Village Drive Culvert Replacement Addendum #1 Issued: June 14, 2018
To: All Planholders of Record
This Addendum modifies the bid documents as noted below. Acknowledge receipt of the Addendum on the Bid Form. Failure to do so may subject the bidder to disqualification.
A. See attached mandatory pre-bid meeting sign-in sheet, agenda and minutes including questions asked during the meeting and official responses/clarification to those questions.
B. The following is a list of questions and responses that were received during the Addendum period:
1. No additional questions were submitted during the Addendum period
C. Additional Clarifications to Bid Documents:
1. Removal of the existing 60-inch corrugated metal pipe includes removal of any existing concrete surrounding the culvert. In 2016 the City hired a contractor to pump concrete into the deteriorated invert of the existing pipe. The contractor estimates approximately 8-10 yards of concrete was pumped into the invert of the existing culvert to fill in voids in the corroded metal. In addition, there could be remnants of existing headwalls that are buried on the up and down stream ends of the existing culvert. While this has not been verified for a fact there was evidence of formed concrete mass when potholing was completed on the upstream side of the culvert. If headwalls are found it is assumed that those will be within the excavation limits for the new box culvert so the digging extents should not be increased, however, additional effort may be required to remove and dispose of those structures.
All costs associated with removal and disposal of the existing 60-inch culvert (including any existing concrete and buried headwalls) shall be included in the linear foot cost under Bid Item No.10. The description of this bid item has also been revised as part of this addendum – see attached revised Bid Schedule.
2. The project manager made an incorrect statement during the mandatory pre-bid meeting and this addendum shall correct that statement. Section 5.0 of the Special Provisions as written stipulates that the Contractor must work in sequential working days (except holidays) to complete the work in a continuous fashion. The work is estimated to take 60 calendar days to complete. The anticipated construction window for this project is July 27, 2018 (once under contract and a notice-to-proceed has been issued) to November 1, 2018 for culvert installation and roadway paving completion, and November 21, 2018 for
137 10th Street, P.O. Box 775088, Steamboat Springs, Colorado 80477-5088 (970) 879-2060 ● Fax (970) 879-8851 ● www.steamboatsprings.net
Page 1 of 3 the rest of the project to be substantially completed. For bidding purposes the Contractors shall assume that the liquidated damages will be based on a 60 calendar day project. This duration will be confirmed following the bid with the winning contractor.
3. Additional technical specifications have been included in the Standard Specifications for this project that are not applicable to the work associated with this project. Please disregard those sections that are not relevant to this project. These sections will be removed from the contract documents to avoid any confusion.
4. Wetland Permitting Update: The wetlands permit has been secured from the Army Corps of Engineers. See attached copy of the City’s Pre-Construction Notification (PCN) report prepared by Western Bionomics, Inc. dated April 3, 2018 and the Army Corps of Engineer’s Nationwide Permit authorization letter dated May 24, 2018. The Contractor will be required to adhere to all requirements of this permit.
5. The Tabulation of Length & Design Data shown on the cover sheet of the plan set is hereby revised with the following station information:
Begin Project: STA. 100 + 00 End Project: STA. 100 + 50.43
6. There are two known existing gas mains crossing the existing/new culvert on the upstream (eastern) side but only one (1) of those mains is suspected to require relocation. See Section 18.0 of the Special Provisions for more information regarding the one gas main that is suspected to require relocation.
7. The City has been notified that there is a Resort Internet fiber optic cable running above the Centurylink concrete duct bank as shown on sheet 8 in the plans. These fiber optic cables, and the other utilities in this immediate area at the downstream end, are not believed to require any relocation. See Section 18.0 of the Special Provisions for more information regarding utility relocations.
8. The City has hired Layne INLINER to line an existing culvert crossing under Village Drive at Medicine Springs Drive. This is another project in the immediate vicinity that was not explicitly included in Section 9.0 of the Special Provisions. The work is tentatively scheduled for August or September 2018 and that work is not believed to require a roadway closure at that location, however, the Contractor is hereby put on notice coordination with this adjacent project may be required. If the road does need to be closed at Medicine Springs Dr. by Layne INLINER and the Village Drive at Burgess Creek construction contractor is using Medicine Springs Drive as their detour route around the road closure then they may need to modify their traffic controls during this time. The City’s project manager for both of these projects is Danny Paul.
9. A preliminary construction schedule identifying start/end dates, major construction work tasks and associated milestones, identification of start and end points, and project completion shall be submitted with the Contractor’s bid.
137 10th Street, P.O. Box 775088, Steamboat Springs, Colorado 80477-5088 (970) 879-2060 ● Fax (970) 879-8851 ● www.steamboatsprings.net
Page 2 of 3 D. Revisions to Bid Schedule Items:
1. Bid Item No. 10 – REMOVAL OF PIPE (INCLUDES REMOVAL OF ANY EXISTING CONCRETE INCLUDING ANY EXISTING BURIED HEADWALLS): The description of this bid item has been revised to explicitly state the per linear foot cost shall include removal of any existing concrete that is found surrounding the existing 60-inch corrugated metal pipe.
2. Bid Item No. 2 – CONSTRUCTION SURVEYING (INCLUDES PROTECTING AND/OR RESETTING CORNER MONUMENT AT VILLAGE CENTER): The description of this bid item has been revised to include protecting in place and/or resetting the southwest property corner monument for the Steamboat Village Center property.
3. Bid Item No. 18 – UNCLASSIFIED EXCAVATION (INCLUDES CLEANING UPSTREAM CULVERT INVERT): The description of this bid item has been revised to explicitly include a requirement that in the process of excavating the area between the existing Village Center 60-inch culvert and the proposed box culvert, the contractor shall also clean the invert (outlet end) of the existing culvert extending from Village Center. Care shall be taken to not damage the existing culvert that is to remain. Jetting and hand work may be required. The cost of this additional work shall be included in this bid item.
137 10th Street, P.O. Box 775088, Steamboat Springs, Colorado 80477-5088 (970) 879-2060 ● Fax (970) 879-8851 ● www.steamboatsprings.net
Page 3 of 3 Village Drive Culvert Replacement Mandatory Pre-Bid Conference Wednesday, June 6, 2018 10:00 AM – 11:00 AM Crawford Room
*Red denotes minutes/additional clarification made during the pre-bid meeting. The questions and official responses from the meeting can be found at the end of this document.
Attendance Sign-in Sheet:
Attendance by the General Contractor or their representative at this meeting is mandatory to be eligible to submit a bid. If you are a sub-contractor in attendance on behalf of a General Contractor you must declare on the sign-in sheet who you are representing.
Agenda & Minutes (See Questions & Responses at End):
1. Project Team: a. City of Steamboat Springs: Danny Paul b. Project Engineer: Drexel, Barrel & Co. – Paul Moreau (not at meeting) c. Construction Management: City of Steamboat Springs Engineering Dept. d. Contractor: TBD
2. Project Overview
3. Project Goals: a. Safety – construction workers and public b. Quality work c. Come in on budget and on schedule d. Minimize impact to businesses and roadway users e. Contractor success
4. Plans: a. Drexel, Barrell & Co. Bid Set Drawings b. Western Bionomics: Wetland permitting
5. Specifications: a. Project Special Provisions – read and understand them as these will be strictly enforced b. City of Steamboat Springs Standard Specifications – Updated March 2018 c. Mt. Werner Water Standard Specifications for Water and Wastewater Utilities d. Project specific technical specs Some sections were included in the bid documents that are not applicable for this project (Sections 02721, 02970, 04410, 26 05 19, 26 05 33, 328005, 329000, 329113, 329223). These sections will be removed from the contract documents following the bid.
6. Construction Sequencing and Schedule: a. Contractor must provide preliminary schedule with bid (see Special Provisions) b. Base Bid: Begin upon executed contract and NTP and allowed until November 1, 2018 to complete work within roadway and pavement; allowed until November 21, 2018 to complete remaining work
7. Bid Structure & Award: a. Bid Schedule – any questions? No specific questions were asked about the bid schedule during this meeting b. Award based on Base Bid – Items 1-37 c. Liquidated Damages to be included in contract - roadway paving must be complete by Nov 1 and full project by Nov 21
8. Add-Alternates a. Inlet and pipe into box culvert – not part of Award
9. Adjacent Property Owners: a. The Lodge b. Highmark c. Wild Plum Grocer d. Village Center property + businesses
10. Easements – All work will occur within City right-of-way or existing public easements – see Special Provisions
11. Permits: a. Wetlands – by City; This has been obtained and copy of permit will be included in addendum b. CDPHE Dewatering
12. Traffic, Bike & Pedestrian Control a. Village Drive closure – detour route & VMS rental (2 month) b. Emergency access c. Transit stops d. Bicycle and pedestrian access e. Mt. Werner Water access to pump station f. Surrounding property access – Wild Plum deliveries
13. Construction Site Management a. Potential staging areas b. CDPHE Construction Stormwater Permit – not required c. Erosion control & Construction Site Mgmt plan – by contractor The plans do not include an initial erosion control plan (BMP’s) for bidding purposes. The Contractor is encouraged to develop a plan sufficient to comply with City regulations and in accordance with their means and methods and are asked to submit a lump sum price for this work as part of the bid.
14. Utility Locates, Potholing and Utility Provider Coordination a. Design phase potholing and results b. City in contact with all known impacted utility providers (Resort Internet, YVEA, MWW, Centurylink, Atmos) – Discuss known issues c. Verify depths of existing water main (downstream side) + dry utilities (Centurylink duct bank and deep Atmos gas line upstream side) d. Locate first, Engineer approve, pothole (City prefer potholing once road closure in place)
15. Safety Critical Work – No specific requirements but Contractor’s attention is called to this work a. Picking and setting the pre-cast box culvert sections
16. Dewatering a. Discuss Permitting – no groundwater sample collected but no remediation will be required (no known LUSTs in regulated proximity) b. Dewatering to Sanitary Sewer – not allowed c. Dewatering to environment – Permit, BMP’s, pay item (includes haul-off if contractor cannot manage on-site)
17. Soils testing is by Contractor for this project and needs to be completed for subgrade preparation and compaction requirements according the project specifications. Include engineer for any proof rolling testing prior to placement of any aggregate and pavement. Lab testing by an independent testing facility is required for fill materials and road aggregate. Soils Testing Results delivered to engineer in a Timely Manner
18. Construction Surveying & Staking
19. Water & Sewer work – none anticipated
20. Coordination with Adjacent Projects – See Section 9.0 in Special Provisions a. Mt. Werner & Ski Time roundabout b. Iconic Entry moving day c. Culvert slipline at Medicine Springs & Village Dr.
21. Weekly Construction Meeting – See Section 11.0 in Special Provisions
22. Community Relations: a. See pertinent Special Provision sections b. Very important aspect of the project and will be taken seriously c. Bi-weekly Public Information Program meeting – see Special Provisions - Contractor to designate a Public Information Program agent It was noted that these meetings may be limited to a total of three meetings during the project. d. Special Events
23. Site Visit? The Contractors opted not to have a group site visit
24. Bid Opening: 1:00 PM on Thursday, June 21, 2018
25. Addendum forthcoming: a. Questions regarding the scope of work and specifications must be submitted in writing to Shelly St. Pierre, [email protected] no later than 5:00 pm, June 11, 2018. b. Responses to all questions shall be issued in the form of an addendum to be issued no later than 5:00 PM, June 15, 2018.
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Questions & Responses from the Meeting:
The following questions were asked during the mandatory pre-bid conference but not in this particular order. Below each question is a formal response:
1. When does the City anticipate a contract can be executed and notice-to-proceed issued for this project?
The City estimates that a contract can be executed and notice-to-proceed issued by no sooner than July 27, 2018, contingent on available budget.
2. Are the liquidated damage values clarified in the bid documents?
No. The liquidated damage value will be determined in accordance with Section 108.09 of the CDOT Standard Specifications for Road and Bridge Construction latest edition prior to entering into contract. The Contractors are encouraged to estimate the value in accordance with their bid cost.
3. Does the Army Corps Nationwide permit cover wetlands on the upstream (east) side of the project?
Yes it does. The Pre-Construction Notification (PCN) report and a copy of the Nationwide permit have been included in the addendum.
4. Will the Contractor be allowed to excavate upstream of the streambank to install a bypass pump set-up? Could you please clarify the area where the Contractor is allowed to stage pumping equipment for the bypass set-up?
All temporary construction disturbance and spatial needs shall be accomplished entirely within the City right-of-way and public easement areas as shown on sheet 6 of the plan set – Existing Conditions, Ownership Map, and Demolition Plan.
5. How tight is the area between the downstream construction limits and right-of- way?
The fill boulders required at the edge of the downstream end of construction abut up to the right-of-way/property line. The Contractor may seek permission from the adjacent property owner should they require additional room to complete this work, however, the City believes there to be sufficient room to contain all work within the City right-of-way at the downstream end.
6. Where will the City allow the road closure to start/end?
The below depiction shows the area along Village Drive that the Contractor will be allowed to close to vehicular traffic for construction.
7. Can all pedestrian traffic be detoured around the work zone using the existing bridge on the downstream side of the work area?
The Contractor will be required to submit a Traffic, Pedestrian & Bicycle Control plan showing how they intend to detour pedestrians around the sidewalk closure areas.
8. With the Lodge property having two access points onto Village Drive, will the City allow the Contractor to close off the access closest to the work area to allow for additional staging area?
See response to question #4. For bidding purposes the Contractor shall assume that they will not be allowed to close the northern access point to the Lodge property.
9. Section 7.0 states that at all times and especially when construction ends each day the Contractor must provide an emergency route thru the work zone closure to allow for fire protection and emergency response to the affected area. How is this practical if the road is closed with a big excavation across it?
The intent of this statement is the Contractor shall ensure emergency access can be provided to all surrounding property. If the Contractor chooses to close Village Drive they shall communicate this closure to Dispatch so that emergency routes can be planned accordingly.
10. The Special Provisions state that the Contractors must accommodate truck deliveries to the Wild Plum grocer and also provide enough room for them to turn around within Village Drive if the road is closed. During the meeting it was stated that there is not enough room on the Highmark property for large sized delivery trucks to turn around. Could you please clarify what the expectation is for accommodating the delivery truck to Wild Plum?
If the City bus stop in front of the Wild Plum grocer is closed (as a result of the road closure) then the Contractor will be allowed to coordinate with Wild Plum to make the bus stop area available for delivery trucks to stage while they make their delivery. Use of the Village Center parking lot and pull-through driveway is discouraged unless the contractor is able to obtain permission from that property owner to allow for this. The City believes there to be sufficient room for these delivery trucks to turn around in Village Drive utilizing the bus stop area and Highmark driveway and parking lot.
11. When it comes to the Centurylink duct bank and potential temporary support bracing, is all shoring/temporary shoring and relocation the responsibility of the utility provider?
See Section 18.0 of the Special Provisions for the anticipated utility coordination needs for this project. Centurylink has been made aware of the project and if temporary shoring/support is required they will need a minimum of 30 days’ notice to mobilize their sub-contractor to perform this work.
12. Please clarify what is specified for backfill material between bottom of aggregate and top of box and will the City allow proof roll following placement of aggregates (as opposed to native material)?
The plan sheets reference CDOT M&S Standards for box culvert construction. Sheets M-206-1 and M-603-3 provide specifications for backfill material above the box culvert structure. The Contractor will be required to place 1-foot of Class 1 material immediately on top of the box culvert and approximately 30-inches of embankment material before building the roadway section. In accordance with the City Standard Specifications the Contractor shall be required to proof roll the top of embankment material (sub-grade) prior to placing Class 6 aggregate for roadway construction. The Class 6 base course material will also require a proof roll prior to paving.
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MANDATORY PRE-BID MEETING June 6, 2018 at 10:00 AM Held At: Crawford Room at Centennial Hall (followed by site visit if necessary)
Village Drive Culvert Replacement Bid Opening: June 21. 2018 at 1:00 PM
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(contractor to write unit price in words) GENERAL CONDITIONS/COMMON COSTS GENERAL CONDITIONS/MOBILIZATION/BONDING/PERMITS/ 1 LS 1 TEMPORARY FACILITIES CONSTRUCTION SURVEYING (INCLUDES PROTECTING AND/OR RESETTING 2 LS 1 CORNER MONUMENT AT VILLAGE CENTER) 3 TRAFFIC, PEDESTRIAN, AND BICYCLE CONTROL LS 1 4 MATERIALS TESTING LS 1 5 DUST CONTROL AND DAILY SITE CLEANUP LS 1 CONSTRUCTION SITE MANAGEMENT PLAN/TEMPORARY STORMWATER 6 LS 1 MANAGEMENT/DEWATERING ADMIN/CREEK BYPASS 7 VMS BOARD (2 MONTH RENTAL) EACH 1 8 POTHOLING HR 8 VILLAGE DRIVE CULVERT REPLACEMENT 9 CLEARING AND GRUBBING, STRIPPING OF TOPSOIL LS 1 REMOVAL & DISPOSAL OF PIPE (INCLUDES REMOVAL OF ANY EXISTING 10 CONCRETE INCLUDING ANY EXISTING BURIED HEADWALLS) LF 65 11 REMOVAL OF SIDEWALK SY 35 12 REMOVAL OF CURB AND GUTTER LF 51 13 REMOVAL OF ASPHALT MAT (ALL DEPTHS) SY 150 14 SAWING CONCRETE (ALL DEPTHS) LF 18 VILLAGE DRIVE BOX CULVERT REPLACEMENT BID SCHEDULE / Revised: June 14, 2018 Line Item ITEM UNIT QUANTITY PRICE AMOUNT No. An Excel spreadsheet provided as a convenience on the website under related documents. It is the contractors sole responsibility to ensure accuracy of spreadsheet, formulas are not included. Unit price written in words will prevail. (contractor to write unit price in words) 15 SAWING ASPHALT MATERIAL (ALL DEPTHS) LF 54 16 ADJUST MANHOLE EACH 1 17 ADJUST VALVE BOX EACH 1 UNCLASSIFIED EXCAVATION (INCLUDES CLEANING UPSTREAM CULVERT 18 INVERT) CY 312 19 STRUCTURE EXCAVATION CY 169 20 STRUCTURE BACKFILL (CLASS 1) CY 98 21 FILTER MATERIAL (CLASS A) CY 29 22 4" TOPSOIL & REVEGITATION CY 39 23 AGGREGATE BASE COURSE (CLASS 6) TON 86 24 HOT MIX ASPHALT (FULL DEPTH - 5" IN TWO LIFTS) TON 41 25 BOULDER WALL SF 152 26 RIPRAP (12 INCH) CY 102 27 STOCKPILE AND REUSE RIPRAP CY 14 28 CONCRETE CLASS D (BOX CULVERT) (CAST-IN-PLACE) CY 5 29 CONCRETE CLASS D (WALL) CY 40 30 STRUCTURAL CONCRETE COATING SY 71 31 REINFORCING STEEL LB 8180 VILLAGE DRIVE BOX CULVERT REPLACEMENT BID SCHEDULE / Revised: June 14, 2018 Line Item ITEM UNIT QUANTITY PRICE AMOUNT No. An Excel spreadsheet provided as a convenience on the website under related documents. It is the contractors sole responsibility to ensure accuracy of spreadsheet, formulas are not included. Unit price written in words will prevail. (contractor to write unit price in words) 32 10'x5' CONCRETE BOX CULVERT (PRECAST) LF 44 33 PEDESTRIAN RAIL LF 36 34 CONCRETE SIDEWALK (5 IN W/FIBER REINFORCE.) SY 41 35 CONCRETE CURB AND GUTTER (2-FOOT) LF 51 36 WATERBORNE PAVEMENT MARKING (SOLID WHITE)(4 INCH) W/GLASS BEADS GAL 1 WATERBORNE PAVEMENT MARKING (SOLID YELLOW)(4 INCH) W/GLASS 37 BEADS GAL 1 TOTAL BID ADD ALTERNATE 38 18 INCH CORRUGATED STEEL PIPE LF 7 39 INLET TYPE 16 (5 FOOT)(2 FOOT SUMP) EACH 1 31040 Willow Lane WESTERN BIONOMICS INC. Steamboat Springs, CO 80487 Natural Resource Management Services [email protected] Ph/Mobile 970-846-8223 April 3, 2018 Mr. Tyler Adams, Project Manager US Army Corps of Engineers, Grand Junction Field Office 400 Rood Ave., Room 224 Grand Junction, CO 81501 RE: City of Steamboat Springs, Village Drive Culvert Replacement – Pre-Construction Notification Dear Tyler: This Aquatic Resource Delineation Report has been prepared at the request of the City of Steamboat Springs to receive written verification that the mapping of aquatic resources herein is accurate and the proposed project is consistent with the regulations implementing the Clean Water Act’s Nationwide Permit Program. The landowner(s) and/or project proponent’s contact information is included in the list below: Landowner/Proponent: City of Steamboat Springs ATTN: Danny Paul, Public Works Engineer 137 10th Street, Steamboat Springs, CO 80487 [email protected] 970.871.8210 Primary Contact: Paul Moreau, Project Engineer Drexel Barrell & Co 1800 38th Street, Boulder, Colorado 80301 [email protected] 303.442.4338 The City of Steamboat Springs intends to replace a culvert that provides passage for Burgess Creek beneath Village drive in Steamboat Springs. Aquatic Resources were delineated on the parcel by Western Bionomics on October 10, 2016. Sincerely, Western Bionomics Inc. Kelly Colfer Principal Enclosure: City of Steamboat Springs, Village Drive Culvert Replacement – Pre-Construction Notification cc: Paul Moreau CITY OF STEAMBOAT SPRINGS VILLAGE DRIVE CULVERT REPLACEMENT PRE-CONSTRUCTION NOTIFICATION April 3, 2018 Prepared For Error! Reference source not found. and Western Colorado Regulatory Office 400 Rood Avenue, Room 142, Grand Junction, CO 81501-2563 Prepared By WESTERN BIONOMICS INC. Natural Resource Management Services 31040 Willow Lane • Steamboat Springs, CO 80487 Ph: 970-846-8223 • [email protected] City of Steamboat Springs, Village Drive Culvert Replacement – Pre-Construction Notification April 3, 2018 EXECUTIVE SUMMARY The existing Burgess Creek crossing under Village Drive is currently under sized and physically failing. The City intends to replace the existing culvert with a new, larger box culvert. To facilitate the City’s compliance with the Clean Water Act, aquatic resources were delineated in the project area. A total of 2742 square feet (0.06) acres of palustrine shrub wetlands and 75 linear feet of open water were delineated in the 0.67 acre Project Assessment Area. The project site is located within the 100 year floodplain. The project would impact 731 square feet of wetland. No mitigation is proposed since the impacts are less than 1/10 acre. Western Bionomics Inc. Natural Resource Management Services Page i City of Steamboat Springs, Village Drive Culvert Replacement – Pre-Construction Notification April 3, 2018 TABLE OF CONTENTS 1. INTRODUCTION ...... 1 2. LOCATION ...... 1 3. METHODS ...... 2 4. RESULTS ...... 2 4.1 LANDSCAPE SETTING ...... 3 4.2 AQUATIC RESOURCES ...... 3 4.2.1 Overview ...... 3 4.2.2 Physical Characteristics ...... 4 4.2.2.1 Soils ...... 4 4.2.2.2 Vegetation ...... 4 4.2.2.3 Hydrology ...... 4 4.2.3 Interstate or Foreign Commerce ...... 5 5. AQUATIC RESOURCE DELINEATION SUMMARY ...... 5 6. PROPOSED PROJECT ...... 5 6.1 PROJECT DESCRIPTION ...... 5 6.2 WETLAND IMPACTS ...... 5 6.3 MITIGATION ...... 6 7. REFERENCES ...... 7 APPENDIX A – AQUATIC RESOURCE DELINEATION MAP APPENDIX B – SUPPORTING MAPS APPENDIX C – PHOTOGRAPHS APPENDIX D – PLANT LIST APPENDIX E – NRCS SOIL REPORT APPENDIX F – FIELD DATA SHEETS Western Bionomics Inc. Natural Resource Management Services Page ii City of Steamboat Springs, Village Drive Culvert Replacement – Pre-Construction Notification April 3, 2018 ACRONYMS AND ABBREVIATIONS BMP Best Management Practice NRCS Natural Resource Conservation Service NWPL National Wetland Plant List OHWM Ordinary High Water Mark PEM Palustrine Emergent Wetland Vegetation PFO Palustrine Forested Wetland Vegetation PSS Palustrine Scrub-Shrub Wetland Vegetation COE US Army Corps of Engineers FWS US Fish and Wildlife Service UTM Universal Transverse Mercator coordinate system AA Water Resource Assessment Area Western Bionomics Inc. Natural Resource Management Services Page iii City of Steamboat Springs, Village Drive Culvert Replacement – Pre-Construction Notification April 3, 2018 1. INTRODUCTION The existing Burgess Creek crossing under Village Drive is currently under sized and physically failing. The City intends to replace the existing culvert with a new, larger box culvert. To facilitate the project’s compliance with the Clean Water Act, Western Bionomics has conducted an Aquatic Resource Delineation at the project location. The project proponent and primary contacts are listed below. Landowner/Proponent: City of Steamboat Springs ATTN: Danny Paul, Public Works Engineer 137 10th Street, Steamboat Springs, CO 80487 [email protected] 970.871.8210 Primary Contact: Paul Moreau, Project Engineer Drexel Barrell & Co 1800 38th Street, Boulder, Colorado 80301 [email protected] 303.442.4338 This document establishes the limits of federal jurisdiction with respect to Section 404 of the Clean Water Act. The following narrative presents the methods used to delineate aquatic resources, the results of our investigation, and a brief discussion and summary of our results. Representative drawings, field data sheets, and site photographs are included in the Appendices. 2. LOCATION The project assessment area is located in the City of Steamboat Springs, Routt County, Colorado (See Vicinity Map, Appendix B). The assessment area can be found on the USGS Steamboat Springs 7.5’ series topographic quadrangle, where it occupies 0.67± acre in T6N, R84W, Section 27, at 40.454690°, -106.805376° (WGS 84). Plant communities on the property include upland grassland and palustrine emergent wetland. The project assessment area has been defined to encompass all areas that could potentially be affected by the proposed project. The project area can be reached from the Routt County Courthouse by traveling east on US Highway 40 (Lincoln Avenue) for 1.6 miles to the Mount Werner Road exit. Turn left at the stop sign and continue on Mount Werner Road for 1.1 miles. At the traffic circle, continue straight onto Après Ski Way for 0.1 mile. Turn right onto Village Drive, the culvert crosses the road 170 feet after the turn. Western Bionomics Inc. Natural Resource Management Services Page 1 City of Steamboat Springs, Village Drive Culvert Replacement – Pre-Construction Notification April 3, 2018 3. METHODS Prior to preparation of this aquatic resource delineation report, pertinent background information was reviewed, individuals familiar with the project were interviewed, and maps, aerial photos, and soil map unit descriptions of the project area were obtained by Western Bionomics. Wetlands were delineated on the parcel by Western Bionomics on October 10, 2016. Sample plots were established near the edge of each change in plant community type in order to ascertain whether the site was a wetland or upland. Each sample plot was numbered and designated with orange flagging. Ecosystem parameters (vegetation, soils, and hydrology) were characterized and recorded on field data forms (Appendix A) at each observation point, as per Army Corps guidelines (US Army Corps of Engineers Wetland Delineation Manual, 1987; Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region, U.S. Army Corps of Engineers, 2010). The location of sample plots was mapped and is displayed on the drawing(s) located in Appendix A. Based on observations of all three wetland parameters at each sample plot, wetland boundaries were designated with fluorescent pink flagging. Boundary markers were individually numbered by Western Bionomics personnel and recorded by the surveyor to provide reference. The OHWM was mapped based on guidance included in RGL 05-05, Mersel and Lichvar (2014), and Lichvar and McColley (2008). A point to point survey of the delineated boundaries of each wetland and/or OHWM was conducted by Emerald Mountain Surveys, relative to the Colorado State Plane datum. The surveyed wetland boundaries were overlaid on a 2014 geo-referenced aerial photograph registered on the Colorado State Plane datum. The map is located in Appendix A. The characteristics of vegetation, soils, and hydrology within wetlands and uplands on the parcel are presented in Section 4 of this report. 4. RESULTS Wetland sample plots revealed the boundary between sites which exhibited all 3 wetland parameters and sites which were lacking one or more wetland parameters. Based on the presence or absence of parameters, wetland boundaries were designated. A total of 2742 square feet (0.06) acres of palustrine shrub wetlands and 75 linear feet of open water were delineated in the 0.67 acre Project Assessment Area. The following subsections present the results of the field examinations with respect to soil parameters, vegetation composition, and hydrological indicators. Sample plot data sheets are located in Appendix E. Western Bionomics Inc. Natural Resource Management Services Page 2 City of Steamboat Springs, Village Drive Culvert Replacement – Pre-Construction Notification April 3, 2018 No evidence of threatened or endangered animal or plant species was observed or has been documented anywhere within or adjacent to the proposed project area. 4.1 LANDSCAPE SETTING Total Acreage of Wetland Assessment Area: 0.67 acres Total Acreage of Wetland: 0.06 acre Topography: Flat Geologic Features: Western base of the Park Range Major Water Bodies: Yampa River Surface Water Flow: Towards the river Plant Community Types: PEM wetland, PSS wetland, urban landscape Existing Vegetation: Willows, sedges, rushes, grasses Current Land Use: Urban residential and commercial Major Recent or historical disturbances: Urban development, culverted stream Season During Site Visit: Fall Flood/Drought Conditions: No Irrigation Practices: None Modifications to the Site: Channelization upstream Atypical Characteristics: None Entire Assessment Area Field Verified? Yes 4.2 AQUATIC RESOURCES 4.2.1 Overview Aquatic resources mapped within the assessment area include 3 distinct polygons, each separated from the other by a culvert. The first is a channelized stream segment characterized by a constructed wall on river left that confines the channel and by a steep slope on river right that exhibited a natural line impressed on the bank, vegetation absence, scour, bed and bank, and changes in plant community. The Ordinary High Water Mark (OHWM) is defined by regulatory guidance provided in RGL 05-05, Mersel and Lichvar (2014), and Lichvar and McColley (2008). The next two polygons exhibit characteristics of wetlands as set forth in Environmental Laboratory (1987) and U.S. Army Corps of Engineers (2010). These wetlands are PSS wetlands dominated by dusky willow and PEM wetlands dominated by sedges, rushes, and grasses. Sites mapped as wetland exhibit the presence of all 3 wetland parameters (hydrophytic vegetation, hydric soil, and wetland hydrology). Wetland boundaries were delineated where one or more wetland parameters were not observed in wetland sample plots. Table 1, below, provides a summary of aquatic resources mapped on the parcel. Western Bionomics Inc. Natural Resource Management Services Page 3 City of Steamboat Springs, Village Drive Culvert Replacement – Pre-Construction Notification April 3, 2018 Table 1. AQUATIC RESOURCES WITHIN THE SURVEY AREA AQUATIC RESOURCES CLASSIFICATION AQUATIC RESOURCE AQUATIC RESOURCE AQUATIC RESOURCE NAME SIZE (SQFT/ACRE) SIZE (LINEAR FEET) COWARDIN LOCATION (LAT/LONG) Aquatic Resource “B” PSS 40.454690°, -106.805376° 473/0.01 N/A upstream of Village Drive Aquatic Resource “C” PEM 1876/0.04 PEM, PSS 40.454690°, -106.805376° N/A downstream of Village Drive PSS 393/0.01 Aquatic Resource “A” 40.454690°, -106.805376° 667/0.02 75 Riverine streambed The following sections provide details relative to physical characteristics present within the assessment area. 4.2.2 Physical Characteristics 4.2.2.1 Soils Soil survey information compiled by the Natural Resources Conservation Service (NRCS) identifies 1 mapping unit(s) within the limits of the project area – 50C, Lintin loam, 3-12% slopes. This soil is not included on the NRCS list of hydric soils. An NRCS Custom Soil Report, including the Soil Map, is included in Appendix E. 4.2.2.2 Vegetation Within the boundaries of the assessment area, hydrophytic vegetation was dominant within delineated wetlands. Reed canarygrass was dominant outside the wetland boundary, however hydric soils and wetland hydrology was absent where this hydrophytic grass is present outside of the wetland boundary. The dominant plant associations can be broadly characterized as follows: Uplands dominated by mixed grasses including timothy, smooth brome, orchardgrass, and western wheatgrass. PSS wetlands dominated by dusky willow and reed canarygrass. PEM wetlands dominated by cattail, reed canarygrass, spike rush, and/or bentgrass. A list of vegetation found in the assessment area and its wetland indicator status can be found in Appendix D. Vegetation on the assessment area is characteristic of that which is found on similar landscapes in the Yampa Valley. 4.2.2.3 Hydrology Waters of the United States that are found on the property are associated with Burgess Creek, tributary to the Yampa River. The 100 year floodplain at the location of the project area has been mapped by FEMA. The project area is located within the limits of the 100 year floodplain. Western Bionomics Inc. Natural Resource Management Services Page 4 City of Steamboat Springs, Village Drive Culvert Replacement – Pre-Construction Notification April 3, 2018 Saturation within the root zone, inundation of the sample site, presence of one primary or 2 or more secondary hydrological indicators was confirmed in all sample plots located in areas mapped as wetland. 4.2.3 Interstate or Foreign Commerce No interstate or foreign commerce was observed to be associated with aquatic resources found on the site, specifically recreation or other use by interstate or foreign travelers, sale of fish or shellfish in interstate or foreign commerce, or use by industries operating in interstate or foreign commerce, was observed or documented. 5. AQUATIC RESOURCE DELINEATION SUMMARY A total of 2742 square feet (0.06) acres of palustrine shrub wetlands and 75 linear feet of open water were delineated in the 0.67 acre Project Assessment Area. The 100 year floodplain at the location of the project area has been mapped by FEMA. The project area is located within the limits of the 100 year floodplain. 6. PROPOSED PROJECT 6.1 PROJECT DESCRIPTION The Village Drive culvert replacement project entails removing and replacing an existing 60” CMP with a new and larger 5 ft by 10 ft concrete box culvert. The culvert location is about 270 feet south of the Apres Ski Way intersection and conveys Burgess Creek. The existing Burgess Creek crossing under Village Drive is under sized and physically failing. The proposed improvements include minor grade and storm drainage changes. Existing sidewalk will be widened in order to improve pedestrian movement to and from the Mountain base area. Minor grading and riprap reinforcement is proposed at both ends of the box culvert. 6.2 WETLAND IMPACTS A total of 731 square feet of wetland would be impacted by the project (refer to Wetland Exhibit, Appendix B). Table 2 discloses the impacts by Cowardin classification. Impacts would result from site grading and placement of riprap at either end of the replaced culvert. Western Bionomics Inc. Natural Resource Management Services Page 5 City of Steamboat Springs, Village Drive Culvert Replacement – Pre-Construction Notification April 3, 2018 Table 2. AQUATIC RESOURCE IMPACTS Aquatic Aquatic Resource Impact Size Cubic Yards of Fill Resource Name Size (sqft/ac) (sqft) B (PSS) 473/0.01 473 0.11 C (PEM) 2269/0.05 258 2.49 Total 2742/0.06 731 2.60 Wetland impacts were avoided to the greatest extent practicable, given the purpose of the project and construction logistics. Riprap is intended to protect streambed and prevent erosion. 6.3 MITIGATION No mitigation is proposed as the impacts are less than 1/10 acre. Western Bionomics Inc. Natural Resource Management Services Page 6 City of Steamboat Springs, Village Drive Culvert Replacement – Pre-Construction Notification April 3, 2018 7. REFERENCES Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation Manual, Technical Report Y-87-1, U.S. Army Engineer Waterways Experiment Station, Vicksburg, Miss. Lichvar, R.W. and S.M. McColley. 2008. A Field Guide to the Identification of the Ordinary High Water Mark (OHWM) in the Arid West Region of the Western United States: A Delineation Manual. ERDC/CRREL TR-08-12. U.S. Army Engineer Research and Development Center, Cold Regions Research and Engineering Laboratory, Hanover, NH. Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016. The National Wetland Plant List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X. http://wetland-plants.usace.army.mil/nwpl_static/index.html Mersel, M.K. and R.W. Lichvar. 2014. A Guide to Ordinary High Water Mark (OHWM) Delineation for Non-Perennial Streams in the Western Mountains, Valleys, and Coast Region of the United States. ERDC/CRREL TR-14-13. U.S. Army Engineer Research and Development Center, Cold Regions Research and Engineering Laboratory, Hanover, NH. Riley, D.T. 2005. Regulatory Guidance Letter No. 05-05. Ordinary High Water Mark Identification. http://www.usace.army.mil/Missions/Civil-Works/Regulatory-Program-and- Permits/Guidance-Letters/. USDA Natural Resources Conservation Service. Soil Data Access Hydric Soils List. Available on the web at https://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcseprd1316620.html [accessed May 18, 2017]. U.S. Army Corps of Engineers. 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0), ed. J. S. Wakeley, R. W. Lichvar, and C. V. Noble. ERDC/EL TR-10-3. Vicksburg, MS: U.S. Army Engineer Research and Development Center. Western Bionomics Inc. Natural Resource Management Services Page 7 APPENDIX A – AQUATIC RESOURCE DELINEATION MAP Western Bionomics Inc. Natural Resource Management Services Page 8 20' 0 40' 1" = Horizontal Scale WETLAND (PSS) SAMPLE POINT SAMPLE OPEN WATER WETLAND (PEM) 100 YR FLOODPLAIN ASSESSMENT AREA WETLAND IDENTIFICATION REPLACEMENT A VILLAGE DRIVE CULVERT 1 CITY OF STEAMBOAT SPRINGS 40' AQUATIC RESOURCE DELINEATION BURGESS CREEK BURGESS 667 sqft A PARKING LOT 473 sqft B 1 2 VILLAGE DRIVE 4 3 2269 sqft C PARKING LOT CONCRETE PATHWAY APPENDIX B – SUPPORTING MAPS Western Bionomics Inc. Natural Resource Management Services Page 9 SEDGWICK LOGAN MOFFAT JACKSON LARIMER PHILLIPS WELD CITY OF ROUTTSTEAMBOATSPRINGS MORGAN GRAND BOULDER RIO BLANCO YUMA BROOMFIELD WASHINGTON GILPIN ADAMS DENVER GARFIELD EAGLE SUMMIT JEFFERSON ARAPAHOE DOUGLAS ELBERT KIT CARSON PITKIN LAKE PARK MESA LINCOLN ROUTT DELTA TELLER EL PASO CHEYENNE CHAFFEE COUNTY GUNNISON MONTROSE FREMONT KIOWA CROWLEY OURAY PUEBLO CUSTER SAN MIGUEL SAGUACHE BENT PROWERS OTERO DOLORES SAN JUAN 15 14 13 MINERAL18 17 HUERFANO 16 15 14 13 ALAMOSA MONTEZUMA LAS ANIMAS BACA LA PLATA COSTILLA ARCHULETA CONEJOS 22 23 24 19 20 21 22 23 24 040 A N L D E E R A OOT 4 6 F F R 0 A O D EE 0 OT LN 2 0 27 26 26 25 STEAMBOAT SPRINGS 25 27 CITY OF 30 29 28 9 STEAMBOAT 2 R SPRINGS 4 4 38 B 1 3 0 1 4 34 36 0 A 35 A 6I 8 35 0 36 3 3 34 31 32 33 40 RD S B A S A 1 P O L 3 A F 1 F 42 U B 5 E C I G I I D C R R E MOON LIGHT WY COPP R R E IDGE P P O C F C A L DR O T L H P L P O P M R E J DR I O R B A A C C R R N HIN O OAK CREEK HA 3 0 040A B 1 A I 4 D 0 2 0 W 2 0 G 3 4 O 0 0 1 E 6 D A 04 R 4 ABBEY RD D 5 4 0 RD A 040A HOP S S LN HI IS 8 E IR LD 3 DR 6 CURVE CT 33 CH I O E C F S T A UN M B L E N U N T I T S S C K H A W OOD R KS S D T H B Y 7 D 8 12 O O AM 10 C C S 9 10 KB B 6 11 11 T R S BOULE INTA 3 1 E VARD 12 3T ID DR TH A RK AV D T H G P E HW R ST CRAWFORD AV L R PA OGAN AV D T ER C T E T S MISSO L V URI AV S E RIT ANS YAMPA R C H T SPRUCE AV U S T C 17 T 1 T T T A L O S IN 1 S S HILL NI F 4 S S ST T E ILP H H 3 H R H G T T S ST C V T A T E I 9 8 7 10 M MAPLE ST A W T J SPRI MANITOU AV E S NG D I CREEK R V Y H FAIR A T SA G M 6 T T E P S U E R A S L W E H C O S D L T B I W O T Y R R R E U SE 4 H N 3 A LEXAND T P T Y Y D R S ER H R FIS T CHL I C UP RW G C A R L E I A E I P N K H I F E N AL D LS E R D 1 V H R 2 I I A 3 CI G C V L E H T L D 3 RDAN AN ST YAT 4 T 17 D HI 1 3 W R 16 1 A 18 L B EARL L P S 15 13 15 D I M 14 14 E 13 O D R I U D N C S I TA CT R T C I E L N G R E I R V L A I E D T K S A E I MBO T L V H R A BD I D M N D E R LN A I Y S A A D 20 P O S C D O O N W L EL R ASPE N P B E W ROOK O L T PAM L G PO HIL N H IN CI A T W N L G IE 7 I V X D F AT BD O 4 G O H CITY OF MB R N TEA O S L T C STEAMBOAT ANGLERS PROJECT IDGE RD SPRINGS R T BD A RD O EEK CR B H C S M N W Y R S N E A U A B R L D G R W E 22 21 N Y AND 20 S T E L 23 E E 24 S LOCATION U H 19 GH 22 I Q C 23 H 24 T E R C N DR A K E T N R P R V D RAL PA I DOW I N R S A T E E R O D R R M D G M TY S R I DR E T C E H AR R U R O ES SQ 29 S E V S WY I M E IE M K U C T O H E R I L A RD R K O L G US D S I 6 H 3 S W K E M I E LL T R R A I I T W L M I LN T C W R IN APRES S CA E K ERN R I D W ID S Y G R G N I E R E E A L P G S D MEDICINE R 27 C R 26 28 H E I L U 25 29 4 N 1 L A O L O N 27 30 K I 26 E C K 25 D A R L F Y V W A N S I O A W L SK P YV I C IE R W K D L N E S E I S SIER A N I 32 T C W H UNT H E LN A K ERS Y STON D O H C N D R R RE T D R K K PA TIMO T R T C H C A T Y S E D R R E B T UN *H 33 34 35 36 34 35 36 31 32 4 5 24 N D 14F L R ELK N EE R R 0 DEE LN 4 G 0 Y A TR N U 5 O C 3 2 1 6 5 4 3 2 1 43 4 3 1B 4 3 1 1 W LN O I L L W 1 10 4 11 12 7 8 9 8 10 11 12 22 15 14 18 17 17 13 16 1 0 15 14 2 13 CITY OF STEAMBOAT SPRINGS VILLAGE DRIVE CULVERT VICINITY MAP REPLACEMENT Drexel, Barrell & Co. Engineers Surveyors 1800 38TH STREET BOULDER, COLORADO 80301 CONTACT: PAUL D. MOREAU, P.E. (303) 442-4338 REPLACEMENT VILLAGE DRIVE CULVERT ST01 H:\20873-02SSTR\Plans\Sheets\20873-02_ST01.dwg, 3/13/2018 2:04:56 PM Drexel, Barrell & Co. Engineers Surveyors 1800 38TH STREET BOULDER, COLORADO 80301 CONTACT: PAUL D. MOREAU, P.E. (303) 442-4338 REPLACEMENT VILLAGE DRIVE CULVERT GP01 H:\20873-02SSTR\Plans\Sheets\20873-02_GP01.dwg, 3/19/2018 4:36:29 PM APPENDIX C – PHOTOGRAPHS Western Bionomics Inc. Natural Resource Management Services Page 10 Photo 1. Aquatic Resource “A” Photo 2. Aquatic Resource “B” Photo 3. Aquatic Resource “C” Western Bionomics Inc. Natural Resource Management Services Page 11 APPENDIX D – PLANT LIST Western Bionomics Inc. Natural Resource Management Services Page 12 Table 2. List of Plants on the Property, including Western Mountains, Valleys, and Coast wetland indicator status A Wetland Indicator Accepted Status Scientific Name Common Name Symbol WMVC AW Region Region ACMI2 Achillea millefolium Common Yarrow FACU FACU AGST2 Agrostis stolonifera Spreading Bent FAC FACW ALIN2 Alnus incana Speckled Alder FACW FACW ALPR3 Alopecurus pratensis Field Meadow-Foxtail FAC FACW ANCO Anthemis cotula Stinking Chamomile FACU BRIN2 Bromus inermis Smooth Brome FAC FACU CAAQ Carex aquatilis Water Sedge OBL CANE2 Carex nebrascensis Nebraska Sedge OBL OBL CAUT Carex utriculata Northwest Territory Sedge OBL OBL CIAR4 Cirsium arvense Canadian Thistle FAC FACU DAGL Dactylis glomerata Orchard Grass FACU FACU ELPA3 Eleocharis palustris Common Spike-Rush OBL OBL JUAR2 Juncus arcticus Arctic Rush FACW FACW PASM Pascopyrum smithii Western-Wheat Grass FACU FAC PHAR3 Phalaris arundinacea Reed Canary Grass FACW FACW PHPR3 Phleum pratense Common Timothy FAC FACU POPR Poa pratensis Kentucky Blue Grass FAC FAC SAME2 Salix melanopsis Dusky Willow OBL OBL TAOF Taraxacum officinale Common Dandelion FACU FACW TYLA Typha latifolia Broad-Leaf Cat-Tail OBL FACU A Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin (2016) Western Bionomics Inc. Natural Resource Management Services Page 13 APPENDIX E – NRCS SOIL REPORT Western Bionomics Inc. Natural Resource Management Services Page 14 United States A product of the National Custom Soil Resource Department of Cooperative Soil Survey, Agriculture a joint effort of the United Report for States Department of Agriculture and other Routt Area, Colorado, Parts Federal agencies, State Natural agencies including the of Rio Blanco and Routt Resources Agricultural Experiment Conservation Stations, and local Counties Service participants Village Drive Culvert Replacement April 5, 2018 Preface Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http://www.nrcs.usda.gov/wps/ portal/nrcs/main/soils/health/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center (https://offices.sc.egov.usda.gov/locator/app?agency=nrcs) or your NRCS State Soil Scientist (http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/contactus/? cid=nrcs142p2_053951). Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Web Soil Survey, the site for official soil survey information. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require 2 alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and employer. 3 Contents Preface...... 2 How Soil Surveys Are Made...... 5 Soil Map...... 8 Soil Map (Village Drive Culvert Replacement)...... 9 Legend...... 10 Map Unit Legend (Village Drive Culvert Replacement)...... 12 Map Unit Descriptions (Village Drive Culvert Replacement)...... 12 Routt Area, Colorado, Parts of Rio Blanco and Routt Counties...... 14 50C—Lintim loam, 3 to 12 percent slopes - DRAFT...... 14 50F—Routt loam, 25 to 65 percent slopes, very stony - DRAFT...... 15 52A—Menbar loam, 0 to 3 percent slopes - DRAFT...... 17 133—Lintim loam, 3 to 25 percent slopes - DRAFT...... 18 References...... 20 4 How Soil Surveys Are Made Soil surveys are made to provide information about the soils and miscellaneous areas in a specific area. They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses. Soil scientists observed the steepness, length, and shape of the slopes; the general pattern of drainage; the kinds of crops and native plants; and the kinds of bedrock. They observed and described many soil profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock. The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity. Currently, soils are mapped according to the boundaries of major land resource areas (MLRAs). MLRAs are geographically associated land resource units that share common characteristics related to physiography, geology, climate, water resources, soils, biological resources, and land uses (USDA, 2006). Soil survey areas typically consist of parts of one or more MLRA. The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area. Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform. By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform, a soil scientist develops a concept, or model, of how they were formed. Thus, during mapping, this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape. Commonly, individual soils on the landscape merge into one another as their characteristics gradually change. To construct an accurate soil map, however, soil scientists must determine the boundaries between the soils. They can observe only a limited number of soil profiles. Nevertheless, these observations, supplemented by an understanding of the soil-vegetation-landscape relationship, are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries. Soil scientists recorded the characteristics of the soil profiles that they studied. They noted soil color, texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots, reaction, and other features that enable them to identify soils. After describing the soils in the survey area and determining their properties, the soil scientists assigned the soils to taxonomic classes (units). Taxonomic classes are concepts. Each taxonomic class has a set of soil characteristics with precisely defined limits. The classes are used as a basis for comparison to classify soils systematically. Soil taxonomy, the system of taxonomic classification used in the United States, is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile. After the soil 5 Custom Soil Resource Report scientists classified and named the soils in the survey area, they compared the individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research. The objective of soil mapping is not to delineate pure map unit components; the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements. Each map unit is defined by a unique combination of soil components and/or miscellaneous areas in predictable proportions. Some components may be highly contrasting to the other components of the map unit. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, onsite investigation is needed to define and locate the soils and miscellaneous areas. Soil scientists make many field observations in the process of producing a soil map. The frequency of observation is dependent upon several factors, including scale of mapping, intensity of mapping, design of map units, complexity of the landscape, and experience of the soil scientist. Observations are made to test and refine the soil-landscape model and predictions and to verify the classification of the soils at specific locations. Once the soil-landscape model is refined, a significantly smaller number of measurements of individual soil properties are made and recorded. These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand, silt, clay, salt, and other components. Properties of each soil typically vary from one point to another across the landscape. Observations for map unit components are aggregated to develop ranges of characteristics for the components. The aggregated values are presented. Direct measurements do not exist for every property presented for every map unit component. Values for some properties are estimated from combinations of other properties. While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests. Soil scientists interpret the data from these analyses and tests as well as the field-observed characteristics and the soil properties to determine the expected behavior of the soils under different uses. Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management. Some interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs. Data are assembled from other sources, such as research information, production records, and field experience of specialists. For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil. Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity. Soil conditions are predictable over long periods of time, but they are not predictable from year to year. For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years, but they cannot predict that a high water table will always be at a specific level in the soil on a specific date. After soil scientists located and identified the significant natural bodies of soil in the survey area, they drew the boundaries of these bodies on aerial photographs and 6 Custom Soil Resource Report identified each as a specific map unit. Aerial photographs show trees, buildings, fields, roads, and rivers, all of which help in locating boundaries accurately. 7 Soil Map The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. 8 Custom Soil Resource Report Soil Map (Village Drive Culvert Replacement) 106° 48' 42'' W 42'' 48' 106° W 52'' 47' 106° 346400 346500 346600 346700 346800 346900 347000 347100 347200 347300 347400 347500 40° 27' 31'' N 40° 27' 31'' N 4480200 4480200 4480100 4480100 4480000 4480000 4479900 4479900 4479800 4479800 4479700 4479700 4479600 4479600 Soil Map may not be valid at this scale. 4479500 40° 27' 6'' N 40° 27' 6'' N 4479500 346400 346500 346600 346700 346800 346900 347000 347100 347200 347300 347400 347500 Map Scale: 1:5,400 if printed on A landscape (11" x 8.5") sheet. Meters N 0 50 100 200 300 106° 48' 42'' W 42'' 48' 106° W 52'' 47' 106° Feet 0 250 500 1000 1500 Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84 9 Custom Soil Resource Report MAP LEGEND MAP INFORMATION Area of Interest (AOI) Spoil Area The soil surveys that comprise your AOI were mapped at Area of Interest (AOI) 1:24,000. Stony Spot Soils Very Stony Spot Soil Map Unit Polygons Warning: Soil Map may not be valid at this scale. Wet Spot Soil Map Unit Lines Enlargement of maps beyond the scale of mapping can cause Other Soil Map Unit Points misunderstanding of the detail of mapping and accuracy of soil Special Line Features line placement. The maps do not show the small areas of Special Point Features contrasting soils that could have been shown at a more detailed Blowout Water Features scale. Streams and Canals Borrow Pit Transportation Please rely on the bar scale on each map sheet for map Clay Spot Rails measurements. Closed Depression Interstate Highways Source of Map: Natural Resources Conservation Service Gravel Pit US Routes Web Soil Survey URL: Gravelly Spot Coordinate System: Web Mercator (EPSG:3857) Major Roads Landfill Local Roads Maps from the Web Soil Survey are based on the Web Mercator Lava Flow projection, which preserves direction and shape but distorts Background distance and area. A projection that preserves area, such as the Marsh or swamp Aerial Photography Albers equal-area conic projection, should be used if more Mine or Quarry accurate calculations of distance or area are required. Miscellaneous Water This product is generated from the USDA-NRCS certified data as Perennial Water of the version date(s) listed below. Rock Outcrop Soil Survey Area: Routt Area, Colorado, Parts of Rio Blanco and Saline Spot Routt Counties Survey Area Data: Version 7, Oct 13, 2017 Sandy Spot Severely Eroded Spot Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Sinkhole Slide or Slip Date(s) aerial images were photographed: May 8, 2012—Oct 5, 2017 Sodic Spot The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background 10 Custom Soil Resource Report MAP LEGEND MAP INFORMATION imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. 11 Custom Soil Resource Report Map Unit Legend (Village Drive Culvert Replacement) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 50C Lintim loam, 3 to 12 percent 56.9 47.0% slopes - DRAFT 50F Routt loam, 25 to 65 percent 26.9 22.3% slopes, very stony - DRAFT 52A Menbar loam, 0 to 3 percent 15.9 13.1% slopes - DRAFT 133 Lintim loam, 3 to 25 percent 21.4 17.7% slopes - DRAFT Totals for Area of Interest 121.1 100.0% Map Unit Descriptions (Village Drive Culvert Replacement) The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it 12 Custom Soil Resource Report was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha-Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. 13 Custom Soil Resource Report Routt Area, Colorado, Parts of Rio Blanco and Routt Counties 50C—Lintim loam, 3 to 12 percent slopes - DRAFT Map Unit Setting National map unit symbol: k0g9 Elevation: 6,600 to 8,400 feet Mean annual precipitation: 18 to 25 inches Mean annual air temperature: 37 to 41 degrees F Frost-free period: 50 to 80 days Farmland classification: Farmland of statewide importance Map Unit Composition Lintim and similar soils: 80 percent Minor components: 20 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Lintim Setting Landform: Hills Landform position (three-dimensional): Head slope, nose slope, side slope Down-slope shape: Linear Across-slope shape: Concave, convex Parent material: Loess derived from igneous and sedimentary rock and/or slope alluvium derived from shale Typical profile A1 - 0 to 5 inches: loam A2 - 5 to 20 inches: loam Bt1 - 20 to 30 inches: clay Bt2 - 30 to 40 inches: clay BC - 40 to 65 inches: clay Properties and qualities Slope: 3 to 12 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 10.1 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 5c Hydrologic Soil Group: C Ecological site: Deep Clay Loam (R048AY247CO) Hydric soil rating: No 14 Custom Soil Resource Report Minor Components Evna Percent of map unit: 10 percent Landform: Hills Landform position (three-dimensional): Head slope, nose slope, side slope, base slope, interfluve Down-slope shape: Convex, concave, linear Across-slope shape: Concave, convex, linear Ecological site: Stony Loam (R048AY237CO) Hydric soil rating: No Venable Percent of map unit: 5 percent Landform: Drainageways Down-slope shape: Linear Across-slope shape: Concave Ecological site: Mountain Meadow (R048AY241CO) Hydric soil rating: Yes Impass Percent of map unit: 5 percent Landform: Hills Landform position (three-dimensional): Head slope, nose slope, side slope, base slope, interfluve Down-slope shape: Convex, concave, linear Across-slope shape: Concave, convex, linear Ecological site: Claypan (R048BY296CO) Hydric soil rating: No 50F—Routt loam, 25 to 65 percent slopes, very stony - DRAFT Map Unit Setting National map unit symbol: k0gc Elevation: 6,900 to 7,800 feet Mean annual precipitation: 20 to 25 inches Mean annual air temperature: 35 to 39 degrees F Frost-free period: 50 to 80 days Farmland classification: Not prime farmland Map Unit Composition Routt, very stony, and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Routt, Very Stony Setting Landform: Mountain slopes Landform position (three-dimensional): Mountainflank 15 Custom Soil Resource Report Down-slope shape: Linear Across-slope shape: Concave, convex, linear Parent material: Slope alluvium and/or colluvium derived from sandstone and shale Typical profile Oi - 0 to 1 inches: slightly decomposed plant material A1 - 1 to 12 inches: loam A2 - 12 to 22 inches: loam A3 - 22 to 27 inches: loam B/E - 27 to 29 inches: clay loam B/E - 29 to 31 inches: loam Bt1 - 31 to 46 inches: clay Bt2 - 46 to 65 inches: clay Properties and qualities Slope: 25 to 65 percent Percent of area covered with surface fragments: 1.0 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Runoff class: Very high Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 9.8 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 7e Hydrologic Soil Group: C Ecological site: Aspen Woodland (F048AY449CO) Hydric soil rating: No Minor Components Venable Percent of map unit: 5 percent Landform: Drainageways Down-slope shape: Linear Across-slope shape: Concave Ecological site: Mountain Meadow (R048AY241CO) Hydric soil rating: Yes Impass Percent of map unit: 5 percent Landform: Hills Landform position (three-dimensional): Head slope, nose slope, side slope, base slope, interfluve Down-slope shape: Concave, convex Across-slope shape: Concave, convex Ecological site: Claypan (R048BY296CO) Hydric soil rating: No 16 Custom Soil Resource Report Slater Percent of map unit: 5 percent Landform: Mountain slopes Landform position (three-dimensional): Mountainflank, side slope Down-slope shape: Linear Across-slope shape: Linear, convex, concave Ecological site: Aspen Woodland (F048AY449CO) Other vegetative classification: ASPEN (null_3) Hydric soil rating: No 52A—Menbar loam, 0 to 3 percent slopes - DRAFT Map Unit Setting National map unit symbol: k0gd Elevation: 6,900 to 8,200 feet Mean annual precipitation: 20 to 28 inches Mean annual air temperature: 37 to 41 degrees F Frost-free period: 30 to 60 days Farmland classification: Not prime farmland Map Unit Composition Menbar and similar soils: 90 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Menbar Setting Landform: Flood plains Landform position (three-dimensional): Talf Down-slope shape: Linear Across-slope shape: Concave Parent material: Alluvium derived from igneous and sedimentary rock Typical profile A1 - 0 to 5 inches: loam A2 - 5 to 17 inches: loam A3 - 17 to 22 inches: loam A4 - 22 to 32 inches: clay loam AC - 32 to 39 inches: clay loam C1 - 39 to 45 inches: sandy loam C2 - 45 to 55 inches: loamy sand 2C3 - 55 to 60 inches: very gravelly sand Properties and qualities Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Somewhat poorly drained Runoff class: Low 17 Custom Soil Resource Report Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: About 18 to 36 inches Frequency of flooding: Rare Frequency of ponding: None Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 9.4 inches) Interpretive groups Land capability classification (irrigated): 5c Land capability classification (nonirrigated): 5c Hydrologic Soil Group: C Ecological site: Mountain Meadow (R048AY241CO) Hydric soil rating: No Minor Components Venable Percent of map unit: 10 percent Landform: Oxbows Down-slope shape: Linear Across-slope shape: Concave Ecological site: Mountain Meadow (R048AY241CO) Hydric soil rating: Yes 133—Lintim loam, 3 to 25 percent slopes - DRAFT Map Unit Setting National map unit symbol: k0k1 Elevation: 7,190 to 7,910 feet Mean annual precipitation: 21 to 27 inches Mean annual air temperature: 40 to 41 degrees F Frost-free period: 50 to 80 days Farmland classification: Not prime farmland Map Unit Composition Lintim and similar soils: 90 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Lintim Setting Landform: Hills Landform position (three-dimensional): Head slope, nose slope, side slope, base slope Down-slope shape: Linear Across-slope shape: Linear, convex, concave 18 Custom Soil Resource Report Parent material: Loess derived from igneous and sedimentary rock and/or slope alluvium derived from shale Typical profile A1 - 0 to 5 inches: loam A2 - 5 to 20 inches: loam Bt1 - 20 to 30 inches: clay Bt2 - 30 to 40 inches: clay BC - 40 to 65 inches: clay loam Properties and qualities Slope: 3 to 25 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Runoff class: High Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 10.5 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 6e Hydrologic Soil Group: C Ecological site: Deep Clay Loam (R048AY247CO) Hydric soil rating: No Minor Components Venable Percent of map unit: 5 percent Landform: Drainageways Down-slope shape: Linear Across-slope shape: Concave Ecological site: Mountain Meadow (R048AY241CO) Hydric soil rating: Yes Slater Percent of map unit: 5 percent Landform: Hills Landform position (three-dimensional): Side slope, head slope, nose slope Down-slope shape: Concave, convex Across-slope shape: Concave, convex Ecological site: Aspen Woodland (F048AY449CO) Hydric soil rating: No 19 References American Association of State Highway and Transportation Officials (AASHTO). 2004. Standard specifications for transportation materials and methods of sampling and testing. 24th edition. American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes. ASTM Standard D2487-00. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service FWS/OBS-79/31. Federal Register. July 13, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric soils in the United States. National Research Council. 1995. Wetlands: Characteristics and boundaries. Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. http://www.nrcs.usda.gov/wps/portal/ nrcs/detail/national/soils/?cid=nrcs142p2_054262 Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, U.S. Department of Agriculture Handbook 436. http:// www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053577 Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. http:// www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053580 Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and Delaware Department of Natural Resources and Environmental Control, Wetlands Section. United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report Y-87-1. United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ home/?cid=nrcs142p2_053374 United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http://www.nrcs.usda.gov/wps/portal/nrcs/ detail/national/landuse/rangepasture/?cid=stelprdb1043084 20 Custom Soil Resource Report United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI. http://www.nrcs.usda.gov/wps/portal/ nrcs/detail/soils/scientists/?cid=nrcs142p2_054242 United States Department of Agriculture, Natural Resources Conservation Service. 2006. Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/? cid=nrcs142p2_053624 United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. U.S. Department of Agriculture Handbook 210. http:// www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf 21 APPENDIX F – FIELD DATA SHEETS Western Bionomics Inc. Natural Resource Management Services Page 15 APPENDIX F – PCN FORM Western Bionomics Inc. Natural Resource Management Services Page 16 Sacramento District Nationwide Permit Program Regional Conditions Checklist for Colorado U.S. ARMY CORPS OF ENGINEERS BUILDING STRONG ® On March 18, 2012, the U.S. Army Corps of Engineers’ South Pacific Division approved 26 regional conditions for the 2012 Nationwide Permits (NWP) in Colorado, within the Sacramento District. This checklist is intended to assist applicants with completing the South Pacific Division Pre-Construction Notification Checklist and to ensure compliance with the regional conditions. This checklist does not include the full text of each regional condition. Please refer to the 2012 Regional Conditions in Colorado when completing this checklist (http://www.spk.usace.army.mil/Portals/12/documents/regulatory/nwp/2012_nwps/2012-NWP-RC-CO.pdf). Please check the box to indicate you have read and have/will comply with the regional condition and provide a rationale on how you have/will comply with the condition. Check Regional Condition Compliance Rationale 1. Nationwide Permit 12. PCN must be submitted N/A, not NWP 12. for open trenching in perennial waters or if the utility line is for the purpose of water transmission 2. Nationwide Permits 12 and 14. PCN must be N/A, not NWP 14. submitted for projects in the Colorado River Basin. X 3. Nationwide Permit 13. PCN must be submitted N/A, not NWP 13. for bank stabilization exceeding 250 feet or in streams with an average width of less than 20 feet. For streams with a width less than 20 feet, activities are limited to no more than ¼ cubic yard per linear foot. 4. Nationwide Permit 23. PCN must be submitted. N/A, not NWP 23. 5. Nationwide Permit 27. N/A, not NWP 27. Fishery enhancement in perennial streams not authorized. Channel realignment not authorized. Structures must allow passage of aquatic organisms. Structures must not impede navigation. Concrete/grout not authorized. Construction of water parks and flood control projects not authorized. Page 1 of 2 Revised January 7, 2013. For the most recent version of this checklist, visit the Sacramento District webpage Check Regional Condition Compliance Rationale 6. Nationwide Permits 29 and 39. Floodplain map N/A, not NWP 29 or 39. must be submitted with the PCN. X 7. Important Spawning Areas. Complies, no important spawning areas present. Will not destroy spawning areas or be conducted during trout and Kokanee spawning seasons. Bio-engineering required for bank protection activities over 50 feet. PCN required for activities in important spawning areas. X 8. Removal of Temporary Fills. Horizontal marker Complies, no temporary fills proposed. must be used in wetlands. X 9. Fens. NWPS, with the exception of 3, 5, 6, 20, 27, Complies, no fens present. 32, 37 and 38, are revoked in fens and wetlands adjacent to fens. PCN required for these other NWPs. X 10. Springs. PCN must be submitted within 100 feet Complies, no springs present. of discharge of a spring. X 11. Suitable Fill. Complies, no unsuitable material in use. PCN must be submitted for the use of broken concrete. Must demonstrate that soft engineering methods are not practicable. Concrete with exposed rebar not authorized. Page 2 of 2 Revised January 7, 2013. For the most recent version of this checklist, visit the Sacramento District webpage DEPARTMENT OF THE ARMY U.S. ARMY CORPS OF ENGINEERS, SACRAMENTO DISTRICT 1325 J STREET SACRAMENTO CA 95814-2922 May 24, 2018 Regulatory Division (SPK-2018-00299) City of Steamboat Springs Attn: Mr. Danny Paul P.O. Box 775088 Steamboat Springs, Colorado 80477-5088 Dear Mr. Paul; We are responding to yourApril 10, 2018, pre-construction notification for a Department of the Army Nationwide permit for the Village Drive Culvert Replacement project. The project site is located on Burgess Creek, in the City of Steamboat Springs, within the SW 7^ NW % of Section 27, Township 6 North, Range 84 West, 6th P.M., at Latitude 40.454743°, Longitude -106.805299°, Routt County, Colorado. Based on the information you provided to this office, the Village Drive Culvert Replacement project involves the discharge of fill material into 731 square feet of waters of the U.S. for the replacement of a culvert subject to Section 404 of the Clean Water Act. The specific activities that require DA authorization are site grading and placement of rip rap at either end of the replaced culvert. These activities will result in the permanent impacts to 473 square feet of palustrine scrub-shrub wetlands and 258 square feet of palustrine emergent wetlands. The proposed activities would be conducted in accordance with the Pre-Construction Notification submitta!, signed on April 5, 2018. We have determined that activities in waters of the U.S.'associated with the project are authorized by Nationwide Permit Number (NWP) 3 - Maintenance. You must comply with all terms and conditions of the NWP and applicable regional conditions. Information about the NWP terms and conditions and Sacramento District regional conditions for Colorado are available on ourwebsite at www.spf<.usace.armv.mii/Misssons/Recfulator//Permitfinc)/NationwidePermits.aspx. Within 30 days after completion of the authorized work, you must sign the enclosed Compliance Certification and return it to this office. This verification is valid untii March 1 8, 2022, when the existing NWPs are scheduled to be modified, reissued, or revoked. Furthermore, if you commence or are under contract to commence this activity before the date the NWP is modified, reissued, or revoked, you will have 12 months from the date of the modification, reissuance or revocation to complete the activity under the present terms and conditions. Failure to comply with the general and regional conditions of this NWP, or the project-specific special conditions of this authorization, may result in the suspension or revocation of your authorization. -2- Please refer to identification number SPK-2018-00299 in any correspondence concerning this project. If you have any questions, please contact me at the Grand Junction Regulatory Office, 400 Rood Avenue, Room 224, Grand Junction, Colorado 81501, by email at Tv!er.R.Adams(S).usace.armv.mil, or telephone at (970) 243-1199, extension 1013. We would appreciate yourfeedback on this permit action Including your interaction with our staff and processes. For more information about our program or to complete our Regulatory Program national customer service survey, visit our website at www.spk.usace.armv.mil/Missions/Regulatorv.aspx. Sincerely, Tyler R. Adams Project Manager Colorado West Section Enclosure (1) ec: Mr. Tyler Gibbs, Planning and Community Development City of Steamboat Springs Mr. Keliy Golfer. Western Bionomics Inc. Mr. Paul Moreau, Project Engineer Drexel Barrel! & Co Enclosure 1 Permit File Name: Village Drive Culvert Replacement Action ID: SPK-2018-00299 Nationwide Permit Number: 3 Permittee: City of Steamboat Springs Attn: Mr. Danny Paul P.O. Box 775088 Steamboat Springs, Colorado 80477-5088 County: Routt County Date of Verification: May 24, 2018 Within 30 days after completion of the activity authorized by this permit, sign this certification and return it to the following address: U.S. Army Corps of Engineers Sacramento District Colorado West Regulatory Section 400 Rood Avenue, Room 224 Grand Junction, Colorado 81501 FAX (970) 241-2358 DLL-CESPK-RD-Compliance^usace.army.mil Please note that your permitted activity is subject to a compliance inspection by a U.S. Army Corps of Engineers representative. If you fail to comply with the terms and conditions of the permit your authorization may be suspended, modified,'or revoked. If you have any questions about this certification, please contact the U.S. Army Corps of Engineers. A******** / hereby certify that the work authorized by the above-referenced permit, including all the required mitigation, was completed in accordance with the terms and conditions of the permit verification. Permittee Signature Date