08 237 237

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 City Park 16.60 8.40 6.90 33.00 48.00 19.00 66 28 6

LDA LDT1 LDT2 MDV LHD1 LHD2 MHD HHD OBUS UBUS MCY SBUS MH 0.511766 0.057390 0.191335 0.154102 0.040813 0.005872 0.014592 0.013169 0.001415 0.002132 0.004680 0.000514 0.002220

5.0 Energy Detail 4.4 Fleet Mix Historical Energy Use: N CalEEMod Version: CalEEMod.2013.2.2 Page 35 of 38 Date: 7/30/2015 1:49 PM 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 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 Mitigated

NaturalGas 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 Unmitigated

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

City Park 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 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 CalEEMod Version: CalEEMod.2013.2.2 Page 36 of 38 Date: 7/30/2015 1:49 PM

5.2 Energy by Land Use - NaturalGas 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

City Park 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 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

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 0.0553 0.0000 1.0000e- 0.0000 0.0000 0.0000 0.0000 0.0000 1.0000e- 1.0000e- 0.0000 1.0000e- 005 005 005 005

Unmitigated 0.0553 0.0000 1.0000e- 0.0000 0.0000 0.0000 0.0000 0.0000 1.0000e- 1.0000e- 0.0000 1.0000e- 005 005 005 005 CalEEMod Version: CalEEMod.2013.2.2 Page 37 of 38 Date: 7/30/2015 1:49 PM

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 0.0107 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Coating

Consumer 0.0446 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Products

Landscaping 0.0000 0.0000 1.0000e- 0.0000 0.0000 0.0000 0.0000 0.0000 1.0000e- 1.0000e- 0.0000 1.0000e- 005 005 005 005

Total 0.0553 0.0000 1.0000e- 0.0000 0.0000 0.0000 0.0000 0.0000 1.0000e- 1.0000e- 0.0000 1.0000e- 005 005 005 005

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 0.0107 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Coating

Consumer 0.0446 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Products

Landscaping 0.0000 0.0000 1.0000e- 0.0000 0.0000 0.0000 0.0000 0.0000 1.0000e- 1.0000e- 0.0000 1.0000e- 005 005 005 005

Total 0.0553 0.0000 1.0000e- 0.0000 0.0000 0.0000 0.0000 0.0000 1.0000e- 1.0000e- 0.0000 1.0000e- 005 005 005 005

7.0 Water Detail CalEEMod Version: CalEEMod.2013.2.2 Page 38 of 38 Date: 7/30/2015 1:49 PM

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 Vegetation Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

APPENDIX C: Biological Resources Letter Report and Impacts Analysis (Dudek, 2015)

February 6, 2015 8690-01

Mr. Brian Peck South Orange County Wastewater Authority 34156 Del Obispo Street Dana Point, California 92629

Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

Dear Mr. Peck:

This biological resources letter report describes the existing biological conditions of a 6.00-acre project study area located on the grounds of Doheny State Beach just southwest of the intersection of Del Obispo Road and Dana Point Harbor Drive in the City of Dana Point, California. This site had been previously evaluated for biological resources in 2007 as part of an earlier iteration of this project, and this letter report serves to update the existing conditions and project impacts within the site.

The South Orange County Wastewater Authority (SOCWA) is proposing to rehabilitate an existing outfall structure located on the grounds of Doheny State Beach near the mouth of San Juan Creek. The outfall structure at this location periodically carries more pressure than it was designed for and is in danger of breaking, resulting in the discharge of contaminated flow into the Pacific Ocean. Once construction is complete, all impacted areas will be restored to pre- construction contours and habitat type. Thus it is assumed at this point that all project-related impacts are temporary and that no increase in pipeline size is anticipated. Access to the site will be via the Street of the Park Lantern, through existing state park campground facilities, off of State Highway 1.

This biological resources letter report is provides an introduction, a summary of the pertinent biological resource regulations, a project description, the survey methods, existing biological resources, special-status biological resources, project impacts (direct and indirect), and project mitigation. The project impacts, avoidance, and mitigation measures (MMs) are discussed in accordance with the California Environmental Quality Act (CEQA), Clean Water Act (CWA), Migratory Bird Treaty Act (MBTA), and California Fish and Game Code.

Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

1 PROJECT LOCATION

The project study area is located just southwest of the intersection of Del Obispo Road and Dana Point Harbor Drive on the grounds of Doheny State Beach in the City of Dana Point, County of Orange, California. The project footprint is located on the sandy beach of the Pacific Ocean, and access to the site is provided through the campground. A project study area was created to evaluate biological resources potentially present, which includes San Juan Creek to the west and the Pacific Ocean to the south. The Doheny State Beach campground facility is located to the east and north of the project. The existing beach to the east and west of Doheny State Beach is populated with mixed commercial/residential development.

2 REGULATORY CONTEXT

This section describes the regulatory framework relevant for this project.

2.1 Federal

The federal Endangered Species Act (FESA) of 1973 (16 U.S.C. 1531 et seq.), as amended, is administered by U.S. Fish and Wildlife Service (USFWS) for most plant and animal species, and by the National Oceanic and Atmospheric Administration–National Marine Fisheries Service (NOAA-NMFS) for certain marine species. This legislation is intended to provide a means to conserve the ecosystems upon which endangered and threatened species depend and provide programs for the conservation of those species, thus preventing extinction of plants and wildlife. FESA defines an endangered species as “any species that is in danger of extinction throughout all or a significant portion of its range.” A threatened species is defined as “any species that is likely to become an endangered species within the foreseeable future throughout all or a significant portion of its range.” Under FESA, it is unlawful to take any listed species; “take” is defined as “harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, or collect, or to attempt to engage in any such conduct.”

FESA allows for the issuance of incidental take permits for listed species under Section 7, which is generally available for projects that also require other federal agency permits or other approvals, and under Section 10, which provides for the approval of habitat conservation plans on private property without any other federal agency involvement. Upon development of a habitat conservation plan, USFWS can issue incidental take permits for listed species.

8690-01 2 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

Pursuant to Section 404 of the Clean Water Act, the U.S. Army Corps of Engineers (ACOE) regulates the discharge of dredged and/or fill material into waters of the United States. The term “wetlands” (a subset of waters) is defined in 33 CFR 328.3(b) 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. Wetlands generally include swamps, marshes, bogs, and similar areas.” In the absence of wetlands, the limits of ACOE jurisdiction in non-tidal waters, such as intermittent streams, extend to the ordinary high water mark, as defined in 33 CFR 328.3(e). Pursuant to Section 10 of the Rivers and Harbors Act of 1899, the ACOE regulates any potential obstruction or alteration of any navigable water of the United States.

The Migratory Bird Treaty Act was originally passed in 1918 as four bilateral treaties, or conventions, for the protection of a shared migratory bird resource. The primary motivation for the international negotiations was to stop the “indiscriminate slaughter” of migratory birds by market hunters and others (16 U.S.C. 703–712). Each of the treaties protects selected species of birds and provides for closed and open seasons for hunting game birds. The Migratory Bird Treaty Act protects over 800 species of birds. Two species of eagles that are native to the United States, the bald eagle (Haliaeetus leucocephalus) and golden eagle (Aquila chrysaetos), were granted additional protection within the United States under the Bald and Golden Eagle Protection Act (16 U.S.C. 668–668d) to prevent the species from becoming extinct.

2.2 State

The California Department of Fish and Wildlife (CDFW) administers the California Endangered Species Act (CESA), which prohibits the take of plant and animal species designated by the Fish and Game Commission as endangered or threatened in the state of California. Under CESA Section 86, “take” is defined as “hunt, pursue, catch, capture, or kill, or attempt to hunt, pursue, catch, capture, or kill.” CESA Section 2053 stipulates that state agencies may not approve projects that will “jeopardize the continued existence of any endangered species or threatened species, or result in the destruction or adverse modification of habitat essential to the continued existence of those species, if there are reasonable and prudent alternatives available consistent with conserving the species or its habitat which would prevent jeopardy.”

CESA defines an endangered species as “a native species or subspecies of a bird, mammal, fish, amphibian, reptile, or plant which is in serious danger of becoming extinct throughout all, or a significant portion, of its range due to one or more causes, including loss of habitat, change in habitat, overexploitation, predation, competition, or disease.” CESA defines a threatened species as “a native species or subspecies of a bird, mammal, fish, amphibian, reptile, or plant that,

8690-01 3 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California although not presently threatened with extinction, is likely to become an endangered species in the foreseeable future in the absence of the special protection and management efforts required by this chapter. Any animal determined by the Commission as rare on or before January 1, 1985, is a threatened species.” A candidate species is defined as “a native species or subspecies of a bird, mammal, fish, amphibian, reptile, or plant that the Commission has formally noticed as being under review by the department for addition to either the list of endangered species or the list of threatened species, or a species for which the Commission has published a notice of proposed regulation to add the species to either list.” CESA does not list invertebrate species.

Section 2081(b) and (c) of the California Fish and Game Code authorizes take of endangered, threatened, or candidate species if take is incidental to otherwise lawful activity and if specific criteria are met. These provisions also require CDFW to coordinate consultations with USFWS for actions involving federally listed species that are also state-listed species. In certain circumstances, Section 2080.1 of CESA allows CDFW to adopt a federal incidental take statement or a 10(a) permit as its own, based on its findings that the federal permit adequately protects the species and is consistent with state law. A Section 2081(b) permit may not authorize the take of “Fully Protected” species and “specified birds” (California Fish and Game Code, Sections 3505, 3511, 4700, 5050, 5515, and 5517). If a project is planned in an area where a fully protected species or a specified bird occurs, an applicant must design the project to avoid take.

Pursuant to Section 1602 of the California Fish and Game Code, CDFW regulates all diversions, obstructions, or changes to the natural flow or bed, channel, or bank of any river, stream, or lake that supports fish or wildlife. A Streambed Alteration Agreement is required for impacts to jurisdictional wetlands in accordance with Section 1602 of the California Fish and Game Code.

Section 2835 of the California Fish and Game Code allows the Department to authorize incidental take in a natural communities conservation plan (NCCP). Take may be authorized for identified species whose conservation and management is provided for in the NCCP, whether or not the species is listed as threatened or endangered under FESA or CESA, provided that the NCCP complies with the conditions established in Section 2081 of the California Fish and Game Code. The NCCP provides the framework for the Southern Orange County NCCP/Habitat Conservation Plan (HCP).

2.3 California Coastal Act

Under the California Coastal Act (CCA), the CCC regulates impacts to wetlands in the “coastal zone” and requires a coastal development permit for almost all development within this zone. From three miles seaward the coastal zone generally extends approximately 1,000 yards inland.

8690-01 4 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

In less developed areas, it can extend up to 5 miles inland from the mean high tide line, but can also be considerably less than 1,000 yards inland in developed areas.

The CCA also protects designated sensitive coastal areas by providing additional review and approvals for proposed actions in these areas. Section 30121 of the CCA defines wetlands as “...lands within the coastal zone which may be covered periodically or permanently with shallow water and include saltwater marshes, swamps, mudflats, and fens…” The CCA allows disking, filling, or dredging of wetlands for certain uses, such as restoration. The CCA also directs each city or county within the coastal zone to prepare a Local Coastal Program (LCP) for Coastal Commission certification (CCC 2009).

In contrast to the USACE, which uses a three-parameter definition to delineate wetlands, the CCC essentially uses the Cowardin method of wetlands classification, which defines wetland boundaries by a single parameter (i.e., hydric soils, hydrophytic vegetation, or hydrology) (Cowardin et al. 1979).

2.4 CEQA

The California Environmental Quality Act (CEQA) requires identification of a project’s potentially significant impacts on biological resources and ways that such impacts can be avoided, minimized, or mitigated. The act also provides guidelines and thresholds for use by lead agencies for evaluating the significance of proposed impacts.

2.4.1 Special-Status Plants and Wildlife

The CEQA Guidelines define endangered animals or plants as species or subspecies whose “survival and reproduction in the wild are in immediate jeopardy from one or more causes, including loss of habitat, change in habitat, overexploitation, predation, competition, disease, or other factors” (14 CCR 15380(b)(1)). A rare animal or plant is defined in CEQA Guideline 15380(b)(2) as a species that, although not currently threatened with extinction, exists “in such small numbers throughout all or a significant portion of its range that it may become endangered if its environment worsens; or … [t]he species is likely to become endangered within the foreseeable future throughout all or a significant portion of its range and may be considered ‘threatened’ as that term is used in the federal Endangered Species Act.” Additionally, an animal or plant may be presumed to be endangered, rare, or threatened if it meets the criteria for listing, as defined further in CEQA Guideline 15380(c).

For purposes of this impact analysis, species are considered sensitive if they are (1) listed or proposed for listing by state or federal agencies as threatened or endangered (CDFW 2015a,

8690-01 5 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

2014b); (2) plant species with a California Rare Plant Rank (CRPR) (formerly CNPS List) 1 through 4 (CNPS 2015); (3) covered under the Southern Subregion of the Central Coastal NCCP (County of Orange 2006); or (4) considered rare, endangered, or threatened by the California Natural Diversity Database (CDFW 2015c, 2015d).

Some mammals and birds are protected by the state as fully protected species, as described in the California Fish and Game Code, Sections 4700 and 3511, respectively. Fully protected species may not be taken or possessed without a permit from the California Fish and Game Commission, and no permit is available for the incidental take of a fully protected species. Species considered state candidates for listing as threatened or endangered are subject to the taking prohibitions and provisions under CESA as if the species were listed.

2.4.2 Special-Status Vegetation Communities

Section IV, Appendix G (Environmental Checklist Form) of the CEQA Guidelines (14 CCR 15000 et seq.) requires an evaluation of impacts to “any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations, or by the California Department of Fish and Game1 or the U.S. Fish and Wildlife Service.” For the purposes of this analysis, native vegetation communities identified as requiring mitigation under the Southern Orange County NCCP/HCP are considered special status due to having been identified in a local and regional conservation plan.

2.5 Natural Communities Conservation Plan

The NCCP program was established in 1991 to provide long-term, regional protection of natural vegetation and wildlife while allowing compatible development and growth. The Southern California Coastal Sage Scrub (CSS) NCCP Program designated a 6,000 square mile planning area that includes Orange County and parts of San Diego, Riverside, San Bernardino and Los Angeles counties. Orange County is divided into Central, Coastal, and Southern Subregions, with the Central/Coastal NCCP/ HCP implemented in 1995.

The project project study area is located within the Southern Subregion of the Central Coastal NCCP. Local, state, and federal agencies and local landowners in the Southern Subregion are

1 Effective January 1, 2013, the California Department of Fish and Game (CDFG) changed its name to the California Department of Fish and Wildlife. In this document, references to guidance or documents prior to the official name change use CDFG, whereas references after the name change use CDFW. References in quoted material are not altered.

8690-01 6 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California engaged in amending the County's General Plan and Zone Change for the Rancho Mission Viejo "Ranch Plan"; developing a Special Area Management Plan/Master Streambed Alteration Agreement (SAMP/MSAA) for the San Juan Creek and San Mateo Creek watersheds; and developing the South County NCCP/HCP. The project project study area is not located within any areas proposed as part of the Southern Subregion’s habitat reserve (County of Orange 2006). Therefore, the proposed project would not preclude the development of this regional conservation plan.

3 METHODS

Data regarding biological and jurisdictional resources present within the project study area were obtained through a review of pertinent literature and field reconnaissance; both are described in detail below.

3.1 Literature Review

The following data sources were reviewed to assist with the biological and jurisdiction efforts:

 Natural Resource Conservation Service (NRCS) Websoil Survey (U.S. Department of Agriculture (USDA 2015)),  CDFW California Natural Diversity Database (CNDDB; CDFW 2015e),  California Native Plant Society (CNPS) Inventory of Rare and Endangered Plants (CNPS 2015), and  U.S. Fish and Wildlife Service (USFWS) Species Occurrence Data (USFWS 2015).

3.2 Field Reconnaissance

The field survey was performed by Dudek biologist Emily Wier (EAW) on January 9, 2015 (Table 1). The biological survey included the mapping of vegetation communities and land covers present within the project study area, an evaluation of jurisdictional waters of the U.S., including wetlands, and an evaluation of the potential for special-status species to occur in the project study area.

8690-01 7 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

Table 1 Schedule of Surveys

Date Hours Personnel Focus Conditions 1/9/15 0900-1030 EAW Update vegetation mapping, jurisdictional 53°F, overcast, 2–6 mph wind delineation, resource mapping and evaluation °F = degrees Fahrenheit; mph = miles per hour; cc = cloud cover; NR = not recorded.

3.3 Vegetation Community and Land Cover Mapping

The surveys were conducted on foot to visually cover 100% of the Project study area and a 200- scale (i.e., 200 feet = 1 inch) aerial photograph map (Bing Maps 2013) with an overlay of the Project boundary was utilized to map the vegetation communities and record any special-status biological resources directly in the field. Observable biological resources—including perennial plants and conspicuous wildlife (i.e., birds and some reptiles) commonly accepted as regionally special status by the California Native Plant Society (CNPS), CDFW, USFWS, and County of Orange (County) - were recorded on the field map, where applicable. The information recorded onto the field maps (e.g., vegetation communities and plant/animal species locations) was subsequently digitized into a Geographic Information System (GIS) format by Dudek geographic information system (GIS) technician Hannah Panno. Areas on site supporting less than 20% native plant species cover, were largely paved and/or supported more than 20% ornamental land cover were mapped as developed land. Areas supporting at least 20% native plant species, but fewer than 50% native cover, were mapped as a disturbed native vegetation community (e.g., disturbed mulefat scrub). Vegetation community and land cover mapping was conducted for the entire Project study area.

Vegetation community classifications used in this report follow Holland (1986), and where applicable, Habitat Classification System: Natural Resources Geographic Information System (GIS) Project (County of Orange 1992).

3.4 Flora

All plant species encountered during the field survey were identified and recorded directly into a field notebook. Those species that could not be identified immediately were brought into the laboratory for further investigation. A compiled list of plant species observed in the project study area is presented in Appendix A.

Latin and common names for plant species with a California Rare Plant Rank (CRPR) follow the CNPS online Inventory of Rare and Endangered Plants (2013). For plant species without a

8690-01 8 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

CRPR, Latin names follow the Jepson Interchange List of Currently Accepted Names of Native and Naturalized Plants of California (Jepson Flora Project 2013), and common names follow the U.S. Department of Agriculture Natural Resources Conservation Service Plants Database (USDA 2013).

The potential for special-status plant and wildlife species to occur on the project study area was evaluated based on site location, elevation, vegetation condition, vegetation/land covers, and soils present. Land covers on site were mapped in the field directly onto a 200-scale (1 inch = 200 feet) aerial base (Bing Maps 2015).

3.5 Fauna

Wildlife species detected during the field surveys by sight, calls, tracks, scat, or other signs were recorded directly onto a field notebook. Binoculars (810mm x40 mm) were used to aid in the identification of wildlife. In addition to species actually detected during the surveys, expected wildlife use of the site was determined by known habitat preferences of local species and knowledge of their relative distributions in the area. A list of wildlife species observed in the Project study area is presented in Appendix B.

Latin and common names of animals follow Crother (2008) for reptiles and amphibians, American Ornithologists’ Union (AOU 2012) for birds, Wilson and Reeder (2005) for mammals, and North American Butterfly Association (NABA 2001), San Diego Natural History Museum (SDNHM 2012) for butterflies, and Moyle (2002) for fish.

3.6 Wetlands Delineation

A delineation of lands subject to regulation by CDFW, pursuant to Sections 1600–1603 of the California Fish and Game Code; ACOE, pursuant to Section 404 of the federal Clean Water Act and Section 10 of the Rivers and Harbors Act; the Regional Water Quality Control Board (RWQCB), pursuant to Section 401 of the federal Clean Water Act and the Porter-Cologne Water Quality Control Act; and the CCC under the Coastal Zone Management Act. The ACOE- jurisdictional wetlands delineation was conducted in accordance with the Corps of Engineers Wetlands Delineation Manual (ACOE 1987), the Interim Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Arid West Region (ACOE 2008), and Rapanos guidance (ACOE and EPA 2008). Potential wetland sites were examined but no wetland determination data forms were filled out.

Areas under CDFW jurisdiction were defined to the bank of the streams/channels or to the limit of the adjacent riparian vegetation. Areas regulated by the RWQCB are generally conterminal

8690-01 9 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California with the ACOE, but include features isolated from navigable waters of the U.S. that have evidence of surface water inundation. Areas under the jurisdiction of the CCC are defined by the presence of hydric soils, hydrophytic vegetation, hydrology, or any combination of the three.

ACOE jurisdiction over tidal wetlands, regardless of the presence/absence of indicators, extends to 18 inches above mean ordinary high tide elevation. CDFW, under the Lake and Streambed Alteration program, does not regulate impacts to marine wetlands that are supported by tidal influences. The extent of wetland features within the project area was determined based on vegetation communities present.

3.7 Survey Limitations

Climatic conditions during the survey generally were favorable for the identification of wildlife. However, potential limitations of the survey include seasonal constraints, a diurnal bias, and the absence of focused trapping for small mammals and reptiles. As the survey was conducted in winter, special-status plant species that bloom in the spring would not be detectable. However, special-status plant species would not be expected to occur in the project study area due to a lack of suitable habitat. Surveys were conducted during the daytime to maximize visibility for the detection of plants and most animals. Birds represent the largest component of the vertebrate fauna, and because they are active in the daytime, diurnal surveys maximize the number of observations of this portion of the fauna. In contrast, daytime surveys usually result in few observations of mammals, many of which may only be active at night. In addition, many species of reptiles and amphibians are secretive in their habits and are difficult to observe using standard meandering transects. Pitfall trapping is the most effective technique for detecting many of these species; however, such trapping was beyond the scope of this project.

4 RESULTS

4.1 Site Description

The project study area is flat for the most part and is subject to intense human use associated with the beach. Soils on site are mapped as Beaches, and within San Juan Creek as Riverwash. Beaches consist of sandy, gravelly or cobbly coastal shores that are washed by tidal action. They may be partly covered with water during high tides or storms and support little or no vegetation (USDA 2015).

The project study area is on gently sloping ground from sea level to approximately 10 feet above mean sea level (AMSL).

8690-01 10 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

4.2 Vegetation Communities and Land Covers

Four vegetation communities and land cover types, totaling 6.00 acres, were identified within the project study area during the biological resource evaluation: disturbed mulefat scrub (0.27 acre); open water (0.76 acre); sandy beach (1.40 acres); and urban/developed (3.58 acres). These vegetation communities and land cover types are described below, their acreages are presented in Table 2, and their spatial distributions are presented on Figure 3.

Table 2 Acreages of Vegetation Communities and Land Covers

Code (Holland 1986 or Vegetation Community / Land Cover County of Orange 1992) Acreage Jurisdictional Waters of the U.S./State, including Wetlands Disturbed mulefat scrub (dMFS) 63310 0.27 Open Water (OW) 64110 0.76 Sandy beach (BEA) 11.4 1.40 Subtotal 2.43 Land Cover Types Urban/Developed (DEV) 12000 3.58 Subtotal 3.58 Total 6.001 1 Total may not sum due to rounding.

4.2.1 Disturbed Mulefat Scrub

Mulefat scrub is an herbaceous riparian scrub dominated by mulefat (Baccharis salicifolia) that typically occurs along intermittent stream channels with generally coarse substrate and a moderate depth to the water table (Holland 1986). Frequent flooding and/or scouring apparently maintain this community in an early successional state. Characteristic plant species in this community include mulefat, Santa Barbara sedge (Carex barbarae), willows (Salix spp.), and giant stinging nettle (Urtica holosericea).

Within the project study area, disturbed mulefat scrub supports at least 20% cover of non-native species, intermixed with native species commonly found within mulefat scrub. Plant species recorded within this habitat include mulefat, myoporum (Myoporum laetum), narrow-leaved willow (Salix exigua), giant reed (Arundo donax) and some upland species, including Mojave buckwheat (Eriogonum fasciculatum) and telegraphweed (Heterotheca grandiflora). Disturbed mulefat scrub is found along the eastern bank of San Juan Creek.

8690-01 11 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

4.2.2 Open Water

Open water typically refers to open, often times rock-lined stream channels that are barren or sparsely vegetated (Holland 1986). The lack of vegetation may be natural, caused by the scouring effects of flood events. Alternatively, the vegetation may have been removed by humans for flood control, sand mining, or other purposes. Within the project study area, open water refers to the perennial mouth of San Juan Creek, which supported shallow, flowing water but lacked vegetation at the time of the June 2007 and January 2015 surveys.

4.2.3 Sandy Beach

Sandy beach habitat is the sandy and/or cobbly habitats that line coastal strands, lagoons, lakes, or oceans (County of Orange 1992). Beaches form from wave action, disturbance, and geologic processes. Most beaches are unvegetated, but may support sparse herbaceous species. Within the project study area, sandy beach refers to the sandy, unvegetated shoreline of the Pacific Ocean bordering the existing campground.

4.2.4 Urban/Developed

Urban/developed land refers to areas that have been constructed upon or disturbed so severely that native vegetation is no longer supported (Holland 1986). Developed land includes areas with permanent or semi-permanent structures, pavement or hardscape, landscaped areas, and areas with a large amount of debris or other materials (Holland 1986). Developed areas are generally graded and compacted, sometimes covered with gravel road base or built, and have little to no vegetation present.

Developed land refers to those areas within the project study area supporting manmade structures or features including paved/compacted roadways, parking lots, ornamental landscaping, and infrastructure associated with the campground facility. These areas support limited natural ecological processes, native vegetation, and/or habitat for wildlife species and thus are not considered sensitive by local, state, and/or federal agencies.

4.2.5 Floral Diversity

A total of 18 species of native or naturalized vascular plants, 7 native (39%) and 11 non-native (61%), were recorded in the project study area (see Appendix A). The project study area is subject to the ebb and flow of the tide and thus is subject to repeated tidal action on a daily basis resulting in the presence of very few rooted plant species. No vascular plant species were observed within the actual project footprint.

8690-01 12 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

4.3 Wildlife

A total of 19 wildlife species were recorded in the project study area (Appendix B), including coastal or oceanic species, and some urban-adapted species. Most species observed were birds, which are indicative of the relative species abundance and diurnal nature of the biological reconnaissance survey. Common species observed include California gull (Larus californicus), yellow-rumped warbler (Setophaga coronata), white-crowned sparrow (Zonotrichia leucophrys), and semi-palmated plover (Charadrius semipalmatus). One mammal species, California ground squirrel (Spermophilus [=Otospermophilus] beecheyi), was observed.

4.4 Special-Status Plant Species

Endangered, rare, or threatened plant species, as defined in Section 15380(b) of the CEQA Guidelines (14 CCR 15000 et seq.), are referred to as “special-status plant species” in this report and include endangered or threatened plant species recognized in the context of CESA and FESA (CDFW 2015b, 2015c), and plant species with a CRPR 1 through 4 (CNPS 2015).

No federally or state-listed plant species or other special-status species were observed in the project study area during the survey. Due to the limited amount of suitable habitat for these species, the site’s exposure to repeated and frequent human activity and use, and the site’s proximity to urban development, the potential for special-status plants to occur on site is low.

Special-status plant species known to occur in the surrounding region and/or observed proximal to the project study area are presented in Appendix C. The evaluation of each species’ potential to occur on site is based on the elevation, habitat, and soils present on site and Dudek’s knowledge of biological resources in the area and regional distribution of each species. A number of potentially occurring plant species are conspicuous (e.g., large, woody shrubs) and readily observed if present within an open and largely disturbed site.

4.5 Special-Status Wildlife Species

Endangered, rare, or threatened wildlife species, as defined in CEQA Guidelines, Section 15380(b) (14 CCR 15000 et seq.), are referred to as “special-status wildlife species” and, as used in this report, include (1) endangered or threatened wildlife species recognized in the context of CESA and FESA (CDFW 2015a); (2) California Species of Special Concern (SSC) and Watch List (WL) species, as designated by the CDFW (2015d); (3) mammals and birds that are fully protected (FP) species, as described in the California Fish and Game Code, Sections 4700 and 3511; (4) Birds of Conservation Concern (BCC), as designated by the USFWS (2008); and (5) wildlife species covered under the Southern Subregion NCCP/HCCP (County of Orange 2006).

8690-01 13 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

No special-status wildlife species were observed on site during the general biological reconnaissance survey. Special-status wildlife species known to occur in the surrounding region or observed within the project study area are presented in Appendix D. For each species listed, a determination is made regarding the potential for the species to occur on site based on information gathered during the literature review and site visits, including the location of the site, vegetation communities or land covers present, current site conditions, and past and present land use.

Eight species have a moderate to high potential to occur within the project study area: Cooper’s hawk (Accipiter cooperi); red-shouldered hawk (Buteo lineatus); western snowy plover (Charadrius alexandrinus); white-tailed kite (Elanus leucurus); California least tern (Sternula antillarum browni); coyote (Canis latrans); gray fox (Urocyon cinereoargentus); and monarch butterfly (Danaus plexippus).

A brief description of these species is provided below.

Cooper’s hawk (Accipiter cooperii)

Cooper’s hawk is a CDFW WL species. This species is found throughout California in wooded areas. It inhabits live oak, riparian, deciduous, or other forest habitats near water. Nesting and foraging usually occur near open water or riparian vegetation. Nests are built in dense stands with moderate crown depths, usually in second-growth conifer or deciduous riparian areas. Cooper’s hawks use patchy woodlands and edges with snags for perching while they are hunting for prey such as small birds, small mammals, reptiles, and amphibians within broken woodland and habitat edges (Zeiner et al. 1990a). Cooper’s hawk would be expected to forage over the project study area and there are a number of large trees that could potentially be used for nesting by this species. This species is becoming a common resident in urban areas.

Red-shouldered hawk (Buteo lineatus)

Red-shouldered hawk is a covered species under the NCCP. This species is found throughout California in low-elevation riparian habitats, or other wooded habitats that are interspersed with swamps and emergent wetlands (Zeiner et al. 1990a). This species is also commonly found on the edge of more urbanized areas. Red-shouldered hawk would be expected to roost or perch in larger trees in the Doheny State Beach campground, and could forage over the open water in San Juan Creek.

8690-01 14 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

Western Snowy Plover (Charadrius alexandrinus)

While not documented in the CNDDB, the federally-listed threatened, state-listed endangered and BCC western snowy plover (Charadrius alexandrinus) has been previously documented in the project vicinity by California State Parks staff. This species is found primarily on sandy beaches, though they also forage on nearby mud flats, especially after breeding (Richards 1988). They also occur on dune systems, coastal lagoons, inland steppes, sand deserts, tidal flats, dry salt flats, and large sandy rivers and lakes where there is little vegetation (Richards 1988). This species generally nests on coastal sandy beaches where driftwood and vegetation is either sparse or absent between mid-March through mid-September. Due to the presence of suitable habitat on site and documented sightings of this species in the project vicinity, the western snowy plover has a high potential to occur and nest within the project study area.

White-tailed Kite (Elanus leucurus)

White-tailed kite is a CDFW FP species. It is common in the Central Valley of California and along the entire length of the coast, possibly breeding in more arid regions east of the Sierra Nevada and Transverse Range (Inyo and eastern Kern Counties), with documented breeding in Imperial County (Small 1994; Patten et al. 2003), western Riverside County (County of Riverside 2003), and eastern San Diego County (Unitt et al. 2004). The white-tailed kite is commonly associated with certain types of agriculture areas (Grinnell and Miller 1944). It also generally occurs in low-elevation grassland, wetland, oak woodland, low shrub, open woodlands, or savannah habitats. White-tailed kites build a platform of sticks in the fork of a tree or tall bush. White-tailed kite abundance and nest success is largely tied to cyclic fluctuations in abundance of its main prey species, the California vole (Dunk 1995).

This species has a moderate potential to forage within the project study area; however, nesting potential is low.

California least tern (Sternula antillarum browni)

California least tern is a federally- and state-listed endangered species, and this species is also a CDFW FP species. California least tern is a migratory species in California, and arrives at breeding territories in late April in Southern California and mid-May in Northern California. Breeding colonies are found along marine and estuarine shores (Zeiner et al. 1990a). This species forages in shallow estuaries and lagoons on small fish. There is suitable habitat within the project study area for this species to breed and forage, and this species has been recorded in the vicinity.

8690-01 15 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

Coyote (Canis latrans)

Coyote is a covered species under the NCCP, and is found in almost all habitats and successional stages within California. This species is becoming more common in urban areas, as it is an omnivorous opportunist (Zeiner et al. 1990b). Coyotes require some amount of vegetative cover, and are found in open brush, scrub, shrub, and herbaceous habitats, and may be found in croplands as well. Coyotes could be expected to occasionally occur within the project study area where there are likely ample foraging opportunities within the Doheny State Beach campground.

Gray fox (Urocyon cinereoargentus)

Gray fox is a covered species under the NCCP, and is an uncommon to common permanent resident throughout much of California. This species occurs commonly in shrublands, valley foothill riparian, montane riparian, and brush stages of many deciduous and conifer forest and woodland habitats (Zeiner et al. 1990b). Gray fox will also occur in meadows and croplands, where there is enough brush cover and ample foraging opportunities. Like the coyote, gray fox could be expected to occasionally occur within the project study area where there are likely ample foraging opportunities within the Doheny State Beach campground.

Monarch Butterfly (Danaus plexippus)

Along the California coast, the monarch butterfly overwinters in dense canopies comprised of eucalyptus trees (Eucalyptus ssp.) and occurs where asclepiad flora is present. The annual monarch migration is considered a "threatened phenomena" by the International Union for Conservation of Nature and Natural Resources. The USFWS is in the process of conducting a status review of the monarch butterfly under the FESA (USFWS 2014). Steps have been taken by both the United States and Mexican governments along with numerous private individuals and organizations to protect the overwintering sites of these butterflies. Doheny State Beach supports a small, extant overwintering population of monarch butterflies that once supported hundreds to thousands of monarch butterflies. However, current records report a pronounced decline to approximately 15 or less individuals per year since 1999 (International Environmental Law Project 2012). There is a moderate potential for those more clustered eucalyptus trees in the project study area to provide overwintering monarch habitat.

4.6 Critical Habitat

The Project study area is located within USFWS-designated critical habitat for the federally- endangered southern steelhead trout (Oncorhynchus mykiss irideus) (USFWS 2015). The project site at the time of the 2007 and 2015 survey was dry but is frequently inundated by the ebb and

8690-01 16 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California flow of the Pacific Ocean. However, while critical habitat has been designated for this species on site and within the project vicinity, the habitat conditions in virtually all of the streams located between Malibu Creek and San Mateo Creek (e.g. Los Angeles River, San Gabriel River, Santa Ana River, San Juan Creek, etc.) are highly modified, and, therefore, are not presently suitable for utilization by steelhead trout. Absent significant habitat restoration efforts, the National Marine Fisheries Service (NMFS) does not expect these rivers or streams to support steelhead trout in the future (USFWS 2002). Therefore, there is little to no potential for steelhead trout to occur on site.

4.6 Wetlands Delineation

Results of the wetland delineation indicate that approximately 2.43 acres of jurisdictional waters of the U.S. and State, including wetlands, occur within the project study area (Table 3) including 1.03 acres associated with San Juan Creek and 1.40 acres associated with the sandy shoreline of the Pacific Ocean. San Juan Creek is considered a relatively permanent water body tributary to traditional navigable waters (i.e., Pacific Ocean) and as such would be regulated by the ACOE, RWQCB, CDFW, and CCC. The beach habitat in the project study area is subject to the ebb and flow of the tide and such would be regulated by the ACOE, RWQCB, CDFW, and CCC as a non-wetland waters of the U.S.

Table 3 Jurisdictional Wetland Delineation Summary

Wetland/Waters Type Jurisdiction Acreage Disturbed mulefat scrub (dMFS) ACOE, RWQCB, CDFW, CCC 0.27 Open Water (OW) ACOE, RWQCB, CCC 0.76 Sandy beach (BEA) ACOE, RWQCB, CCC 1.40 Total 2.431 1 Total may not sum due to rounding.

4.7 Wildlife Corridors and Habitat Linkages

Wildlife corridors are linear features that connect large patches of natural open space and provide avenues for dispersal or migration of animals, as well as dispersal of plants (e.g., via wildlife vectors). Wildlife corridors contribute to population viability in several ways: (1) they assure continual exchange of genes between populations which helps maintain genetic diversity; (2) they provide access to adjacent habitat areas representing additional territory for foraging and mating; (3) they allow for a greater carrying capacity; and (4) they provide routes for

8690-01 17 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California colonization of habitat lands following local population extinctions or habitat recovery from ecological catastrophes (i.e., the rescue effect).

Habitat linkages are stretches of native habitat that function to join two larger habitat areas. These stretches may be represented by continuous patches of habitat or by nearby habitat “islands” that function as stepping stones for dispersal and movement (especially for birds and flying insects). These linkages function as connectors that reduce the adverse effects of habitat fragmentation. Habitat fragmentation may lead to decreased gene flow for small animals such as reptiles, amphibians, and rodents.

The surrounding areas to the east and west support mixed commercial/residential development and beach, and areas north of the project support mixed commercial/residential development and heavily used roadways, which contributes to habitat fragmentation and restricted wildlife movement. However, the floodplain of San Juan Creek, located off site to the west, is a north-to-south trending, sparsely vegetated, mostly concrete-lined linear riparian corridor. The floodplain likely encourages local and regional wildlife movement between upstream and downstream areas, including the Pacific Ocean. Implementation of the proposed project will not degrade the site as a local and regional wildlife corridor as the project impacts are temporary in nature. San Juan Creek will not be permanently adversely impacted by the project and will continue to serve as a corridor, providing connectivity between existing open space upstream and the Pacific Ocean.

5 PROJECT IMPACTS

This section addresses direct impacts and indirect impacts that will result from implementation of the Project.

Direct Impacts may include both the permanent loss of on-site habitat and the plant and wildlife species that it contains and the temporary loss of on-site habitat. Direct impacts were quantified by overlaying the proposed project plans onto the biological resources map. For purposes of this assessment, biological resources within the work footprint are considered temporarily directly affected because all areas disturbed within the impact footprint will be restored to pre- construction contours and conditions including revegetation with native species, where appropriate. The project will not result in any permanent impacts because no new above-ground structures, roads, or other facilities are proposed.

Indirect Impacts refer to off-site and on-site effects that are short-term impacts (i.e., temporary) due to the Project construction or long-term (i.e., permanent) design of the Project and the effects it may have to adjacent resources. For this project, it is assumed that the potential indirect

8690-01 18 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California impacts resulting from construction activities may include dust, noise, and general human presence that may temporarily disrupt species and habitat vitality and construction-related soil erosion and runoff. There are no long-term indirect impacts associated with the project, since there are no permanent improvements or other permanent changes to the environment.

Direct Impacts

Vegetation Communities

Rehabilitation of the existing outfall junction structure and equipment access to the work site will result in temporary direct impacts to 0.04 acre open water, 0.48 acre sandy beach habitat, and 0.0012 acre urban/developed land (Table 4). No permanent impacts are proposed.

Table 4 Direct Temporary Project Impacts

Vegetation Community/Land Cover Type Acreage Native Vegetation Community/Land Cover Disturbed Mulefat Scrub (dMFS) 0 Open Water (OW) 0.04 Sandy Beach (BEA) 0.48 Non-Native Uplands and Land Covers Urban/Developed (URB/DEV) 0.0012 Total1 0.52 1 Total may not sum due to rounding.

Impacts to urban/developed land are not considered significant and thus would not require habitat mitigation because this land cover provides limited biological resource value.

Direct temporary impacts to jurisdictional waters of the U.S./State, including wetlands (i.e., open water and sandy beach) are considered a significant impact, absent mitigation (BIO-1). Potential direct temporary impacts to all jurisdictional waters or wetlands on site as a result of disturbance outside of the impact area would be significant, absent mitigation (BIO-2).

Special-Status Plants

No special-status plants were detected in the project study area during the 2007 and 2014 site surveys and given the lack of suitable substrate and the tidal influences of the site the potential for special-status species to occur on site is low. Therefore, no significant direct impacts to special-status plants are anticipated.

8690-01 19 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

Special-Status Wildlife

Eight special-status wildlife species are considered to have a high potential to occur in the project study area; however, of those species only two, Western snowy plover and California least tern, have potential to occur in the impact footprint. If work is to occur during the combined breeding season for these species (April to Mid-September) potential direct impacts to nesting individuals could occur. This impact would be considered significant (BIO-3).

All raptors species are considered special-status and may use the site for foraging. Several trees in the campground itself were documented as having a high potential to support nesting raptors. Although raptor species have a high potential to nest in the project study area, there is no vegetation and/or suitable habitat for nesting raptors in the impact footprint. Thus, direct impacts to nesting raptors are not expected to occur.

Similarly, due to the lack of vegetation in the impact footprint and exposure of the site to frequent human activities, direct impacts to other special-status wildlife species are not expected to occur.

Wildlife Corridors and Habitat Linkages

The proposed project has been designed to avoid and/or minimize long-term impacts to sensitive biological resources by concentrating construction activities to a relatively small work area. Wildlife movement may be temporarily hindered during construction of the proposed project. However, because proposed impacts are temporary in nature the project will not permanently restrict or impede wildlife movement within the project study area or in surrounding areas. Upon project completion, wildlife species will continue to move unrestricted through the adjoining San Juan Creek. Therefore, direct impacts to wildlife corridors and habitat linkages are not expected to occur within the project study area.

Indirect Impacts

Vegetation Communities

Potential short-term indirect impacts to biological resources as a result of the current project are related to overall project construction activities and may include dust, noise, general human presence, and construction-related soil erosion and runoff. Potential long-term indirect impacts to biological resources may also occur as a result of the proposed project through introduction of increased human presence and construction-related noise. During construction, storm-water runoff from the project site may contain pollutants including oil and sediments, may have

8690-01 20 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California adverse effects on the Pacific Ocean. The velocity of runoff may also change during and following construction (short-term and long-term) and have adverse effects including erosion and sedimentation. These potential short- and long-term indirect impacts are considered significant absent mitigation (BIO-4).

Special-Status Plants

There are no vegetation communities that have the potential to support special-status plant species adjacent to the project site, and therefore, indirect impacts to off-site special-status plant species are not expected to occur.

Special-Status Wildlife

Migratory birds are protected by a number of state and federal laws, most notably the state and federal MBTA, which prohibits the killing, possessing, or trading of migratory birds except in accordance with regulations prescribed by the Secretary of Interior. Section 3503.5 of the California Fish and Game Code states that it is “unlawful to take, possess, or destroy any birds in the order Falconiformes or Strigiformes or to take, possess, or destroy the nest or eggs of any such bird except as otherwise provided by this code or any regulation adopted pursuant thereto.”

Short-term, construction-related noise impacts can have a variety of indirect impacts on wildlife species, including increased stress, weakened immune systems, altered foraging behavior, displacement due to startle, degraded communication with conspecifics (e.g., masking), damaged hearing from extremely loud noises, and increased vulnerability to predators (Lovich and Ennen 2011; Brattstrom and Bondello 1983, cited in Lovich and Ennen 2011). Although areas within the project impact footprint are devoid of vegetation, construction equipment will be accessing the work site through the campground, which supports several trees and shrubs that may support nesting habitat for raptors and songbirds protected by the MBTA. Additionally, nesting California least terns and western snowy plovers may nest in sandy beach habitats near the work site. Indirect impacts from construction-related noise may occur to breeding wildlife, including California least terns and western snowy plovers, if construction occurs during the breeding season (i.e., February 15–September 15 for most bird species; and January 1–August 31 for raptors). Wildlife that would be significantly affected by noise, based on suitable habitat in the vicinity, may occur up to 500 feet from the project work area. This impact would be considered a significant impact, absent mitigation (BIO-5).

8690-01 21 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

Wildlife Corridors and Habitat Linkages

The local habitat linkage/wildlife corridor would be subject to the same edge effects described above for special-status wildlife.

6 MITIGATION MEASURES

This section describes the MMs required to avoid direct and indirect impacts to vegetation communities and breeding birds resulting from implementation of the proposed project. These MMs will reduce identified and potential significant impacts to a level that is less than significant pursuant to CEQA. Additional or more specific mitigation requirements may be required to obtain the required Clean Water Act (CWA) Section 401 Water Quality Certification from the RWQCB, to obtain a Section 404 Nationwide Permit from the ACOE, and to obtain a Section 1602 Lake and Streambed Alteration Agreement (SAA) from CDFW.

BIO-1 Direct, temporary impacts to jurisdictional waters of the U.S. and State, including wetlands regulated by the ACOE, RWQCB, CDFW, and CCC would occur due to project implementation.

MM-1 Temporary disturbance areas will be restored to pre-construction contours and conditions. Because habitat restoration will be limited to restoration of the shoreline, which is currently unvegetated, to pre-construction conditions a written habitat restoration and revegetation plan is not proposed.

BIO-2 Increased human activity during construction could result in inadvertent, unanticipated impacts to waters of the U.S., including wetlands.

MM-2 To ensure that waters of the U.S., including wetlands, outside of the work footprint are avoided during construction, all wetlands and non-wetland waters to be preserved will be demarcated in the field by the Contractor and reviewed and approved by the Project Biologist.

Additionally, the following conditions are proposed under this MM.

1. The Project Biologist will discuss procedures for minimizing harm to or harassment of wildlife encountered during construction with the Contractor and other key construction personnel prior to activities. 2. If trash and debris need to be stored overnight during the maintenance activities, fully covered trash receptacles that are animal-proof and weather-

8690-01 22 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

proof will be used by the maintenance contractor to contain all food, food scraps, food wrappers, beverage containers, and other miscellaneous trash. Alternatively, standard trash receptacles may be used during the day, but must be removed each night. 3. Temporary structures and storage of construction materials will not be located on the beach or within 50 feet of San Juan Creek. Staging/storage areas for construction equipment and materials will not be located in jurisdictional waters, including wetlands and riparian areas. 4. Pets on or adjacent to construction sites will not be permitted by the operator.

BIO-3 Direct impacts to the federally endangered California least tern and federally threatened western snowy plover could occur if work is to occur during the combined breeding season for these species (March 15–September 15).

MM-3 To avoid direct impacts to the California least tern and western snowy plover, construction activities will be conducted outside of the combined breeding season for these species (March 15–September 15). If construction must occur during the breeding season for these species, the following measures shall be implemented:

a. Prior to construction-related activities occurring in the project footprint, a qualified biologist shall conduct a pre-construction survey for these species within 72 hours prior to construction. b. If no nesting California least terns or western snowy plovers are found to be present within areas up to 500 feet of the proposed project footprint, then project construction may proceed without restrictions. c. If nesting California least terns or western snowy plovers are found on site or in off-site bordering areas, construction within 500 feet shall not commence until temporary noise barrier(s) are in place between the construction area and occupied habitat. The location of the noise barrier(s) shall be determined by the biologist and acoustician. Construction noise levels shall be monitored at the edge of occupied habitat with the noise barrier(s) in place. Other measures shall be implemented, as necessary, to reduce noise levels to below 60 dB(A), or to the ambient noise level if it already exceeds 60 dB(A) at the edge of the occupied habitat. d. Construction noise shall be monitored at least twice weekly to verify that noise at the edge of occupied habitat is maintained below 60 dB(A), or to the

8690-01 23 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

ambient noise level if it already exceeds 60 dB(A). If this requirement cannot be met, other measures shall be implemented as necessary, to reduce noise levels to below 60 dB(A) or to the ambient noise level if it already exceeds 60 dB(A). Such measures may include, but are not limited to, modifying the placement of construction equipment and limitations on the simultaneous use of equipment.

BIO-3 Project-related runoff may enter off-site waters of the U.S., specifically the Pacific Ocean and the mouth of San Juan Creek via surface flow.

MM-4(a) The Project will incorporate methods to control runoff, including site design, source control, and treatment control Best Management Practices (BMPs). The Project will be required to meet NPDES regulations and incorporate BMPs during construction including, but not limited to, protective fencing, straw bales, gravel bags, sand bags, and the periodic watering of bare areas, where appropriate.

MM-4(b) All equipment maintenance, staging areas, and dispensing of fuel, oil, or other toxicants should occur in designated upland areas outside of any adjacent waters of the U.S./State.

BIO-5 Impacts to breeding songbirds, shorebirds and raptors may occur due to construction- related noise if construction occurs during the breeding season (February 1–September 15 for most bird species; and January 1–August 31 for raptors).

MM-5 If construction activities occur during the combined bird breeding season (i.e., February 15–August 31 for most bird species; and January 1–August 31 for raptors), a one-time biological survey for nesting bird species, including raptors, shall be conducted within 72 hours prior to construction to identify any active nesting. If occupied nests are present within 500 feet of the construction area, a buffer shall be established between the work site and active nest so that nesting activities are not interrupted. The buffer shall be delineated in the field by installing temporary fencing and shall remain intact throughout the maintenance work or until the nest is no longer active. The buffer width will be determined by the Project Biologist and will take into consideration species sensitivity and localized conditions (e.g., width and type of screening vegetation between the nest and proposed activity, terrain, existing level of human activity within the buffer, and in the surrounding area).

8690-01 24 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

7 REFERENCES

14 CCR 15000–15387 and Appendix A–L. Guidelines for Implementation of the California Environmental Quality Act, as amended.

16 U.S.C. 668–668d. Bald and Golden Eagle Protection Act.

16 U.S.C. 703–712. Migratory Bird Treaty Act, as amended.

16 U.S.C. 1531–1544. Endangered Species Act, as amended.

33 CFR 328.1–328.5. Definition of Waters of the United States.

ACOE (U.S. Army Corps of Engineers). 1987. Corps of Engineers Wetlands Delineation Manual. Online ed. Wetlands Research Program Technical Report Y-87-1. Vicksburg, Mississippi: Environmental Laboratory, U.S. Army Corps of Engineers Waterways Experiment Station. January 1987. Accessed September 1, 2010. http://www.fed center.gov/Bookmarks/index.cfm?id=6403&pge_id=1606.

ACOE. 2008. Interim Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Arid West Region. Wetlands Regulatory Assistance Program publication No. ERDC/EL TR- 06-18. Vicksburg, Mississippi: Environmental Laboratory, U.S. Army Corps of Engineers, U.S. Army Engineer Research and Development Center. December 2006. http://acwc.sdp. sirsi.net/client/search/asset/1003134;jsessionid=BD1AF4EEC5E194678CCFD0647884A 65E.enterprise-15000.

ACOE and EPA (U.S. Environmental Protection Agency). 2008. Clean Water Act Jurisdiction Following the U.S. Supreme Court’s Decision in Rapanos v. United States & Carabell v. United States. Washington, D.C.: EPA. December 2, 2008.

AOU. 2012. Check-List of North American Birds: List of the 2,078 Bird Species Known From the AOU Check-list Area. Accessed from http://www.aou.org/checklist/north/full.php

Bing Maps. 2015. http://www.bing.com/maps/

California Fish and Game Code, Section 1600–1616. Division 2: Department of Fish and Game, Chapter 6: Fish and Wildlife Protection and Conservation.

California Fish and Game Code, Sections 3500–3516. Division 4: Birds and Mammals, Part 2: Birds, Chapter 1: General Provisions.

8690-01 25 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

California Fish and Game Code, Section 4700. Division 4: Birds and Mammals; Part 3: Mammals; Chapter 8: Fully Protected Mammals.

California Fish and Game Code, Section 5050. Division 5: Protected Reptiles and Amphibians; Chapter 2: Fully Protected Reptiles and Amphibians.

California Fish and Game Code, Section 5500–5522. Division 6: Fish; Chapter 1: Miscellaneous.

California Public Resources Code, Sections 30000–30900. California Coastal Act of 1976.

CDFW (California Department of Fish and Wildlife). 2015a. State and Federally listed endangered and threatened animals of California. January 2015. https://www.dfg.ca .gov/biogeodata/cnddb/pdfs/TEAnimals.pdf

CDFW. 2015b. State and federally listed endangered, threatened, and rare plants of California. California Natural Diversity Database. CDFW, Biogeographic Data Branch. January 2015. Accessed January 2015. https://www.dfg.ca.gov/biogeodata/ cnddb/pdfs/ TEPlants.pdf

CDFW. 2015c. Special Vascular Plants, Bryophytes, and Lichens List. California Natural Diversity Database. January 2015. Accessed January 2015. https://www.dfg.ca.go v/biogeodata/cnddb/pdfs/SPPlants.pdf

CDFW. 2015d. “Special Animals (898 taxa).” CDFW, Biogeographic Data Branch. January 2015. Accessed January 2015. http://www.dfg.ca.gov/biogeodata/cnddb/pdfs/SP Animals.pdf

CDFW 2015e. Rarefind. Version 5. California Natural Diversity Database. Accessed January 2015.

CNPS (California Native Plant Society). 2013. Inventory of Rare and Endangered Plants (online edition, v8-01a). Sacramento, California: California Native Plant Society. Accessed September 2013. http://cnps.site.aplus.net/cgi-bin/inv/inventory.cgi.

CNPS. 2015. Inventory of Rare and Endangered Plants (online edition, v8-01a). Sacramento, California: California Native Plant Society. Accessed January 2015.

County of Orange. 1992. Habitat Classification System: Natural Resources Geographic Information System (GIS) Project. Prepared by J. Gray (Dames & Moore) and D. Bramlet (Consulting Biologist) for T.B. Mathews (County of Orange). Santa Ana, California: County of Orange Environmental Management Agency, Planning Department. May 1992.

8690-01 26 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

County of Orange. 2006. Southern Subregion Natural Community Conservation Plan/Master Streambed Alteration Agreement/Habitat Conservation Plan (NCCP/MSAA/HCP), Draft Environmental Impact Report/Environmental Impact Statement, and Implementation Agreement. 5 vols. SCH no. 2006061140. July 2006.

County of Riverside. 2003. “Birds.” Volume 2 – The MSHCP Reference Document. Western Riverside County Multiple Species Habitat Conservation Plan. County of Riverside Transportation and Land Management Agency (TLMA). Accessed December 1, 2011. http://www.rctlma.org/mshcp/volume2/birds.html.

Crother, B.I. 2008. Scientific and Standard English Names of Amphibians and Reptiles of North America North of Mexico, with Comments Regarding Confidence in our Understanding. 6th ed. Herpetological Circular No. 37, edited by J.J. Moriarty. Shoreview, Minnesota: Society for the Study of Amphibians and Reptiles.

Dunk, J.R. 1995. “White-Tailed Kite (Elanus leucurus).” The Birds of North America Online, edited by A. Poole. Ithaca, New York: Cornell Lab of Ornithology. Accessed December 2011. http://bna.birds.cornell.edu/bna/species/178.

Grinnell, J., and A.H. Miller. 1944. "The Distribution of the Birds of California." Pacific Coast Avifauna Number 27. Berkeley, California: Copper Ornithological Club. Reprinted in Lee Vining, California: Artemisia Press. April 1986.

Holland, R.F. 1986. Preliminary Descriptions of the Terrestrial Natural Communities of California. Nongame-Heritage Program, California Department of Fish and Game. October 1986.

International Environmental Law Project. 2012. The Legal Status of Monarch Butterflies in California.

Jepson Flora Project. 2013. Jepson Interchange List of Currently Accepted Names of Native and Naturalized Plants of California. Berkeley, California: University of California. Accessed September 18, 2013. http://ucjeps.berkeley.edu/interchange/I_status_1+2.html.

Moyle, P.B. 2002. Inland Fishes of California. Berkeley and Los Angeles, California: University of California Press.

8690-01 27 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

NABA (North American Butterfly Association). 2001. “Checklist of North American Butterflies Occurring North of Mexico.” Adapted from North American Butterfly Association (NABA) Checklist & English Names of North American Butterflies, edited by B. Cassie, J. Glassberg, A. Swengel, and G. Tudor. 2nd ed. Morristown, New Jersey: NABA. Accessed May 2012. http://www.naba.org/pubs/enames2.html.

NOAA (National Oceanic and Atmospheric Administration). 2015. “Tides and Currents.” Newport Beach, Newport Bay Entrance, CA Station Id: 9410580. http://tidesandcurre nts.noaa.gov/datums.html?id=9410580.

Patten, M.A., G. McCaskie, and P. Unitt. Birds of the Salton Sea. Berkley and Los Angeles, California: University of California Press.

Richards, A. 1988. Shorebirds: A Complete Guide To Their Behavior and Migration. New York City: W.H. Smith Publishers Inc.

SDNHM (San Diego Natural History Museum). 2012. “Butterflies of San Diego County. Revised September 2002.” Accessed May 2012 at http://www.sdnhm.org/archive/ research/entomology/sdbutterflies.html.

Small, A. 1994. California Birds: Their Status and Distribution. Vista, California: Ibis Publishing Co.

Unitt, P., A.E. Klovstad, W.E. Haas, P.J. Mock, et al. 2004. San Diego County Bird Atlas. Proceedings of the San Diego Society of Natural History 39. San Diego, California: San Diego Society of Natural History.

USDA (U.S. Department of Agriculture). 2013. “California.” State PLANTS Checklist. Accessed September 18, 2013. http://plants.usda.gov/dl_state.html.

USDA. 2015. Natural Resources Conservation Service (NRCS). Web Soil Survey [web application]. http://websoilsurvey.nrcs.usda.gov/app/.

USFWS (U.S. Fish and Wildlife Service). 2002. Endangered and Threatened Species: Range Extension for Endangered Steelhead in Southern California. Federal Register (67): 21586-21598). May 1.

8690-01 28 February 2015 Mr. Brian Peck Subject: Biological Resources Letter Report and Impacts Analysis, San Juan Creek Outfall Structure Upgrade, South Orange County Wastewater Authority, Dana Point, California

USFWS. 2008. Birds of Conservation Concern 2008. United States Department of Interior, Fish and Wildlife Service, Division of Migratory Bird Management, Arlington, Virginia. 85 pp. [Online version available at ]

USFWS. 2014. Service initiates status review of monarch butterfly under the Endangered Species Act. December 29, 2014. Accessed online January 2015. http://www.fws.gov/ midwest/news/764.html

USFWS. 2015. “Critical Habitat and Occurrence Data” [map]. Accessed January 2015. http://www.fws.gov/data.

Wilson, D.E., and D.M. Reeder, eds. 2005. Mammal Species of the World: A Taxonomic and Geographic Reference. 3rd ed. Baltimore, Maryland: Johns Hopkins University Press.

Zeiner, D.C., W.F. Laudenslayer Jr., K.E. Mayer, and M. White, eds. 1990a. California’s Wildlife: Volume II. Birds. Sacramento, California: California Department of Fish and Game.

Zeiner, D.C., W.F. Laudenslayer Jr., K.E. Mayer, and M. White, eds. 1990b. California’s Wildlife: Volume III. Mammals. Sacramento, California: California Department of Fish and Game.

Sincerely,

______Tricia Wotipka Project Manager

Att: Figures 1–3 Appendices A—E

8690-01 29 February 2015 y West Rosemead Park Monterey Covina 10 PomonaMontclair Hacienda Ontario Bloomington Park Walnut Montebello Heights 60 83 Pico Industry Glen Rivera Diamond Chino Avon Rowland Chino Mira Rubidoux La Habra Bar 142 Whittier Heights Hills 71 LomaPedley HeightsLos Angeles County DowneySanta Fe South La Orange County 19 SpringsWhittierHabra Brea Norco Norwalk 90 La MiradaFullerton Bellflower Placentia 91 Yorba LindaRiverside County Cerritos Buena Corona Park Orange County Lakewood Anaheim 15 Cypress 55 39 57 Los Orange Alamitos Garden Seal 22 Grove Tustin Foothills Beach Westminster Santa Ana HuntingtonFountain Tustin Beach Valley 241 Costa 405 Irvine Mesa El Toro Rancho 1 Santa Margarita Newport 133 Laguna Mission Coto De Beach 73 Hills Aliso Viejo Caza 74 Viejo 5 Trabuco Laguna Highlands Beach Laguna NiguelSan Juan Capistrano Dana Orange Point San County Pacific Clemente San Diego County Ocean Project Site

0105 Miles Copyright:' 2014 Esri Cam P d FIGURE 1 Regional Map 8690 SOCW SJCOO Junction Structure Rehab Project Z:\Projects\j869001\MAPDOC\DOCUMENT\Figure1_Regional.mxd 5

Project Site 1

02,0001,000 Feet

SOURCE: USGS 7.5-Minute Series - Dana Point Quadrangle. FIGURE 2 Vicinity Map 8690 PROJECT NAME Z:\Projects\j869001\MAPDOC\DOCUMENT\Figure2_Vicinity.mxd Study Area Vegetation Communities

Area of Temporary Impact BEA, Beach (ACOE/RWQCB/CDFW)

Existing Junction Structure OW, Open Water (ACOE/RWQCB/CDFW)

Staging Area dMFS, Disturbed Mulefat Scrub (ACOE/RWQCB/CDFW)

0 100 200 Site Entrance/Access DEV, Urban/Developed Feet

SOURCE: Bing Maps, 2015. Black & Veatch, 2015. FIGURE 3 Biological Resources 8690 SOCW SJCOO Junction Structure Rehab Project Z:\Projects\j869001\MAPDOC\DOCUMENT\BiologicalResources.mxd

APPENDIX A Plant Compendium

VASCULAR SPECIES

DICOTS

ADOXACEAE – MUSKROOT FAMILY Sambucus nigra ssp. caerulea—blue elderberry

ANACARDIACEAE – SUMAC OR CASHEW FAMILY Rhus integrifolia—lemonade sumac

ASTERACEAE – SUNFLOWER FAMILY Heterotheca grandiflora – telegraphweed Baccharis salicifolia – mulefat

FABACEAE—LEGUME FAMILY * Acacia cyclops—coastal wattle * Lotus corniculatus—bird's-foot trefoil

GERANIACEAE—GERANIUM FAMILY * Erodium botrys—longbeak stork's bill

MYRTACEAE—MYRTLE FAMILY * Eucalyptus camaldulensis—river redgum

PLATANACEAE—PLANE TREE, SYCAMORE FAMILY Platanus racemosa—California sycamore

POLYGONACEAE—BUCKWHEAT FAMILY Eriogonum fasciculatum—Eastern Mojave buckwheat

SALICACEAE—WILLOW FAMILY Salix exigua—narrowleaf willow

SCROPHULARIACEAE—FIGWORT FAMILY * Myoporum laetum—ngaio tree

SOLANACEAE—NIGHTSHADE FAMILY * Nicotiana glauca—tree tobacco

8690-01 A-1 February 2015 APPENDIX A (Continued)

GYMNOSPERMS AND GNETOPHYTES

PINACEAE—PINE FAMILY * Pinus sp.—pine

MONOCOTS

ARECACEAE—PALM FAMILY * Phoenix canariensis—Canary Island date palm * Washingtonia robusta—Washington fan palm

POACEAE—GRASS FAMILY * Arundo donax—giant reed * Cynodon dactylon—Bermudagrass

* Signifies introduced (non-native) species

8690-01 A-2 February 2015

APPENDIX B Wildlife Compendium

BIRD SPECIES

EMBERIZINES

EMBERIZIDAE – EMBERIZIDS Zonotrichia leucophrys – White-crowned sparrow

FINCHES

FRINGILLIDAE – FRINGILLINE AND CARDUELINE FINCHES AND ALLIES Carpodacus mexicanus – House finch

HERONS AND BITTERNS

ARDEIDAE – HERONS, BITTERNS, AND ALLIES Egretta thula – Snowy egret Nycticorax nycticorax – Black-crowned night-heron

HUMMINGBIRDS

TROCHILIDAE – HUMMINGBIRDS Calypte anna – Anna’s hummingbird

JAYS, MAGPIES AND CROWS

CORVIDAE – CROWS AND JAYS Corvus brachyrhynchos – American crow

PELICANS

PELECANIDAE – PELICANS Pelecanus occidentalis – Brown pelican

PIGEONS AND DOVES

COLUMBIDAE – PIGEONS AND DOVES * Columba livia – Rock pigeon (rock dove)

RAILS, GALLINULES AND COOTS

RALLIDAE – RAILS, GALLINULES, AND COOTS Fulica americana – American coot

8690-01 B-1 February 2015 APPENDIX B (Continued)

SHOREBIRDS RECURVIROSTRIDAE – STILTS AND AVOCETS Himantopus mexicanus – Black-necked stilt

CHARADRIIDAE – LAPWINGS AND PLOVERS Charadrius semipalmatus—Semipalmated plover

SCOLOPACIDAE – SANDPIPERS, PHALAROPES, AND ALLIES Tringa semipalmata – Willet

STARLINGS AND ALLIES STURNIDAE – STARLINGS * Sturnus vulgaris – European starling

TERNS AND GULLS LARIDAE – GULLS, TERNS, AND SKIMMERS Larus californicus – California gull Larus occidentalis – Western gull

WATERFOWL ANATIDAE – DUCKS, GEESE, AND SWANS Anas platyrhynchos – Mallard

WOOD WARBLERS AND ALLIES PARULIDAE – WOOD-WARBLERS Setophaga coronata—Yellow-rumped warbler

WOODPECKERS PICIDAE – WOODPECKERS AND ALLIES Picoides nuttallii—Nuttall’s woodpecker

MAMMAL SQUIRRELS SCIURIDAE – SQUIRRELS Spermophilus(Otospermophilus) beecheyi – California ground squirrel

* Signifies introduced (non-native) species

8690-01 B-2 February 2015

APPENDIX C Plant Species Potentially Occurring within the Project Study Area

Habitat Requirements/ Common Status: Federal/ State/ Life Form/Blooming Period/ Scientific Name Name CRPR/ NCCP/HCP¹ Elevation Range Status on Site or Potential to Occur Aphanisma blitoides aphanisma None/ None/ 1B.2/ Coastal bluff scrub, Coastal dunes, Coastal Low potential to occur. No suitable vegetation present. None scrub/sandy/ annual herb/ Mar-Jun/ 3-1001 Species recorded in the vicinity. Atriplex coulteri Coulter's None/ None/ 1B.2/ Coastal bluff scrub, Coastal dunes, Coastal Low potential to occur. No suitable vegetation present. saltbush None scrub, Valley and foothill grassland/alkaline or Would have been observed if present. Species clay/ perennial herb/ Mar-Oct/ 10-1509 recorded in the vicinity. Atriplex pacifica South Coast None/ None/ 1B.2/ Coastal bluff scrub, Coastal dunes, Coastal Low potential to occur. No suitable vegetation present. saltscale None scrub, Playas/ annual herb/ Mar-Oct/ 0-459 Species recorded in the region. Atriplex parishii Parish's None/ None/ 1B.1/ Chenopod scrub, Playas, Vernal pools/alkaline/ Not expected to occur. The site is outside of the brittlescale None annual herb/ Jun-Oct/ 82-6234 species’ known elevation range and there is no suitable vegetation present. Species recorded in the region. Atriplex serenana Davidson's None/ None/ 1B.2/ Coastal bluff scrub, Coastal scrub/alkaline/ Not expected to occur. The site is outside of the var. davidsonii saltscale None annual herb/ Apr-Oct/ 33-656 species’ known elevation range and there is no suitable vegetation present. Species recorded in the region. Brodiaea filifolia thread-leaved FT/ CE/ 1B.1/ None Chaparral(openings), Cismontane woodland, Not expected to occur. The site is outside of the brodiaea Coastal scrub, Playas, Valley and foothill species’ known elevation range and there is no grassland, Vernal pools/often clay/ perennial suitable vegetation present. Species recorded in the bulbiferous herb/ Mar-Jun/ 82-3675 region. Calochortus Catalina None/ None/ 4.2/ Chaparral, Cismontane woodland, Coastal Not expected to occur. The site is outside of the catalinae mariposa lily Covered scrub, Valley and foothill grassland/ perennial species’ known elevation range and there is no bulbiferous herb/ (Feb),Mar-Jun/ 49-2297 suitable vegetation present. Species not recorded in the region. Calochortus weedii intermediate None/ None/ 1B.2/ Chaparral, Coastal scrub, Valley and foothill Not expected to occur. The site is outside of the var. intermedius mariposa lily Covered grassland/rocky, calcareous/ perennial species’ known elevation range and there is no bulbiferous herb/ May-Jul/ 344-2805 suitable vegetation present. Species recorded in the vicinity. Centromadia parryi southern None/ None/ 1B.1/ Marshes and swamps(margins), Valley and Not expected to occur. No suitable vegetation present. ssp. australis tarplant None foothill grassland(vernally mesic), Vernal pools/ Species recorded in the region. annual herb/ May-Nov/ 0-1575 Cercocarpus Small-flowered None/ None/ None/ Chaparral/ evergreen perennial shrub/ Mar-May Not expected to occur. No suitable vegetation present. minutiflorus mountain Covered Would have been observed if present. Species not mahogany recorded in the region.

8690-01 C-1 February 2015 APPENDIX C (Continued)

Habitat Requirements/ Common Status: Federal/ State/ Life Form/Blooming Period/ Scientific Name Name CRPR/ NCCP/HCP¹ Elevation Range Status on Site or Potential to Occur Chaenactis Orcutt's None/ None/ 1B.1/ Coastal bluff scrub(sandy), Coastal dunes/ Low potential to occur. No suitable vegetation present. glabriuscula var. pincushion None annual herb/ Jan-Aug/ 0-328 Species recorded in the vicinity. orcuttiana Chorizanthe long-spined None/ None/ 1B.2/ Chaparral, Coastal scrub, Meadows and seeps, Not expected to occur. The site is outside of the polygonoides var. spineflower None Valley and foothill grassland, Vernal pools/often species’ known elevation range and there is no longispina clay/ annual herb/ Apr-Jul/ 98-5020 suitable vegetation present. Species recorded in the region. Clinopodium San Miguel None/ None/ 1B.2/ Chaparral, Cismontane woodland, Coastal Not expected to occur. The site is outside of the chandleri savory None scrub, Riparian woodland, Valley and foothill species’ known elevation range and there is no grassland/Rocky, gabbroic or metavolcanic/ suitable vegetation present. Would have been perennial shrub/ Mar-Jul/ 394-3527 observed if present. Species recorded in the region. Comarostaphylis summer holly None/ None/ 1B.2/ Chaparral, Cismontane woodland/ perennial Not expected to occur. The site is outside of the diversifolia ssp. None evergreen shrub/ Apr-Jun/ 98-2592 species’ known elevation range and there is no diversifolia suitable vegetation present. Would have been observed if present. Species recorded in the vicinity. Dichondra western None/ None/ 4.2/ Chaparral, Cismontane woodland, Coastal Not expected to occur. The site is outside of the occidentalis dichondra Covered scrub, Valley and foothill grassland/ perennial species’ known elevation range and there is no rhizomatous herb/ (Jan),Mar-Jul/ 164-1640 suitable vegetation present. Species not recorded in the region. Dudleya Blochman's None/ None/ 1B.1/ Coastal bluff scrub, Chaparral, Coastal scrub, Not expected to occur. The site is outside of the blochmaniae ssp. dudleya Covered Valley and foothill grassland/rocky, often clay or species’ known elevation range and there is no blochmaniae serpentinite/ perennial herb/ Apr-Jun/ 16-1476 suitable vegetation present. Species recorded in the vicinity. Dudleya cymosa Santa Monica None/ None/ 1B.1/ Chaparral, coastal crub/ volcanic or Not expected to occur. The site is outside of the ssp. ovatifolia dudleya Covered sedimentary, rocky/ perennial herb/ Mar-Jun/ species’ known elevation range and there is no 300-5025 suitable vegetation present. Species not recorded in the region. Dudleya multicaulis many-stemmed None/ None/ 1B.2/ Chaparral, Coastal scrub, Valley and foothill Not expected to occur. The site is outside of the dudleya None grassland/often clay/ perennial herb/ Apr-Jul/ 49- species’ known elevation range and there is no 2592 suitable vegetation present. Species recorded in the vicinity. Dudleya stolonifera Laguna Beach FT/ CT/ 1B.1/ Covered Chaparral, Cismontane woodland, Coastal Not expected to occur. The site is outside of the dudleya scrub, Valley and foothill grassland/rocky/ species’ known elevation range and there is no perennial stoloniferous herb/ May-Jul/ 33-853 suitable vegetation present. Species recorded in the region.

8690-01 C-2 February 2015 APPENDIX C (Continued)

Habitat Requirements/ Common Status: Federal/ State/ Life Form/Blooming Period/ Scientific Name Name CRPR/ NCCP/HCP¹ Elevation Range Status on Site or Potential to Occur Dudleya viscida sticky dudleya None/ None/ 1B.2/ Coastal bluff scrub, Chaparral, Cismontane Not expected to occur. The site is outside of the None woodland, Coastal scrub/rocky/ perennial herb/ species’ known elevation range and there is no May-Jun/ 33-1804 suitable vegetation present. Species recorded in the region. Eryngium Pendleton None/ None/ 1B.1/ Coastal bluff scrub, Valley and foothill grassland, Not expected to occur. The site is outside of the pendletonense button-celery None Vernal pools/clay, vernally mesic/ perennial species’ known elevation range and there is no herb/ Apr-Jun(Jul)/ 49-361 suitable vegetation present. Species recorded in the region. Euphorbia misera cliff spurge None/ None/ 2B.2/ Coastal bluff scrub, Coastal scrub, Mojavean Not expected to occur. The site is outside of the Covered desert scrub/rocky/ perennial shrub/ Dec- species’ known elevation range and there is no Aug(Oct)/ 33-1640 suitable vegetation present. Would have been observed if present. Species found within Doheny State Beach (record from 1976). Species recorded in the vicinity. Harpagonella Palmer's None/ None/ 4.2/ Chaparral, Coastal scrub, Valley and foothill Not expected to occur. The site is outside of the palmeri grapplinghook Covered grassland/clay/ annual herb/ Mar-May/ 66-3133 species’ known elevation range and there is no suitable vegetation present. Species recorded in the region. Hesperocyparis Tecate cypress None/ None/ 1B.1/ Closed-cone coniferous forest, Chaparral/clay, Not expected to occur. No suitable vegetation present. forbesii Covered gabbroic or metavolcanic/ perennial evergreen Species not recorded in the region. tree/ N.A./ 262-4921 Hordeum vernal barley None/ None/ 3.2/ None Coastal dunes, Coastal scrub, Valley and foothill Not expected to occur. The site is outside of the intercedens grassland(saline flats and depressions), Vernal species’ known elevation range. Species recorded in pools/ annual herb/ Mar-Jun/ 16-3281 the vicinity. Horkelia cuneata mesa horkelia None/ None/ 1B.1/ Chaparral(maritime), Cismontane woodland, Not expected to occur. The site is outside of the var. puberula None Coastal scrub/sandy or gravelly/ perennial herb/ species’ known elevation range and there is no Feb-Jul(Sep)/ 230-2657 suitable vegetation present. Species recorded in the region. Imperata brevifolia California None/ None/ 2B.1/ Chaparral, Coastal scrub, Mojavean desert Low potential to occur. Limited suitable vegetation satintail None scrub, Meadows and seeps(often alkali), present. Species recorded in the region. Riparian scrub/mesic/ perennial rhizomatous herb/ Sep-May/ 0-3986

8690-01 C-3 February 2015 APPENDIX C (Continued)

Habitat Requirements/ Common Status: Federal/ State/ Life Form/Blooming Period/ Scientific Name Name CRPR/ NCCP/HCP¹ Elevation Range Status on Site or Potential to Occur Isocoma menziesii decumbent None/ None/ 1B.2/ Chaparral, Coastal scrub(sandy, often in Not expected to occur. The site is outside of the var. decumbens goldenbush None disturbed areas)/ perennial shrub/ Apr-Nov/ 33- species’ known elevation range and there is no 443 suitable vegetation present. Would have been observed if present. Species recorded in the region. Juncus leiospermus Ahart's dwarf None/ None/ 1B.2/ Valley and foothill grassland(mesic)/ annual Not expected to occur. No suitable vegetation present. var. ahartii rush Covered herb/ Mar-May/ 98-751 Species not recorded in the region. Lasthenia glabrata Coulter's None/ None/ 1B.1/ Marshes and swamps(coastal salt), Playas, Not expected to occur. No suitable vegetation present. ssp. coulteri goldfields None Vernal pools/ annual herb/ Feb-Jun/ 3-4003 Species recorded in the region. Lepechinia heart-leaved None/ None/ 1B.2/ Closed-cone coniferous forest, Chaparral, Not expected to occur. No suitable vegetation present. cardiophylla pitcher sage Covered Cismontane woodland/ perennial shrub/ Apr-Jul/ Species not recorded in the region. 1706-4495 Lepidium virginicum Robinson's None/ None/ 4.3/ None Chaparral, Coastal scrub/ annual herb/ Jan-Jul/ Not expected to occur. No suitable vegetation present. var. robinsonii pepper-grass 3-2904 Species not recorded in the region. Lycium brevipes Santa Catalina None/ None/ 1B.1/ Coastal bluff scrub, Coastal scrub/ perennial Not expected to occur. No suitable vegetation present. var. hassei Island desert- None deciduous shrub/ Jun(Aug)/ -213-984 Would have been observed if present. Species thorn recorded in the region. Monardella intermediate None/ None/ 1B.3/ Chaparral, Cismontane woodland, Lower Not expected to occur. The site is outside of the hypoleuca ssp. monardella None montane coniferous forest(sometimes)/Usually species’ known elevation range and there is no intermedia understory/ perennial rhizomatous herb/ Apr- suitable vegetation present. Species recorded in the Sep/ 1312-4101 region. Myosurus minimus little mousetail None/ None/ 3.1/ None Valley and foothill grassland, Vernal Not expected to occur. The site is outside of the ssp. apus pools(alkaline)/ annual herb/ Mar-Jun/ 66-2100 species’ known elevation range and there is no suitable vegetation present. Species recorded in the region. Nama stenocarpum mud nama None/ None/ 2B.2/ Marshes and swamps(lake margins, riverbanks)/ Not expected to occur. The site is outside of the None annual / perennial herb/ Jan-Jul/ 16-1640 species’ known elevation range and there is no suitable vegetation present. Species recorded in the region. Navarretia prostrata prostrate vernal None/ None/ 1B.1/ Coastal scrub, Meadows and seeps, Valley and Not expected to occur. The site is outside of the pool navarretia None foothill grassland(alkaline), Vernal pools/Mesic/ species’ known elevation range and there is no annual herb/ Apr-Jul/ 49-3970 suitable vegetation present. Species recorded in the region.

8690-01 C-4 February 2015 APPENDIX C (Continued)

Habitat Requirements/ Common Status: Federal/ State/ Life Form/Blooming Period/ Scientific Name Name CRPR/ NCCP/HCP¹ Elevation Range Status on Site or Potential to Occur Nolina cismontana chaparral nolina None/ None/ 1B.2/ Chaparral, Coastal scrub/sandstone or gabbro/ Not expected to occur. The site is outside of the None perennial evergreen shrub/ (Mar),May-Jul/ 459- species’ known elevation range and there is no 4183 suitable vegetation present. Would have been observed if present. Species recorded in the region. Pentachaeta aurea Allen's None/ None/ 1B.1/ Coastal scrub(openings), Valley and foothill Not expected to occur. The site is outside of the ssp. allenii pentachaeta None grassland/ annual herb/ Mar-Jun/ 246-1706 species’ known elevation range and there is no suitable vegetation present. Species recorded in the vicinity. Phacelia south coast None/ None/ 3.2/ None Chaparral, Coastal dunes, Coastal scrub, Not expected to occur. The site is outside of the ramosissima var. branching Marshes and swamps(coastal salt)/sandy, species’ known elevation range. Species recorded in austrolitoralis phacelia sometimes rocky/ perennial herb/ Mar-Aug/ 16- the vicinity. 984 Pseudognaphalium white rabbit- None/ None/ 2B.2/ Chaparral, Cismontane woodland, Coastal Not expected to occur. No suitable vegetation present. leucocephalum tobacco None scrub, Riparian woodland/sandy, gravelly/ Species recorded in the vicinity. perennial herb/ (Jul),Aug-Nov(Dec)/ 0-6890 Quercus Scrub oak None/ None/ None/ Chaparral, coastal sage scrub/ perennial Not expected to occur. No suitable vegetation present. berberidifolia Covered evergreen shrub/ Feb-Mar Would have been observed if present. Species not recorded in the region. Quercus dumosa Nuttall's scrub None/ None/ 1B.1/ Closed-cone coniferous forest, Chaparral, Not expected to occur. The site is outside of the oak Covered Coastal scrub/sandy, clay loam/ perennial species’ known elevation range and there is no evergreen shrub/ Feb-Apr(Aug)/ 49-1312 suitable vegetation present. Would have been observed if present. Species recorded in the region. Romneya coulteri Coulter's matilija None/ None/ 4.2/ Chaparral, Coastal scrub/Often in burns/ Not expected to occur. No suitable vegetation present. poppy Covered perennial rhizomatous herb/ Mar-Jul/ 66-3937 Species not recorded in the region. Senecio aphanactis chaparral None/ None/ 2B.2/ Chaparral, Cismontane woodland, Coastal Not expected to occur. The site is outside of the ragwort None scrub/sometimes alkaline/ annual herb/ Jan-Apr/ species’ known elevation range and there is no 49-2625 suitable vegetation present. Species recorded in the vicinity. Sidalcea salt spring None/ None/ 2B.2/ Chaparral, Coastal scrub, Lower montane Not expected to occur. The site is outside of the neomexicana checkerbloom None coniferous forest, Mojavean desert scrub, species’ known elevation range and there is no Playas/alkaline, mesic/ perennial herb/ Mar-Jun/ suitable vegetation present. Species recorded in the 49-5020 region. Suaeda esteroa estuary seablite None/ None/ 1B.2/ Marshes and swamps(coastal salt)/ perennial Not expected to occur. No suitable vegetation present. None herb/ May-Oct(Jan)/ 0-16 Species recorded in the region.

8690-01 C-5 February 2015 APPENDIX C (Continued)

Habitat Requirements/ Common Status: Federal/ State/ Life Form/Blooming Period/ Scientific Name Name CRPR/ NCCP/HCP¹ Elevation Range Status on Site or Potential to Occur Tetracoccus dioicus Parry's None/ None/ 1B.2/ Chaparral, Coastal scrub/ perennial deciduous Not expected to occur. The site is outside of the tetracoccus None shrub/ Apr-May/ 541-3281 species’ known elevation range and there is no suitable vegetation present. Would have been observed if present. Species recorded in the vicinity. Verbesina dissita big-leaved FT/ CT/ 1B.1/ None Chaparral(maritime), Coastal scrub/ perennial Not expected to occur. The site is outside of the crownbeard herb/ Apr-Jul/ 148-673 species’ known elevation range and there is no suitable vegetation present. Species recorded in the region. 1 Species found within USGS 7.5-minute Dana Point quadrangle and surrounding 6 quadrangles (Laguna Beach, San Juan Capistrano, Canada Gobernadora, San Clemente, San Onofre Bluff) (CNPS 2015).

Status Legend: FE: Federally listed as endangered FT: Federally listed as threatened FC: Federal Candidate for listing DL: Delisted CE: State listed as endangered CT: State listed as threatened CR: State Rare CRPR 1A: Plants Presumed Extirpated in California and Either Rare or Extinct Elsewhere CRPR 1B: Plants Rare, Threatened, or Endangered in California and Elsewhere CRPR 2A: Plants Presumed Extirpated in California, But More Common Elsewhere CRPR 2B: Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere CRPR 3: Plants About Which More Information is Needed - A Review List CRPR 4: Plants of Limited Distribution - A Watch List .1 Seriously threatened in California (over 80% of occurrences threatened / high degree and immediacy of threat) .2 Moderately threatened in California (20-80% occurrences threatened / moderate degree and immediacy of threat) .3 Not very threatened in California (<20% of occurrences threatened / low degree and immediacy of threat or no current threats known)

Covered: Covered under Central/Coastal Orange County NCCP/HCP

8690-01 C-6 February 2015

APPENDIX D Special-Status Wildlife Species Potentially Occurring within the Project Study Area

Status: Federal/ Scientific Name Common Name State/ Other Primary Habitat Associations Status on Site or Potential to Occur* Amphibians Anaxyrus Arroyo toad FE/ SSC/ Covered Semi-arid regions near washes or Not expected to occur. There are no suitable streams californicus intermittent streams, including valley-foothill or washes present. The area of San Juan Creek is too and desert riparian, desert wash, etc. urban and influenced by the tide to support this species. There is considerable urban runoff present within the creek which may prevent sensitive amphibians from being present. This species was recorded within the region. Aneides lugubris Arboreal None/ None/ Moist habitats, including coastal oak Not expected to occur. There is no suitable habitat salamander Covered woodlands, oak forests, sycamore riparian, present, and the site is too urban and influenced by tide coastal sand dunes; found on mossy rock to support species. The considerable urban runoff may faces, under rocks, woody debris, stumps prevent sensitive amphibians from being present. This species was not recorded in the region. Batrachoseps Blackbelly slender None/ None/ Oak woodlands, chaparral, grasslands, Not expected to occur. There is no suitable habitat nigriventris salamander Covered streamsides, oak and pine forests in present, and the site is too urban and influenced by tide mountains and valleys of coast range to support species. The considerable urban runoff may prevent sensitive amphibians from being present. This species was not recorded in the region. Spea [=Scaphiopus] Western spadefoot None/ SSC/ Most common in grasslands, coastal sage Not expected to occur. There are no suitable streams hammondi Covered scrub near rain pools or vernal pools; or washes present. The area of San Juan Creek is too riparian habitats urban and influenced by the tide to support this species. There is considerable urban runoff present within the creek which may prevent sensitive amphibians from being present. This species was recorded within the vicinity. Taricha torosa Coast Range newt None/ SSC/ None Coastal drainages from Mendocino County Low potential to occur. There are no suitable streams to San Diego County. or washes present. The area of San Juan Creek is too urban and influenced by the tide to support this species. There is considerable urban runoff present within the creek which may prevent sensitive amphibians from being present. This species was recorded within the region.

8690-01 D-1 February 2015 APPENDIX D (Continued)

Status: Federal/ Scientific Name Common Name State/ Other Primary Habitat Associations Status on Site or Potential to Occur* Reptiles Aspidoscelis Orange-throated None/ SSC/ Coastal sage scrub, chaparral, grassland, Not expected to occur. There is no suitable habitat located hyperythra whiptail Covered juniper, and oak woodland onsite, and the project area is generally too urban to support this species. This species was recorded in the region. Aspidoscelis tigris Coastal western None/ None/ Coastal sage scrub, chaparral Not expected to occur. There is no suitable habitat located stejnegeri whiptail Covered onsite, and the project area is generally too urban to support this species. This species was recorded in the region. Charina trivirgata Rosy boa None/ None/ Arid scrublands, semi-arid shrublands, rocky Not expected to occur. There is no suitable habitat present. Covered shrublands, deserts, canyons, other rocky This species was not recorded in the region. areas Crotalus ruber Red-diamond None/ SSC/ Variety of shrub habitats where there is Not expected to occur. There is no suitable habitat located rattlesnake Covered heavy brush, large rocks, or boulders onsite, and the project area is generally too urban to support this species. This species was recorded in the region. Diadophis punctatus San Bernardino None/ None/ Moist habitats, including wet meadows, Not expected to occur. There is no suitable habitat present. modestus ringneck snake Covered rocky hillsides, gardens, farmland, This species was not recorded in the region. grassland, chaparral, forests/woodlands Emys marmorata Western pond turtle None/ SSC/ None A thoroughly aquatic turtle of ponds, Low potential to occur. The area of San Juan Creek within marshes, rivers, streams & irrigation ditches, the project study area is too urban and influenced by the usually with aquatic vegetation, below 6000 tide to support this species. There is considerable urban ft elevation. runoff present within the creek which may preclude this species’ presence. This species was recorded within the vicinity. Phrynosoma Blainville’s (coast) None/ SSC/ Coastal sage scrub, annual grassland, Not expected to occur. There is no suitable habitat located blainvillii horned lizard Covered chaparral, oak and riparian woodland, onsite, and the project area is generally too urban to support coniferous forest this species. This species was recorded in the vicinity. Plestiodon Coronado skink None/ SSC/ Grassland, riparian and oak woodland; found Not expected to occur. There is no suitable habitat located skiltonianus Covered in litter, rotting logs, under flat stones onsite, and the project area is generally too urban to support interparietalis this species. This species was recorded in the region. Thamnophis Two-striped garter None/ SSC/ None Streams, creeks, pools, streams with rocky Not expected to occur. The area of San Juan Creek within hammondii snake beds, ponds, lakes, vernal pools the project study area is too urban and influenced by the tide to support this species. There is considerable urban runoff present within the creek which may preclude this species’ presence. This species was recorded within the region.

8690-01 D-2 February 2015 APPENDIX D (Continued)

Status: Federal/ Scientific Name Common Name State/ Other Primary Habitat Associations Status on Site or Potential to Occur* Birds Accipiter cooperii Cooper’s hawk None/ WL/ None Riparian and oak woodlands, montane High potential to occur but moderate potential to nest on canyons site. There are suitable trees for roosting or nesting (e.g., pines, eucalyptus) but limited areas for foraging. This species was recorded in the region. Accipiter striatus Sharp-shinned None/ WL/ Ponderosa pine, black oak, riparian Not expected to occur. This species is an unlikely winter hawk Covered deciduous, mixed conifer & Jeffrey pine migrant; there is no suitable habitat on site. This species habitats. Prefers riparian areas. was not recorded in the region. Agelaius tricolor Tricolored blackbird None/ SE, SSC/ Freshwater marsh, marsh and swamps. Not expected to occur. There is no suitable habitat located None Highly colonial species, most numerous in onsite. This species was recorded in the region. Central Valley & vicinity. Largely endemic to California. Aimophila ruficeps Southern California None/ WL/ Grass-covered hillsides, coastal sage scrub, Not expected to occur. There is no suitable habitat located canescens rufous-crowned Covered chaparral with boulders and outcrops onsite. This species was recorded in the region. sparrow Ammodramus Grasshopper None/ SSC/ None Dense grasslands on rolling hills, lowland Not expected to occur. There is no suitable habitat located savannarum sparrow plains, in valleys & on hillsides on lower onsite. This species was recorded in the region. mountain slopes. Aquila chrysaetos Golden eagle BCC/ FP, WL/ Rolling foothills, mountain areas, sage- Not expected to occur. There is no suitable habitat located Covered juniper flats, & desert. onsite. This species was recorded in the region. Asio otus Long-eared owl None/ SSC/ None Riparian bottomlands grown to tall willows & Not expected to occur. There is no suitable habitat located cottonwoods; also, belts of live oak onsite. This species was recorded in the region. paralleling stream courses. Athene cunicularia Burrowing owl BCC/ SSC/ None Open, dry annual or perennial Not expected to occur. There is no suitable habitat grasslands, deserts & scrublands located onsite. This species was recorded in the characterized by low-growing region. vegetation. Buteo lagopus Rough-legged None/ None/ Open areas near riparian or other Not expected to occur. There is no suitable habitat hawk Covered wooded habitats; nests on cliffs, river located onsite. This species was not recorded in the bluff, and rock outcrops in tundra of region. Canad and Alaska

8690-01 D-3 February 2015 APPENDIX D (Continued)

Status: Federal/ Scientific Name Common Name State/ Other Primary Habitat Associations Status on Site or Potential to Occur* Buteo lineatus Red-shouldered None/ None/ Low-elevation riparian woodlands, especially Moderate potential to occur. There are suitable trees for hawk Covered interspersed with swamps and emergent roosting or perching, and this species is found adjacent to wetlands riparian habitats, such as San Juan Creek. This species was not recorded in the region. Campylorhynchus Coastal cactus BCC/ SSC/ Southern cactus scrub, maritime succulent Not expected to occur. There is no suitable habitat located brunneicapillus wren Covered scrub, cactus thickets in coastal sage scrub onsite. This species was recorded in the vicinity. sandiegensis (San Diego and Orange Counties only) Circus cyaneus Northern harrier None/ SSC/ Coastal salt & fresh-water marsh. Nest & Not expected to occur. There is no suitable breeding habitat Covered forage in grasslands, from salt grass in on site. This species was not recorded in the region. desert sink to mountain cienagas. Charadrius Western snowy FT, BCC/ SE/ Great Basin standing waters, sand shore, High potential to occur. There are potentially suitable sandy alexandrinus plover None wetland on coasts. Nests on sandy marine shores for nesting located within San Juan Creek. This nivosus (nesting) and estuarine shores; in the interior nests on species was not documented in the CNDDB in the project sandy, barren or sparsely vegetated flats vicinity or region. However, California State Parks staff have near saline or alkaline lakes, reservoirs, and anecdotally recorded this species in Doheny State Park. ponds. Elanus leucurus White-tailed kite None/ FP/ None Nests in woodland, riparian, and individual Moderate potential to occur but low potential to nest. There (nesting) trees near open lands; forages is limited suitable foraging habitat onsite. There are opportunistically in grassland, meadows, eucalyptus and pine trees onsite that could provide limited scrubs, agriculture, emergent wetland, nesting habitat. This species was recorded in the vicinity. savanna, and disturbed lands Empidonax trailli Southwestern FE/ SE/ Covered Riparian woodlands in Southern California. Not expected to occur. There is no suitable habitat located extimus willow flycatcher onsite. This species was recorded in the region. Eremophila California horned None/ WL/ None Cismontane woodland, marsh & swamp, Not expected to occur. There is no suitable habitat located alpestris actia lark riparian woodland, valley & foothill onsite. This species was recorded in the region. grassland, wetland. Nests and forages in grasslands disturbed lands, agriculture, and beaches; nests in alpine fell fields of the high Sierra. Falco mexicanus Prairie falcon BCC/ WL/ Inhabits dry, open terrain, either level or Not expected to occur. There is no suitable habitat located Covered hilly. onsite. This species was not recorded in the region.

8690-01 D-4 February 2015 APPENDIX D (Continued)

Status: Federal/ Scientific Name Common Name State/ Other Primary Habitat Associations Status on Site or Potential to Occur* Falco pereginus American peregrine (FD), BCC/ (SD), Near wetlands, lakes, rivers, or other Low potential to forage over San Juan Creek, and not anatum falcon FP/ Covered water; on cliffs, banks, dunes, mounds; expected to nest onsite. This species was not recorded in also, human-made structures. the region. Polioptila Coastal California FT/ SSC/ Covered Nests and forages in various sage scrub Not expected to occur. There is no suitable habitat located californica gnatcatcher communities, often dominated by onsite. This species was recorded in the vicinity. californica California sagebrush and buckwheat; generally avoids nesting in areas with a slope of greater than 40%; majority of nesting at less than 1,000 ft in elevation Sternula California least tern FE/ SE, FP/ None Forages in shallow estuaries and Moderate potential to occur. There are potentially suitable antillarum browni lagoons; nests on sandy beaches or sandy shores for nesting located within San Juan Creek. (nesting colony) exposed tidal flat The species was recorded within the region. Vireo bellii pusillus Least Bell's vireo FE/ SE/ Covered Nests and forages in low, dense riparian Not expected to occur. There is no suitable habitat located (nesting) thickets along water or along dry parts of onsite. The species was recorded within the vicinity. intermittent streams; forages in riparian and adjacent shrubland late in nesting season Mammals Antrozous pallidus Pallid bat None/ SSC/ Grasslands, shrublands, woodlands, forests; Low potential to forage in the project area. No suitable rocky WBWG:H most common in open dry habitats with outcrops, cliffs, and crevices for roosting within the study rocky outcrops for roosting, but also roosts in area but this species could forage over San Juan Creek. man-made structures and trees. This species is recorded in the region. Canis latrans Coyote None/ None/ Open brush, scrub, shrub, and herbaceous Moderate potential to occur. This species is frequently found Covered habitats, and associated opportunistically in urban areas. This species was not recorded in the region. with croplands. Chaetodipus Dulzura pocket None/ SSC/ None Open habitat, coastal scrub, chaparral, oak Not expected to occur. There is no suitable habitat located californicus mouse woodland, chamise and chaparral, mixed onsite. This species is recorded in the vicinity. femoralis conifer habitats. Chaetodipus fallax Northwestern San None/ SSC/ None Coastal scrub, mixed chaparral, sagebrush, Not expected to occur. There is no suitable habitat located fallax Diego pocket desert wash, desert scrub, desert succulent onsite. This species is recorded in the region. mouse shrub, pinyon-juniper, and annual grassland.

8690-01 D-5 February 2015 APPENDIX D (Continued)

Status: Federal/ Scientific Name Common Name State/ Other Primary Habitat Associations Status on Site or Potential to Occur* Choeronycteris Mexican long- None/ SSC/ Desert and montane riparian, desert Low potential to forage in the project area. No suitable rocky mexicana tongued bat WBWG:H succulent scrub, desert scrub, and pinyon– outcrops, cliffs, and crevices for roosting within the study juniper woodland. Roosts in caves, mines, area but this species could forage over San Juan Creek. and buildings. This species is recorded in the vicinity. Dipodomys Stephens’ kangaroo FE/ ST/ None Primarily annual & perennial grasslands, but Not expected to occur. There is no suitable habitat located stephensi rat also occurs in coastal scrub & sagebrush onsite. This species is recorded in the region. with sparse canopy cover. Eumops perotis Western mastiff bat None/ SSC/ Chaparral, coastal and desert scrub, Low potential to forage in the project area. No suitable rocky californicus WBWG:H coniferous and deciduous forest and outcrops, cliffs, and crevices for roosting within the study woodland; roosts in crevices in rocky area but this species could forage over San Juan Creek. canyons and cliffs where the canyon or cliff This species was recorded within the region. is vertical or nearly vertical, trees and tunnels Lasiurus Western red bat None/ None/ Forest, woodland, riparian, mesquite bosque Low potential to forage in the project area. No suitable rocky blossevillii WBWG:H and orchards, including fig, apricot, peach, outcrops, cliffs, and crevices for roosting within the study pear, almond, walnut, and orange; roosts in area but this species could forage over San Juan Creek. tree canopy This species was recorded within the region. Myotis Yuma myotis None/ None/ Riparian, arid scrublands and deserts, and Low potential to forage in the project area. No suitable rocky yumanensis WBWG:M forests associated with water (streams, outcrops, cliffs, and crevices for roosting within the study rivers, tinajas); roosts in bridges, buildings, area but this species could forage over San Juan Creek. cliff crevices, caves, mines, and trees This species was recorded in the region. Neotoma lepida San Diego desert None/ SSC/ Coastal scrub, desert scrub, chaparral, cacti, Not expected to occur. There is no suitable habitat located intermedia woodrat Covered rocky areas onsite. This species is recorded in the vicinity. Nyctinomops Pocketed free-tailed None/ SSC/ Pinyon-juniper woodlands, desert scrub, Low potential to forage in the project area. No suitable rocky femorosaccus bat WBWG:M desert succulent shrub, desert riparian, outcrops, cliffs, and crevices for roosting within the study desert wash, alkali desert scrub, Joshua area but this species could forage over San Juan Creek. tree, palm oases; roosts in high cliffs or rock This species is recorded in the region. outcrops with dropoffs, caverns, buildings Nyctinomops Big free-tailed bat None/ SSC/ Rocky areas; roosts in caves, holes in trees, Low potential to forage in the project area. No suitable rocky macrotis WBWG:MH buildings, and crevices on cliffs and rocky outcrops, cliffs, and crevices for roosting within the study outcrops; forages over water area but this species could forage over San Juan Creek. This species is recorded in the region.

8690-01 D-6 February 2015 APPENDIX D (Continued)

Status: Federal/ Scientific Name Common Name State/ Other Primary Habitat Associations Status on Site or Potential to Occur* Perognathus Pacific pocket FE/ SSC/ Covered Fine-grain sandy substrates in open coastal Not expected to occur; site is outside of known populations longimembris mouse strand, coastal dunes and river alluvium at Dana Point and Camp Pendleton in Orange County. High pacificus urban use of the beach and tidal influence likely preclude species occurring on site. This species is recorded in the vicinity. Taxidea taxus American badger None/ SSC/ None Dry, open, treeless areas; grasslands, Not expected to occur. There is no suitable habitat located coastal scrub, agriculture, pastures, onsite. Additionally, the area of San Juan Creek within the especially with friable soils project study area is too urban and influenced by the tide to support this species This species was recorded within the region. Urocyon Gray fox None/ None/ Shrublands, valley foothill riparian, montane Moderate potential to occur. This species is frequently found cinereoargentus Covered riparian, meadows, croplands in urban areas. This species was not recorded in the region. Invertebrates Branchinecta San Diego fairy FE/ None/ Vernal pools, non-vegetated ephemeral, Not expected to occur. No vernal pools occur onsite. This sandiegonensis shrimp Covered occasionally ditches and road ruts species is recorded in the region. Coelus globosus Globose dune None/ None/ None Coastal dunes Not expected to occur. No coastal dune habitat occurs beetle onsite. This species is recorded in the region. Danaus plexippus Monarch butterfly None/ None/ None Wind-protected tree groves with nectar Moderate potential to occur onsite, low potential to sources and nearby water sources. overwinter. tands of eucalyptus trees present onsite. There is also a known overwintering site on Doheny State Beach. The colony used to be located on a direct line between the entrance kiosk and the public restroom near the beach in eucalyptus trees. They cluster in the trees just to the ocean side of the parking area. In 1995-96, the colony was found at the north end of the same parking lot over a bike path and by the creek. The clusters typically disappear by January in most years. Euphydryas editha Quino checkerspot FE/ None/ Sunny openings within chaparral & coastal Not expected to occur. Site is outside of the USFWS- quino butterfly Covered sage shrublands in parts of Riverside & San recommended survey area and does not support native Diego counties. vegetation with nectar sources. This species was not recorded in the region. Streptocephalus Riverside fairy FE/ None/ Vernal pools, non-vegetated ephemeral Not expected to occur. No vernal pools occur onsite. This woottoni shrimp Covered pools species is recorded in the region.

8690-01 D-7 February 2015 APPENDIX D (Continued)

Status: Federal/ Scientific Name Common Name State/ Other Primary Habitat Associations Status on Site or Potential to Occur* Tryonia imitator Mimic tryonia None/ None/ None Aquatic, brackish marsh, estuary lagoon, Low potential to occur within San Juan Creek. Suitable (=California marsh & swamp, salt marsh, and wetlands ponding is found within study area but lacks suitable brackishwater snail) substrate for this species. This species is recorded in the region. Fish Eucyclogobius tidewater goby FE/ SSC/ None Brackish water habitats along the California Low potential to occur within San Juan Creek. Historic newberryi coast from Agua Hedionda Lagoon, San records within the creek, and this species is recorded in the Diego Co. to the mouth of the Smith River. vicinity. The creek is mostly concrete-lined, and there are no pools, rocks, or other hiding places within the creek for this species. Gila orcuttii Arroyo chub None/ SSC/ None Native to streams from Malibu Cr to San Luis Low potential to occur within San Juan Creek. Historic Rey River basin. Introduced into streams in records within the creek, and this species is recorded in the Santa Clara, Ventura, Santa Ynez, Mohave vicinity. The creek is mostly concrete-lined, and there are no & San Diego river basins. pools, rocks, or other hiding places within the creek for this species. Oncorhynchus southern steelhead FE/ SSC/ None Fed listing refers to pops from Santa Maria Low potential to occur within San Juan Creek. Recent mykiss irideus - southern River south to southern extent of range (San monitoring efforts upstream of the site were negative. The California DPS Mateo Creek in San Diego Co.) creek is federally-designated critical habitat. This species is recorded in the region. * “Vicinity” refers to species recorded in the USGS 7.5-minute Dana Point quadrangle (CDFW 2015). “Region” refers to species recorded within the six quadrangles surrounding USGS 7.5-minute Dana Point quadrangle and surrounding 6 quadrangles (Laguna Beach, San Juan Capistrano, Canada Gobernadora, San Clemente, San Onofre Bluff) (CDFW 2015). Federal Designations: Other: BCC Fish and Wildlife Service: Birds of Conservation Concern WBWG Western Bat Working Group (FD) Federally delisted; monitored for 5 years. L: Low Priority FE Federally listed as Endangered. M: Medium Priority FT Federally listed as Threatened. MH: Medium-High Priority H: High Priority State Designations (August 2012): SSC California Species of Special Concern FP California Department of Fish and Game Protected and Fully Protected Species (SD) State-delisted WL California Department of Fish and Game Watch List Southern Subregion NCCP/HCP: Covered Covered species

8690-01 D-8 February 2015 Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

APPENDIX D: Phase I Cultural Resources Inventory (Dudek, 2015)

February 12, 2015

Mr. Brian Peck South Orange County Water Authority 34156 Del Obisbo Street Dana Point, CA 92629

Subject: Phase I Cultural Resources Inventory Conducted for the San Juan Creek Outfall Project - Negative Findings, Orange County, CA

Dear Mr. Peck:

This letter documents the negative Phase I cultural resources inventory conducted by Dudek for the South Orange County Water Authority (SOCWA) San Juan Creek Outfall Project (Project), located in the City of Dana Point , Orange County (Figure 1). A South Central Coastal Information Center (SCCIC) records search indicated that no cultural resources have been recorded within the area of potential effects (APE). A Native American Heritage Commission (NAHC) Sacred Lands File (SLF) search and subsequent correspondence with tribal representatives did not suggest the presence of any Native American cultural resources. Intensive pedestrian survey conducted of the APE and surrounding area did not identify cultural resources, and further observed that this area (consisting entirely of beach sands) is not suitable to support the presence of intact cultural deposits.

PROJECT DESCRIPTION AND LOCATION

The project consists of the rehabilitation of an existing junction structure, situated within wave and wind deposited beach sand, adjacent to the mouth of the San Juan Creek and south of Pacific Coast Hwy. This work will fall within an unsectioned Public Lands Survey System (PLSS) area, with an inferred location as follows: Township 8 South, Range 8 West, Section 23; Dana Point, CA 1:24,000 USGS map (Figure 2).

REGULATORY FRAMEWORK

CEQA requires that all private and public activities not specifically exempted be evaluated for the potential to impact the environment, including effects to historical resources. Historical resources are recognized as part of the environment under CEQA. It defines historical resources as “any object, building, structure, site, area, or place, which is Subject: Phase I Cultural Resources Inventory Conducted for the San Juan Creek Outfall Project - Negative Findings

historically significant in the architectural, engineering, scientific, economic, agricultural, educational, social, political, military, or cultural annals of California” (Division I, Public Resources Code, Section 5021.1(b)).

Lead agencies have a responsibility to evaluate historical resources against the California Register criteria prior to making a finding as to a proposed project’s impacts to historical resources. Mitigation of adverse impacts is required if the proposed project will cause substantial adverse change. Substantial adverse change includes demolition, destruction, relocation, or alteration such that the significance of an historical resource would be impaired. While demolition and destruction are fairly obvious significant impacts, it is more difficult to assess when change, alteration, or relocation crosses the threshold of substantial adverse change. The CEQA Guidelines provide that a project that demolishes or alters those physical characteristics of an historical resource that convey its historical significance (i.e., its character-defining features) can be considered to materially impair the resource’s significance.

The California Register is used in the consideration of historic resources relative to significance for purposes of CEQA. The California Register includes resources listed in, or formally determined eligible for some California State Landmarks and Points of Historical Interest. Properties of local significance that have been designated under a local preservation ordinance (local landmarks or landmark districts), or that have been identified in a local historical resources inventory may be eligible for listing in the California Register and are presumed to be significant resources for purposes of CEQA unless a preponderance of evidence indicates otherwise.

Generally, a resource shall be considered by the lead agency to be “historically significant” if the resource meets the criteria for listing on the California Register of Historical Resources (Pub. Res. Code SS5024.1, Title 14 CCR, Section 4852) consisting of the following:

1. It is associated with events that have made a significant contribution to the broad patterns of local or regional history, or the cultural heritage of California or the United States; or 2. It is associated with the lives of persons important to local, California, or national history; or 3. It embodies the distinctive characteristics of a type, period, region, or method of construction, or represents the work of a master, or possesses high artistic values; or 4. It has yielded, or has the potential to yield, information important to the prehistory or history of the local area, California, or the nation.

8690 2 February, 2015 Subject: Phase I Cultural Resources Inventory Conducted for the San Juan Creek Outfall Project - Negative Findings

SCIC RECORDS SEARCH

A records search of the APE and the surrounding one-mile was completed by SCCIC staff on January 20, 2015. This search included their collection of mapped prehistoric, historical and built-environment resources, Department of Parks and Recreation (DPR) Site Records, technical reports, archival resources, and ethnographic references. Additional consulted sources included the National Register of Historic Places (NRHP), California Inventory of Historical Resources/CRHR and listed OHP Archaeological Determinations of Eligibility, California Points of Historical Interest, California Historical Landmarks, and Caltrans Bridge Survey information.

Previously Conducted Studies:

SCCIC records indicate that sixty-five (65) previous cultural resources technical investigations have been conducted within a one-mile of the proposed project. No studies on file at the SCCIC have directly included the current APE, however two have included adjacent areas (Table 1).

Table 1. Studies that have included project area Author Year Company Title

Solis, Laurie Archaeological Monitoring of Doheny State Beach. 2009 URS and Orsi, Nate Report on file at the SCCIC, CSU Fullerton.

Pierson, Larry, California Outer Continental Shelf, Archaeological Shiner, Gerald, 1987 PS Associates Resource Study: Morro Bay to Mexican Border, and Slater, Final Report. Richard

The most pertinent of these studies was prepared as a summary of a cultural monitoring program that was implemented along Doheny State Beach, immediately west of San Juan Creek (Solis, Laurie and Orsi, Nate 2009; OR-03832). The negative results of this previous study further support the low potential for the current work to encounter unanticipated cultural material within the loose beach sands that surround the junction structure. An additional previous study (OR- 04082) was conducted just off-shore, along the continental shelf. No submerged cultural resources were recorded near the project area during this 1987 underwater archaeological investigation.

8690 3 February, 2015 Subject: Phase I Cultural Resources Inventory Conducted for the San Juan Creek Outfall Project - Negative Findings

Previously Identified Cultural Resources:

No cultural resources have been previously identified within the APE, however twenty (20) sites, built-environment resources, and historic addresses have been recorded within the surrounding one-mile records search area (Confidential Appendix A). The nearest site (CA-ORA-188) is located along the bluff top, approximately 1,800 feet from the project. Records indicate that, prior to its destruction, this site consisted of a large prehistoric village site with well-developed shell midden and anthropogenic deposits. The SCCIC records search provided copies of one historic map. This 1941 ACOE 1:62,500 San Juan Capistrano Quadrangle includes no symbolization of structures or features within the APE.

NAHC SACRED LANDS FILE SEARCH

Dudek requested a NAHC search of their Sacred Lands File on January 13, 2015 for the proposed project area. The NAHC provided results ten days later. This search did not indicate the presence of Native American traditional cultural place(s) within this area, or the surrounding one-mile buffer (Confidential Appendix B). The NAHC additionally provided a list of Native American tribes and individuals/organizations that might have knowledge of cultural resources in or near the project area.

TRIBAL REPRESENTATIVE CORRESPONDENCE

Following the NAHC response, letters were sent to the listed tribal representatives with the intent of requesting information, opinions or concerns relating to the proposed project impacts (Confidential Appendix B). These letters contained a brief description of the planned project, reference maps, and a summary of the NAHC SLF search results. No responses to these outreach attempts have been received to date. The lead agency will be provided with any responses should they be received from tribal representatives.

METHODS

Intensive Pedestrian Survey

An intensive pedestrian survey was conducted by Dudek archaeologist Adam Giacinto on January 12, 2015 using standard archaeological procedures and techniques. No cultural or built- environment artifacts or features were identified within the APE.

All field practices met Secretary of Interior and OHP standards of practice and guidelines for cultural resources inventory. The APE and surrounding area was walked using parallel transects spaced no more than 5-meters apart. No restrictions to the visibility of the ground

8690 4 February, 2015 Subject: Phase I Cultural Resources Inventory Conducted for the San Juan Creek Outfall Project - Negative Findings

surface were present. The entirety of the APE consists of loose beach sand that is subject to periodic redeposition by wave action and aeolian processes. The junction structure has been completely buried by beach sands. Subsurface exposures were opportunistically sought along the southeastern bank of the Jan Juan Creek, northwest of the APE. No subsurface sediments suitable for supporting developed cultural deposits were observed.

SUMMARY AND MANAGEMENT CONSIDERATIONS

Dudek’s Phase I cultural resources inventory of the project area suggests that there is no potential for the inadvertent discovery of intact cultural deposits during earth moving activities. The SCCIC records search, NAHC Sacred Lands File search, tribal correspondence, and intensive pedestrian survey did not indicate that cultural resources are within, or immediately surrounding the APE. All ground disturbances will be conducted within beach sands that have been deposited subsequent to the initial installation of the junction structure. For these reasons, it is recommended that no additional cultural mitigation is required to support Project activities.

In the unlikely event that subsurface cultural resources are encountered during earth-moving activities, work in the immediate vicinity shall be stopped and SOCWA contacted. A qualified archaeologist must be retained, as defined by CEQA, to evaluate the archaeological discovery for its eligibility for Local and State listing. The discovery or disturbance of any identified cultural resource shall be reported as appropriate to the SOCWA and the Native American Heritage Commission. In the event that Native American human remains or related cultural material are encountered, Section 15064.5(e) of CEQA defines the appropriate procedures, to be initiated with the requirement that work to be stopped and the County Coroner notified.

Should you have any questions relating to this report and its findings please do not hesitate to contact me directly.

Respectfully Submitted,

______Adam Giacinto, MA, R.P.A. Archaeologist DUDEK Office: (760) 479- 4252 Email: [email protected]

cc: Shawn Shamlou, Dudek Micah Hale, Dudek

8690 5 February, 2015 Subject: Phase I Cultural Resources Inventory Conducted for the San Juan Creek Outfall Project - Negative Findings

Att: Figure 1. Regional Map Figure 2. Vicinity Map Figure 3. Cultural Area of Potential Effects Map Appendix A: SCCIC Records Search Information Appendix B: NAHC Search Results and Tribal Correspondence

8690 6 February, 2015 y West Rosemead Park Monterey Covina 10 PomonaMontclair Hacienda Ontario Bloomington Park Walnut Montebello Heights 60 83 Pico Industry Glen Rivera Diamond Chino Avon Rowland Chino Mira Rubidoux La Habra Bar 142 Whittier Heights Hills 71 LomaPedley HeightsLos Angeles County DowneySanta Fe South La Orange County 19 SpringsWhittierHabra Brea Norco Norwalk 90 La MiradaFullerton Bellflower Placentia 91 Yorba LindaRiverside County Cerritos Buena Corona Park Orange County Lakewood Anaheim 15 Cypress 55 39 57 Los Orange Alamitos Garden Seal 22 Grove Tustin Foothills Beach Westminster Santa Ana HuntingtonFountain Tustin Beach Valley 241 Costa 405 Irvine Mesa El Toro Rancho 1 Santa Margarita Newport 133 Laguna Mission Coto De Beach 73 Hills Aliso Viejo Caza 74 Viejo 5 Trabuco Laguna Highlands Beach Laguna NiguelSan Juan Capistrano Dana Orange Point San County Pacific Clemente San Diego County Ocean Project Site

015 0 Miles Copyright:' 2014 Esri Cam P d FIGURE 1 Regional Map 8690 SOCW SJCOO Junction Structure Rehab Project Z:\Projects\j869001\MAPDOC\DOCUMENT\Figure1_Regional.mxd

DANA POINT

Project Site

Area of Potential Effect 0 1,000 2,000 USGS Quadrangle I Feet

SOURCE: USGS 7.5-Minute Series - Dana Point Quadrangle. FIGURE 2 Vicinity Map 8690 SOCWA SJ Creek Outfall Project Dana Point USGS Quad; Unsectioned, Inferred PLSS area T 8S, R 8W; Section 23 Z:\Projects\j869001\MAPDOC\DOCUMENT\Figure2_Vicinity.mxd

Area of Potential Effects

Existing Junction Structure

Staging Area 0 100 200 I Feet Site Entrance/Access

SOURCE: Bing Maps, 2015. Black & Veatch, 2015. FIGURE 3 Cultural APE Map 8690 SOCWA SJCOO Junction Structure Rehab Project Z:\Projects\j869001\MAPDOC\DOCUMENT\BiologicalResources.mxd

Appendix A (Confidential) SCCIC Records Search Results

8690 Appendix February, 2015

Appendix B (Confidential) NAHC Sacred Lands File Search and Tribal Correspondence

8690 Appendix February, 2015 Initial Study and San Juan Creek Ocean Outfall Junction Structure Mitigated Negative Declaration Rehabilitation Project

APPENDIX E: Noise Assessment for the San Juan Creek Junction Structure Rehabilitation (Landrum & Brown, 2015)

LANDRUM & BROWN

Memorandum

Date: June 16 2015 To: Brian Peck, Janie Chen, SOCWA From: Mike Holritz, INCE

Subject: Noise Assessment for the San Juan Creek Junction Structure Rehabilitation, Dana Point (Project #564501- 0100)

This memo presents the findings of our construction noise assessment for the San Juan Creek Junction Structure Rehabilitation project in Dana Point, California. The project needs to meet the City of Dana Point Noise Ordinance limits. (The Doheny State Park General Plan does not have any specific noise standards that would apply to the project). There are no interior areas near the work area, so only the exterior noise limits need to be addressed.

Section 11.10.010 of the City of Dana Point Noise Ordinance contains the noise level limits applicable to the project. Table 1 presents the City’s Exterior Noise Ordinance standards.

The exterior noise criteria are given in terms of L% noise levels. The noise levels specified are those that are not to be exceeded at a nearby receptor. Greater noise levels are permitted during the day (7 a.m. to 10 p.m.) as compared to the nighttime period (10 p.m. to 7 a.m.).

There is no impact-noise generating equipment planned for use at the construction site. Therefore, for this project, the most stringent noise standard is the 50 dBA L50 requirement.

Since some of the construction will take place during the nighttime period, the mitigation measures specified will be based on compliance with the more stringent nighttime Noise Ordinance limit of 50 dBA L50.

Noise measurements were performed near Campsite #45 to determine the ambient noise levels. The measurement location is shown on Exhibit 1. The measurements were performed between 2:15 a.m. and 3:15 a.m. on May 3, 2015.

19700 FAIRCHILD ROAD, SUITE 230, IRVINE, CA 92612 PHONE: 949•349•0671 San Juan Creek Outfall

Landrum & Brown Project #564501-0100 ______

Table 1 CITY OF DANA POINT EXTERIOR NOISE ORDINANCE STANDARDS ______

Noise Level Not To Be Exceeded Time Noise 7 a.m. to 10 p.m. 10 p.m. to 7 a.m. Period Metric (Daytime) (Nighttime) ______

30 Minutes/Hour L50 55 dBA 50 dBA 15 Minutes/Hour L25 60 dBA 55 dBA 5 Minutes/Hour L8.3 65 dBA 60 dBA 1 Minute/Hour L1.7 70 dBA 65 dBA No period of time Lmax 70 dBA 65 dBA ______

The major contributors to the noise environment were the ocean surf as well as a passing train and train horn. The Leq for the measurement period was 49.9 dBA. Since this is less than the City’s Noise Ordinance limit of 50 dBA L50, no adjustment to the ordinance limits are warranted.

A temporary noise barrier 10 feet high is planned at the north and east boundaries of the work area. The junction structure work area, the planned temporary noise barrier, and the nearest receptor location are shown in Exhibit 1. As part of the construction process, a large number of campsites near the work area will be reserved and not available for public use. These reserved campsites are also shown on the exhibit. The nearest exterior receptor that could be impacted by the construction noise would be at Campsite #45. This campsite is located approximately 215 feet from the junction structure where the construction noise will be taking place.

Predicted noise levels at this location for the equipment planned for use at the site were obtained from the Roadway Construction Noise Model (RCNM Version 1.1) developed by the Federal Highway Administration (FHWA). The program predicts construction noise levels for a variety of construction operations based on a compilation of empirical data and the application of acoustical propagation formulas. The computer model includes a usage factor for each type of equipment, and gives predicted noise levels for each item in terms of Leq. These noise levels were summed to determine the total Leq noise levels expected to impact park users at Campsite #45.

Leq is the sound level corresponding to a steady-state sound level containing the same total energy as a time-varying signal over a given sample period. Leq is the “energy” average noise level during the time period of the sample.

San Juan Creek Outfall

Landrum & Brown Project #564501-0100 ______

San Juan Creek Outfall

Landrum & Brown Project #564501-0100 ______

Leq can be measured for any time period, but is typically measured for 1 hour. It is the energy average of all the events and background noise levels that occur during that time period.

The project consists of construction work to be carried out in two phases. Phase 1 consists of work being performed for approximately 12 days over a four-week period. Phase 2 consists of work being performed for approximately 14 days over a six-week period.

The major pieces of equipment planned for use at the site include the following:

• A 250 hp. diesel bulldozer • A 75-ton, 150 hp. diesel rough terrain crane • A 150 hp. diesel wheel-loader with backhoe • A dive team van and flatbed trailer with generators and air compressors • An equipment delivery truck trailer • A mechanics truck with jib crane • Portable electric generators and construction lighting • 250 hp. diesel concrete/industrial saws • A 150 hp. gas-driven welding rig • A 150 hp. gas–driven compressor

The combination of equipment being used varies from week to week. The construction schedule was used to determine which pieces of construction equipment would be operating at which time. With the planned 10-foot high temporary barrier, calculations have shown that during several of the construction periods, the noise levels are projected to be about 53.7 dBA, and would exceed the City’s Nighttime L50 Noise Ordinance limit of 50 dBA.

Calculations have shown that by extending the temporary barrier height to 15 feet, the maximum L50 noise level at the nearest location for the loudest phase of work is projected to be about 48.7 dBA. This meets the City’s Noise Ordinance limit of 50 dBA L50. All other receptors are expected to experience noise levels well below the City’s Noise Ordinance limits.

The temporary noise barrier should provide a noise reduction rating of at least STC-25, and should be designed with a minimum of openings or gaps. The temporary noise barrier should be inspected at regular intervals to ensure it is in good condition.