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HERITAGE PARK - MJA220001 - SUBMITTAL DOCUMENTS - ROUND 3 - STORMWATER MANAGEMENT PLAN
STORMWATER MANAGEMENT PLAN (SWMP) REPORT Heritage Park Apartments Fort Collins, Colorado Prepared for: ColRich California Realty, Inc. 444 West Beech St. Suite 300 San Diego, CA 92101 Prepared by: Kimley-Horn and Associates, Inc. 3801 Automation Way Fort Collins, CO 80525 Project #: 096277019 Prepared: November 2nd, 2022 Heritage Park Apartments AT 1742 Heritage Circle Fort Collins, CO 80526 STORMWATER MANAGEMENT PLAN (SWMP) REPORT NOVEMBER 2022 Prepared By: Heritage Park Apartments│SWMP REPORT 2 TABLE OF CONTENTS SWMP PREPARER CERTIFICATION ........................................................................................ 5 PERMITTEE / OPERATOR RESPONSIBILITIES ....................................................................... 6 OWNER/PERMITTEE CERTIFICATION ..................................................................................... 7 OPERATOR/PERMITTEE CERTIFICATION............................................................................... 7 SUBCONTRACTOR CERTIFICATION ....................................................................................... 8 SUBCONTRACTOR CERTIFICATION ........................................................................................ 8 SUBCONTRACTOR CERTIFICATION ........................................................................................ 8 SUBCONTRACTOR CERTIFICATION ........................................................................................ 8 PROJECT DESCRIPTION AND NATURE OF CONSTRUCTION ............................................... 9 SITE LOCATION ......................................................................................................................... 9 EXISTING SITE CONDITIONS ................................................................................................... 9 PROPOSED CONSTRUCTION ACTIVITIES............................................................................. 11 PROJECT CONTACTS ............................................................................................................. 13 POTENTIAL POLLUTANT SOURCES ...................................................................................... 14 Disturbed and Stored Soils ........................................................................................................ 15 Vehicle Tracking of Sediments .................................................................................................. 15 Loading and Unloading Operations ........................................................................................... 15 Outdoor storage of construction site material, building materials, fertilizers, and chemicals ........ 16 Bulk storage of materials ........................................................................................................... 16 Significant dust or particulate generating processes .................................................................. 16 On-site waste management practices ........................................................................................ 16 Concrete truck/equipment washing, including the concrete truck chute and associated fixtures and equipment .......................................................................................................................... 17 Non-industrial waste sources such as worker trash and portable toilets ..................................... 17 Groundwater Dewatering (As Applicable) .................................................................................. 17 CONTROL MEASURE DESCRIPTIONS AND INSTALLATION/REMOVAL SEQUENCE ......... 18 STRUCTURAL PRACTICES FOR EROSION AND SEDIMENT CONTROL .............................. 19 NON-STRUCTURAL PRACTICES FOR EROSION AND SEDIMENT CONTROL ...................... 19 PHASED CONTROL MEASURE IMPLEMENTATION ............................................................... 20 3 Heritage Park Apartments │SWMP REPORT MATERIALS HANDLING AND SPILL PREVENTION ................................................................ 20 VEHICLE TRACKING AND DUST CONTROL ........................................................................... 21 WASTE MANAGEMENT AND DISPOSAL ................................................................................ 21 GROUNDWATER AND STORMWATER DEWATERING .......................................................... 21 MAINTENANCE AND INSPECTION REQUIREMENTS ........................................................... 22 INSPECTION SCHEDULE REQUIREMENTS ........................................................................... 22 INSPECTION PROCEDURES .................................................................................................. 22 CONTROL MEASURE MAINTENANCE / REPLACEMENT AND FAILED CONOTROL MEASURESS ........................................................................................................................... 24 FINAL VEGETATION AND STABILIZATION ............................................................................ 24 APPENDIX ................................................................................................................................ 25 Heritage Park Apartments│SWMP REPORT 4 APPENDIX A –SITE SPECIFIC REPORTS · SOIL INFORMATION · FIRM MAP · THREATENED AND ENDANGERED SPECIES APPENDIX B –EROSION CONTROL PLANS APPENDIX C –PERMIT INFORMATION · SITE SPECIFIC CDPHE PERMIT (TO BE INCLUDED UPON RECEIPT) · SITE SPECIFIC CDPHE FACT SHEET TO BE INCLUDED UPON RECEIPT) · CDPHE CDPS GENERAL PERMIT – CONSTRUCTION ACTIVITY (TO BE INCLUDED UPON RECEIPT) · CDPHE CDPS GENERAL PERMIT – CONSTRUCTION DEWATERING ACTIVITIES (TO BE INCLUDED UPON RECEIPT) · CDPHE CDPS GENERAL PERMIT – APPLICATION GUIDANCE DOCUMENT (TO BE INCLUDED UPON RECEIPT) APPENDIX D –EXAMPLE LOGS · OUTDOOR STORAGE OF MATERIALS LOG · VEHICLE EQUIPMENT MAINTENANCE AND FUEING LOG · ROUTINE MAINTENANCE LOG · ONSITE WASTE MANAGEMENT LOG · NON-INDUSTRIAL WASTE SOURCES LOG · ADDITIONAL POLLUTANT SOURCES LOG · LAND DISTURBANCE / CONTROL MEASURE INSTALLATION / STABILIZATION LOG · CONSTRUCTION STORMWATER SITE INSPECTION REPORT · CONTROL MEASURE CORRECTIVE ACTION LOG APPENDIX E –SPILL REPORTING · CDPHE ENVIRONMENTAL SPILL REPORTING APPENDIX F –CONTROL MEASURE DETAILS APPENDIX G -FLOODING SOLUTIONS MAP APPENDIX H -SEDIMENT BASIN SIZING CALCULATIONS 5 Heritage Park Apartments │SWMP REPORT SWMP PREPARER CERTIFICATION This Stormwater Management Plan (SWMP) has been prepared by me, or under my direct supervision, in substantial accordance with the requirements of the City of Fort Collins, (the “City”) Stormwater Criteria Manual. Emily Felton, P.E Colorado Registered PE #0054609 Project Design Engineer Heritage Park Apartments│SWMP REPORT 6 PERMITTEE / OPERATOR RESPONSIBILITIES This Stormwater Management Plan (SWMP) is prepared for ColRich California Realty (the “Site Developer”) to fulfill the erosion control requirements for the City of Fort Collins (the “City”) and the State of Colorado Department of Public Health and Environment (CDPHE) for the Heritage Park Apartments (the “Project”). This narrative, in conjunction with the Erosion Control Plans included in Appendix A, examines measures taken onsite to improve stormwater quality leaving the site, and also addresses important erosion control measures implemented prior to and during construction. A general overview of the procedures outlined in the SWMP which the Operator (the “Contractor”) shall follow is provided below for reference. Responsibility Operator 1. Submit the applicable City and CDPHE Permit Applications, copies of which is provided in the Appendices.¨ 2. Complete the Permittee / Operator SWMP Certifications provided within the SWMP Narrative.¨ 3. Complete the Operator / SWMP Administrator Contact Information identified in the SWMP Narrative.¨ 4. Post the Site in accordance with the requirements identified on the Erosion Control Plans included in the appendices of this report.¨ 5. Commence Control Measure installation and construction in accordance with the Phased Control Measure Implementation.¨ 6. Schedule and Complete a Stormwater Management Pre- Construction Meeting. ¨ 7. Complete Land Disturbance / Control Measure / Site Stabilization Log, a copy of which is included in the appendices of this report.¨ 8. Complete Inspections in accordance with the SWMP Inspection Schedule and Procedures outlined within the SWMP Narrative.¨ 9. Complete field maintenance or field modifications to Stormwater Management Practices based upon the results of the Inspection.¨ 10. Maintain current records of the SWMP Inspections in accordance with the Inspection Record Keeping identified in the SWMP Narrative. ¨ 11. Maintain current records of the Land Disturbance / Control Measure / Site Stabilization Log, a copy of which is included in the appendices of this report. ¨ 12. Maintain current records of the Control Measure Corrective Action Log, a copy of which is included in the appendices of this report.¨ 13. Maintain current records of the SWMP Amendment Log, a copy which is included in the appendices of this report.¨ 14. Achieve Final Stabilization in accordance with the Final Stabilization practices outlined within the SWMP Narrative.¨ 15. File the applicable City/CDPHE Construction Stormwater Inactivation Notice.¨ This summary is provided for Permittee / Operator convenience only and shall not be considered all inclusive with respect to stormwater management responsibilities. The Permittee / Operator shall familiarize themselves with the City requirements and SWMP, and implement stormwater management strategies based upon the recommendations identified herein and varying site conditions. 7 Heritage Park Apartments │SWMP REPORT OWNER/PERMITTEE CERTIFICATION I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Site Developer’s Authorized Agent:Date: OPERATOR/PERMITTEE CERTIFICATION I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Site Developer’s Authorized Agent:Date: Heritage Park Apartments│SWMP REPORT 8 SUBCONTRACTOR CERTIFICATION SUBCONTRACTOR CERTIFICATION I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Subcontractor’s Authorized Agent:Date: SUBCONTRACTOR CERTIFICATION I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Subcontractor’s Authorized Agent:Date: SUBCONTRACTOR CERTIFICATION I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Subcontractor’s Authorized Agent:Date: Note: Additional Subcontractor Certifications shall be completed as necessary. 9 Heritage Park Apartments │SWMP REPORT PROJECT DESCRIPTION AND NATURE OF CONSTRUCTION SITE LOCATION The proposed Heritage Park Apartment Project is located within the Northeast Quarter of Section 22, Township 7 North, Range 69 West of the Sixth Principal Meridian, City of Fort Collins, County of Larimer, Colorado. The site is on the parcel of land #9722112001, at approximate latitude and longitude (decimal degrees): 40.564610, 105.097728. The site is bound by: · North: Existing floodplain · East: S Shields Street · South: W Stuart Street · West: Existing multi-family development A vicinity map is provided below. EXISTING SITE CONDITIONS The site is approximately 14.84 acres of existing residential development, with an approximate disturbed area of 2.20 acres. Heritage Park Apartments│SWMP REPORT 10 SOILS The soil on the site is primarily Altvan-Satanta loam and Caruso Clay loam, which have the following characteristics, per the NRCS Web Soil Survey (included in Appendix A): Soil Characteristic Altvan-Satanta Loam1 Caruso Clay Loam1 Soil Type2 Clay Loam Clay Loam Typical Particle Size (Percent Passing No. 200)2 15% - 85% Dry Density2 102.0 – 119.9 PCF Permeability1 Well Drained Poorly Drained Hydrologic Soul Group1 B D Soil Structure2 Moist, dense, stiff Soil Erodibility (K-Factor)1 0.60 0.06 Soil Texture2 Moist, dense, stiff Soil Depth2 7 to 25 feet below ground surface 1. Data from the NRCS Web Soil Survey report. 2. Data from Geotechnical Evaluation performed by Earth Engineering Consultants According to the Geotechnical Evaluation performed by Earth Engineering Consultants, LLC on November 23, 2021 (included in Appendix A), the site soils have a low risk of sulfate attack on Portland cement concrete. EXISTING DRAINAGES AND DISCHARGE POINTS The Site is located within the Spring Creek and Canal Importation Basins. The Master Plan for these basins is currently being updated, according to the City of Fort Collins website. Portions of this property are in the city-designated Canal Importation floodplain and floodway. The Flooding Solutions Map indicates that there are no current upgrades to storm infrastructure near the site. No flooding, water quality, nor Master Plan improvements are recommended with the Site by the Flooding Solutions Map included in Appendix G. The site is located within City of Fort Collins Federal Emergency Management Agency (FEMA) Flood Insurance Rate Map Number 08069C0978G and the property being developed is designated as an area outside of the 100-year floodplain. The updated FEMA maps is included in Appendix A. 11 Heritage Park Apartments │SWMP REPORT The existing Site is relativity flat with slopes ranging from 1.5% to 35%. There is currently an existing detention pond in the northeast section of the site. The majority of the Site currently slopes to the northeast, conveying water into an existing detention pond, which are released into the existing storm infrastructure system along S Shields Street. The property directly north of the Site is collected by an existing floodplain along the northern property line, routing all discharges around the Site, east to the Old Town and Spring Creek basins. S Shields Street is adjacent to the Site to the east. W Stuart Street is adjacent to the Site to the south. An existing multi-family development is adjacent to the site to the west. Flows are routed south along A Shields Street and east along W Stuart Street towards an existing 5’ Type R inlet along the north side of W Stuart Street. PATHWAY TO NEAREST STATE WATER The existing discharge point for this site is the existing detention pond in the northeast section of the site, which routes flows east to the existing storm infrastructure along S Shields Street. Flows travel east to the Old Town and Spring Creek basin. EXISTING VEGETATION The existing site is utilized as a multi-family apartment complex with ground cover primarily made up of turf sod, rock, and wood mulch. Existing impervious cover accounts for 43.8% of the total site area. Based on visual inspection, it is estimated the existing vegetative ground cover accounts for 50-60%. GROUNDWATER According to the Geotechnical Evaluation performed by Earth Engineered Consultants on November 23, 2021, groundwater was encountered at depths ranging between approximately 9 to 15 feet below ground surface, included in Appendix A. There is no known groundwater contamination. SOIL EROSION POTENTIAL The soil erodibility K-Factor ranges from 0.06 to 0.60, with higher values indicating higher potential for erosion. The K-factor range indicates low to moderate potential for soil erosion. Additionally, the NRCS Soil Report indicates that the existing soils have high infiltration potential and therefore moderate erosion can be expected. PROPOSED CONSTRUCTION ACTIVITIES The proposed site includes 30 additional dwelling unit buildings with associated driveways and landscape improvements, as well as building. Additions of the clubhouse are being completed under a sperate permit and submittal. Utilities will be installed in support if the new buildings, along with appropriate stormwater facilities, water quality to mitigate and treat stormwater runoff from the site is provided in an extended detention basin Site and disturbance areas anticipated for the project construction activities are indicted below: · Limits of Construction (including off-site): ±16.28 Acres · Disturbance Area: ±2.20 Acres These areas are as indicated on the Erosion Control Plan included in Appendix B. Heritage Park Apartments│SWMP REPORT 12 POSSIBLE ENVIRONMENTAL IMPACTS Impacts to downstream Old Town and Spring Creek basins may be possible with the construction of this site. This location could also impact the following threatened and endangered species, as listed by the U.S. Fish & Wildlife Service’s IPaC resource list (included in Appendix A): · Gray Wolf (Endangered) · Preble’s Meadow jumping mouse (Threatened) · Eastern Black Rail (Threatened) · Piping Plover (Threatened) · Whooping Crane (Endangered) · Greenback Cutthroat Trout (Threatened) · Pallid Surgeon (Endangered) · Monarch Butterfly (Candidate) · Ute Ladies’-tresses (Threatened) · Western Prairie Fringed Orchid (Threatened) STATE AND FEDERAL PERMITS The following table identifies possible State and Federal permits related to development and the applicability to this project. Permit Applicability To This Project State CDPHE Stormwater Permit associated with Construction Activities Will be required US Army Corps of Engineers 404 Permits for Stream Crossing Not Applicable State CDPHE Construction Dewatering Permits Not anticipated, but may be required depending on groundwater conditions at the time of construction State CDPHE Air Pollution Emission Notification (APEN) Permit Not Applicable NEPA Regulations Not Applicable State CDPHE 401 Water Quality Certifications Stream Crossing Not Applicable 13 Heritage Park Apartments │SWMP REPORT State Division of Water Resources Dewatering and other water use permits Not anticipated, but may be required depending on groundwater conditions at the time of construction PROJECT CONTACTS SWMP PREPARER Company:Kimley-Horn and Associates, Inc. Contact:Emily Felton, P.E. Address:3801 Automation Way, Suite 210 Fort Collins, CO 80525 Phone:720.636.8273 Email:emily.felton@kimley-horn.com OWNER/PERMITTEE Company:ColRich California Realty, Inc. Contact:Mathew Moiseve Address:444 West Beech Street, Suite 300 San Diego, CA 92101 Phone:720.414.5210 Email:jheiney@thejredgroup.com OPERATOR/PERMITTEE Company: Contact: Address: Phone: Email: Heritage Park Apartments│SWMP REPORT 14 POTENTIAL POLLUTANT SOURCES The below table identifies whether or not the most commonly identified sources of pollutants will be present on this construction site. The following sections provide descriptions of the pollutant sources likely to be present at this site and proposed control measures to mitigate the potential pollution. Logs for the identification of pollutant sources are included in Appendix D for reference and use. Pollutant Source Anticipated to be Present on This Project All disturbed and stored soils Yes Vehicle tacking of sediments Yes Management of contaminated soils No Loading and unloading operations Yes Outdoor storage of construction site material, building materials, fertilizers, and chemicals Yes Bulk storage of materials Yes Vehicle and equipment maintenance and fueling No Significant dust or particulate generating processes Yes Routine maintenance activities involving fertilizers, pesticides, detergents, fuels, solvents, and oils No On-site waste management practices Yes Concrete truck/equipment washing, including the concrete truck chute and associated fixtures and equipment Yes Dedicated asphalt and concrete batch plants No Non-industrial waste sources such as worker trash and portable toilets Yes Other non-stormwater discharges including construction dewatering not covered under the Construction Dewatering Discharges general permit No 15 Heritage Park Apartments │SWMP REPORT Other areas of operations where spills can occur No DISTURBED AND STORED SOILS Approximately 13.51% percent of this site (on-site and off-site) will be disturbed with the Construction Activities. Once soils have been disturbed, they do not retain the same compaction as in their native state, therefore surface runoff can cause more soil erosion than was historically observed. Based upon the site design, this site will not disturb all areas of construction until it is required to as part of the Construction Activities (phasing). Once exposed those areas of exposed soils will be kept in a roughened condition (surface roughening). In the event that these erosion control practices do not keep sediment on site, a structural barrier (silt fence) will be used and is called out for on the perimeter. If soil manages to migrate from the disturbed areas onto the hard surfaces, it will be swept or scraped (street sweeping) to prevent the migration of sediment. In case that sediment is washed away too quickly the curb inlets will need protection (rock sock style inlet protection). Stockpiles in the same respect do not retain the same compaction and are more susceptible to soil erosion. Stockpiles on this site shall be placed in or near the center of the site and away from any drainage swales to not require perimeter run off controls (Materials/Site Management Control). The Erosion Control Plans in Appendix B show the location of stockpiles near the northwest corner of the site. The stockpile will be kept loose, not compacted, and watered as needed to prevent dust issues (site watering). The stockpile will be monitored for signs of erosion displacement and sediment accumulation and if conditions warrant it, the stockpile will be structurally covered or if it is going to sit a long while will be reseeded (temporary seeding). VEHICLE TRACKING OF SEDIMENTS Vehicle tracking of sediment may occur throughout the construction process and along all areas where the pavement meets the disturbed dirt. This occurs most often after any melt off or rain conditions when mud collects on vehicles tires and is tracked out onto the road consequently leaving site. This increases the possibility of sediment discharging to the storm system. To prevent tracking, construction fence (site barrier/site management control) will be used on the two accessible sides of the site to limit the access by the Contractor and their Subs to only two construction entrances (vehicle tracking pads to be installed). There will be a gate at the entrances that will be closed before Contractors come on site during the muddy days (site management control) and will only be opened to let larger deliveries drop off, otherwise Subcontractor parking will be kept to the street. All Contractors have signed contracts that will have them clean the streets if they are found to be tracking dirt onto the street (site management control). The tracking pad will be monitored visually every day and if track-out becomes a significant problem a larger or more robust tracking pad may be installed. Otherwise, all track-out that reaches the street will be scraped and swept (street sweeping). Secondary controls at the closest affected drainage structures will have protection (inlet protection) to capture sediment not swept up in a timely manner. LOADING AND UNLOADING OPERATIONS During this project there will be a diverse amount of loading and unloading going on. There foundation workers will have to deliver forms to the site and deliver premixed concrete. Building materials will have to be staged around the site and Landscapers will have to pile the materials on site to complete the landscape work. Though the loading and unloading vehicles will be contributing to the track out of materials, depending on the material being delivered to the site they may have a significant spill potential. In addition to the vehicle tracking of sediments section of this report, (VTC, Sweeping, etc.) Contractors may be required to Heritage Park Apartments│SWMP REPORT 16 park their vehicles on the adjacent roadways (site management control). Where the project is mostly dirt and not stable semi-trailers will be directed to pull alongside the project and site loaders will be used to off load the trailers. Where the trailers must access the site, an attempt will be made to keep the vehicle on the VTC or other stabilized storage areas. Where the site parking lot and private drives have been installed materials will be placed in piles along the hardscape where the use of site forklifts will be more heavily used. When loading and unloading is occurring, depending on the materials, there may be an increased problem of containers being dropped, punctured, or broken. These off-loading activities will be done under roofs or awnings where possible, locating away from storm drains and will have nearby spill kits accessible. Spills on site will be addressed using spill prevention and response procedures. OUTDOOR STORAGE OF CONSTRUCTION SITE MATERIAL, BUILDING MATERIALS, FERTILIZERS, AND CHEMICALS It is anticipated that inert material like wood, shingles, tiles, siding insulation, and stone will be stored on site and outside in the elements. It is also anticipated that materials that do not weather well (cement, mortar, etc.) will also be located outside. Chemicals are not anticipated to be left outside. As the inert materials have a lower potential to leave the site, they will be monitored during inspection to make sure they are not being impacted by the exposure to the elements (site management control). The materials that will need added attention are the cements and mortars as they quickly mix with water and cause pollution issues. These materials when not stored inside will be placed on pallets to get above potential surface runoff and covered with tarps or plastic to prevent mixing with stormwater (materials management control). Very small quantities of chemical are needed to contaminate stormwater so the fertilizers, paints, form oils, petroleum products, and other typical chemicals, will be stored in the construction connex box, trailers, vehicles, or the like out of contact with precipitation (materials management control). If not stored in a location as described, secondary containment will be required. BULK STORAGE OF MATERIALS Any bulk storage of materials will be stored inside if possible (site management). If stored outside, bulk storage will require secondary containment. Any materials stored that could rupture and cause a spill shall be stored in an area that allows the adequate room from spread without impacting drainage infrastructure (materials management). SIGNIFICANT DUST OR PARTICULATE GENERATING PROCESSES This project will result in earth moving activities, street sweeping, and track-out and carry out, and bulk materials transport. As these activities will result in offsite transport of atmospheric pollution; reasonable precautions shall be taken. The project will follow all required “BMPs” articulated in the Fugitive Dust Manual and a least one additional BMP included during each of the identified activities in accordance with City Ordinance No. 044,2016. Also, a copy of the Dust Control Manual will be kept in the trailer during construction for reference. Such activities will include but not limited to watering the site, covering trucks, slower site speeds, and vehicle tracking mentioned above. ON-SITE WASTE MANAGEMENT PRACTICES All large and heavy weighted waste piles (concrete chunks, excavated pipes, etc.) will be kept in a neat, grouped pile until the material is to be disposed of properly. These piles will only be stored a short duration 5-10 days and will be kept 50 feet from any drainage course or inlet (Administrative Control). All dry wastes will be maintained through dumpsters and monthly hauler removal (hauler will be notified if dumpster becomes full and hauled off as needed). Where available by the hauling company the dumpster will be 17 Heritage Park Apartments │SWMP REPORT covered. If not practical or available by the haul company, an increased removal schedule will be followed and the “Max fill line” on the dumpster will be strictly followed. Corners of the dumpsters will be monitored for “Dumpster Juice” leaking into the soil in dry conditions and rain/melt off conditions looking for it is mixing with the runoff. Dumpsters, like the waste piles, will be located at least 50 feet from any drainage course or inlet. Workers will be sent around at the end of the day to collect trash to prevent trash being left out overnight. No construction debris (including broken concrete) will be buried on site. CONCRETE TRUCK/EQUIPMENT WASHING, INCLUDING THE CONCRETE TRUCK CHUTE AND ASSOCIATED FIXTURES AND EQUIPMENT Concrete will be a portion of this project. It is anticipated that it will be used with the joints around the manholes, pour in place inlets, curb and gutter installation, sidewalks, pavement, building walls, and foundations. Premixed concrete trucks will be used in this process and will be delivered to the site and when pouring the foundation, a pump truck will be used all of which will need to be maintained through the washing of their chutes and pump arms to prevent the concrete from hardening and ruining the equipment. This concrete wash water has a high alkaline content which is hazardous material to terrestrial and aquatic wildlife. A section of dirt near the entrance will be excavated and compacted around the sides formed to retain the concrete wash water on site (as an acceptable practice by the State) so long as the wash water is kept in the washout (concrete washout). There will be a rock pad for the truck to park on while washing as to prevent tracking from this washout (VTC). Later in the project after the parking lots curb and gutter has been poured the use of a mobile washout facility will be used on site in a similar location and after the ground has been leveled (concrete washout – mobile). The Contractor (including all masonry and concrete tradesmen) shall clean out equipment within the washout area so that the runoff is not allowed to leave the washout. The only exception would be for them to wash in the next day’s pour location. All concrete workers will be made aware of the where they are to wash (site management controls & education). If there is a significant amount of spillage when the transfer from concrete truck to pump truck occurs, a tarp or other ground cloth should be used to collect spillage (ground cover control). NON-INDUSTRIAL WASTE SOURCES SUCH AS WORKER TRASH AND PORTABLE TOILETS Since facilities are not located nearby for workers to use, trash and sanitary facilities will be required on the site. Worker trash will be comingled with the industrial trash and will follow the same controls with the caveat that a trashcan will be located near the entrance of the site as the Contractor will need to dump their trash from lunch, etc. and this will be emptied weekly or more frequently, if needed. If tipped over and when being cleaned, portable toilet facilities become a potential discharge if not cleaned up. If human waste is spilled, it will need to be treated as a biological hazard of untreated sewage and will need to be cleaned up in accordance with Larimer County Health Department Guidance. The toilets will be staked in a way to prevent tipping on a dirt surface and located at least 50 feet from a drainage course or inlet. If the site cannot accommodate a portable toilet on dirt, a containment pan or other secondary containment will be provided. They will also be anchored prevent from tipping. All materials shall be properly disposed of in accordance with the law. GROUNDWATER DEWATERING (AS APPLICABLE) Based upon the geotechnical data, ground water levels indicate that groundwater dewatering may be required during some of the deeper excavations. Groundwater has in most excavations mixed with the dirt and as they are pumped, they will add an increased velocity coming out of the out-flow end contributing to erosion and speeding the transport of the suspended sediment particles. Also, construction dewatering Heritage Park Apartments│SWMP REPORT 18 activities must be identified in the Erosion Control Report if they are to be infiltrated on site. If the material is anticipated to be pumped to a stormwater conveyance the proper Construction Dewatering Permit must be pulled from the State of Colorado. If pumping activities are to occur on the site, the use of rock packs on the intake end of the pump will be used and a silt bag will be used on the outflow end of the pump to reduce the silt and sediment from leaving the activity (dewatering Control Measure). If this will be under a Dewatering Permit water samples will be collected in accordance with that permit. CONTROL MEASURE DESCRIPTIONS AND INSTALLATION/REMOVAL SEQUENCE The operator shall utilize the following general construction practices which are required throughout the project at locations shown on the SWMP or as dictated by construction activities. · Materials handling and spill prevention · Waste management and disposal · Hazardous material storage and containment area · Vehicle maintenance fueling and storage · Solid waste containment facility · Sanitary waste facility · Street Sweeping (SS) · SWMP Information Sign (S) These practices shall remain active and operational throughout the duration of construction and be identified on the SWMP. Due to any phasing required for the Project, it is understood that these control measures may be relocated as needed to facilitate construction operations. The Operator shall locate and identify the original and current location of these control measures on the SWMP throughout the construction of the Project. General construction sequencing and activities associated with this Project consist of the following: Initial Phase 1. Prepare and submit the City of Fort Collins Excavation Permit and the CDPHE Construction Stormwater Discharge Permit as required. A copy of the permit(s) shall be provided to the Site Developer upon receipt from the City/CDPHE. 2. Install SWMP Information Sign (S) in accordance with applicable City, State, and Site Developer requirements. 3. Install Vehicle Tracking Control (VTC). 4. Prepare Stabilized Staging Area (SSA). Contractor shall coordinate location with the Overall Developer and note the actual size and location of this area. 5. Install and denote on the plan any of the following areas: trailer, parking, lay down, porta-potty, wheel wash, concrete washout, mason's area, fuel and material storage containers, solid waste containers, etc. 6. Install perimeter controls including Silt Fence (SF) and Rock Sock Perimeter Control (RS) around limits as shown on plan. Ensure that the Limits of Construction (LOC) are defined as necessary or known by all parties which will be responsible for construction on the Site. Construction Fence (CF) shall also be installed and modified, if applicable, on the plan. Limits of Construction may be located outside of this construction fence. 7. Install Inlet Protection (IP) at the existing culvert inlet, south of the Site. 8. Upon completion of the initial control measure installation the Operator shall schedule a Pre- Construction Meeting with the City and Site Developer to confirm control measures installed are adequate prior to proceeding with additional land disturbing activities. 19 Heritage Park Apartments │SWMP REPORT Interim/Final Phase 9. Install Concrete Washout Area (CWA) prior to construction of concrete improvements. 10. Install utilities, storm sewers, curb, and gutters. 11. Install Inlet Protection (IP) at each proposed inlet. 12. Begin fine grading the Site. Stockpile materials in accordance with the Soil Stockpile Management (SP) control measure. Permanently stabilize areas to be vegetated as they are brought to final grade. 13. Start construction of building pad and structures. 14. Grade and install Rain Gardens and Detention Pond, ensuring no compaction of existing soils within these areas. 15. Install appropriate Inlet Protection and Outlet Protection at Rain Garden and Detention Pond infrastructure. 16. Complete grading and installation of Permanent Stabilization (PS) over all areas in accordance with approved Landscape Plans. 17. Remove remaining control measures once Permanent Stabilization has been achieved and accepted by City Inspector. Repair and stabilize areas disturbed through control measure removal. 18. Notify the Site Developer of intent to file the Notice of Inactivation with the City/CDPHE and receive Site Developer acceptance to proceed with stormwater management close-out. 19. Notify the City/CDPHE of the intent to file the Notice of Inactivation and receive City/CDPHE acceptance prior to proceeding with filing the Notice of Inactivation. 20. Proceed with filing the Notice of Inactivation. 21. Provide the Site Developer with a copy of all stormwater documentation (permits, inspection reports, logs, etc.) upon completion of project stormwater Notice of Inactivation. STRUCTURAL PRACTICES FOR EROSION AND SEDIMENT CONTROL Structural control measures shall be implemented onsite to minimize erosion and sediment transport. Recommended control measures based upon a limited site review may be seen within the Erosion Control Plan included in the appendices of this report. Additional control measures shall be implemented by the Qualified Stormwater Manager if necessary to prevent sediment laden runoff from leaving the project site. The SWMP and Erosion Control Plan shall be updated to reflect any changes or revisions enacted in the field. Details of the control measures proposed for the Site are included in Appendix B. NON-STRUCTURAL PRACTICES FOR EROSION AND SEDIMENT CONTROL Non-Structural control measures shall be implemented onsite to minimize erosion and sediment transport. Recommended control measures based upon a limited site review may be seen within the Erosion Control Plan included in the appendices of this report. Additional control measures shall be implemented by the Qualified Stormwater Manager if necessary to prevent sediment laden runoff from leaving the project site. The SWMP and Erosion Control Plan shall be updated to reflect any changes or revisions enacted in the field. Details of the control measures proposed for the Site are included in Appendix B. A temporary sediment basin (intended to become permanent stormwater detention pond for the final site) shall be installed at the northeast section of the site. The required volume of the temporary sediment basin is 0.84 acre-feet. Calculations for the required sediment basin sizing are included in Appendix H. Based on the stage storage analysis, the proposed detention pond improvements will increase the storage capacity of the existing pond to 1.27 acre-feet. The proposed permanent detention pond volume will satisfy the required volume of 0.84 ac-ft for the proposed temporary sediment basin. Details of the control measures proposed for the Site are included in Appendix B. Heritage Park Apartments│SWMP REPORT 20 PHASED CONTROL MEASURE IMPLEMENTATION Since the Project will not require any major demolition, construction of the identified improvements will take place under two phases of construction as identified within the construction sequencing included within this report. A Land Disturbance, Control Measure Installation, and Stabilization Log is provided in Appendix D and shall be filled out accordingly during Control Measure implementation. MATERIALS HANDLING AND SPILL PREVENTION Any hazardous or potentially hazardous material that is brought onto the construction site shall be handled properly in order to reduce the potential for stormwater pollution. In an effort to minimize the potential for a spill of petroleum product or hazardous materials to come in contact with stormwater, the following steps shall be implemented: · Material Safety Data Sheets (MSDS) information shall be kept on site for any and all applicable materials. · All materials with hazardous properties (such as pesticides, petroleum products, fertilizers, detergents, construction chemicals, acids, paints, paint solvents, additives for soil stabilization, concrete, curing compounds and additives, etc.) shall be stored in a secure location, under cover and in appropriate, tightly sealed containers when not in use. · The minimum practical quantity of all such materials shall be kept on the job site and scheduled for delivery as close to time of use as practical. · A spill control and containment kit shall be provided on the construction site and location(s) shown on the Erosion Control Plan. · All of the product in a container shall be used before the container is disposed of. All such containers shall be triple rinsed, with water prior to disposal. The rinse water used in these containers shall be disposed of in a manner in compliance with State and Federal regulations and shall not be allowed to mix with stormwater discharges. · All products shall be stored in and used from the original container with the original product label and used in strict compliance with the instructions on the product label. · The disposal of excess or used products shall be in strict compliance with instructions on the product label. If utilized, temporary onsite fuel tanks for construction vehicles shall meet all state and federal regulations. Tanks shall have approved spill containment with the capacity required by the applicable regulations. From NFPA 30: All tanks shall be provided with secondary containment (i.e., containment external to and separate from primary containment). Secondary containment shall be constructed of materials of sufficient thickness, density, and composition so as not to be structurally weakened as a result of contact with the fuel stored and capable of containing discharged fuel for a period of time equal to or longer than the maximum anticipated time sufficient to allow recovery of discharged fuel. The tanks shall be in sound condition free of rust or other damage which might compromise containment. Fuel storage areas shall meet all Environmental Protection Agency (EPA), OSHA and other regulatory requirements for signage, fire extinguisher, etc. Hoses, valves, fittings, caps, filler nozzles and associated hardware shall be maintained in proper working condition at all times. The location of fuel tanks shall be shown on the Erosion Control Plan and shall be located to minimize exposure to weather and surface water drainage features. The Operator shall develop and implement a Materials Handling and Spill Prevention Plan (MHSPP) in accordance with the EPA and State of Colorado requirements. In the event of an accidental spill, immediate 21 Heritage Park Apartments │SWMP REPORT action shall be undertaken by the Operator to contain and remove the spilled material. All hazardous materials, including contaminated soil, shall be disposed of by the Operator in the manner specified by federal, state, and local regulations and by the manufacturer of such products. As soon as possible, the spill shall be reported to the appropriate agencies. As required under the provisions of the Clean Water Act, any spill or discharge entering waters of the United States shall be properly reported. The Operator shall prepare a written record of any spill and associated clean-up activities of petroleum products or hazardous materials in excess of 1 gallon or reportable quantities, whichever is less. Any spills of petroleum products or hazardous materials in excess of Reportable Quantities as defined by EPA or the state or local agency regulations, shall be immediately reported to the Colorado Department of Public Health and Environment spill reporting lines. · CDPHE Environmental Release and Incident Reporting Line (877) 518-5608. For reference, a bulletin on Environmental Spill Reporting published by the CDPHE, has been included in Appendix E of this report. VEHICLE TRACKING AND DUST CONTROL Vehicle Tracking Control Measures (structural and non-structural) shall be implemented in order to control potential sediment discharges from vehicle tracking. Practices shall be implemented for all areas of potential vehicle tracking which include, but are not limited to reduced site access and utilization of designated haul routes. Areas of soil that are denuded of vegetation and have little protection from particles being picked up and carried by wind should be protected with a temporary cover or kept under control with water or other soil adhering products to limit wind transported particles exiting the site perimeter. WASTE MANAGEMENT AND DISPOSAL An effective first step towards preventing pollution in stormwater from work sites involves using a commonsense approach to improve the facility’s basic housekeeping methods. Poor housekeeping practices result in increased waste and potential for stormwater contamination. No solid materials are allowed to be discharged from the site with stormwater. All solid waste, including disposable materials incidental to the construction activities, must be collected, and placed in containers. Secure covers for the containers shall be provided at all times to meet state and local requirements. The location of solid waste receptacles shall be identified on the Erosion Control Plan by the Operator. Concrete waste is anticipated with this project; and therefore, a dedicated concrete washout is required. The Qualified Stormwater Manager shall take appropriate containment and treatment measures and document as necessary. GROUNDWATER AND STORMWATER DEWATERING Except as noted below, all discharges covered by this permit shall be composed entirely of stormwater associated with construction activity. · Emergency Fire Fighting Activities · Uncontaminated Spring Water · Landscape Irrigation Return Flow Heritage Park Apartments│SWMP REPORT 22 Groundwater dewatering is not anticipated. If encountered, the operator shall file for appropriate permits with the CDPHE. MAINTENANCE AND INSPECTION REQUIREMENTS INSPECTION SCHEDULE REQUIREMENTS A thorough inspection of the stormwater management system shall be performed and documented at least once every 7 calendar days, or once every 14 days, with post-storm event inspections conducted within 24 hours after the end of any precipitation or snowmelt. If more frequent inspections are required to ensure that control measures are properly maintained and operated, the inspection schedule shall be modified to meet this need. INSPECTION PROCEDURES The inspection shall include observations of: · The Construction Site Perimeter and Discharge Points. · All Disturbed Areas. · Areas Used for Material / Waste Storage That are Exposed to Precipitation. · Other Areas Determined to Have a Significant Potential for Stormwater Pollution. · Erosion and Sediment Control Measures Identified in the SWMP; and · Any Other Structural Control Measures That May Require Maintenance. The inspection must determine if there is evidence of, or the potential for, pollutants entering the drainage system. Control measures should be reviewed to determine if they still meet the design intent and operational criteria in the SWMP and if they continue to adequately control pollutants at the site. Any control measures not operating in accordance with the SWMP must be addressed as soon as possible, immediately in most cases, to minimize the discharge of pollutants and the SWMP must be updated, and inspections must be documented. Examples of specific items to evaluate during site inspections are listed below. This list is not intended to be comprehensive. During each inspection, the inspector shall evaluate overall pollutant control system performance as well as particular details of individual system components. Additional factors should be considered as appropriate to the circumstances. · Vehicle Tracking Control - Locations where vehicles enter and exit the site shall be inspected for evidence of offsite sediment tracking. Exits shall be maintained as necessary to prevent the release of sediment from vehicles leaving the site. Any sediment deposited on the adjacent roadway shall be removed as necessary throughout the day or at the end of every day and disposed of in an appropriate manner. Sediment shall not be washed into storm sewer systems. · Erosion Control Devices - Rolled erosion control products (nets, blankets, turf reinforcement mats) and marginally vegetated areas (areas not meeting required vegetative densities for final stabilization) must be inspected frequently. Rilling, rutting and other signs of erosion indicate the erosion control device is not functioning properly and additional erosion control devices are warranted. · Sediment Control Devices - Sediment barriers (silt fence, sediment control logs, etc.), traps and basins must be inspected, and they must be cleaned out at such time as their original capacity has been reduced by 50 percent. All material excavated from behind sediment barriers or in traps and 23 Heritage Park Apartments │SWMP REPORT basins shall be incorporated into onsite soils or spread out on an upland portion of the site and stabilized. To minimize the potential for sediment releases from the Project, site perimeter control devices shall be inspected with consideration given to changing up-gradient conditions. · Material Storage Areas - Material storage areas should be located to minimize exposure to weather. Inspections shall evaluate disturbed areas and areas used for storing materials that are exposed to rainfall for evidence of, or the potential for, pollutants entering the drainage system or discharging from the site. If necessary, the materials must be covered, or original covers must be repaired or supplemented. Also, protective berms must be constructed, if needed, in order to contain runoff from material storage areas. All state and local regulations pertaining to material storage areas shall be adhered to. · Vegetation - Seed/Sod shall be free of weedy species and appropriate for site soils and regional climate. Seeding, sodding, tacking, and mulching shall be completed, in accordance with the requirements outlined within the Project Manual and locations identified within the plans, immediately after topsoil is applied and final grade is reached. Grassed areas shall be inspected to confirm that a healthy stand of grass is maintained. Riprap, mulch, gravel, decomposed granite, or other equivalent permanent stabilization measures may be employed in lieu of vegetation based on site-specific conditions and Site Developer approval. · Discharge Points - All discharge points must be inspected to determine whether erosion and sediment control measures are effective in preventing discharge of sediment from the site or impacts to receiving waters. All necessary maintenance and repair shall be completed immediately. The inspection reports must be completed after each inspection. An important aspect of the inspection report is the description of additional measures that need to be taken to enhance plan effectiveness. The inspection report must identify whether the site was in compliance with the SWMP at the time of inspection and specifically identify all incidents of non-compliance. The Qualified Stormwater Manager shall ensure that, at a minimum, the following is recorded for each inspection and kept onsite for reference: · Inspection Date · Name(s) and Title(s) of Inspection Personnel · Location(s) of Discharges of Sediment and Other Pollutants from the Site · Location(s) of control measures Requiring Maintenance · Location(s) of Failed control measures · Location(s) of Additional Required control measures · Deviations from the Minimum Inspections Schedule (If Applicable) · Description of Corrective Actions · Certification of SWMP Compliance after adequate corrective action(s) taken, or where a report does not identify any incidents requiring corrective action, this certification shall be made by the inspector indicating compliance with the permit The use and maintenance of logbooks, photographs, field notebooks, drawings or maps should also be included in the SWMP records when appropriate. Copies of the Inspection Form and Control Measure Corrective Action Log have been included in Appendix D for reference and use. Heritage Park Apartments│SWMP REPORT 24 CONTROL MEASURE MAINTENANCE / REPLACEMENT AND FAILED CONOTROL MEASURESS Site inspection procedures noted above must address maintenance of control measures that are found to no longer function as needed and designed, as well as preventive measures to proactively ensure continued operation. The Qualified Stormwater Manager shall implement a preventative maintenance program to ensure that control measure breakdowns and failures are handled proactively. Site inspections should uncover any conditions which could result in the discharge of pollutants to storm sewers and surface waters and shall be rectified. For example, sediment shall be removed from silt fences on a regular basis to prevent failure of the control measure. Sediment shall be removed to an appropriate location so that it will not become an additional pollutant source. The inspection process must also include replacement of control measures when needed or the addition of new control measures in order to adequately manage the pollutant sources at the site. Any control measure deficiencies, replacement or additional control measures that may be required shall be documented on the Erosion Control Plans and on the appropriate Inspection Form. If amendments to the control measure are required, these amendments shall be documented on the Control Measure Amendment Log included in Appendix K for reference and use. FINAL VEGETATION AND STABILIZATION In the natural condition, the site soil is stabilized by means of native vegetation. Therefore, the final stabilization technique to be used at this project for stabilizing soils shall be to provide a protective cover of native vegetation, gravel road base, and granular stabilization material. Seeding should be conducted after final grade is achieved and soils are prepared to take advantage of soil moisture and seed germination. The SWMP Administrator should evaluate the short and long-term forecasts prior to applying permanent seed. Final site stabilization is achieved when vegetative cover provides permanent stabilization with a density greater than 70 percent of the pre-disturbance levels, or equivalent permanent, physical erosion reduction methods have been employed over the entire area to be stabilized by vegetative cover. This area is exclusive of areas that are covered with rock (crushed granite, gravel, etc.) or landscape mulch, paved or have a building or other permanent structure on them. 25 Heritage Park Apartments │SWMP REPORT APPENDIX 25 Heritage Park Apartments │SWMP REPORT APPENDIX HERITAGE PARK APARTMENTS │SWMP REPORT APPENDIX A – SITE SPECIFIC REPORTS United States Department of Agriculture A product of the National Cooperative Soil Survey, a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local participants Custom Soil Resource Report for Larimer County Area, ColoradoNatural Resources Conservation Service March 15, 2022 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................................................................................................................9 Legend................................................................................................................10 Map Unit Legend................................................................................................11 Map Unit Descriptions.........................................................................................11 Larimer County Area, Colorado......................................................................13 3—Altvan-Satanta loams, 0 to 3 percent slopes.........................................13 4—Altvan-Satanta loams, 3 to 9 percent slopes.........................................15 22—Caruso clay loam, 0 to 1 percent slope...............................................17 References............................................................................................................19 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 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 Custom Soil Resource Report 6 identified each as a specific map unit. Aerial photographs show trees, buildings, fields, roads, and rivers, all of which help in locating boundaries accurately. Custom Soil Resource Report 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 9 Custom Soil Resource Report Soil Map 449028044903304490380449043044904804490530449058044906304490680449028044903304490380449043044904804490530449058044906304490680491570 491620 491670 491720 491770 491820 491870 491570 491620 491670 491720 491770 491820 491870 40° 34' 1'' N 105° 5' 59'' W40° 34' 1'' N105° 5' 45'' W40° 33' 46'' N 105° 5' 59'' W40° 33' 46'' N 105° 5' 45'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84 0 100 200 400 600 Feet 0 30 60 120 180 Meters Map Scale: 1:2,180 if printed on A portrait (8.5" x 11") sheet. Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Larimer County Area, Colorado Survey Area Data: Version 16, Sep 2, 2021 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Aug 11, 2018—Aug 12, 2018 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Custom Soil Resource Report 10 Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 3 Altvan-Satanta loams, 0 to 3 percent slopes 8.9 51.0% 4 Altvan-Satanta loams, 3 to 9 percent slopes 7.6 43.3% 22 Caruso clay loam, 0 to 1 percent slope 1.0 5.7% Totals for Area of Interest 17.5 100.0% Map Unit Descriptions 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 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 Custom Soil Resource Report 11 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. Custom Soil Resource Report 12 Larimer County Area, Colorado 3—Altvan-Satanta loams, 0 to 3 percent slopes Map Unit Setting National map unit symbol: jpw2 Elevation: 5,200 to 6,200 feet Mean annual precipitation: 13 to 15 inches Mean annual air temperature: 48 to 50 degrees F Frost-free period: 135 to 150 days Farmland classification: Prime farmland if irrigated Map Unit Composition Altvan and similar soils:45 percent Satanta and similar soils:30 percent Minor components:25 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Altvan Setting Landform:Terraces, benches Landform position (three-dimensional):Side slope, tread Down-slope shape:Linear Across-slope shape:Linear Parent material:Mixed alluvium Typical profile H1 - 0 to 10 inches: loam H2 - 10 to 18 inches: clay loam H3 - 18 to 30 inches: loam H4 - 30 to 60 inches: gravelly sand Properties and qualities Slope:0 to 3 percent Depth to restrictive feature:More than 80 inches Drainage class:Well drained Runoff class: Low Capacity of the most limiting layer to transmit water (Ksat):Moderately high to high (0.60 to 2.00 in/hr) Depth to water table:More than 80 inches Frequency of flooding:None Frequency of ponding:None Calcium carbonate, maximum content:10 percent Available water supply, 0 to 60 inches: Low (about 5.4 inches) Interpretive groups Land capability classification (irrigated): 3e Land capability classification (nonirrigated): 3e Hydrologic Soil Group: B Ecological site: R067BY002CO - Loamy Plains Hydric soil rating: No Custom Soil Resource Report 13 Description of Satanta Setting Landform:Structural benches, terraces Landform position (three-dimensional):Side slope, tread Down-slope shape:Linear Across-slope shape:Linear Parent material:Mixed alluvium and/or eolian deposits Typical profile H1 - 0 to 9 inches: loam H2 - 9 to 18 inches: loam H3 - 18 to 60 inches: loam Properties and qualities Slope:0 to 1 percent Depth to restrictive feature:More than 80 inches Drainage class:Well drained Runoff class: Low Capacity of the most limiting layer to transmit water (Ksat):Moderately high to high (0.60 to 2.00 in/hr) Depth to water table:More than 80 inches Frequency of flooding:None Frequency of ponding:None Calcium carbonate, maximum content:10 percent Available water supply, 0 to 60 inches: High (about 10.1 inches) Interpretive groups Land capability classification (irrigated): 1 Land capability classification (nonirrigated): 3c Hydrologic Soil Group: B Ecological site: R067BY002CO - Loamy Plains Hydric soil rating: No Minor Components Nunn Percent of map unit:10 percent Ecological site:R067BZ902CO - Loamy Plains Hydric soil rating: No Larim Percent of map unit:10 percent Ecological site:R067BY063CO - Gravel Breaks Hydric soil rating: No Stoneham Percent of map unit:5 percent Ecological site:R067BZ902CO - Loamy Plains Hydric soil rating: No Custom Soil Resource Report 14 4—Altvan-Satanta loams, 3 to 9 percent slopes Map Unit Setting National map unit symbol: jpwf Elevation: 5,200 to 6,200 feet Mean annual precipitation: 13 to 15 inches Mean annual air temperature: 48 to 50 degrees F Frost-free period: 135 to 150 days Farmland classification: Farmland of statewide importance Map Unit Composition Altvan and similar soils:55 percent Satanta and similar soils:35 percent Minor components:10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Altvan Setting Landform:Terraces, benches, fans Landform position (three-dimensional):Side slope, base slope, tread Down-slope shape:Linear Across-slope shape:Linear Parent material:Mixed alluvium Typical profile H1 - 0 to 9 inches: loam H2 - 9 to 16 inches: clay loam H3 - 16 to 31 inches: loam H4 - 31 to 60 inches: gravelly sand Properties and qualities Slope:6 to 9 percent Depth to restrictive feature:More than 80 inches Drainage class:Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat):Moderately high to high (0.60 to 2.00 in/hr) Depth to water table:More than 80 inches Frequency of flooding:None Frequency of ponding:None Calcium carbonate, maximum content:10 percent Available water supply, 0 to 60 inches: Low (about 5.5 inches) Interpretive groups Land capability classification (irrigated): 4e Land capability classification (nonirrigated): 4e Hydrologic Soil Group: B Ecological site: R067BY008CO - Loamy Slopes Custom Soil Resource Report 15 Hydric soil rating: No Description of Satanta Setting Landform:Terraces, structural benches Landform position (three-dimensional):Side slope, tread Down-slope shape:Linear Across-slope shape:Linear Parent material:Mixed alluvium and/or eolian deposits Typical profile H1 - 0 to 9 inches: loam H2 - 9 to 14 inches: loam H3 - 14 to 60 inches: loam Properties and qualities Slope:3 to 6 percent Depth to restrictive feature:More than 80 inches Drainage class:Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat):Moderately high to high (0.60 to 2.00 in/hr) Depth to water table:More than 80 inches Frequency of flooding:None Frequency of ponding:None Calcium carbonate, maximum content:10 percent Available water supply, 0 to 60 inches: High (about 10.1 inches) Interpretive groups Land capability classification (irrigated): 2e Land capability classification (nonirrigated): 3e Hydrologic Soil Group: B Ecological site: R067BZ902CO - Loamy Plains Hydric soil rating: No Minor Components Nunn Percent of map unit:6 percent Ecological site:R067BZ902CO - Loamy Plains Hydric soil rating: No Larimer Percent of map unit:4 percent Ecological site:R067BZ902CO - Loamy Plains Hydric soil rating: No Custom Soil Resource Report 16 22—Caruso clay loam, 0 to 1 percent slope Map Unit Setting National map unit symbol: jpvt Elevation: 4,800 to 5,500 feet Mean annual precipitation: 13 to 15 inches Mean annual air temperature: 48 to 50 degrees F Frost-free period: 135 to 150 days Farmland classification: Prime farmland if irrigated Map Unit Composition Caruso and similar soils:85 percent Minor components:15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Caruso Setting Landform:Flood-plain steps, stream terraces Landform position (three-dimensional):Tread Down-slope shape:Linear Across-slope shape:Linear Parent material:Mixed alluvium Typical profile H1 - 0 to 35 inches: clay loam H2 - 35 to 44 inches: fine sandy loam H3 - 44 to 60 inches: gravelly sand Properties and qualities Slope:0 to 1 percent Depth to restrictive feature:More than 80 inches Drainage class:Somewhat poorly 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:About 24 to 48 inches Frequency of flooding:NoneOccasional Frequency of ponding:None Calcium carbonate, maximum content:5 percent Maximum salinity:Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) Available water supply, 0 to 60 inches: Moderate (about 8.4 inches) Interpretive groups Land capability classification (irrigated): 3w Land capability classification (nonirrigated): 5w Hydrologic Soil Group: D Ecological site: R067BY036CO - Overflow Hydric soil rating: No Custom Soil Resource Report 17 Minor Components Loveland Percent of map unit:9 percent Landform:Terraces Ecological site:R067BY036CO - Overflow Hydric soil rating: Yes Fluvaquents Percent of map unit:6 percent Landform:Terraces Hydric soil rating: Yes Custom Soil Resource Report 18 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 19 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 Custom Soil Resource Report 20 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 1/16 IPaC resource list This report is an automatically generated list of species and other resources such as critical habitat (collectively referred to as trust resources) under the U.S. Fish and Wildlife Service's (USFWS) jurisdiction that are known or expected to be on or near the project area referenced below. The list may also include trust resources that occur outside of the project area, but that could potentially be directly or indirectly a ected by activities in the project area. However, determining the likelihood and extent of e ects a project may have on trust resources typically requires gathering additional site-speci c (e.g., vegetation/species surveys) and project-speci c (e.g., magnitude and timing of proposed activities) information. Below is a summary of the project information you provided and contact information for the USFWS o ce(s) with jurisdiction in the de ned project area. Please read the introduction to each section that follows (Endangered Species, Migratory Birds, USFWS Facilities, and NWI Wetlands) for additional information applicable to the trust resources addressed in that section. Location Larimer County, Colorado U.S. Fish & Wildlife ServiceIPaC 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 2/16 Local o ce Colorado Ecological Services Field O ce (303) 236-4773 (303) 236-4005 MAILING ADDRESS Denver Federal Center P.O. Box 25486 Denver, CO 80225-0486 PHYSICAL ADDRESS 134 Union Boulevard, Suite 670 Lakewood, CO 80228-1807 https:/ / www.fws.gov/ o ce/ colorado-ecological-services- eld-o ce 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 3/16 Endangered species This resource list is for informational purposes only and does not constitute an analysis of project level impacts. The primary information used to generate this list is the known or expected range of each species. Additional areas of in uence (AOI) for species are also considered. An AOI includes areas outside of the species range if the species could be indirectly a ected by activities in that area (e.g., placing a dam upstream of a sh population even if that sh does not occur at the dam site, may indirectly impact the species by reducing or eliminating water ow downstream). Because species can move, and site conditions can change, the species on this list are not guaranteed to be found on or near the project area. To fully determine any potential e ects to species, additional site-speci c and project-speci c information is often required. Section 7 of the Endangered Species Act requires Federal agencies to "request of the Secretary information whether any species which is listed or proposed to be listed may be present in the area of such proposed action" for any project that is conducted, permitted, funded, or licensed by any Federal agency. A letter from the local o ce and a species list which ful lls this requirement can only be obtained by requesting an o cial species list from either the Regulatory Review section in IPaC (see directions below) or from the local eld o ce directly. For project evaluations that require USFWS concurrence/review, please return to the IPaC website and request an o cial species list by doing the following: 1. Draw the project location and click CONTINUE. 2. Click DEFINE PROJECT. 3. Log in (if directed to do so). 4. Provide a name and description for your project. 5. Click REQUEST SPECIES LIST. Listed species and their critical habitats are managed by the Ecological Services Program of the U.S. Fish and Wildlife Service (USFWS) and the sheries division of the National Oceanic and Atmospheric Administration (NOAA Fisheries ). Species and critical habitats under the sole responsibility of NOAA Fisheries are not shown on this list. Please contact NOAA Fisheries for species under their jurisdiction. 1 2 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 4/16 1. Species listed under the Endangered Species Act are threatened or endangered; IPaC also shows species that are candidates, or proposed, for listing. See the listing status page for more information. IPaC only shows species that are regulated by USFWS (see FAQ). 2. NOAA Fisheries, also known as the National Marine Fisheries Service (NMFS), is an o ce of the National Oceanic and Atmospheric Administration within the Department of Commerce. The following species are potentially a ected by activities in this location: Mammals Birds NAME STATUS Gray Wolf Canis lupus There is nal critical habitat for this species. https://ecos.fws.gov/ecp/species/4488 Endangered Preble's Meadow Jumping Mouse Zapus hudsonius preblei Wherever found There is nal critical habitat for this species.Your location does not overlap the critical habitat. https://ecos.fws.gov/ecp/species/4090 Threatened NAME STATUS Eastern Black Rail Laterallus jamaicensis ssp. jamaicensis Wherever found No critical habitat has been designated for this species. https://ecos.fws.gov/ecp/species/10477 Threatened 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 5/16 Fishes Insects Piping Plover Charadrius melodus This species only needs to be considered if the following condition applies: Project includes water-related activities and/or use in the N. Platte, S. Platte, and Laramie River Basins which may a ect listed species in Nebraska. There is nal critical habitat for this species.Your location does not overlap the critical habitat. https://ecos.fws.gov/ecp/species/6039 Threatened Whooping Crane Grus americana There is nal critical habitat for this species.Your location does not overlap the critical habitat. https://ecos.fws.gov/ecp/species/758 Endangered NAME STATUS Greenback Cutthroat Trout Oncorhynchus clarkii stomias Wherever found No critical habitat has been designated for this species. https://ecos.fws.gov/ecp/species/2775 Threatened Pallid Sturgeon Scaphirhynchus albus Wherever found This species only needs to be considered if the following condition applies: Project includes water-related activities and/or use in the N. Platte, S. Platte, and Laramie River Basins which may a ect listed species in Nebraska. No critical habitat has been designated for this species. https://ecos.fws.gov/ecp/species/7162 Endangered NAME STATUS 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 6/16 Flowering Plants Critical habitats Potential e ects to critical habitat(s) in this location must be analyzed along with the endangered species themselves. There are no critical habitats at this location. Migratory birds Monarch Butter y Danaus plexippus Wherever found No critical habitat has been designated for this species. https://ecos.fws.gov/ecp/species/9743 Candidate NAME STATUS Ute Ladies'-tresses Spiranthes diluvialis Wherever found No critical habitat has been designated for this species. https://ecos.fws.gov/ecp/species/2159 Threatened Western Prairie Fringed Orchid Platanthera praeclara Wherever found No critical habitat has been designated for this species. https://ecos.fws.gov/ecp/species/1669 Threatened Certain birds are protected under the Migratory Bird Treaty Act and the Bald and Golden Eagle Protection Act .1 2 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 7/16 The birds listed below are birds of particular concern either because they occur on the USFWS Birds of Conservation Concern (BCC) list or warrant special attention in your project location. To learn more about the levels of concern for birds on your list and how this list is generated, see the FAQ below. This is not a list of every bird you may nd in this location, nor a guarantee that every bird on this list will be found in your project area. To see exact locations of where birders and the general public have sighted birds in and around your project area, visit the E-bird data mapping tool (Tip: enter your location, desired date range and a species on your list). For projects that occur o the Atlantic Coast, additional maps and models detailing the relative occurrence and abundance of bird species on your list are available. Links to additional information about Atlantic Coast birds, and other important information about your migratory bird list, including how to properly interpret and use your migratory bird report, can be found below. For guidance on when to schedule activities or implement avoidance and minimization measures to reduce impacts to migratory birds on your list, click on the PROBABILITY OF PRESENCE SUMMARY at the top of your list to see when these birds are most likely to be present and breeding in your project area. BREEDING SEASON Any person or organization who plans or conducts activities that may result in impacts to migratory birds, eagles, and their habitats should follow appropriate regulations and consider implementing appropriate conservation measures, as described below. 1. The Migratory Birds Treaty Act of 1918. 2. The Bald and Golden Eagle Protection Act of 1940. Additional information can be found using the following links: Birds of Conservation Concern https://www.fws.gov/program/migratory-birds/species Measures for avoiding and minimizing impacts to birds https://www.fws.gov/library/collections/avoiding-and-minimizing- incidental-take-migratory-birds Nationwide conservation measures for birds https://www.fws.gov/sites/default/ les/documents/nationwide-standard- conservation-measures.pdf NAME Bald Eagle Haliaeetus leucocephalus This is not a Bird of Conservation Concern (BCC) in this area, but warrants attention because of the Eagle Act or for potential susceptibilities in o shore areas from certain types of development or activities. Breeds Oct 15 to Jul 31 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 8/16 Chestnut-collared Longspur Calcarius ornatus This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. Breeds May 1 to Aug 10 Chimney Swift Chaetura pelagica This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. Breeds Mar 15 to Aug 25 Clark's Grebe Aechmophorus clarkii This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. Breeds Jun 1 to Aug 31 Ferruginous Hawk Buteo regalis This is a Bird of Conservation Concern (BCC) only in particular Bird Conservation Regions (BCRs) in the continental USA https://ecos.fws.gov/ecp/species/6038 Breeds Mar 15 to Aug 15 Lesser Yellowlegs Tringa avipes This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. https://ecos.fws.gov/ecp/species/9679 Breeds elsewhere Lewis's Woodpecker Melanerpes lewis This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. https://ecos.fws.gov/ecp/species/9408 Breeds Apr 20 to Sep 30 Long-billed Curlew Numenius americanus This is a Bird of Conservation Concern (BCC) only in particular Bird Conservation Regions (BCRs) in the continental USA https://ecos.fws.gov/ecp/species/5511 Breeds Apr 1 to Jul 31 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 9/16 Probability of Presence Summary The graphs below provide our best understanding of when birds of concern are most likely to be present in your project area. This information can be used to tailor and schedule your project activities to avoid or minimize impacts to birds. Please make sure you read and understand the FAQ "Proper Interpretation and Use of Your Migratory Bird Report" before using or attempting to interpret this report. Probability of Presence () Each green bar represents the bird's relative probability of presence in the 10km grid cell(s) your project overlaps during a particular week of the year. (A year is represented as 12 4-week months.) A taller bar indicates a higher probability of species presence. The survey e ort (see below) can be used to establish a level of con dence in the presence score. One can have higher con dence in the presence score if the corresponding survey e ort is also high. How is the probability of presence score calculated? The calculation is done in three steps: 1. The probability of presence for each week is calculated as the number of survey events in the week where the species was detected divided by the total number of survey events for that week. For example, if in week 12 there were 20 survey events and the Spotted Towhee was found in 5 of them, the probability of presence of the Spotted Towhee in week 12 is 0.25. Long-eared Owl asio otus This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. https://ecos.fws.gov/ecp/species/3631 Breeds Mar 1 to Jul 15 Pinyon Jay Gymnorhinus cyanocephalus This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. https://ecos.fws.gov/ecp/species/9420 Breeds Feb 15 to Jul 15 Red-headed Woodpecker Melanerpes erythrocephalus This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. Breeds May 10 to Sep 10 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 10/16 no data survey e ort breeding season probability of presence 2. To properly present the pattern of presence across the year, the relative probability of presence is calculated. This is the probability of presence divided by the maximum probability of presence across all weeks. For example, imagine the probability of presence in week 20 for the Spotted Towhee is 0.05, and that the probability of presence at week 12 (0.25) is the maximum of any week of the year. The relative probability of presence on week 12 is 0.25/0.25 = 1; at week 20 it is 0.05/0.25 = 0.2. 3. The relative probability of presence calculated in the previous step undergoes a statistical conversion so that all possible values fall between 0 and 10, inclusive. This is the probability of presence score. To see a bar's probability of presence score, simply hover your mouse cursor over the bar. Breeding Season () Yellow bars denote a very liberal estimate of the time-frame inside which the bird breeds across its entire range. If there are no yellow bars shown for a bird, it does not breed in your project area. Survey E ort () Vertical black lines superimposed on probability of presence bars indicate the number of surveys performed for that species in the 10km grid cell(s) your project area overlaps. The number of surveys is expressed as a range, for example, 33 to 64 surveys. To see a bar's survey e ort range, simply hover your mouse cursor over the bar. No Data () A week is marked as having no data if there were no survey events for that week. Survey Timeframe Surveys from only the last 10 years are used in order to ensure delivery of currently relevant information. The exception to this is areas o the Atlantic coast, where bird returns are based on all years of available data, since data in these areas is currently much more sparse. SPECIES JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Bald Eagle Non-BCC Vulnerable 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 11/16 Chestnut-collared Longspur BCC Rangewide (CON) Chimney Swift BCC Rangewide (CON) Clark's Grebe BCC Rangewide (CON) Ferruginous Hawk BCC - BCR Lesser Yellowlegs BCC Rangewide (CON) Lewis's Woodpecker BCC Rangewide (CON) Long-billed Curlew BCC - BCR Long-eared Owl BCC Rangewide (CON) Pinyon Jay BCC Rangewide (CON) Red-headed Woodpecker BCC Rangewide (CON) Tell me more about conservation measures I can implement to avoid or minimize impacts to migratory birds. Nationwide Conservation Measures describes measures that can help avoid and minimize impacts to all birds at any location year round. Implementation of these measures is particularly important when birds are most likely to occur in the project area. When birds may be breeding in the area, identifying the locations of any active nests and avoiding their destruction is a very helpful impact minimization measure. To see when birds are most likely to occur and be breeding in your project area, view the Probability of Presence Summary. Additional measures or permits may be advisable depending on the type of activity you are conducting and the type of infrastructure or bird species present on your project site. What does IPaC use to generate the list of migratory birds that potentially occur in my speci ed location? 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 12/16 The Migratory Bird Resource List is comprised of USFWS Birds of Conservation Concern (BCC)and other species that may warrant special attention in your project location. The migratory bird list generated for your project is derived from data provided by the Avian Knowledge Network (AKN). The AKN data is based on a growing collection of survey, banding, and citizen science datasets and is queried and ltered to return a list of those birds reported as occurring in the 10km grid cell(s) which your project intersects, and that have been identi ed as warranting special attention because they are a BCC species in that area, an eagle (Eagle Act requirements may apply), or a species that has a particular vulnerability to o shore activities or development. Again, the Migratory Bird Resource list includes only a subset of birds that may occur in your project area. It is not representative of all birds that may occur in your project area. To get a list of all birds potentially present in your project area, please visit the Rapid Avian Information Locator (RAIL) Tool. What does IPaC use to generate the probability of presence graphs for the migratory birds potentially occurring in my speci ed location? The probability of presence graphs associated with your migratory bird list are based on data provided by the Avian Knowledge Network (AKN). This data is derived from a growing collection of survey, banding, and citizen science datasets. Probability of presence data is continuously being updated as new and better information becomes available. To learn more about how the probability of presence graphs are produced and how to interpret them, go the Probability of Presence Summary and then click on the "Tell me about these graphs" link. How do I know if a bird is breeding, wintering or migrating in my area? To see what part of a particular bird's range your project area falls within (i.e. breeding, wintering, migrating or year-round), you may query your location using the RAIL Tool and look at the range maps provided for birds in your area at the bottom of the pro les provided for each bird in your results. If a bird on your migratory bird species list has a breeding season associated with it, if that bird does occur in your project area, there may be nests present at some point within the timeframe speci ed. If "Breeds elsewhere" is indicated, then the bird likely does not breed in your project area. What are the levels of concern for migratory birds? Migratory birds delivered through IPaC fall into the following distinct categories of concern: 1. "BCC Rangewide" birds are Birds of Conservation Concern (BCC) that are of concern throughout their range anywhere within the USA (including Hawaii, the Paci c Islands, Puerto Rico, and the Virgin Islands); 2. "BCC - BCR" birds are BCCs that are of concern only in particular Bird Conservation Regions (BCRs) in the continental USA; and 3. "Non-BCC - Vulnerable" birds are not BCC species in your project area, but appear on your list either because of the Eagle Act requirements (for eagles) or (for non-eagles) potential susceptibilities in o shore areas from certain types of development or activities (e.g. o shore 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 13/16 energy development or longline shing). Although it is important to try to avoid and minimize impacts to all birds, e orts should be made, in particular, to avoid and minimize impacts to the birds on this list, especially eagles and BCC species of rangewide concern. For more information on conservation measures you can implement to help avoid and minimize migratory bird impacts and requirements for eagles, please see the FAQs for these topics. Details about birds that are potentially a ected by o shore projects For additional details about the relative occurrence and abundance of both individual bird species and groups of bird species within your project area o the Atlantic Coast, please visit the Northeast Ocean Data Portal. The Portal also o ers data and information about other taxa besides birds that may be helpful to you in your project review. Alternately, you may download the bird model results les underlying the portal maps through the NOAA NCCOS Integrative Statistical Modeling and Predictive Mapping of Marine Bird Distributions and Abundance on the Atlantic Outer Continental Shelf project webpage. Bird tracking data can also provide additional details about occurrence and habitat use throughout the year, including migration. Models relying on survey data may not include this information. For additional information on marine bird tracking data, see the Diving Bird Study and the nanotag studies or contact Caleb Spiegel or Pam Loring. What if I have eagles on my list? If your project has the potential to disturb or kill eagles, you may need to obtain a permit to avoid violating the Eagle Act should such impacts occur. Proper Interpretation and Use of Your Migratory Bird Report The migratory bird list generated is not a list of all birds in your project area, only a subset of birds of priority concern. To learn more about how your list is generated, and see options for identifying what other birds may be in your project area, please see the FAQ "What does IPaC use to generate the migratory birds potentially occurring in my speci ed location". Please be aware this report provides the "probability of presence" of birds within the 10 km grid cell(s) that overlap your project; not your exact project footprint. On the graphs provided, please also look carefully at the survey e ort (indicated by the black vertical bar) and for the existence of the "no data" indicator (a red horizontal bar). A high survey e ort is the key component. If the survey e ort is high, then the probability of presence score can be viewed as more dependable. In contrast, a low survey e ort bar or no data bar means a lack of data and, therefore, a lack of certainty about presence of the species. This list is not perfect; it is simply a starting point for identifying what birds of concern have the potential to be in your project area, when they might be there, and if they might be breeding (which means nests might be present). The list helps you know what to look for to con rm presence, and helps guide you in knowing when to implement conservation measures to avoid or minimize potential impacts from your project activities, should presence be con rmed. To learn more about conservation measures, visit the FAQ "Tell me about conservation measures I can implement to avoid or minimize impacts to migratory birds" at the bottom of your migratory bird trust resources page. 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 14/16 Coastal Barrier Resources System Projects within the John H. Chafee Coastal Barrier Resources System (CBRS) may be subject to the restrictions on federal expenditures and nancial assistance and the consultation requirements of the Coastal Barrier Resources Act (CBRA) (16 U.S.C. 3501 et seq.). For more information, please contact the local Ecological Services Field O ce or visit the CBRA Consultations website. The CBRA website provides tools such as a ow chart to help determine whether consultation is required and a template to facilitate the consultation process. There are no known coastal barriers at this location. Data limitations The CBRS boundaries used in IPaC are representations of the controlling boundaries, which are depicted on the o cial CBRS maps. The boundaries depicted in this layer are not to be considered authoritative for in/out determinations close to a CBRS boundary (i.e., within the "CBRS Bu er Zone" that appears as a hatched area on either side of the boundary). For projects that are very close to a CBRS boundary but do not clearly intersect a unit, you may contact the Service for an o cial determination by following the instructions here: https://www.fws.gov/service/coastal-barrier-resources-system-property-documentation Data exclusions CBRS units extend seaward out to either the 20- or 30-foot bathymetric contour (depending on the location of the unit). The true seaward extent of the units is not shown in the CBRS data, therefore projects in the o shore areas of units (e.g., dredging, breakwaters, o shore wind energy or oil and gas projects) may be subject to CBRA even if they do not intersect the CBRS data. For additional information, please contact CBRA@fws.gov. Facilities National Wildlife Refuge lands 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 15/16 Any activity proposed on lands managed by the National Wildlife Refuge system must undergo a 'Compatibility Determination' conducted by the Refuge. Please contact the individual Refuges to discuss any questions or concerns. There are no refuge lands at this location. Fish hatcheries There are no sh hatcheries at this location. Wetlands in the National Wetlands Inventory (NWI) Impacts to NWI wetlands and other aquatic habitats may be subject to regulation under Section 404 of the Clean Water Act, or other State/Federal statutes. For more information please contact the Regulatory Program of the local U.S. Army Corps of Engineers District. Please note that the NWI data being shown may be out of date. We are currently working to update our NWI data set. We recommend you verify these results with a site visit to determine the actual extent of wetlands on site. This location overlaps the following wetlands: FRESHWATER EMERGENT WETLAND Palustrine RIVERINE Riverine A full description for each wetland code can be found at the National Wetlands Inventory website 10/27/22, 9:59 AM IPaC: Explore Location resources https://ipac.ecosphere.fws.gov/location/FSIW6Y7RRVFGZGSEAT6TPOUH2A/resources 16/16 NOTE: This initial screening does not replace an on-site delineation to determine whether wetlands occur. Additional information on the NWI data is provided below. Data limitations The Service's objective of mapping wetlands and deepwater habitats is to produce reconnaissance level information on the location, type and size of these resources. The maps are prepared from the analysis of high altitude imagery. Wetlands are identi ed based on vegetation, visible hydrology and geography. A margin of error is inherent in the use of imagery; thus, detailed on-the-ground inspection of any particular site may result in revision of the wetland boundaries or classi cation established through image analysis. The accuracy of image interpretation depends on the quality of the imagery, the experience of the image analysts, the amount and quality of the collateral data and the amount of ground truth veri cation work conducted. Metadata should be consulted to determine the date of the source imagery used and any mapping problems. Wetlands or other mapped features may have changed since the date of the imagery or eld work. There may be occasional di erences in polygon boundaries or classi cations between the information depicted on the map and the actual conditions on site. Data exclusions Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and nearshore coastal waters. Some deepwater reef communities (coral or tuber cid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. Data precautions Federal, state, and local regulatory agencies with jurisdiction over wetlands may de ne and describe wetlands in a di erent manner than that used in this inventory. There is no attempt, in either the design or products of this inventory, to de ne the limits of proprietary jurisdiction of any Federal, state, or local government or to establish the geographical scope of the regulatory programs of government agencies. Persons intending to engage in activities involving modi cations within or adjacent to wetland areas should seek the advice of appropriate federal, state, or local agencies concerning speci ed agency regulatory programs and proprietary jurisdictions that may a ect such activities. HERITAGE PARK APARTMENTS │SWMP REPORT APPENDIX B – EROSION CONTROL PLANS AND DETAILS HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTIONOVERALL INITIAL EROSION CONTROL PLAN6.0NORTH LEGEND INSET A SCALE: 1"=40' HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTIONINITIAL EROSION CONTROL PLAN6.1NORTH LEGEND EROSION CONTROL NOTES HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 6.2NORTH INITIAL EROSION CONTROL PLANLEGEND EROSION CONTROL NOTES HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 6.3NORTH INITIAL EROSION CONTROL PLANLEGEND EROSION CONTROL NOTES HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 6.4NORTH INITIAL EROSION CONTROL PLANLEGEND EROSION CONTROL NOTES HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 6.5NORTH INITIAL EROSION CONTROL PLANLEGEND EROSION CONTROL NOTES HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 6.6NORTH INITIAL EROSION CONTROL PLANLEGEND EROSION CONTROL NOTES R Know what's below. Call before you dig.HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTIONFINAL EROSION CONTROL PLAN6.7NORTH INSET A SCALE: 1"=40' LEGEND R Know what's below. Call before you dig.HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTIONFINAL EROSION CONTROL PLAN6.8NORTH LEGEND EROSION CONTROL NOTES R Know what's below. Call before you dig.HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 6.9NORTH FINAL EROSION CONTROL PLANLEGEND EROSION CONTROL NOTES R Know what's below. Call before you dig.HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 6.10NORTH FINAL EROSION CONTROL PLANLEGEND EROSION CONTROL NOTES R Know what's below. Call before you dig.HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 6.11NORTH FINAL EROSION CONTROL PLANEROSION CONTROL NOTES LEGEND R Know what's below. Call before you dig.HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 6.12NORTH FINAL EROSION CONTROL PLANLEGEND EROSION CONTROL NOTES R Know what's below. Call before you dig.HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 6.13NORTH FINAL EROSION CONTROL PLANEROSION CONTROL NOTES LEGEND HERITAGE PARK APARTMENTS │SWMP REPORT APPENDIX C – PERMIT INFORMATION HERITAGE PARK APARTMENTS │SWMP REPORT APPENDIX D – EXAMPLE LOGS BMP Corrective Action Log Date Identified Inspector Description of BMP Deficiency Corrective Action Taken Date Completed Control Measure Corrective Action Log Description of Control Measure Deficiency Land Disturbance / BMP Installation / Stabilization Log Date Initiated Description of Activity Date Ceased Identification of BMP / Stabilization Method Date Implemented Date Removed Land Disturbance / Control Measure Installation / Stabilization Log Identification of Control Measure / Stabilization Method Outdoor Storage of Materials Log Identification of Pollutant Date Onsite Date Removed Containment Method Vehicle Equipment Maintenance and Fueling Log Identification of Pollutant Date Onsite Date Removed Containment Method Routine Maintenance Log Identification of Pollutant Date Onsite Date Removed Containment Method Onsite Waste Management Log Identification of Pollutant Date Onsite Date Removed Containment Method Non-Industrial Waste Sources Log Identification of Pollutant Date Onsite Date Removed Containment Method Additional Pollutant Sources Log Identification of Pollutant Date Onsite Date Removed Containment Method CONSTRUCTION STORMWATER SITE INSPECTION REPORT Facility Name Permittee Date of Inspection Weather Conditions Permit Certification # Disturbed Acreage Phase of Construction Inspector Title Inspector Name Is the above inspector a qualified stormwater manager? (permittee is responsible for ensuring that the inspector is a qualified stormwater manager) YES NO INSPECTION FREQUENCY Check the box that describes the minimum inspection frequency utilized when conducting each inspection At least one inspection every 7 calendar days At least one inspection every 14 calendar days, with post-storm event inspections conducted within 24 hours after the end of any precipitation or snowmelt event that causes surface erosions • This is this a post-storm event inspection. Event Date: _____________________ Reduced inspection frequency - Include site conditions that warrant reduced inspection frequency • Post-storm inspections at temporarily idle sites • Inspections at completed sites/area • Winter conditions exclusion Have there been any deviations from the minimum inspection schedule? If yes, describe below. YES NO INSPECTION REQUIREMENTS* i. Visually verify all implemented control measures are in effective operational condition and are working as designed in the specifications ii. Determine if there are new potential sources of pollutants iii. Assess the adequacy of control measures at the site to identify areas requiring new or modified control measures to minimize pollutant discharges iv. Identify all areas of non-compliance with the permit requirements, and if necessary, implement corrective action *Use the attached Control Measures Requiring Routine Maintenance and Inadequate Control Measures Requiring Corrective Action forms to document results of this assessment that trigger either maintenance or corrective actions AREAS TO BE INSPECTED Is there evidence of, or the potential for, pollutants leaving the construction site boundaries, entering the stormwater drainage system or discharging to state waters at the following locations? NO YES If "YES” describe discharge or potential for discharge below. Document related maintenance, inadequate control measures and corrective actions Inadequate Control Measures Requiring Corrective Action form Construction site perimeter All disturbed areas Designated haul routes Material and waste storage areas exposed to precipitation Locations where stormwater has the potential to discharge offsite Locations where vehicles exit the site Other: ____________________ CONTROL MEASURES REQUIRING ROUTINE MAINTENANCE Definition: Any control measure that is still operating in accordance with its design and the requirements of the permit, but requires maintenance to prevent a breach of the control measure. These items are not subject to the corrective action requirements as specified in Part I.B.1.c of the permit. Are there control measures requiring maintenance? NO YES If “YES” document below Date Observed Location Control Measure Maintenance Required Date Completed INADEQUATE CONTROL MEASURES REQUIRING CORRECTIVE ACTION Definition: Any control measure that is not designed or implemented in accordance with the requirements of the permit and/or any control measure that is not implemented to operate in accordance with its design. This includes control measures that have not been implemented for pollutant sources. If it is infeasible to install or repair the control measure immediately after discovering the deficiency the reason must be documented and a schedule included to return the control measure to effective operating condition as possible. Are there inadequate control measures requiring corrective action? NO YES If “YES” document below Are there additional control measures needed that were not in place at the time of inspection? NO YES If “YES” document below Date Discovered Location Description of Inadequate Control Measure Description of Corrective Action Was deficiency corrected when discovered? YES/NO if “NO” provide reason and schedule to correct Date Corrected REPORTING REQUIREMENTS The permittee shall report the following circumstances orally within twenty-four (24) hours from the time the permittee becomes aware of the circumstances, and shall mail to the division a written report containing the information requested within five (5) working days after becoming aware of the following circumstances. The division may waive the written report required if the oral report has been received within 24 hours. All Noncompliance Requiring 24-Hour Notification per Part II.L.6 of the Permit a. Endangerment to Health or the Environment Circumstances leading to any noncompliance which may endanger health or the environment regardless of the cause of the incident (See Part II.L.6.a of the Permit) This category would primarily result from the discharge of pollutants in violation of the permit b. Numeric Effluent Limit Violations o Circumstances leading to any unanticipated bypass which exceeds any effluent limitations (See Part II.L.6.b of the Permit) o Circumstances leading to any upset which causes an exceedance of any effluent limitation (See Part II.L.6.c of the Permit) o Daily maximum violations (See Part II.L.6.d of the Permit) Numeric effluent limits are very uncommon in certifications under the COR400000 general permit. This category of noncompliance only applies if numeric effluent limits are included in a permit certification. Has there been an incident of noncompliance requiring 24-hour notification? NO YES If “YES” document below Date and Time of Incident Location Description of Noncompliance Description of Corrective Action Date and Time of 24 Hour Oral Notification Date of 5 Day Written Notification * *Attach copy of 5 day written notification to report. Indicate if written notification was waived, including the name of the division personnel who granted waiver. After adequate corrective action(s) and maintenance have been taken, or where a report does not identify any incidents requiring corrective action or maintenance, the individual(s) designated as the Qualified Stormwater Manager, shall sign and certify the below statement: “I verify that, to the best of my knowledge and belief, all corrective action and maintenance items identified during the inspection are complete, and the site is currently in compliance with the permit.” ______________________________________ _______________________________________ Name of Qualified Stormwater Manager Title of Qualified Stormwater Manager ______________________________________ _______________________________________ Signature of Qualified Stormwater Manager Date Notes/Comments Control Measure Name Description Implementation Installation Procedures Inspection Expectations Describe the control measure and what pollutant sources it will provide effective treatment for (part I.C.2.a.iv of the permit). Include the mechanism used for treatment of the pollutant source. Describe how the control measure will be implemented in accordance with good engineering, hydrologic and pollution control practices. Include the phase(s) of construction the control measure will be implemented for. Describe the process required to install the control measure and have it adequately treat the intended pollutant source. Include specific depths, lengths, materials, and any other applicable information necessary to properly install the control measure. Describe how often the control measure will be inspected and what key features should be checked during each inspection (is the silt fence tail entrenched, are the straw wattles staked ever 4 feet, etc.) Control Measure Name Maintenance Requirements Control Measure Diagram Describe maintenance requirements, such as how to repair damaged sections, what qualifies as a failed control measure and when it needs to be replaced. Also include criteria that would trigger maintenance (i.e. 50% capacity of the control measure has been reached). HERITAGE PARK APARTMENTS │SWMP REPORT APPENDIX E – SPILL REPORTING Five day reporting form Incident / spill / sanitary sewer overflow release Use this form to report i ncidents impacting waters of the state The Water Quality Control Division distinguishes between reporting requirements for incidents that occur at entities operating under a Colorado Discharge Permit System (CDPS) permit and those resulting from non-permitted activities. Permitted activities - Reporting and management of non-compliance incidents and spills that occur as a result of permitted activities should be performed in accordance with the specific requirements in the notifications section of your permit. You may use this form to submit the information requested in the permit. Non-permitted activities - In the case of an activity where a permit does not address reporting of, or response to, a given spill please submit a written summary of the event, your response, and clean up efforts to the division within five working days of the date of the event. This form is provided for your convenience. If you have any questions please contact the division’s field s ervices staff person assigned to your spill case. Prior to the five working day deadline you may request an extension to submit the report if needed for sampling analysis or other reasons. To request an extensi on please send an email to the division’s field s ervices staff person assigned to your spill cas e or to the spill administrator. The field services contact list is available at: www.colorado.gov/cdphe/wq-inspection-services-contact-us. Please send the completed form or report with signature to the division’s field services spill administrator: Michelle Thiebaud 222 S. Sixth Street, 232 Grand Junction, CO 81501 Telephone: 970-248-7150 Fax: 970-248-7198 Email: michelle.thiebaud@state.co.us 1. Incident background information Incident/spill number (division provided) Date of event County Type of incident / s pill / SSO (check one) ☐ Sanitary sewer overflow ☐ Potable water /reuse water / reclaimed water ☐ Biosolids ☐ W astewater treatment plant bypass or upset (authorized outfall point) ☐ Petroleum product ☐ Oil or gas field production s pill ☐ W astewater t r eatment plant spill or overflow (other than outfall) ☐ Chemical ☐ Other Estimated v olume r eleased Size and depth of area affected Contact information Potentially responsible party contact name Potentially r esponsible party company/agency name CDPHE Permit number and facility name (if applicable) Email a ddress Phone 2. Incident information: Please provide the following information. A. Describe incident including source, cause, and location (e.g. address, latitude/longitude). B. Material released, e.g. untreated wastewater, specific chemical or produc t , biosolids . Please attach the OSHA Material Safety Data Sheets for any and all chemicals or products in spill or release. Revised November 2017 C. Actual or estimated duration of the event and time spill was fully controlled/stopped. If release is still occurring, the date and time the release is expected to be stopped. D. Describe measures taken or planned to contain, reduce, and clean up spill or release. E. Describe s teps taken or planned to prevent reoccurrence. 3. Incident impact to state w aters (As defined in § 25-8-103(19), C.R.S.). Examples of state waters include: stormwater conveyances (when they discharge to surface water), perennial streams, intermittent or ephemeral gulches, ditches, ponds, lakes, reservoi rs, irrigation canals, wetlands and groundwater. A. Did flow or materials reach surface water of the s tate? If so, identify the water body or bodies and describe the path of flow. W hat quantity of material reached the surface waters and what was the resulting impact? B. Did flow or materials reach groundwater of the s tate? If so, identify the water body or bodies and describe the path of flow. If yes, what quantity of material reached the ground or groundwater and what was the resulting impact? C. Did the incident include any of the following? If so, please include additional details below. ☐ Chemical r elease ☐ Fish k ill ☐ Sheen on water D. Were any water quality samples or other samples taken? If so, please describe sampling process , sampling location(s) in relationship to the incident, i.e. up/down stream and attach results. 4. Incident impact to areas or water u sers A. Describe the potential impact of the incident /spill/SSO to public use areas or downstream water users. This includes parks and swim beaches or public water s ystem sources and irrigation diversions . B. W ere the impacted area users and downstream water users notified and describe the method of notification , e.g. signs posted, via phone. C. List any downstream users who were notified. I hereby certify that the information presented above is accurate and complete. Signature Name and title Company, o rganization Date HERITAGE PARK APARTMENTS │SWMP REPORT APPENDIX F – CONTROL MEASURE DETAILS R Know what's below. Call before you dig.HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 6.14 EROSION CONTROL DETAILS R Know what's below. Call before you dig.HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 6.15 EROSION CONTROL DETAILS R Know what's below. Call before you dig.HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 6.16 EROSION CONTROL DETAILS R Know what's below. Call before you dig.HERITAGE PARK APARTMENTSFORT COLLINS, COLORADOMAJOR AMENDMENTCONSTRUCTION DOCUMENTS©FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 6.17 EROSION CONTROL DETAILSSWMP INFORMATION HERITAGE PARK APARTMENTS │SWMP REPORT APPENDIX G – FLOODING SOLUTIONS MAP HERITAGE PARK APARTMENTS │SWMP REPORT APPENDIX H – SEDIMENT BASIN SIZING DETAILS Sediment Basin Volume Calculations 3801 Automation Way, Suite 210 Fort Collins, CO 80525 Project:Heritage Park Apartments Prepared By:CJM Project Number:096277019 Checked By:JPW Date:11/02/22 PRISMOIDAL METHOD Volume Required = Tributary Area (acres) X 3600 (cu. Ft. /acre) Prismoidal Calculation Method = (1/3)*(ELEV1-ELEV2)*(AREA1+AREA2)+(SQRT(AREA1*AREA2)) Pond Volume Summary Tributary Area =10.19 acre Volume Required =36684 cubic feet (CF) Volume Required =0.84 acre-ft 5014.00 123 0 0 0.00 5014.50 3,082 637 637 0.01 5015.00 9,299 2,956 3,592 0.08 5015.50 14,015 5,788 9,381 0.22 5016.00 15,114 7,280 16,661 0.38 5016.50 16,095 7,801 24,462 0.56 5017.00 17,095 8,296 32,758 0.75 5017.50 18,106 8,799 41,557 0.95 5018.20 20,072 13,356 54,914 1.26 VOLUME (CF)VOLUME (AC-FT) Sediment Basin Volume 54914 1.26 Cumulative Volume (AC-FT) Cumulative Volume (CF) Incremental Volume (CF) Incremental Area (SQ-FT) Basin Increment (FT) SWMP - Sediment Basin - 11/2/2022