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Home My WebLink AboutWOODSPRING SUITES - FDP200004 - SUBMITTAL DOCUMENTS - ROUND 2 - STORMWATER MANAGEMENT PLANSTORMWATER MANAGEMENT PLAN (SWMP) REPORT Woodspring Suites Interchange Business Park Fort Collins, Colorado Prepared for: Tallgrass Fort Collins, LLC 250 N. Water, Suite 300 Wichita, KS 67202 Prepared by: Kimley-Horn and Associates, Inc. 4582 South Ulster Street, Suite 1500 Denver, Colorado 80237 Project #: 096813000 Prepared: March 18, 2020 WOODSPRING SUITES AT 847 SE Frontage Road STORMWATER MANAGEMENT PLAN (SWMP) REPORT JANUARY 24, 2020 Prepared By: WOODSPRING SUITES │ SWMP REPORT JANUARY 24, 2020 2 TABLE OF CONTENTS SWMP PREPARER CERTIFICATION ........................................................................................ 4 PERMITTEE / OPERATOR RESPONSIBILITIES ....................................................................... 5 OWNER/PERMITTEE CERTIFICATION ..................................................................................... 6 OPERATOR/PERMITTEE CERTIFICATION............................................................................... 6 SUBCONTRACTOR CERTIFICATION ....................................................................................... 7 SUBCONTRACTOR CERTIFICATION ............................................................................................ 7 SUBCONTRACTOR CERTIFICATION ............................................................................................ 7 SUBCONTRACTOR CERTIFICATION ............................................................................................ 7 GENERAL REQUIREMENTS ..................................................................................................... 8 INTRODUCTION AND PURPOSE .................................................................................................. 8 PERMIT COVERAGE AND APPLICATIONS .................................................................................. 8 DEFINITIONS .................................................................................................................................. 8 SITE DESCRIPTION................................................................................................................... 9 GENERAL PROJECT DESCRIPTION ............................................................................................ 9 PROJECT CONTACTS .................................................................................................................... 9 PROJECT LOCATION ................................................................................................................... 10 VICINITY MAP ............................................................................................................................... 10 HISTORICAL LAND USE............................................................................................................... 10 EXISTING SITE CONDITIONS ................................................................................................. 11 THREATENED AND ENDANGERED SPECIES ........................................................................... 11 WETLANDS ................................................................................................................................... 11 DRAINAGE CHARACTERISTICS ................................................................................................. 11 VEGETATION ................................................................................................................................ 12 SOILS 12 SITE AND DISTRUBED AREAS ................................................................................................... 12 RAINFALL DATA ........................................................................................................................... 12 RECEIVING WATERS ................................................................................................................... 13 PROPOSED SITE CONDITIONS.............................................................................................. 13 3 WOODSPRING SUITES │ SWMP REPORT MARCH 25, 2019 PROJECT DESCRIPTION ............................................................................................................. 13 TOPOGRAPHY AND DRAINAGE CHARACTERISTICS .............................................................. 13 PROPOSED CONSTRUCTION ACTIVITIES ............................................................................ 13 EROSION CONTROL PLAN REQUIREMENTS ....................................................................... 14 STORMWATER MANAGEMENT CONTROLS ......................................................................... 15 QUALIFIED STORMWATER MANAGER ...................................................................................... 15 SITE SPECIFIC POLLUTION SOURCES ..................................................................................... 15 IDENTIFICATION OF POLLUTANT SOURCES ........................................................................... 15 BEST MANAGEMENT PRACTICES FOR STORMWATER POLLUTION PREVENTION ........... 17 FINAL STABILIZATION AND LONG TERM STORMWATER MANAGEMENT ......................... 19 INSPECTION REQUIREMENTS............................................................................................... 19 INSPECTION SCHEDULE REQUIREMENTS .............................................................................. 19 INSPECTION PROCEDURES ....................................................................................................... 20 CONTROL MEASURE MAINTENANCE / REPLACEMENT AND FAILED CONOTROL MEASURESS ........................................................................................................................... 21 CONCLUSIONS ........................................................................................................................ 22 REFERENCES ......................................................................................................................... 23 APPENDIX ................................................................................................................................ 24 APPENDIX A – EROSION CONTROL PLANS APPENDIX B – PERMITS APPENDIX C – THREATENED AND ENDANGERED SPECIES APPENDIX D – SOILS INFORMATION APPENDIX E – IDENTIFICATION OF POLLUTANT SOURCES APPENDIX F – CONTROL MEASURE DETAILS APPENDIX G – LAND DISTURBANCE / CONTROL MEASURE / STABILIZATION LOG APPENDIX H – CDPHE ENVIRONMENTAL SPILL REPORTING APPENDIX I – SWMP INSPECTION REPORTS APPENDIX J – CONTROL MEASURE CORRECTIVE ACTION LOG APPENDIX K – SWMP AMENDMENT LOG WOODSPRING SUITES │ SWMP REPORT JANUARY 24, 2020 4 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. Erin Griffin, P.E., CPESC Colorado Registered PE # 42694 Project Design Engineer 5 WOODSPRING SUITES │ SWMP REPORT MARCH 25, 2019 PERMITTEE / OPERATOR RESPONSIBILITIES This Stormwater Management Plan (SWMP) is prepared for Tallgrass Hospitality, LLC (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 Woodspring Suites Project (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 WOODSPRING SUITES │ SWMP REPORT JANUARY 24, 2020 6 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: 7 WOODSPRING SUITES │ SWMP REPORT MARCH 25, 2019 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. WOODSPRING SUITES │ SWMP REPORT JANUARY 24, 2020 8 GENERAL REQUIREMENTS INTRODUCTION AND PURPOSE This SWMP is provided to support the approval of the Stormwater Management Plan and the issuance of any required stormwater permits with the City or CDPHE. This Report, in conjunction with the Stormwater Management Plan Construction Drawings, provides a site and project understanding along with guidelines for implementation and maintenance of erosion, sediment and stormwater quality control measures prior to and during construction of the Project. The primary goal of pollution prevention efforts during project construction is to control sediment and pollutants that originate on the site and prevent them from flowing to surface waters. The purpose of this SWMP is to provide guidelines for achieving that goal. A successful pollution prevention program also relies upon careful inspection and adjustments during the construction process in order to enhance its effectiveness. This SWMP must be implemented before construction begins on the site. It primarily addresses the impact of storm rainfall and runoff on areas of the ground surface disturbed during the construction process. In addition, there are recommendations for controlling other sources of pollution that could accompany the major construction activities. Applicability of this SWMP shall be terminated when disturbed areas are stabilized, permanent erosion controls are removed, construction activities covered herein have ceased. PERMIT COVERAGE AND APPLICATIONS Based upon a Site Disturbance Area of more than one (1) acre, this site will require approval by the City and stormwater coverage with the issuance of a Colorado Discharge Permit System (CDPS) - Stormwater Discharge Associated with Construction Activities Application (the General Permit) through the CDPHE. A copy of all applicable permits are included in Appendix B of this report. DEFINITIONS Operator – The group or individual that is responsible for day-to-day operations on the project site. The Operator will be assigned the SWMP Administrator role and these terms are used interchangeably in the SWMP. Site Developer – Tallgrass Hospitality, LLC SWMP – Construction Activities Stormwater Management Plan Qualified Stormwater Manager – The individual(s) knowledgeable in the principles and practices of erosion and sediment control and pollution prevention, and with the skills to assess conditions at construction sites that could impact stormwater quality and to assess the effectiveness of stormwater controls implemented. The activities and responsibilities of the Manager shall address all aspects of the facility’s SWMP. The Operator will be assigned the Qualified Stormwater Manager role and these terms are used interchangeably in the SWMP. 9 WOODSPRING SUITES │ SWMP REPORT MARCH 25, 2019 SITE DESCRIPTION GENERAL PROJECT DESCRIPTION This project will be developed on a platted tract located in the northwest quarter of Section 15, Township 7 North, Range 68 West of the 6th PM. The site is approximately 2.79 acres and does not contain any existing structures. The site is currently relatively flat with slopes ranging from 0.5% to 3%. The site is currently zoned C-G (General Commercial). The proposed land uses for this site will consist of a 4-story hotel building with surrounding surface parking. PROJECT CONTACTS SWMP PREPARER Company: Kimley-Horn and Associates, Inc. Contact: Erin Griffin, P.E., CPESC Address: 4582 South Ulster Street – Suite 1500 Denver, CO 80237 Phone: 303.228.2300 Email: erin.griffin@kimley-horn.com OWNER/PERMITTEE Company: Contact: Address: Phone: Email: OPERATOR/PERMITTEE Company: Contact: Address: Phone: Email: WOODSPRING SUITES │ SWMP REPORT JANUARY 24, 2020 10 PROJECT LOCATION The proposed 847 SE Frontage Road Project is located within the Northwest Quarter of Section 15, Township 7 North, Range 68 West of the Sixth Principal Meridian, City of Fort Collins, County of Larimer, Colorado. The site is bound by an existing Vehicle Emissions Testing Station to the northeast, I-25 to the northwest, and the frontage road to the south. • North: Interstate 25 (“I-25”) • East: Vehicle Emissions Testing Facility • South: Frontage Road • West: Interstate 25 (“I-25”) VICINITY MAP A vicinity map is provided below for reference: HISTORICAL LAND USE The Site is currently undeveloped. 11 WOODSPRING SUITES │ SWMP REPORT MARCH 25, 2019 EXISTING SITE CONDITIONS THREATENED AND ENDANGERED SPECIES In accordance with the US Department of the Interior Fish and Wildlife Service, Ecological Services, Colorado Field Offices list of Threatened, Endangered, Candidate and Proposed Species, printed May 2015, known threatened or endangered species for the Site are as follows: • Arapahoe Snowfly – Candidate • Canada Lynx – Threatened • Colorado Butterfly Plant – Threatened • Great Sage Grouse – Candidate • Greenback Cutthroat Trout – Threatened • Least Tern - Endangered • Mexican Spotted Owl – Threatened • North Park Phacelia – Endangered • Pallid Sturgeon – Endangered • Piping Plover - Threatened • Preble’s Meadow Jumping Mouse - Threatened • Ute Ladies’ – Tresses Orchid – Threatened • Western Prairie Fringed Orchid – Threatened • Whooping Crane – Endangered There are no known threatened or endangered species within the project area. The USFW Endangered Species Listing is included in Appendix C of this report. WETLANDS There are no known wetlands/wetlands channels within the project area. DRAINAGE CHARACTERISTICS The existing Site is relativity flat with slopes ranging from 0.5% to 3%. There are currently no existing on- site water quality or detention improvements. The majority of the site currently slopes to the southwest, conveying water into the frontage road. The site and surrounding area currently drain to a swale south of the Frontage Road conveyed into Boxelder Creek south of the swale. Once the Project takes over control of the Site, the existing topography is anticipated to be fairly flat and consist of the following: The majority of existing flows for this site are conveyed into an existing inlet at the northwest corner of the site which flows into a vegetated swale until it is intercepted by Spring Creek. Once the Project takes over control of the Site, the existing topography is anticipated to be fairly flat and consist of the following: • Highest Elevation: 4931 • Lowest Elevation: 4926 • Average Slopes: ±3% WOODSPRING SUITES │ SWMP REPORT JANUARY 24, 2020 12 VEGETATION Once the Project takes over control of the Site, the existing ground cover will consist of recently disturbed soils and possible temporary seeding. The composite imperviousness of the existing site approximately is 2%. SOILS The site is currently relativity flat with slopes ranging from 0.5% to 3%. The soil on the site is nunn clay loam classified as Hydrologic Soil Group C. The Whole Soil K Factor Erosion Index the Project is classified between 0.28 and 0.32. Values range from 0.02 to 0.69, with the higher value signifying that the soil is more susceptible to sheet and rill erosion by water. This value indicates that susceptibility for erosion by water is relatively moderate. The Wind Erodibility Group (WEG) consists of soils that have similar properties affecting their susceptibility to wind erosion in cultivated areas. Soils assigned to Group 1 are the most susceptible to wind erosion and those assigned to Group 8 are the least susceptible. The soils associated with the Project are assigned to Group 6, indicating a lower susceptibility for wind erosion. Information regarding the project site soils is included in Appendix D of this report. SITE AND DISTRUBED AREAS Site and disturbance areas anticipated for the project construction activities are indicted below: • Site Area: ±2.79 Acres • Limits of Construction: ±2.95 Acres • Disturbance Area: ±2.95 Acres These areas are as indicated on the Erosion Control Plan included in Appendix A. RAINFALL DATA Rainfall data was for the 24 hour rainfall was obtained from the Precipitation Frequency Data Server using NOAA Atlas 14, Volume 8 for the City of Fort Collins and is shown in the following table. Storm Frequency Rainfall Depth (Inches) 2-year 1.9 5-year 2.5 10-year 3.0 25-year 3.9 50-year 4.7 100-year 5.6 13 WOODSPRING SUITES │ SWMP REPORT MARCH 25, 2019 RECEIVING WATERS Receiving waters were determined using the Final Drainage Report for Interchange Business Park dated April 13, 2001. USGS website: The National Map Viewer (http://viewer.nationalmap.gov/viewer/) and the State of Colorado Department of Natural Resources, Division of Water Resources Colorado River Basins map (state river basins.mxd, March 16, 2005) and are as follows: • Immediate Receiving Waters – Boxelder Creek • Ultimate Receiving Waters – Poudre River PROPOSED SITE CONDITIONS PROJECT DESCRIPTION The Site will be developed on a platted tract located in the northeast quarter of Section 15, Township 7 North, Range 68 West of the 6th PM. The Site is approximately 2.79 acres and is undeveloped. TOPOGRAPHY AND DRAINAGE CHARACTERISTICS The site is relativity flat with slopes ranging from 0.5% to 3%. Existing drainage patterns will be maintained with this Project. PROPOSED CONSTRUCTION ACTIVITIES 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: 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. WOODSPRING SUITES │ SWMP REPORT JANUARY 24, 2020 14 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 two existing inlets and two proposed inlets. 8. Install Outlet Protection (OP) at the proposed flared end section location. 9. Install Rock Socks (RS) for existing stormwater conveyance facilities as indicated on the Erosion Control Plans or as necessitated by field conditions. 10. Install Sediment Control Logs (SCL) on each side of the offsite portion of the storm sewer during installation. 11. 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. 12. Install Concrete Washout Area (CWA) prior to construction of concrete improvements. 13. Install utilities, storm sewers, curb and gutters. 14. 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. 15. Start construction of building pad and structures. 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. EROSION CONTROL PLAN REQUIREMENTS The Erosion Control Plans for this project is included within Appendix A of this report and meets the following minimum requirements: • Construction Site Boundaries • Identification of Ground Surface Disturbance • Areas of Cut / Fill • Areas of Storage of Building Materials, Equipment, Soil or Waste • Location of Dedicated Asphalt or Concrete Batch Plants • Location of Structural control measures • Location of Non-Structural control measures • Location of Springs, Streams, Wetlands or other Surface Waters (As Applicable) 15 WOODSPRING SUITES │ SWMP REPORT MARCH 25, 2019 STORMWATER MANAGEMENT CONTROLS QUALIFIED STORMWATER MANAGER The individual(s) knowledgeable in the principles and practices of erosion and sediment control and pollution prevention, and with the skills to assess conditions at construction sites that could impact stormwater quality and to assess the effectiveness of stormwater controls implemented. The activities and responsibilities of the Manager shall address all aspects of the facility’s SWMP. The Operator will be assigned the Qualified Stormwater Manager role and these terms are used interchangeably in the SWMP. SITE SPECIFIC POLLUTION SOURCES Further identification of site specific pollutants that fall within the categories outlined in the next section may be field noted using the corresponding log included in the appendices of this report. The logs are intended to record site specific pollutants, the date of arrival on the site, the date removed from the site, and the methods of treatment. IDENTIFICATION OF POLLUTANT SOURCES Evaluation of general sediment and non-sediment pollution sources associated with site construction activities, as outlined within the State General Permit, consist of the following: • Disturbed and Stored Soils – Earth disturbing activities (grading, excavation, etc.) will be necessary for this project; therefore, the potential exists for disturbed site soils to contribute sediment to stormwater discharges. Recommended control measures are identified below: o Silt Fence o Temporary Seeding o Permanent Stabilization o Inlet Protection o Rock Socks o Street Sweeping • Vehicle Tracking and Sediment – Construction traffic will be entering and exiting the Site; therefore, the potential exists for vehicle tracking to contribute sediment to stormwater discharges. Recommended control measures are identified below: o Rock Socks o Street Sweeping o Vehicle Tracking Control o Stabilized Staging Area o Stockpile Management • Management of Contaminated Soils – Contaminated soils are not anticipated on this Site. If encountered, the Qualified Stormwater Manager shall take appropriate containment and treatment measures. • Loading and Unloading Operations – Loading and unloading operations will be taking place at the Site; therefore, the potential exists for these operations to introduce sediment and non-sediment pollutants to stormwater discharges. Recommended control measures are identified below: o Covering Outdoor Storage and Handling Areas o Good Housekeeping Practices • Outdoor Storage of Materials – Limited outdoor storage of materials is anticipated with construction of this site; however, outdoor storage of chemicals, fertilizers, etc. is not anticipated. Recommended control measures are identified below: WOODSPRING SUITES │ SWMP REPORT JANUARY 24, 2020 16 o Covering Outdoor Storage and Handling Areas o Good Housekeeping Practices o Spill Prevention Containment and Control • Vehicle and Equipment Maintenance and Fueling – Routine maintenance and fueling of vehicles and equipment is anticipated with this Site; therefore, the potential exists for pollutants associated with these activities to contribute pollutants to stormwater discharges. Recommended control measures are identified below: o Vehicle Equipment Maintenance and Fueling • Significant Dust or Particulate Generating Processes – Earth disturbing activities (grading, excavation, etc.) will be necessary for this project; therefore, the potential exists for windblown site soils to contribute sediment to stormwater discharges. Recommended control measures are identified below: o Wind Erosion / Dust Control • Routine Maintenance – Routine maintenance involving fertilizers, pesticides, detergents, fuels, solvents, oils, etc., other than those identified within Vehicle and Equipment Maintenance and Fueling are not anticipated with this project. If encountered, the Qualified Stormwater Manager shall take appropriate containment and treatment measures. Recommended control measures are identified below: o Preventative Maintenance • Onsite Waste Management – Waste management consisting of solid waste piles, liquid wastes, dumpsters, etc. are anticipated onsite; therefore, the potential exists for these operations to introduce sediment and non-sediment pollutants to stormwater discharges. Recommended control measures are identified below: o Good Housekeeping • Concrete Truck / Equipment Washing – Concrete truck and equipment washing are anticipated with this project. The Qualified Stormwater Manager shall take appropriate containment and treatment measures. Recommended control measures are identified below: o Concrete Washout Area • Dedicated Asphalt and Concrete Batch Plants – Dedicated asphalt and/or concrete batch plants are not anticipated with this project. If encountered, the Qualified Stormwater Manager shall take appropriate containment and treatment measures and document as necessary. • Non-Industrial Waste Sources – Non-Industrial waste sources limited to portable sanitary facilities are anticipated with this project. Recommended control measures are identified below: o Good Housekeeping • Additional Pollutant Sources – Additional areas or procedures where potential spills could occur are not anticipated with this project. Logs for the identification of pollutant sources are included in Appendix E for reference and use. Based on the following, the potential to contribute pollutants to stormwater discharges is not significant for most of the pollutants identified above: • Relatively Low Frequency of the Activities • The Ability to Schedule Activities During Dry Weather • Existing Site Topography • The Ability to Implement Primary and Secondary Containment for Product Storage • The Ability to Locate Activities Away from Drainage Ways 17 WOODSPRING SUITES │ SWMP REPORT MARCH 25, 2019 BEST MANAGEMENT PRACTICES FOR STORMWATER POLLUTION PREVENTION 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 F. 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 F. 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 G 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 WOODSPRING SUITES │ SWMP REPORT JANUARY 24, 2020 18 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 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 H 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. 19 WOODSPRING SUITES │ SWMP REPORT MARCH 25, 2019 WASTE MANAGEMENT AND DISPOSAL An effective first step towards preventing pollution in stormwater from work sites involves using a common sense 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 Groundwater dewatering is not anticipated. If encountered, the operator shall file for appropriate permits with the CDPHE. FINAL STABILIZATION AND LONG TERM STORMWATER MANAGEMENT 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. 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 WOODSPRING SUITES │ SWMP REPORT JANUARY 24, 2020 20 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 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 21 WOODSPRING SUITES │ SWMP REPORT MARCH 25, 2019 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. Rip-rap, 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 log books, 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 I and Appendix J for reference and use. 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 WOODSPRING SUITES │ SWMP REPORT JANUARY 24, 2020 22 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. CONCLUSIONS Temporary erosion control measures and control measures will enhance stormwater quality within the project area by capturing and detaining sediment-laden runoff prior to discharging off-site. 23 WOODSPRING SUITES │ SWMP REPORT MARCH 25, 2019 REFERENCES City of Fort Collins Amendments to the UDFCD Criteria Manual - City of Fort Collins Ordinance No. 174, 2011. Colorado Discharge Permit System (CDPS) – Stormwater Discharge Associated with Construction Activities Application - Prepared by Water Quality Control Division, Colorado Department of Public Health and Environment; Revised April 2011. Colorado Discharge Permit System (CDPS) General Permit – Stormwater Discharges Associated with Construction Activity - Prepared by Water Quality Control Division, Colorado Department of Public Health and Environment; signed and issued on May 31, 2007 and administratively continued effective July 1, 2013. NRCS Web Soil Survey - Website: http://websoilsurvey.nrcs.usda.gov. Precipitation-Frequency Atlas of the Western United States - NOAA ATLAS 2, Volume III-Colorado. Prepared by the US Department of Commerce, National Oceanic and Atmospheric Administration and National Weather Service; dated 1973. Stormwater Discharges Associated with Construction Activity – Stormwater Management Plan Preparation Guidance - Prepared by Water Quality Control Division, Colorado Department of Public Health and Environment; Revised April 2011. Threatened, Endangered, Candidate and Proposed Species - Prepared by US Department of the Interior, Fish and Wildlife Services, Ecological Services, Colorado Field Offices; printed May 2015. Urban Storm Drainage Criteria Manual – Volume 3 – Prepared by the Urban Drainage and Flood Control District; Current Revision November 2010. WOODSPRING SUITES │ SWMP REPORT JANUARY 24, 2020 24 APPENDIX WOODSPRING SUITES │ SWMP REPORT MARCH 26, 2019 APPENDIX A – EROSION CONTROL PLANS FORT COLLINS, COLORADO 847 SE FRONTAGE ROAD WOODSPRING SUITES FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION OF 15 LEGEND APPLICABLE CONTROL MEASURE DETAILS EROSION CONTROL ADDITIONAL NOTES 10 EROSION CONTROL PLAN - INITIAL NORTH INTERSTATE 1-25 SOUTHEAST FRONTAGE ROAD (PRIVATE) FORT COLLINS, COLORADO 847 SE FRONTAGE ROAD WOODSPRING SUITES FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION OF 15 LEGEND EROSION CONTROL ADDITIONAL NOTES APPLICABLE CONTROL MEASURE DETAILS 11 EROSION CONTROL PLAN - FINAL NORTH INTERSTATE 1-25 SOUTHEAST FRONTAGE ROAD (PRIVATE) FORT COLLINS, COLORADO 847 SE FRONTAGE ROAD WOODSPRING SUITES FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 12 OF 15 EROSION CONTROL DETAILS FORT COLLINS, COLORADO 847 SE FRONTAGE ROAD WOODSPRING SUITES FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION 13 OF 15 EROSION CONTROL DETAILS FORT COLLINS, COLORADO 847 SE FRONTAGE ROAD WOODSPRING SUITES FOR REVIEW ONLY NOT FOR Kimley-Horn and Associates, Inc. CONSTRUCTION OF 15 SWMP INFORMATION 14 EROSION CONTROL DETAILS WOODSPRING SUITES │ SWMP REPORT MARCH 26, 2019 APPENDIX B – PERMIT CITY OF FORT COLLINS EXCAVATION PERMIT CDPHE COLORADO DISCHARGE PERMIT SYSTEM (CDPS) STORMWATER DISCHARGE ASSOCIATED WITH CONSTRUCTION ACTIVITIES APPLICATION CDPHE NOITCE OF REASSIGNMENT OF PERMIT COVERAGE AND GENERAL PERMIT APPLICATION Engineering Department 281 North College Avenue - PO Box 580 Fort Collins, CO 80522-0580 (970) 221-6605 FAX: (970) 224-6134 PERMIT FOR EXCAVATION ON PUBLIC PROPERTY IN THE RIGHT-OF-WAY Minimum of 5 Working Days Required for Approval. Plans that clearly show the proposed work must be included with the permit. Emergency Excavation Permits may be obtained next business day. Applicant: Fill out sections 1 – 5 only City Use Applicant Name: Company: Phone: Address: City/State/Zip: Sub-Contractor: Phone: Do both contractor and sub-contractor possess license & proper endorsement to work in the Public Right-of-Way? Yes No Is this a City project? _____ Yes _____ No If so, Project Manager’s Name: Is this project for a new development? _____ Yes _____ No If so, Development Name: Field Contact Name: Phone: Excavation Address: Scheduled Start Date: Final: Temp. Patch Date: Back Fill: Excavation Type: Open Cut: Boring: Excavation Size: Width Length Sq. Ft. Depth Total Sq. Ft. Pavement Removed: Existing Surface Type: Asphalt Concrete Gravel Soil Grass Purpose of Excavation: Water Sewer Telephone Electric Gas Communications Other Applicant is responsible to notify the following departments: Utilities - 700 Wood St., 221-6700 For coordination of new utilities with existing utilities Traffic - 625 Ninth St., 221-6630 For traffic control plan submittal and coordination of signalized Intersections. Parks (if applicable) - 413 S. Bryan, 221-6660 For work in the park system Parking - 210 E. Olive, 221-6617 For work downtown or at CSU Forestry - 413 S. Bryan, 221-6660 For trees, shrubs or other vegetation Mark box next to department after notification. Permit #: Approval Date: Expiration Date: 30 DAYS FROM APPROVAL Reviewed By: Review Date: Development Review Permit Project Name: Fees: Application Fee: $ 30.00 Non-Refundable Inspection Fee: $ $50.00/1000 ft 2 STORMWATER DISCHARGE ASSOCIATED WITH CONSTRUCTION ACTIVITIES APPLICATION COLORADO DISCHARGE PERMIT SYSTEM (CDPS) PHOTO COPIES, FAXED COPIES, PDF COPIES OR EMAILS WILL NOT BE ACCEPTED. For Applications submitted on paper - Please print or type. Original signatures are required. All items must be completed accurately and in their entirety for the application to be deemed complete. Incomplete applications will not be processed until all information is received which will ultimately delay the issuance of a permit. If more space is required to answer any question, please attach additional sheets to the application form. Applications or signature pages for the application may be submitted by mail or hand delivered to: Colorado Department of Public Health and Environment, 4300 Cherry Creek Drive South, WQCD-P-B2, Denver, CO 80246-1530 For Applications submitted electronically Please note that you can ONLY complete the feedback form by downloading it to a PC or Mac/Apple computer and opening the Application with Adobe Reader or a similar PDF reader. The form will NOT work with web browsers, Google preview, Mac preview software or on mobile devices using iOS or Android operating systems. If application is submitted electronically, processing of the application will begin at that time and not be delayed for receipt of the signed document. Any additional information that you would like the Division to consider in developing the permit should be provided with the application. Examples include effluent data and/or modeling and planned pollutant removal strategies. Beginning July 1, 2016, invoices will be based on acres disturbed. DO NOT PAY THE FEES NOW – Invoices will be sent after the receipt of the application. Disturbed Acreage for this application (see page 4) Less than 1 acre ($83 initial fee, $165 annual fee) 1-30 acres ($175 initial fee, $350 annual fee) Greater than 30 acres ($270 initial fee, $540 annual fee) Responsible Person (Title): PERMIT INFORMATION Reason for Application: NEW CERT RENEW CERT EXISTING CERT# Applicant is: Property Owner Contractor/Operator A. CONTACT INFORMATION - *indicates required * PERMITTED ORGANIZATION FORMAL NAME: 1) * PERMIT OPERATOR - the party that has operational control over day to day activities - may be the same as owner. Currently Held By (Person): FirstName: LastName: Telephone: Email Address: Organization: Mailing Address: City: State: Zip Code: Per Regulation 61 : All reports required by permits, and other information requested by the Division shall be signed by the permittee or by a duly authorized representative of that person. A person is a duly authorized representative only if: (i) The authorization is made in writing by the permittee (ii) The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position); and (iii) The written authorization is submitted to the Division SW Construction Application for: page 1 of 5 ASSIGNED PERMIT NUMBER _____________________________ Date Received _____/_____/_____ MM DD YYYY Revised: 10-2017 Responsible Person (Title): 2) OWNER - party has ownership or long term lease of property - may be the same as the operator. Currently Held By (Person): FirstName: LastName: Telephone: Email Address: Organization: Mailing Address: City: State: Zip Code: Same as 1) Permit Operator Per Regulation 61 : All reports required by permits, and other information requested by the Division shall be signed by the permittee or by a duly authorized representative of that person. A person is a duly authorized representative only if: i. The authorization is made in writing by the permittee. ii. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position); and iii. The written authorization is submitted to the Division. Responsible Person (Title): Currently Held By (Person): FirstName: LastName: Telephone: Email Address: Organization: Mailing Address: City: State: Zip Code: Same as 1) Permit Operator 4) *BILLING CONTACT if different than the permittee. 3) *SITE CONTACT local contact for questions relating to the facility & discharge authorized by this permit for the facility Responsible Person (Title): Currently Held By (Person): FirstName: LastName: Telephone: Email Address: Organization: Mailing Address: City: State: Zip Code: Same as 1) Permit Operator SW Construction Application for: page 2 of 5 Responsible Person (Title): 5) OTHER CONTACT TYPES (check below) Add pages if necessary: Currently Held By (Person): FirstName: LastName: Telephone: Email Address: Organization: Mailing Address: City: State: Zip Code: Environmental Contact Inspection Facility Contact Consultant Compliance Contact Stormwater MS4 Responsible Person Stormwater Authorized Representative B) PERMITTED PROJECT/FACILITY INFORMATION Latitude Project/Facility Name Street Address or Cross Streets (e.g., Park St and 5 Ave; CR 21 and Hwy 10; 44 Ave and Clear Creek) ; A street name without an address, intersection, mile marker, or other identifying information describing the location of the project is not adequate. For linear projects, the route of the project should be described as best as possible using the starting point for the address and latitude and longitude – more clearly defined in the required map ) Facility Latitude/Longitude - List the latitude and longitude of the excavation(s) resulting in the discharge(s). If the exact soil disturbing location(s) are not known, list the latitude and longitude of the center point of the construction project. If using the center point, be sure to specify that it is the center point of construction activity. The preferred method is GPS and Decimal Degrees. . Longitude Decimal Degrees (to 5 decimal places) . Decimal Degrees (to 5 decimal places) (e.g., 39.70312°, 104.93348°) This information may be obtained from a variety of sources, including:  Surveyors or engineers for the project should have, or be able to calculate, this information.  U.S. Geological Survey topographical map(s), available at area map stores.  Using a Global Positioning System (GPS) unit to obtain a direct reading.  Google - enter address in search engine, select the map, right click on location, and select “what’s here”. Note: the latitude/longitude required above is not the directional degrees, minutes, and seconds provided on a site legal description to define property boundaries. C) MAP (Attachment) If no map is submitted, the application cannot be submitted. Map: Attach a map that indicates the site location and that CLEARLY shows the boundaries of the area that will be disturbed. A vicinity map is not adequate for this purpose. Legal description: If subdivided, provide the legal description below, or indicate that it is not applicable (do not supply Township/Range/Section or metes and bounds description of site) Subdivision(s): Lot(s): Block(s) OR Not applicable (site has not been subdivided) SW Construction Application for: page 3 of 5 City: County: Zip Code: D) LEGAL DESCRIPTION - only for Subdivisions Total area of project disturbance site (acres): E) AREA OF CONSTRUCTION SITE - SEE PAGE 1 - WILL DETERMINE FEE Note: aside from clearing, grading and excavation activities, disturbed areas also include areas receiving overburden (e.g., stockpiles), demolition areas, and areas with heavy equipment/vehicle traffic and storage that disturb existing vegetative cover. Part of Larger Common Plan of Development or Sale, (i.e., total, including all phases, filings, lots, and infrastructure not covered by this application) Provide both the total area of the construction site, and the area that will undergo disturbance, in acres. Commercial Development Non-structural and other development (i.e. parks, trails, stream realignment, bank stabilization, demolition, etc.) F) NATURE OF CONSTRUCTION ACTIVITY Check the appropriate box(es) or provide a brief description that indicates the general nature of the construction activities. (The full description of activities must be included in the Stormwater Management Plan.) Residential Development Highway and Transportation Development Pipeline and Utilities (including natural gas, electricity, water, and communications) Oil and Gas Exploration and Well Pad Development SW Construction Application for: page 4 of 5 G) ANTICIPATED CONSTRUCTION SCHEDULE Construction Start Date: Final Stabilization Date:  Construction Start Date - This is the day you expect to begin ground disturbing activities, including grubbing, stockpiling, excavating, demolition, and grading activities.  Final Stabilization Date - in terms of permit coverage, this is when the site is finally stabilized. This means that all ground surface disturbing activities at the site have been completed, and all disturbed areas have been either built on, paved, or a uniform vegetative cover has been established with an individual plant density of at least 70 percent of pre-disturbance levels. Permit coverage must be maintained until the site is finally stabilized. Even if you are only doing one part of the project, the estimated final stabilization date must be for the overall project. If permit coverage is still required once your part is completed, the permit certification may be transferred or reassigned to a new responsible entity(s). H) RECEIVING WATERS (If discharge is to a ditch or storm sewer, include the name of the ultimate receiving waters) Immediate Receiving Water(s): Ultimate Receiving Water(s): Identify the receiving water of the stormwater from your site. Receiving waters are any waters of the State of Colorado. This includes all water courses, even if they are usually dry. If stormwater from the construction site enters a ditch or storm sewer system, identify that system and indicate the ultimate receiving water for the ditch or storm sewer. Note: a stormwater discharge permit does not allow a discharge into a ditch or storm sewer system without the approval of the owner/ operator of that system. I) SIGNATURE PAGE STORMWATER MANAGEMENT PLAN CERTIFICATION Ink Signature For Docusign Electronic Signature 1. You may print and sign this document and mail the hard copy to the State along with required documents (address on page one). 2. Electronic Submission Signature You may choose to submit your application electronically, along with required attachments. To do so, click the SUBMIT button below which will direct you, via e-mail , to sign the document electronically using the DocuSign Electronic Signature process. Once complete, you will receive via e-mail, an electronically stamped Adobe pdf of this application. Print the signature page from the electronically stamped pdf, sign it and mail it to the WQCD Permits Section to complete the application process (address is on page one of the application).  The Division encourages use of the electronic submission of the application and electronic signature. This method meets signature requirements as required by the State of Colorado.  The ink signed copy of the electronically stamped pdf signature page is also required to meet Federal EPA Requirements.  Processing of the application will begin with the receipt of the valid electronic signature. By checking this box “I certify under penalty of law that a complete Stormwater Management Plan, as described in the stormwater management plan guidance, has been pre-pared for my activity. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the Stormwater Management Plan is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for falsely certifying the completion of said SWMP, including the possibility of fine and imprisonment for knowing violations.” Date: Signature of Legally Responsible Person or Authorized Agent (submission must include original signature) Name (printed) Title "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." “I understand that submittal of this application is for coverage under the State of Colorado General Permit for Stormwater Discharges Associated with Construction Activity for the entirety of the construction site/project described and applied for, until such time as the application is amended or the certification is transferred, inactivated, or expired.” [Reg 61.4(1)(h)] DO NOT INCLUDE A COPY OF THE STORMWATER MANAGEMENT PLAN DO NOT INCLUDE PAYMENT—AN INVOICE WILL BE SENT AFTER THE CERTIFICATION IS ISSUED. Signature: The applicant must be either the owner and operator of the construction site. Refer to Part B of the instructions for additional information. The application must be signed by the applicant to be considered complete. In all cases, it shall be signed as follows: (Regulation 61.4 (1ei) a) In the case of corporations, by the responsible corporate officer is responsible for the overall operation of the facility from which the discharge described in the form originates b) In the case of a partnership, by a general partner. c) In the case of a sole proprietorship, by the proprietor. d) In the case of a municipal, state, or other public facility, by either a principal executive officer, ranking elected official, (a principal executive officer has responsibility for the overall operation of the facility from which the discharge originates). SW Construction Application for: page 5 of 5 3rd Party Preparer: If this form was prepared by an authorized agent on behalf of the Permittee, please complete the field below. Preparer Name (printed) Email Address For Agency Use Only Permit Number Assigned COR03-______________ Date Received ____/____/____ Month Day Year NOTICE OF REASSIGNMENT OF PERMIT COVERAGE AND GENERAL PERMIT APPLICATION STORMWATER DISCHARGE ASSOCIATED WITH CONSTRUCTION ACTIVITIES PHOTO COPIES, FAXED COPIES, PDF COPIES OR EMAILS WILL NOT BE ACCEPTED. Please print or type. Original signatures are required. This application must be considered complete by the Division prior to initiation of permit processing. The Division will notify the applicant if additional information is needed to complete the application. If more space is required to answer any question, please attach additional sheets to the application form. Applications must be mailed or delivered to: Colorado Department of Public Health and Environment Water Quality Control Division 4300 Cherry Creek Drive South WQCD-P-B2 Denver, Colorado 80246-1530 **Part I of the application beginning below is to be filled out by the new permit applicant that will be assuming permitting liability for the reassigned portion of the original applicant’s site. **Part II of the application, starting on page 3 of the form, is to be completed by the current permittee. Both Parts I (pages 1-4) and II (page 5) must be completed. EXISTING CERT **__________________ (from Part II) ** NOTE: THIS WILL CREATE A NEW PERMIT FOR PART 1 APPLICANT. THE EXISTING PERMIT WILL NOT BE TERMINATED. THIS IS NOT A TRANSFER FORM. PART I - To be completed by the New permit applicant: I hereby accept the reassignment of permit coverage for the area described in this application. I have reviewed the terms and conditions of this permit and the Stormwater Management Plan and accept full responsibility, coverage and liability REASSIGNMENT WILL BE EFFECTIVE _____________________________ MONTH/ DAY/ YEAR Applicant is : Property Owner Contractor/Operator A. CONTACT INFORMATION - NOT ALL CONTACT TYPES MAY APPLY * indicates required *PERMITTEE (If more than one please add additional pages) *ORGANIZATION FORMAL NAME: 1) *PERMITTEE the person authorized to sign and certify the permit application. This person receives all permit correspondences and is legally responsible for compliance with the permit. Responsible Position (Title): ___________________________________________ Currently Held By Person):___________________________________________________________ Telephone No:__________________________________ email address__________________________________ Organization: Mailing Address: City:_ State: Zip: This form must be signed by the Permittee to be considered complete. Per Regulation 61 In all cases, it shall be signed as follows: a) In the case of corporations, by a responsible corporate officer. For the purposes of this section, the responsible corporate officer is responsible for the overall operation of the facility from which the discharge described in the application originates. b) In the case of a partnership, by a general partner. c) In the case of a sole proprietorship, by the proprietor. d) In the case of a municipal, state, or other public facility, by either a principal executive officer or ranking elected official Application Part 1 page 1of 4 updated 4/2011 2) DMR COGNIZANT OFFICIAL (i.e. authorized agent) the person or position authorized to sign and certify reports required by the Division including Discharge Monitoring Reports *DMR’s, Annual Reports, Compliance Schedule submittals, and other information requested by the Division. The Division will transmit pre-printed reports (ie. DMR’s) to this person. If more than one, please add additional pages. Same As 1) Permittee Responsible Position (Title):____________________________________________________ Currently Held By (Person):__________________________________________________ Telephone No:_______________________________ email address____________________________________ Organization:_______________________________________________________________ Mailing Address: ____________________________________________________________ City:_ State: Zip: _______________________ Per Regulation 61 : All reports required by permits, and other information requested by the Division shall be signed by the permittee or by a duly authorized representative of that person. A person is a duly authorized representative only if: (i) The authorization is made in writing by the permittee (ii) The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position); and (iii) The written authorization is submitted to the Division 3) *SITE CONTACT local contact for questions relating to the facility & discharge authorized by this permit for the facility. Same As 1) Permittee Responsible Position (Title):____________________________________________________ Currently Held By (Person):__________________________________________________ Telephone No:_______________________________ email address____________________________________ Organization:_______________________________________________________________ Mailing Address: ____________________________________________________________ City:_ State: Zip: _______________________ 4) * BILLING CONTACT if different than the permittee Responsible Position (Title):____________________________________________________ Currently Held By (Person):__________________________________________________ Telephone No:_______________________________ email address____________________________________ Organization:_______________________________________________________________ Mailing Address: ____________________________________________________________ City:_ State: Zip: _______________________ 5) OTHER (Please describe)_____________________________________________________ Responsible Position (Title):____________________________________________________ Currently Held By (Person):__________________________________________________ Telephone No:_______________________________ email address____________________________________ Organization:_______________________________________________________________ Mailing Address: ____________________________________________________________ City:_ State: Zip: _______________________ Application Part 1 page 2 of 4 updated 4/2011 B. Permitted Project/Facility Information Project/Facility Name Street Address or cross streets City, Zip Code County Facility Latitude/Longitude— (approximate center of site to nearest 15 seconds using one of following formats 001A Latitude . Longitude . (e.g., 39.703°, 104.933°’) degrees (to 3 decimal places) degrees (to 3 decimal places) or 001A Latitude º ’ " Longitude º ’ " (e.g., 39°46'11"N, 104°53'11"W) degrees minutes seconds degrees minutes seconds C. MAP (Attachment) Map: Attach a map that indicates the site location and that CLEARLY shows the boundaries of the area that will be disturbed. Maps must be no larger than 11x17 inches. D. LEGAL DESCRIPTION Legal description: If subdivided, provide the legal description below, or indicate that it is not applicable (do not supply Township/Range/Section or metes and bounds description of site) Subdivision(s): Lot(s): Block(s): OR □ Not applicable (site has not been subdivided) E. AREA OF CONSTRUCTION SITE Total area of project site (acres): Area of project site to undergo disturbance (acres): Total disturbed area of Larger Common Plan of Development or Sale, if applicable: (i.e., total, including all phases, filings, lots, and infrastructure not covered by this application) F. NATURE OF CONSTRUCTION ACTIVITY Check the appropriate box(s) or provide a brief description that indicates the general nature of the construction activities. (The full description of activities must be included in the Stormwater Management Plan.) □ Single Family Residential Development □ Multi-Family Residential Development □ Commercial Development □ Oil and Gas Production and/or Exploration (including pad sites and associated infrastructure) □ Highway/Road Development (not including roadways associated with commercial or residential development) □ Other, Describe: G. ANTICIPATED CONSTRUCTION SCHEDULE Construction Start Date: Final Stabilization Date: Application Part 1 page 3 of 4 updated 4/2011 NOTICE OF REASSIGNMENT OF PERMIT COVERAGE AND GENERAL PERMIT APPLICATION STORMWATER DISCHARGE ASSOCIATED WITH CONSTRUCTION ACTIVITIES Application Part 1 page 4 of 4 updated 4/2011 H. RECEIVING WATERS (If discharge is to a ditch or storm sewer, include the name of the ultimate receiving waters) Immediate Receiving Water(s): Ultimate Receiving Water(s): I. REQUIRED SIGNATURES (Both parts i. and ii. must be signed) Signature of Applicant: The applicant must be either the owner and/or operator of the construction site. Refer to Part B of the instructions for additional information. The application must be signed by the applicant to be considered complete. In all cases, it shall be signed as follows: a) In the case of corporations, by a principal executive officer of at least the level of vice-president or his or her duly authorized representative, if such representative is responsible for the overall operation of the facility from which the discharge described in the application originates. b) In the case of a partnership, by a general partner. c) In the case of a sole proprietorship, by the proprietor. d) In the case of a municipal, state, or other public facility, by either a principal executive officer, ranking elected official, or other duly authorized employee if such representative is responsible for the overall operation of the facility from which the discharge described in the form originates. STOP!:A Stormwater Management Plan must be completed prior to signing the following certifications! i. Stormwater Management Plan Certification “I certify under penalty of law that a complete Stormwater Management Plan, as described in the stormwater management plan guidance document, has been prepared for my activity. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the Stormwater Management Plan is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for falsely certifying the completion of said SWMP, including the possibility of fine and imprisonment for knowing violations.” XX Signature of Legally Responsible Person or Authorized Agent (submission must include original signature) Date Signed Name (printed) Title ii. Signature of Permit Legal Contact “I certify under penalty of law that I have personally examined and am familiar with the information submitted in this application and all attachments and that, based on my inquiry of those individuals immediately responsible for obtaining the information, I believe that the information is true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine or imprisonment. “I understand that submittal of this application is for coverage under the State of Colorado General Permit for Stormwater Discharges Associated with Construction Activity for the entirety of the construction site/project described and applied for, until such time as the application is amended or the certification is transferred, inactivated, or expired.” XX Signature of Legally Responsible Person (submission must include original signature) Date Signed Name (printed Title DO NOT INCLUDE A COPY OF THE STORMWATER MANAGEMENT PLAN DO NOT INCLUDE PAYMENT – AN INVOICE WILL BE SENT AFTER THE CERTIFICATION IS ISSUED. NOTICE OF REASSIGNMENT OF PERMIT COVERAGE AND GENERAL PERMIT APPLICATION STORMWATER DISCHARGE ASSOCIATED WITH CONSTRUCTION ACTIVITIES Application Part 2 page 1 of 1 updated 4/2011 PART II - AMENDMENT TO THE CURRENT PERMIT CERTIFICATION TO BE COMPLETED BY CURRENT PERMITTEE CERTIFICATION NUMBER COR03________________ THIS PERMIT WILL NOT BE TERMINATED II.A. CURRENT PERMIT LEGAL CONTACT INFORMATION Check if information has changed Company Name: Legally Responsible Person: First Name: Last Name: Title: Mailing Address: City, State and Zip Code: Phone: Email Address: 2. PERMITTED FACILITY INFORMATION Name of Plan, Project or Development: Latitude and Longitude (approximate center of site to nearest 15 seconds using one of following formats): Latitude: Longitude: (e.g., 39°42’11’’, 104°55’57’’) degrees /minutes/ seconds OR degrees/ minutes/ seconds Latitude: Longitude: (e.g., 39.703°, 104.933’) degrees (to 3 decimal places) degrees (to 3 decimal places) 3. MAP (Attachment) Map: Attach a map that indicates the site location and that CLEARLY shows the boundaries of the area that will be retained under this current certification. Maps must be no larger than 11x17 inches. 4. NATURE OF CONSTRUCTION ACTIVITY Check the appropriate box(s) or provide a brief description that indicates the general nature of the construction activities. (The full description of activities must be included in the Stormwater Management Plan.) □ Single Family Residential Development □ Multi-Family Residential Development □ Commercial Development □ Other, Describe: 9. REQUIRED SIGNATURES Certification for Reassignment “I certify under penalty of law that I have personally examined and am familiar with the information submitted in Part II of this application and all attachments in reference to Part II and that, based on my inquiry of those individuals immediately responsible for obtaining the information, I believe that the information is true, accurate and complete. I am aware that thereare significant penalties for submitting false information, including the possibility of fine or imprisonment. “As the permittee currently covered by the above-referenced certification, I hereby agree to reassign the permit coverage for the area and activity described in Items I.b. and I.c., and all responsibilities thereof, from the above-referenced permit certification to the new permittee listed in Part I of this form.” Signature of Legally Responsible Person (submission must include original ink signature) Date Signed Name (printed) Title WOODSPRING SUITES │ SWMP REPORT MARCH 26, 2019 APPENDIX C – THEATENED AND ENDANGERED SPECIES June 21, 2017 United States Department of the Interior FISH AND WILDLIFE SERVICE Colorado Ecological Services Field Office Denver Federal Center P.O. Box 25486 Denver, CO 80225-0486 Phone: (303) 236-4773 Fax: (303) 236-4005 http://www.fws.gov/coloradoES http://www.fws.gov/platteriver In Reply Refer To: Consultation Code: 06E24000-2017-SLI-1002 Event Code: 06E24000-2017-E-03054 Project Name: Spring Creek Place Subject: List of threatened and endangered species that may occur in your proposed project location, and/or may be affected by your proposed project To Whom It May Concern: The enclosed species list identifies threatened, endangered, proposed and candidate species, as well as proposed and final designated critical habitat, that may occur within the boundary of your proposed project and/or may be affected by your proposed project. The species list fulfills the requirements of the U.S. Fish and Wildlife Service (Service) under section 7(c) of the Endangered Species Act (Act) of 1973, as amended (16 U.S.C. 1531 et seq. ). New information based on updated surveys, changes in the abundance and distribution of species, changed habitat conditions, or other factors could change this list. Please feel free to contact us if you need more current information or assistance regarding the potential impacts to federally proposed, listed, and candidate species and federally designated and proposed critical habitat. Please note that under 50 CFR 402.12(e) of the regulations implementing section 7 of the Act, the accuracy of this species list should be verified after 90 days. This verification can be completed formally or informally as desired. The Service recommends that verification be completed by visiting the ECOS-IPaC website at regular intervals during project planning and implementation for updates to species lists and information. An updated list may be requested through the ECOS-IPaC system by completing the same process used to receive the enclosed list. The purpose of the Act is to provide a means whereby threatened and endangered species and the ecosystems upon which they depend may be conserved. Under sections 7(a)(1) and 7(a)(2) of the Act and its implementing regulations (50 CFR 402 et seq. ), Federal agencies are required to utilize their authorities to carry out programs for the conservation of threatened and endangered species and to determine whether projects may affect threatened and endangered species and/or designated critical habitat. 06/21/2017 Event Code: 06E24000-2017-E-03054 2 A Biological Assessment is required for construction projects (or other undertakings having similar physical impacts) that are major Federal actions significantly affecting the quality of the human environment as defined in the National Environmental Policy Act (42 U.S.C. 4332(2) (c)). For projects other than major construction activities, the Service suggests that a biological evaluation similar to a Biological Assessment be prepared to determine whether the project may affect listed or proposed species and/or designated or proposed critical habitat. Recommended contents of a Biological Assessment are described at 50 CFR 402.12. If a Federal agency determines, based on the Biological Assessment or biological evaluation, that listed species and/or designated critical habitat may be affected by the proposed project, the agency is required to consult with the Service pursuant to 50 CFR 402. In addition, the Service recommends that candidate species, proposed species and proposed critical habitat be addressed within the consultation. More information on the regulations and procedures for section 7 consultation, including the role of permit or license applicants, can be found in the "Endangered Species Consultation Handbook" at: http://www.fws.gov/endangered/esa-library/pdf/TOC-GLOS.PDF Please be aware that bald and golden eagles are protected under the Bald and Golden Eagle Protection Act (16 U.S.C. 668 et seq. ), and projects affecting these species may require development of an eagle conservation plan (http://www.fws.gov/windenergy/eagle_guidance.html). Additionally, wind energy projects should follow the wind energy guidelines (http://www.fws.gov/windenergy/) for minimizing impacts to migratory birds and bats. Guidance for minimizing impacts to migratory birds for projects including communications towers (e.g., cellular, digital television, radio, and emergency broadcast) can be found at: http://www.fws.gov/migratorybirds/CurrentBirdIssues/Hazards/towers/towers.htm; http://www.towerkill.com; and http://www.fws.gov/migratorybirds/CurrentBirdIssues/Hazards/towers/comtow.html. We appreciate your concern for threatened and endangered species. The Service encourages Federal agencies to include conservation of threatened and endangered species into their project planning to further the purposes of the Act. Please include the Consultation Tracking Number in the header of this letter with any request for consultation or correspondence about your project that you submit to our office. Attachment(s): Official Species List USFWS National Wildlife Refuges and Fish Hatcheries Migratory Birds Wetlands 06/21/2017 Event Code: 06E24000-2017-E-03054 1 Official Species List This list is provided pursuant to Section 7 of the Endangered Species Act, and fulfills the requirement for Federal agencies to "request of the Secretary of the Interior information whether any species which is listed or proposed to be listed may be present in the area of a proposed action". This species list is provided by: Colorado Ecological Services Field Office Denver Federal Center P.O. Box 25486 Denver, CO 80225-0486 (303) 236-4773 06/21/2017 Event Code: 06E24000-2017-E-03054 2 Project Summary Consultation Code: 06E24000-2017-SLI-1002 Event Code: 06E24000-2017-E-03054 Project Name: Spring Creek Place Project Type: LAND - ACQUISITION Project Description: This project will be developed on a platted tract located in the northeast quarter of Section 23, Township 7 North, Range 69 West of the 6th PM. The site is approximately 2.22 acres and contains two existing buildings with associated surface parking. The site is divided topographically with half of the site sloping to the northeast and the other half sloping to the northwest at 1% to 5%. The site is currently zoned C-G (General Commercial). The proposed land uses for this site will consist of standard multi-family residential housing and structured parking. Project Location: Approximate location of the project can be viewed in Google Maps: https://www.google.com/maps/place/40.560145196925504N105.07872485447731W Counties: Larimer, CO 06/21/2017 Event Code: 06E24000-2017-E-03054 3 Endangered Species Act Species There is a total of 14 threatened, endangered, or candidate species on your species list. Species on this list should be considered in an effects analysis for your project and could include species that exist in another geographic area. For example, certain fish may appear on the species list because a project could affect downstream species. Note that 5 of these species should be considered only under certain conditions. See the "Critical habitats" section below for those critical habitats that lie wholly or partially within your project area. Please contact the designated FWS office if you have questions. Mammals NAME STATUS Canada Lynx (Lynx canadensis) Population: Contiguous U.S. DPS There is a final critical habitat designated for this species. Your location is outside the designated critical habitat. Species profile: https://ecos.fws.gov/ecp/species/3652 Threatened North American Wolverine (Gulo gulo luscus) No critical habitat has been designated for this species. Species profile: https://ecos.fws.gov/ecp/species/5123 Proposed Threatened Preble's Meadow Jumping Mouse (Zapus hudsonius preblei) There is a final critical habitat designated for this species. Your location is outside the designated critical habitat. Species profile: https://ecos.fws.gov/ecp/species/4090 Threatened 06/21/2017 Event Code: 06E24000-2017-E-03054 4 Birds NAME STATUS Least Tern (Sterna antillarum) Population: interior pop. No critical habitat has been designated for this species. This species only needs to be considered under the following conditions: Water-related activities/use in the N. Platte, S. Platte and Laramie River Basins may affect listed species in Nebraska. Species profile: https://ecos.fws.gov/ecp/species/8505 Endangered Mexican Spotted Owl (Strix occidentalis lucida) There is a final critical habitat designated for this species. Your location is outside the designated critical habitat. Species profile: https://ecos.fws.gov/ecp/species/8196 Threatened Piping Plover (Charadrius melodus) Population: except Great Lakes watershed There is a final critical habitat designated for this species. Your location is outside the designated critical habitat. This species only needs to be considered under the following conditions: Water-related activities/use in the N. Platte, S. Platte and Laramie River Basins may affect listed species in Nebraska. Species profile: https://ecos.fws.gov/ecp/species/6039 Threatened Whooping Crane (Grus americana) Population: Wherever found, except where listed as an experimental population There is a final critical habitat designated for this species. Your location is outside the designated critical habitat. This species only needs to be considered under the following conditions: Water-related activities/use in the N. Platte, S. Platte and Laramie River Basins may affect listed species in Nebraska. Species profile: https://ecos.fws.gov/ecp/species/758 Endangered Fishes NAME STATUS Greenback Cutthroat Trout (Oncorhynchus clarki stomias) No critical habitat has been designated for this species. Species profile: https://ecos.fws.gov/ecp/species/2775 Threatened Pallid Sturgeon (Scaphirhynchus albus) No critical habitat has been designated for this species. This species only needs to be considered under the following conditions: Water-related activities/use in the N. Platte, S. Platte and Laramie River Basins may affect listed species in Nebraska. Species profile: https://ecos.fws.gov/ecp/species/7162 Endangered 06/21/2017 Event Code: 06E24000-2017-E-03054 5 Insects NAME STATUS Arapahoe Snowfly (Arsapnia arapahoe) No critical habitat has been designated for this species. Species profile: https://ecos.fws.gov/ecp/species/9141 Candidate Flowering Plants NAME STATUS Colorado Butterfly Plant (Gaura neomexicana var. coloradensis) There is a final critical habitat designated for this species. Your location is outside the designated critical habitat. Species profile: https://ecos.fws.gov/ecp/species/6110 Threatened North Park Phacelia (Phacelia formosula) No critical habitat has been designated for this species. Species profile: https://ecos.fws.gov/ecp/species/123 Endangered Ute Ladies'-tresses (Spiranthes diluvialis) No critical habitat has been designated for this species. Species profile: https://ecos.fws.gov/ecp/species/2159 Threatened Western Prairie Fringed Orchid (Platanthera praeclara) No critical habitat has been designated for this species. This species only needs to be considered under the following conditions: Water-related activities/use in the N. Platte, S. Platte and Laramie River Basins may affect listed species in Nebraska. Species profile: https://ecos.fws.gov/ecp/species/1669 Threatened Critical habitats There are no critical habitats within your project area. 06/21/2017 Event Code: 06E24000-2017-E-03054 1 USFWS National Wildlife Refuges And Fish Hatcheries Any activity proposed on National Wildlife Refuge lands must undergo a 'Compatibility Determination' conducted by the Refuge. Please contact the individual Refuges to discuss any questions or concerns. There are no refuges or fish hatcheries within your project area. 06/21/2017 Event Code: 06E24000-2017-E-03054 1 1. 2. 3. Migratory Birds Certain birds are protected under the Migratory Bird Treaty Act and the Bald and Golden Eagle Protection Act . Any activity that results in the take of migratory birds or eagles is prohibited unless authorized by the U.S. Fish and Wildlife Service . There are no provisions for allowing the take of migratory birds that are unintentionally killed or injured. Any person or organization who plans or conducts activities that may result in the take of migratory birds is responsible for complying with the appropriate regulations and implementing appropriate conservation measures. The Migratory Birds Treaty Act of 1918. The Bald and Golden Eagle Protection Act of 1940. 50 C.F.R. Sec. 10.12 and 16 U.S.C. Sec. 668(a) The migratory birds species listed below are species of particular conservation concern (e.g. Birds of Conservation Concern ) that may be potentially affected by activities in this location. It is not a list of every bird species you may find in this location, nor a guarantee that all of the bird species on this list will be found on or near this location. Although it is important to try to avoid and minimize impacts to all birds, special attention should be made to avoid and minimize impacts to birds of priority concern. To view available data on other bird species that may occur in your project area, please visit the AKN Histogram Tools and Other Bird Data Resources . To fully determine any potential effects to species, additional site-specific and project-specific information is often required. NAME SEASON(S) Prairie Falcon (Falco mexicanus) https://ecos.fws.gov/ecp/species/4736 On Land: Year-round Lark Bunting (Calamospiza melanocorys) On Land: Breeding American Bittern (Botaurus lentiginosus) https://ecos.fws.gov/ecp/species/6582 On Land: Breeding Dickcissel (Spiza americana) On Land: Breeding Mccown's Longspur (Calcarius mccownii) https://ecos.fws.gov/ecp/species/9292 On Land: Breeding Red-headed Woodpecker (Melanerpes erythrocephalus) On Land: Breeding Williamson's Sapsucker (Sphyrapicus thyroideus) On Land: Breeding 1 2 3 06/21/2017 Event Code: 06E24000-2017-E-03054 2 https://ecos.fws.gov/ecp/species/8832 Golden Eagle (Aquila chrysaetos) https://ecos.fws.gov/ecp/species/1680 On Land: Year-round Bald Eagle (Haliaeetus leucocephalus) https://ecos.fws.gov/ecp/species/1626 On Land: Year-round Black Rosy-finch (Leucosticte atrata) https://ecos.fws.gov/ecp/species/9460 On Land: Year-round Black Swift (Cypseloides niger) https://ecos.fws.gov/ecp/species/8878 On Land: Breeding Brewer's Sparrow (Spizella breweri) https://ecos.fws.gov/ecp/species/9291 On Land: Breeding Burrowing Owl (Athene cunicularia) https://ecos.fws.gov/ecp/species/9737 On Land: Breeding Cassin's Finch (Carpodacus cassinii) https://ecos.fws.gov/ecp/species/9462 On Land: Year-round Ferruginous Hawk (Buteo regalis) https://ecos.fws.gov/ecp/species/6038 On Land: Year-round Flammulated Owl (Otus flammeolus) https://ecos.fws.gov/ecp/species/7728 On Land: Breeding Lewis's Woodpecker (Melanerpes lewis) https://ecos.fws.gov/ecp/species/9408 On Land: Breeding Loggerhead Shrike (Lanius ludovicianus) https://ecos.fws.gov/ecp/species/8833 On Land: Breeding Long-billed Curlew (Numenius americanus) https://ecos.fws.gov/ecp/species/5511 On Land: Breeding Mountain Plover (Charadrius montanus) https://ecos.fws.gov/ecp/species/3638 On Land: Breeding Peregrine Falcon (Falco peregrinus) https://ecos.fws.gov/ecp/species/8831 On Land: Breeding Sage Thrasher (Oreoscoptes montanus) https://ecos.fws.gov/ecp/species/9433 On Land: Breeding Short-eared Owl (Asio flammeus) https://ecos.fws.gov/ecp/species/9295 On Land: Wintering 06/21/2017 Event Code: 06E24000-2017-E-03054 3 Swainson's Hawk (Buteo swainsoni) https://ecos.fws.gov/ecp/species/1098 On Land: Breeding Virginia's Warbler (Vermivora virginiae) https://ecos.fws.gov/ecp/species/9441 On Land: Breeding Western Grebe (aechmophorus occidentalis) https://ecos.fws.gov/ecp/species/6743 On Land: Breeding Willow Flycatcher (Empidonax traillii) https://ecos.fws.gov/ecp/species/3482 On Land: Breeding Rufous Hummingbird (selasphorus rufus) https://ecos.fws.gov/ecp/species/8002 On Land: Migrating Additional information can be found using the following links: Birds of Conservation Concern http://www.fws.gov/birds/management/managed-species/ birds-of-conservation-concern.php Conservation measures for birds http://www.fws.gov/birds/management/project-assessment-tools-and-guidance/ conservation-measures.php Year-round bird occurrence data http://www.birdscanada.org/birdmon/default/datasummaries.jsp 06/21/2017 Event Code: 06E24000-2017-E-03054 1 Wetlands 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 . There are no wetlands within your project area. WOODSPRING SUITES │ SWMP REPORT MARCH 26, 2019 APPENDIX D – SOILS INFORMATION Soil Information for All Uses Soil Properties and Qualities The Soil Properties and Qualities section includes various soil properties and qualities displayed as thematic maps with a summary table for the soil map units in the selected area of interest. A single value or rating for each map unit is generated by aggregating the interpretive ratings of individual map unit components. This aggregation process is defined for each property or quality. Soil Qualities and Features Soil qualities are behavior and performance attributes that are not directly measured, but are inferred from observations of dynamic conditions and from soil properties. Example soil qualities include natural drainage, and frost action. Soil features are attributes that are not directly part of the soil. Example soil features include slope and depth to restrictive layer. These features can greatly impact the use and management of the soil. Hydrologic Soil Group Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms. The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. 5 Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. Custom Soil Resource Report 6 7 Custom Soil Resource Report Map—Hydrologic Soil Group 4491880 4491900 4491920 4491940 4491960 4491980 4492000 4492020 4492040 4492060 4492080 4492100 4491880 4491900 4491920 4491940 4491960 4491980 4492000 4492020 4492040 4492060 4492080 4492100 499910 499930 499950 499970 499990 500010 500030 500050 500070 499910 499930 499950 499970 499990 500010 500030 500050 500070 40° 34' 46'' N 105° 0' 4'' W 40° 34' 46'' N 104° 59' 56'' W 40° 34' 39'' N 105° 0' 4'' W 40° 34' 39'' N 104° 59' 56'' W N Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84 0 50 100 200 300 Feet 0 15 30 60 90 Meters Map Scale: 1:1,120 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 Rating Polygons A A/D B B/D C C/D D Not rated or not available Soil Rating Lines A A/D B B/D C C/D D Not rated or not available Soil Rating Points A A/D B B/D C C/D D Not rated or not available 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 Table—Hydrologic Soil Group Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 73 Nunn clay loam, 0 to 1 percent slopes C 2.8 96.4% 74 Nunn clay loam, 1 to 3 percent slopes C 0.1 3.6% Totals for Area of Interest 3.0 100.0% Rating Options—Hydrologic Soil Group Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher Custom Soil Resource Report 9 Soil Information for All Uses Soil Properties and Qualities The Soil Properties and Qualities section includes various soil properties and qualities displayed as thematic maps with a summary table for the soil map units in the selected area of interest. A single value or rating for each map unit is generated by aggregating the interpretive ratings of individual map unit components. This aggregation process is defined for each property or quality. Soil Erosion Factors Soil Erosion Factors are soil properties and interpretations used in evaluating the soil for potential erosion. Example soil erosion factors can include K factor for the whole soil or on a rock free basis, T factor, wind erodibility group and wind erodibility index. K Factor, Whole Soil Erosion factor K indicates the susceptibility of a soil to sheet and rill erosion by water. Factor K is one of six factors used in the Universal Soil Loss Equation (USLE) and the Revised Universal Soil Loss Equation (RUSLE) to predict the average annual rate of soil loss by sheet and rill erosion in tons per acre per year. The estimates are based primarily on percentage of silt, sand, and organic matter and on soil structure and saturated hydraulic conductivity (Ksat). Values of K range from 0.02 to 0.69. Other factors being equal, the higher the value, the more susceptible the soil is to sheet and rill erosion by water. "Erosion factor Kw (whole soil)" indicates the erodibility of the whole soil. The estimates are modified by the presence of rock fragments. 5 6 Custom Soil Resource Report Map—K Factor, Whole Soil 4491880 4491900 4491920 4491940 4491960 4491980 4492000 4492020 4492040 4492060 4492080 4492100 4491880 4491900 4491920 4491940 4491960 4491980 4492000 4492020 4492040 4492060 4492080 4492100 499910 499930 499950 499970 499990 500010 500030 500050 500070 499910 499930 499950 499970 499990 500010 500030 500050 500070 40° 34' 46'' N 105° 0' 4'' W 40° 34' 46'' N 104° 59' 56'' W 40° 34' 39'' N 105° 0' 4'' W 40° 34' 39'' N 104° 59' 56'' W N Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84 0 50 100 200 300 Feet 0 15 30 60 90 Meters Map Scale: 1:1,120 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 Rating Polygons .02 .05 .10 .15 .17 .20 .24 .28 .32 .37 .43 .49 .55 .64 Not rated or not available Soil Rating Lines .02 .05 .10 .15 .17 .20 .24 .28 .32 .37 .43 .49 .55 .64 Not rated or not available Soil Rating Points .02 .05 .10 .15 .17 .20 .24 .28 .32 .37 .43 .49 .55 .64 Not rated or not available Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Table—K Factor, Whole Soil Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 73 Nunn clay loam, 0 to 1 percent slopes .32 2.8 96.4% 74 Nunn clay loam, 1 to 3 percent slopes .28 0.1 3.6% Totals for Area of Interest 3.0 100.0% Rating Options—K Factor, Whole Soil Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher Layer Options (Horizon Aggregation Method): Surface Layer (Not applicable) Custom Soil Resource Report 8 Soil Information for All Uses Soil Properties and Qualities The Soil Properties and Qualities section includes various soil properties and qualities displayed as thematic maps with a summary table for the soil map units in the selected area of interest. A single value or rating for each map unit is generated by aggregating the interpretive ratings of individual map unit components. This aggregation process is defined for each property or quality. Soil Erosion Factors Soil Erosion Factors are soil properties and interpretations used in evaluating the soil for potential erosion. Example soil erosion factors can include K factor for the whole soil or on a rock free basis, T factor, wind erodibility group and wind erodibility index. Wind Erodibility Group A wind erodibility group (WEG) consists of soils that have similar properties affecting their susceptibility to wind erosion in cultivated areas. The soils assigned to group 1 are the most susceptible to wind erosion, and those assigned to group 8 are the least susceptible. 5 6 Custom Soil Resource Report Map—Wind Erodibility Group 4491880 4491900 4491920 4491940 4491960 4491980 4492000 4492020 4492040 4492060 4492080 4492100 4491880 4491900 4491920 4491940 4491960 4491980 4492000 4492020 4492040 4492060 4492080 4492100 499910 499930 499950 499970 499990 500010 500030 500050 500070 499910 499930 499950 499970 499990 500010 500030 500050 500070 40° 34' 46'' N 105° 0' 4'' W 40° 34' 46'' N 104° 59' 56'' W 40° 34' 39'' N 105° 0' 4'' W 40° 34' 39'' N 104° 59' 56'' W N Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84 0 50 100 200 300 Feet 0 15 30 60 90 Meters Map Scale: 1:1,120 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 Rating Polygons 1 2 3 4 4L 5 6 7 8 Not rated or not available Soil Rating Lines 1 2 3 4 4L 5 6 7 8 Not rated or not available Soil Rating Points 1 2 3 4 4L 5 6 7 8 Not rated or not available 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) Table—Wind Erodibility Group Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 73 Nunn clay loam, 0 to 1 percent slopes 6 2.8 96.4% 74 Nunn clay loam, 1 to 3 percent slopes 6 0.1 3.6% Totals for Area of Interest 3.0 100.0% Rating Options—Wind Erodibility Group Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Lower Custom Soil Resource Report 8 WOODSPRING SUITES │ SWMP REPORT MARCH 26, 2019 APPENDIX E – IDENTIFICATION OF POLLUTANT SOURCES 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 WOODSPRING SUITES │ SWMP REPORT MARCH 26, 2019 APPENDIX F – CONTROL MEASURE DETAILS BMPs provided for reference based upon the City and Urban Drainage and Flood Control District published standard details. Contractor may utilize these standard practices or approved alternate methods to minimize erosion and sediment control related to construction activities. Concrete Washout Area Construction Fence Construction Phasing/Sequencing Covering Outdoor Storage and Handling Areas Curb Socks Dewatering Operations Good Housekeeping Practices Rock Sock Silt Fence Spill Prevention Containment and Control Stabilized Staging Area Stockpile Management Street Sweeping Temporary and Permanent Seeding Vehicle Maintenance and Fueling Vehicle Tracking Control Wind Erosion / Dust Control Concrete Washout Area (CWA) MM-1 November 2010 Urban Drainage and Flood Control District CWA-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph CWA-1. Example of concrete washout area. Note gravel tracking pad for access and sign. Description Concrete waste management involves designating and properly managing a specific area of the construction site as a concrete washout area. A concrete washout area can be created using one of several approaches designed to receive wash water from washing of tools and concrete mixer chutes, liquid concrete waste from dump trucks, mobile batch mixers, or pump trucks. Three basic approaches are available: excavation of a pit in the ground, use of an above ground storage area, or use of prefabricated haul- away concrete washout containers. Surface discharges of concrete washout water from construction sites are prohibited. Appropriate Uses Concrete washout areas must be designated on all sites that will generate concrete wash water or liquid concrete waste from onsite concrete mixing or concrete delivery. Because pH is a pollutant of concern for washout activities, when unlined pits are used for concrete washout, the soil must have adequate buffering capacity to result in protection of state groundwater standards; otherwise, a liner/containment must be used. The following management practices are recommended to prevent an impact from unlined pits to groundwater:  The use of the washout site should be temporary (less than 1 year), and  The washout site should be not be located in an area where shallow groundwater may be present, such as near natural drainages, springs, or wetlands. Design and Installation Concrete washout activities must be conducted in a manner that does not contribute pollutants to surface waters or stormwater runoff. Concrete washout areas may be lined or unlined excavated pits in the ground, commercially manufactured prefabricated washout containers, or aboveground holding areas constructed of berms, sandbags or straw bales with a plastic liner. Although unlined washout areas may be used, lined pits may be required to protect groundwater under certain conditions. Do not locate an unlined washout area within 400 feet of any natural drainage pathway or waterbody or within 1,000 feet of any wells or drinking water sources. Even for lined concrete washouts, it is advisable to locate the facility away from waterbodies and drainage paths. If site constraints make these Concrete Washout Area Functions Erosion Control No Sediment Control No Site/Material Management Yes MM-1 Concrete Washout Area (CWA) CWA-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 setbacks infeasible or if highly permeable soils exist in the area, then the pit must be installed with an impermeable liner (16 mil minimum thickness) or surface storage alternatives using prefabricated concrete washout devices or a lined aboveground storage area should be used. Design details with notes are provided in Detail CWA-1 for pits and CWA-2 for aboveground storage areas. Pre-fabricated concrete washout container information can be obtained from vendors. Maintenance and Removal A key consideration for concrete washout areas is to ensure that adequate signage is in place identifying the location of the washout area. Part of inspecting and maintaining washout areas is ensuring that adequate signage is provided and in good repair and that the washout area is being used, as opposed to washout in non-designated areas of the site. Remove concrete waste in the washout area, as needed to maintain BMP function (typically when filled to about two-thirds of its capacity). Collect concrete waste and deliver offsite to a designated disposal location. Upon termination of use of the washout site, accumulated solid waste, including concrete waste and any contaminated soils, must be removed from the site to prevent on-site disposal of solid waste. If the wash water is allowed to evaporate and the concrete hardens, it may be recycled. Photograph CWA-3. Earthen concrete washout. Photo courtesy of CDOT. Photograph CWA-2. Prefabricated concrete washout. Photo courtesy of CDOT. Concrete Washout Area (CWA) MM-1 November 2010 Urban Drainage and Flood Control District CWA-3 Urban Storm Drainage Criteria Manual Volume 3 MM-1 Concrete Washout Area (CWA) CWA-4 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Construction Fence (CF) SM-3 November 2010 Urban Drainage and Flood Control District CF-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph CF-1. A construction fence helps delineate areas where existing vegetation is being protected. Photo courtesy of Douglas County. Description A construction fence restricts site access to designated entrances and exits, delineates construction site boundaries, and keeps construction out of sensitive areas such as natural areas to be preserved as open space, wetlands and riparian areas. Appropriate Uses A construction fence can be used to delineate the site perimeter and locations within the site where access is restricted to protect natural resources such as wetlands, waterbodies, trees, and other natural areas of the site that should not be disturbed. If natural resource protection is an objective, then the construction fencing should be used in combination with other perimeter control BMPs such as silt fence, sediment control logs or similar measures. Design and Installation Construction fencing may be chain link or plastic mesh and should be installed following manufacturer’s recommendations. See Detail CF-1 for typical installations. Do not place construction fencing in areas within work limits of machinery. Maintenance and Removal  Inspect fences for damage; repair or replace as necessary.  Fencing should be tight and any areas with slumping or fallen posts should be reinstalled.  Fencing should be removed once construction is complete. Construction Fence Functions Erosion Control No Sediment Control No Site/Material Management Yes SM-3 Construction Fence (CF) CF-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Construction Fence (CF) SM-3 November 2010 Urban Drainage and Flood Control District CF-3 Urban Storm Drainage Criteria Manual Volume 3 Construction Phasing/Sequencing (CP) SM-1 November 2010 Urban Drainage and Flood Control District CP-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph CP-1. Construction phasing to avoid disturbing the entire area at one time. Photo courtesy of WWE. Description Effective construction site management to minimize erosion and sediment transport includes attention to construction phasing, scheduling, and sequencing of land disturbing activities. On most construction projects, erosion and sediment controls will need to be adjusted as the project progresses and should be documented in the SWMP. Construction phasing refers to disturbing only part of a site at a time to limit the potential for erosion from dormant parts of a site. Grading activities and construction are completed and soils are effectively stabilized on one part of a site before grading and construction begins on another portion of the site. Construction sequencing or scheduling refers to a specified work schedule that coordinates the timing of land disturbing activities and the installation of erosion and sediment control practices. Appropriate Uses All construction projects can benefit from upfront planning to phase and sequence construction activities to minimize the extent and duration of disturbance. Larger projects and linear construction projects may benefit most from construction sequencing or phasing, but even small projects can benefit from construction sequencing that minimizes the duration of disturbance. Typically, erosion and sediment controls needed at a site will change as a site progresses through the major phases of construction. Erosion and sediment control practices corresponding to each phase of construction must be documented in the SWMP. Design and Installation BMPs appropriate to the major phases of development should be identified on construction drawings. In some cases, it will be necessary to provide several drawings showing construction-phase BMPs placed according to stages of development (e.g., clearing and grading, utility installation, active construction, final stabilization). Some municipalities in the Denver area set maximum sizes for disturbed area associated with phases of a construction project. Additionally, requirements for phased construction drawings vary among local governments within the UDFCD boundary. Some local governments require separate erosion and sediment control drawings for initial BMPs, interim conditions (in active construction), and final stabilization. Construction Scheduling Functions Erosion Control Moderate Sediment Control Moderate Site/Material Management Yes SM-1 Construction Phasing/Sequencing (CP) CP-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Typical construction phasing BMPs include:  Limit the amount of disturbed area at any given time on a site to the extent practical. For example, a 100-acre subdivision might be constructed in five phases of 20 acres each.  If there is carryover of stockpiled material from one phase to the next, position carryover material in a location easily accessible for the pending phase that will not require disturbance of stabilized areas to access the stockpile. Particularly with regard to efforts to balance cut and fill at a site, careful planning for location of stockpiles is important. Typical construction sequencing BMPs include:  Sequence construction activities to minimize duration of soil disturbance and exposure. For example, when multiple utilities will occupy the same trench, schedule installation so that the trench does not have to be closed and opened multiple times.  Schedule site stabilization activities (e.g., landscaping, seeding and mulching, installation of erosion control blankets) as soon as feasible following grading.  Install initial erosion and sediment control practices before construction begins. Promptly install additional BMPs for inlet protection, stabilization, etc., as construction activities are completed. Table CP-1 provides typical sequencing of construction activities and associated BMPs. Maintenance and Removal When the construction schedule is altered, erosion and sediment control measures in the SWMP and construction drawings should be appropriately adjusted to reflect actual "on the ground" conditions at the construction site. Be aware that changes in construction schedules can have significant implications for site stabilization, particularly with regard to establishment of vegetative cover. Construction Phasing/Sequencing (CP) SM-1 November 2010 Urban Drainage and Flood Control District CP-3 Urban Storm Drainage Criteria Manual Volume 3 Table CP-1. Typical Phased BMP Installation for Construction Projects Project Phase BMPs Pre- disturbance, Site Access  Install sediment controls downgradient of access point (on paved streets this may consist of inlet protection).  Establish vehicle tracking control at entrances to paved streets. Fence as needed.  Use construction fencing to define the boundaries of the project and limit access to areas of the site that are not to be disturbed. Note: it may be necessary to protect inlets in the general vicinity of the site, even if not downgradient, if there is a possibility that sediment tracked from the site could contribute to the inlets. Site Clearing and Grubbing  Install perimeter controls as needed on downgradient perimeter of site (silt fence, wattles, etc).  Limit disturbance to those areas planned for disturbance and protect undisturbed areas within the site (construction fence, flagging, etc).  Preserve vegetative buffer at site perimeter.  Create stabilized staging area.  Locate portable toilets on flat surfaces away from drainage paths. Stake in areas susceptible to high winds.  Construct concrete washout area and provide signage.  Establish waste disposal areas.  Install sediment basins.  Create dirt perimeter berms and/or brush barriers during grubbing and clearing.  Separate and stockpile topsoil, leave roughened and/or cover.  Protect stockpiles with perimeter control BMPs. Stockpiles should be located away from drainage paths and should be accessed from the upgradient side so that perimeter controls can remain in place on the downgradient side. Use erosion control blankets, temporary seeding, and/or mulch for stockpiles that will be inactive for an extended period.  Leave disturbed area of site in a roughened condition to limit erosion. Consider temporary revegetation for areas of the site that have been disturbed but that will be inactive for an extended period.  Water to minimize dust but not to the point that watering creates runoff. SM-1 Construction Phasing/Sequencing (CP) CP-4 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Project Phase BMPs Utility And Infrastructure Installation In Addition to the Above BMPs:  Close trench as soon as possible (generally at the end of the day).  Use rough-cut street control or apply road base for streets that will not be promptly paved.  Provide inlet protection as streets are paved and inlets are constructed.  Protect and repair BMPs, as necessary.  Perform street sweeping as needed. Building Construction In Addition to the Above BMPs:  Implement materials management and good housekeeping practices for home building activities.  Use perimeter controls for temporary stockpiles from foundation excavations.  For lots adjacent to streets, lot-line perimeter controls may be necessary at the back of curb. Final Grading In Addition to the Above BMPs:  Remove excess or waste materials.  Remove stored materials. Final Stabilization In Addition to the Above BMPs:  Seed and mulch/tackify.  Seed and install blankets on steep slopes.  Remove all temporary BMPs when site has reached final stabilization. Covering Outdoor Storage and Handling Areas S-1 November 2010 Urban Drainage and Flood Control District CS-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph CS-1. Covered truck loading dock helps reduce exposure of materials to runoff. Description When raw materials, byproducts, finished products, storage tanks, and other materials are stored or handled outdoors, stormwater runoff that comes in contact with the materials can become contaminated. Proactively covering storage and handling areas can be an effective source control for such areas. Coverings can be permanent or temporary and consist of tarp, plastic sheeting, roofing, enclosed structures, or other approaches that reduce exposure of materials to rainfall, runoff, and wind. Appropriate Uses Covering is appropriate for areas where solids (e.g., gravel, salt, compost, building materials) or liquids (e.g., oil, gas, tar) are stored, prepared, or transferred. Consider covering the following areas:  Loading and Unloading: Loading and unloading operations usually take place outside on docks, truck terminals, or outside storage or staging areas at industrial and commercial sites. Materials spilled, leaked, or lost during loading and unloading may collect in the soil or other surfaces and be carried away by runoff, or when the area is cleaned. In addition to spills to the ground surface, rainfall may wash pollutants off machinery used to unload and load materials. Materials may be spilled during transfer between storage facilities and truck or rail car during pumping of liquids, pneumatic transfer of dry chemicals, mechanical transfer using conveyor systems, or transfers of bags, boxes, drums, or other containers by forklift, trucks, or other material handling equipment.  Aboveground Tanks/Liquid Storage: Accidental releases of chemicals from above-ground liquid storage tanks can contaminate stormwater with a variety of pollutants. Several common causes of accidental releases from above-ground tanks include: external corrosion and structural failure, problems due to improper installation, spills and overfills due to operator error, failure of piping systems, and leaks or spills during pumping of liquids or gases between trucks or rail cars to a storage facility.  Outside Manufacturing: Common outside manufacturing activities may include parts assembly, rock grinding or crushing, metals painting or coating, grinding or sanding, degreasing, concrete manufacturing, parts cleaning or operations that use hazardous materials. These activities can result in dry deposition of dust, metal and wood shavings and liquid discharges of dripping or leaking fluids from equipment or processes and other residuals being washed away in storm runoff. In addition to the manufacturing process, outside storage of materials and waste products may occur in conjunction with outside manufacturing.  Waste Management: Wastes spilled, leached, or lost from outdoor waste management areas or outside manufacturing activities may accumulate in soils or on other surfaces and be carried away by rainfall runoff. There is also the potential for liquid wastes from surface impoundments to overflow to surface waters or soak the soil where they can be picked up by runoff. Possible stormwater S-1 Covering Outdoor Storage and Handling Areas CS-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 contaminants include toxic compounds, oil and grease, oxygen-demanding organics, paints and solvents, heavy metals and high levels of suspended solids. Lack of coverage of waste receptacles can result in rainwater seeping through the material and collecting contaminants or the material being blown around the site and into the stormwater collection system. Typical contaminant sources include: landfills, waste piles, wastewater and solid waste treatment and disposal, land application sites, dumpsters, or unlabeled drums.  Outside Storage of Materials: Raw materials, intermediate products, byproducts, process residuals, finished products, containers, and materials storage areas can be sources of pollutants such as metals, oils and grease, sediment and other contaminants. Pollutant transport can occur when solid materials wash off or dissolve into water, or when spills or leaks occur.  Salt Storage: Salt left exposed to rain or snow may migrate to the storm sewer or contaminate soils. Salt spilled or blown onto the ground during loading or unloading will dissolve in stormwater runoff. Stormwater contaminated with salt in high concentrations can be harmful to vegetation, aquatic life and groundwater quality. Typical contaminant sources include salt stored outside in piles or bags, salt loading and unloading areas, and salt/sand storage piles used for deicing operations. Practice Guidelines  Where practical, conduct operations indoors. Where impractical, select an appropriate temporary or permanent covering to reduce exposure of materials to rainfall and runoff.  The type of covering selected depends on a variety of factors such as the type and size of activity being conducted and materials involved. Types of cover range from relatively inexpensive tarps and plastic sheeting to overhead structures or fully enclosed buildings equipped with ventilation, lighting, etc.  Covering practices should be combined with Good Housekeeping BMPs to be most effective. Spill containment berms are also often needed at industrial sites.  Measures such as tarps and plastic sheets typically require more frequent inspection and maintenance than constructed facilities. Dewatering Operations (DW) SM-9 November 2010 Urban Drainage and Flood Control District DW-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph DW-1. A relatively small dewatering operation using straw bales and a dewatering bag. Photograph DW-2. Dewatering bags used for a relatively large dewatering operation. Description The BMPs selected for construction dewatering vary depending on site- specific features such as soils, topography, anticipated discharge quantities, and discharge location. Dewatering typically involves pumping water from an inundated area to a BMP, and then downstream to a receiving waterway, sediment basin, or well- vegetated area. Dewatering typically involves use of several BMPs in sequence. Appropriate Uses Dewatering operations are used when an area of the construction site needs to be dewatered as the result of a large storm event, groundwater, or existing ponding conditions. This can occur during deep excavation, utility trenching, and wetland or pond excavation. Design and Installation Dewatering techniques will vary depending on site conditions. However, all dewatering discharges must be treated to remove sediment before discharging from the construction site. Discharging water into a sediment trap or basin is an acceptable treatment option. Water may also be treated using a dewatering filter bag, and a series of straw bales or sediment logs. If these previous options are not feasible due to space or the ability to passively treat the discharge to remove sediment, then a settling tank or an active treatment system may need to be utilized. Settling tanks are manufactured tanks with a series of baffles to promote settling. Flocculants can also be added to the tank to induce more rapid settling. This is an approach sometimes used on highly urbanized construction sites. Contact the state agency for special requirements prior to using flocculents and land application techniques. Some commonly used methods to handle the pumped water without surface discharge include land application to vegetated areas through a perforated discharge hose (i.e., the "sprinkler method") or dispersal from a water truck for dust control. Dewatering Operations Functions Erosion Control Moderate Sediment Control Yes Site/Material Management Yes SM-9 Dewatering Operations (DW) DW-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Dewatering discharges to non-paved areas must minimize the potential for scour at the discharge point either using a velocity dissipation device or dewatering filter bag. Design Details are provided for these types of dewatering situations: DW-1. Dewatering for Pond Already Filled with Water DW-2 Dewatering Sump for Submersed Pump DW-3 Sump Discharge Settling Basin DW-4 Dewatering Filter Bag Maintenance and Removal When a sediment basin or trap is used to enable settling of sediment from construction dewatering discharges, inspect the basin for sediment accumulation. Remove sediment prior to the basin or trap reaching half full. Inspect treatment facilities prior to any dewatering activity. If using a sediment control practice such as a sediment trap or basin, complete all maintenance requirements as described in the fact sheets prior to dewatering. Properly dispose of used dewatering bags, as well as sediment removed from the dewatering BMPs. Depending on the size of the dewatering operation, it may also be necessary to revegetate or otherwise stabilize the area where the dewatering operation was occurring. Dewatering Operations (DW) SM-9 November 2010 Urban Drainage and Flood Control District DW-3 Urban Storm Drainage Criteria Manual Volume 3 SM-9 Dewatering Operations (DW) DW-4 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Dewatering Operations (DW) SM-9 November 2010 Urban Drainage and Flood Control District DW-5 Urban Storm Drainage Criteria Manual Volume 3 Good Housekeeping Practices (GH) MM-3 November 2010 Urban Drainage and Flood Control District GH-1 Urban Storm Drainage Criteria Manual Volume 3 Photographs GH-1 and GH-2. Proper materials storage and secondary containment for fuel tanks are important good housekeeping practices. Photos courtesy of CDOT and City of Aurora. Description Implement construction site good housekeeping practices to prevent pollution associated with solid, liquid and hazardous construction-related materials and wastes. Stormwater Management Plans (SWMPs) should clearly specify BMPs including these good housekeeping practices:  Provide for waste management.  Establish proper building material staging areas.  Designate paint and concrete washout areas.  Establish proper equipment/vehicle fueling and maintenance practices.  Control equipment/vehicle washing and allowable non- stormwater discharges.  Develop a spill prevention and response plan. Acknowledgement: This Fact Sheet is based directly on EPA guidance provided in Developing Your Stormwater Pollution Prevent Plan (EPA 2007). Appropriate Uses Good housekeeping practices are necessary at all construction sites. Design and Installation The following principles and actions should be addressed in SWMPs:  Provide for Waste Management. Implement management procedures and practices to prevent or reduce the exposure and transport of pollutants in stormwater from solid, liquid and sanitary wastes that will be generated at the site. Practices such as trash disposal, recycling, proper material handling, and cleanup measures can reduce the potential for stormwater runoff to pick up construction site wastes and discharge them to surface waters. Implement a comprehensive set of waste-management practices for hazardous or toxic materials, such as paints, solvents, petroleum products, pesticides, wood preservatives, acids, roofing tar, and other materials. Practices should include storage, handling, inventory, and cleanup procedures, in case of spills. Specific practices that should be considered include: Solid or Construction Waste o Designate trash and bulk waste-collection areas on- site. Good Housekeeping Functions Erosion Control No Sediment Control No Site/Material Management Yes MM-3 Good Housekeeping Practices (GH) GH-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Photograph GH-3. Locate portable toilet facilities on level surfaces away from waterways and storm drains. Photo courtesy of WWE. o Recycle materials whenever possible (e.g., paper, wood, concrete, oil). o Segregate and provide proper disposal options for hazardous material wastes. o Clean up litter and debris from the construction site daily. o Locate waste-collection areas away from streets, gutters, watercourses, and storm drains. Waste- collection areas (dumpsters, and such) are often best located near construction site entrances to minimize traffic on disturbed soils. Consider secondary containment around waste collection areas to minimize the likelihood of contaminated discharges. o Empty waste containers before they are full and overflowing. Sanitary and Septic Waste o Provide convenient, well-maintained, and properly located toilet facilities on-site. o Locate toilet facilities away from storm drain inlets and waterways to prevent accidental spills and contamination of stormwater. o Maintain clean restroom facilities and empty portable toilets regularly. o Where possible, provide secondary containment pans under portable toilets. o Provide tie-downs or stake-downs for portable toilets. o Educate employees, subcontractors, and suppliers on locations of facilities. o Treat or dispose of sanitary and septic waste in accordance with state or local regulations. Do not discharge or bury wastewater at the construction site. o Inspect facilities for leaks. If found, repair or replace immediately. o Special care is necessary during maintenance (pump out) to ensure that waste and/or biocide are not spilled on the ground. Hazardous Materials and Wastes o Develop and implement employee and subcontractor education, as needed, on hazardous and toxic waste handling, storage, disposal, and cleanup. o Designate hazardous waste-collection areas on-site. o Place all hazardous and toxic material wastes in secondary containment. Good Housekeeping Practices (GH) MM-3 November 2010 Urban Drainage and Flood Control District GH-3 Urban Storm Drainage Criteria Manual Volume 3 o Hazardous waste containers should be inspected to ensure that all containers are labeled properly and that no leaks are present.  Establish Proper Building Material Handling and Staging Areas. The SWMP should include comprehensive handling and management procedures for building materials, especially those that are hazardous or toxic. Paints, solvents, pesticides, fuels and oils, other hazardous materials or building materials that have the potential to contaminate stormwater should be stored indoors or under cover whenever possible or in areas with secondary containment. Secondary containment measures prevent a spill from spreading across the site and may include dikes, berms, curbing, or other containment methods. Secondary containment techniques should also ensure the protection of groundwater. Designate staging areas for activities such as fueling vehicles, mixing paints, plaster, mortar, and other potential pollutants. Designated staging areas enable easier monitoring of the use of materials and clean up of spills. Training employees and subcontractors is essential to the success of this pollution prevention principle. Consider the following specific materials handling and staging practices: o Train employees and subcontractors in proper handling and storage practices. o Clearly designate site areas for staging and storage with signs and on construction drawings. Staging areas should be located in areas central to the construction site. Segment the staging area into sub-areas designated for vehicles, equipment, or stockpiles. Construction entrances and exits should be clearly marked so that delivery vehicles enter/exit through stabilized areas with vehicle tracking controls (See Vehicle Tracking Control Fact Sheet). o Provide storage in accordance with Spill Protection, Control and Countermeasures (SPCC) requirements and plans and provide cover and impermeable perimeter control, as necessary, for hazardous materials and contaminated soils that must be stored on site. o Ensure that storage containers are regularly inspected for leaks, corrosion, support or foundation failure, or other signs of deterioration and tested for soundness. o Reuse and recycle construction materials when possible.  Designate Concrete Washout Areas. Concrete contractors should be encouraged to use the washout facilities at their own plants or dispatch facilities when feasible; however, concrete washout commonly occurs on construction sites. If it is necessary to provide for concrete washout areas on- site, designate specific washout areas and design facilities to handle anticipated washout water. Washout areas should also be provided for paint and stucco operations. Because washout areas can be a source of pollutants from leaks or spills, care must be taken with regard to their placement and proper use. See the Concrete Washout Area Fact Sheet for detailed guidance. Both self-constructed and prefabricated washout containers can fill up quickly when concrete, paint, and stucco work are occurring on large portions of the site. Be sure to check for evidence that contractors are using the washout areas and not dumping materials onto the ground or into drainage facilities. If the washout areas are not being used regularly, consider posting additional signage, relocating the facilities to more convenient locations, or providing training to workers and contractors. When concrete, paint, or stucco is part of the construction process, consider these practices which will help prevent contamination of stormwater. Include the locations of these areas and the maintenance and inspection procedures in the SWMP. MM-3 Good Housekeeping Practices (GH) GH-4 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 o Do not washout concrete trucks or equipment into storm drains, streets, gutters, uncontained areas, or streams. Only use designated washout areas. o Establish washout areas and advertise their locations with signs. Ensure that signage remains in good repair. o Provide adequate containment for the amount of wash water that will be used. o Inspect washout structures daily to detect leaks or tears and to identify when materials need to be removed. o Dispose of materials properly. The preferred method is to allow the water to evaporate and to recycle the hardened concrete. Full service companies may provide dewatering services and should dispose of wastewater properly. Concrete wash water can be highly polluted. It should not be discharged to any surface water, storm sewer system, or allowed to infiltrate into the ground in the vicinity of waterbodies. Washwater should not be discharged to a sanitary sewer system without first receiving written permission from the system operator.  Establish Proper Equipment/Vehicle Fueling and Maintenance Practices. Create a clearly designated on-site fueling and maintenance area that is clean and dry. The on-site fueling area should have a spill kit, and staff should know how to use it. If possible, conduct vehicle fueling and maintenance activities in a covered area. Consider the following practices to help prevent the discharge of pollutants to stormwater from equipment/vehicle fueling and maintenance. Include the locations of designated fueling and maintenance areas and inspection and maintenance procedures in the SWMP. o Train employees and subcontractors in proper fueling procedures (stay with vehicles during fueling, proper use of pumps, emergency shutoff valves, etc.). o Inspect on-site vehicles and equipment regularly for leaks, equipment damage, and other service problems. o Clearly designate vehicle/equipment service areas away from drainage facilities and watercourses to prevent stormwater run-on and runoff. o Use drip pans, drip cloths, or absorbent pads when replacing spent fluids. o Collect all spent fluids, store in appropriate labeled containers in the proper storage areas, and recycle fluids whenever possible.  Control Equipment/Vehicle Washing and Allowable Non-Stormwater Discharges. Implement practices to prevent contamination of surface and groundwater from equipment and vehicle wash water. Representative practices include: o Educate employees and subcontractors on proper washing procedures. o Use off-site washing facilities, when available. o Clearly mark the washing areas and inform workers that all washing must occur in this area. o Contain wash water and treat it using BMPs. Infiltrate washwater when possible, but maintain separation from drainage paths and waterbodies. Good Housekeeping Practices (GH) MM-3 November 2010 Urban Drainage and Flood Control District GH-5 Urban Storm Drainage Criteria Manual Volume 3 o Use high-pressure water spray at vehicle washing facilities without detergents. Water alone can remove most dirt adequately. o Do not conduct other activities, such as vehicle repairs, in the wash area. o Include the location of the washing facilities and the inspection and maintenance procedures in the SWMP.  Develop a Spill Prevention and Response Plan. Spill prevention and response procedures must be identified in the SWMP. Representative procedures include identifying ways to reduce the chance of spills, stop the source of spills, contain and clean up spills, dispose of materials contaminated by spills, and train personnel responsible for spill prevention and response. The plan should also specify material handling procedures and storage requirements and ensure that clear and concise spill cleanup procedures are provided and posted for areas in which spills may potentially occur. When developing a spill prevention plan, include the following: o Note the locations of chemical storage areas, storm drains, tributary drainage areas, surface waterbodies on or near the site, and measures to stop spills from leaving the site. o Provide proper handling and safety procedures for each type of waste. Keep Material Safety Data Sheets (MSDSs) for chemical used on site with the SWMP. o Establish an education program for employees and subcontractors on the potential hazards to humans and the environment from spills and leaks. o Specify how to notify appropriate authorities, such as police and fire departments, hospitals, or municipal sewage treatment facilities to request assistance. Emergency procedures and contact numbers should be provided in the SWMP and posted at storage locations. o Describe the procedures, equipment and materials for immediate cleanup of spills and proper disposal. o Identify personnel responsible for implementing the plan in the event of a spill. Update the spill prevention plan and clean up materials as changes occur to the types of chemicals stored and used at the facility. MM-3 Good Housekeeping Practices (GH) GH-6 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Spill Prevention, Control, and Countermeasure (SPCC) Plan Construction sites may be subject to 40 CFR Part 112 regulations that require the preparation and implementation of a SPCC Plan to prevent oil spills from aboveground and underground storage tanks. The facility is subject to this rule if it is a non-transportation-related facility that:  Has a total storage capacity greater than 1,320 gallons or a completely buried storage capacity greater than 42,000 gallons.  Could reasonably be expected to discharge oil in quantities that may be harmful to navigable waters of the United States and adjoining shorelines. Furthermore, if the facility is subject to 40 CFR Part 112, the SWMP should reference the SPCC Plan. To find out more about SPCC Plans, see EPA's website on SPPC at www.epa.gov/oilspill/spcc.htm. Reporting Oil Spills In the event of an oil spill, contact the National Response Center toll free at 1-800-424- 8802 for assistance, or for more details, visit their website: www.nrc.uscg.mil. Maintenance and Removal Effective implementation of good housekeeping practices is dependent on clear designation of personnel responsible for supervising and implementing good housekeeping programs, such as site cleanup and disposal of trash and debris, hazardous material management and disposal, vehicle and equipment maintenance, and other practices. Emergency response "drills" may aid in emergency preparedness. Checklists may be helpful in good housekeeping efforts. Staging and storage areas require permanent stabilization when the areas are no longer being used for construction-related activities. Construction-related materials, debris and waste must be removed from the construction site once construction is complete. Design Details See the following Fact Sheets for related Design Details: MM-1 Concrete Washout Area MM-2 Stockpile Management SM-4 Vehicle Tracking Control Design details are not necessary for other good housekeeping practices; however, be sure to designate where specific practices will occur on the appropriate construction drawings. Good Housekeeping S-5 November 2010 Urban Drainage and Flood Control District GH-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph GH-1. Use dry clean-up methods to remove spilled materials. Photo courtesy of Colorado Nonpoint Source Program. Description Good housekeeping practices are designed to maintain a clean and orderly work environment. The most effective first steps towards preventing pollution in stormwater from work sites simply involve using common sense to improve the facility’s basic housekeeping methods. Poor housekeeping practices result in increased waste and potential for stormwater contamination. A clean and orderly work site reduces the possibility of accidental spills caused by mishandling of chemicals and equipment and should reduce safety hazards to personnel. A well-maintained material and chemical storage area will reduce the possibility of stormwater mixing with pollutants. Some simple procedures a facility can use to promote good housekeeping include improved operation and maintenance of machinery and processes, material storage practices, material inventory controls, routine and regular clean-up schedules, maintaining well organized work areas, signage, and educational programs for employees and the general public about all of these practices. Appropriate Uses Good housekeeping practices require education and training, typically targeted to industries and businesses, municipal employees, as well as the general public. Practice Guidelines Good housekeeping practices include these general areas:  Operation and Maintenance  Material Storage  Material Inventory  Training and Participation. Operation and Maintenance Consider implementing the following practices:  Maintain dry and clean floors and ground surfaces by using brooms, shovels, vacuums or cleaning machines, rather than wet clean-up methods.  Regularly collect and dispose of garbage and waste material. S-5 Good Housekeeping GH-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3  Routinely inspect equipment to ensure that it is functioning properly without leaking and conduct preventative maintenance and needed repairs.  Train employees on proper clean up and spill response procedures.  Designate separate areas of the site for auto parking, vehicle refueling and routine maintenance.  Promptly clean up leaks, drips and other spills.  Cover and maintain dumpsters and waste receptacles. Add additional dumpsters or increase frequency of waste collection if overflowing conditions reoccur.  Where outdoor painting and sanding occur, implement these practices: o Conduct these activities in designated areas that provide adequate protection to prevent overspray and uncontrolled emissions. All operations should be conducted on paved surfaces to facilitate cleanup. o Use portable containment as necessary for outside operations. o Clean up and properly dispose of excess paint, paint chips, protective coatings, grit waste, etc.  Maintain vegetation on facility grounds in a manner that minimizes erosion. Follow the Landscape Maintenance and Pesticide, Herbicide and Fertilizer Usage BMPs to ensure that minimum amounts of chemicals needed for healthy vegetation are applied in a manner that minimizes transport of these materials in runoff. Material Storage Practices Proper storage techniques include the following:  Provide adequate aisle space to facilitate material transfer and ease of access for inspection.  Store containers, drums, and bags away from direct traffic routes to reduce container damage resulting in accidental spills.  Stack containers according to manufacturer’s instructions to avoid damaging the containers from improper weight distribution. Also store materials in accordance with directions in Material Safety Data Sheets (MSDSs).  Store containers on pallets or similar devices to prevent corrosion of containers that results from containers coming in contact with moisture on the ground.  Store toxic or hazardous liquids within curbed areas or secondary containers. Material Inventory Practices An up-to-date materials inventory can keep material costs down by preventing overstocking, track how materials are stored and handled onsite, and identify which materials and activities pose the most risk to the environment. Assign responsibility of hazardous material inventory to individuals trained to handle such materials. A material inventory should include these steps:  Identify all chemical substances present at work site. Perform a walk-through of the site, review Good Housekeeping S-5 November 2010 Urban Drainage and Flood Control District GH-3 Urban Storm Drainage Criteria Manual Volume 3 purchase orders, list all chemical substances used and obtain Material Safety Data Sheets (MSDS) for all chemicals.  Label all containers. Labels should provide name and type of substance, stock number, expiration date, health hazards, handling suggestions, and first aid information. Much of, this information can be found on an MSDS.  Clearly identify special handling, storage, use and disposal considerations for hazardous materials on the material inventory.  Institute a shelf-life program to improve material tracking and inventory that can reduce the amount of materials that are overstocked and ensure proper disposal of expired materials. Careful tracking of materials ordered can result in more efficient materials use. Decisions on the amounts of hazardous materials that are stored on site should include an evaluation of any emergency control systems that are in place. All storage areas for hazardous materials should be designed to contain spills. Training and Participation Frequent and proper training in good housekeeping techniques reduces the likelihood that chemicals or equipment will be mishandled. To promote good housekeeping, consider implementing these practices:  Discuss good housekeeping practices in training programs and meetings.  Publicize pollution prevention concepts through posters or signs.  Post bulletin boards with updated good housekeeping procedures, tips and reminders. Rock Sock (RS) SC-5 November 2010 Urban Drainage and Flood Control District RS-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph RS-1. Rock socks placed at regular intervals in a curb line can help reduce sediment loading to storm sewer inlets. Rock socks can also be used as perimeter controls. Description A rock sock is constructed of gravel that has been wrapped by wire mesh or a geotextile to form an elongated cylindrical filter. Rock socks are typically used either as a perimeter control or as part of inlet protection. When placed at angles in the curb line, rock socks are typically referred to as curb socks. Rock socks are intended to trap sediment from stormwater runoff that flows onto roadways as a result of construction activities. Appropriate Uses Rock socks can be used at the perimeter of a disturbed area to control localized sediment loading. A benefit of rock socks as opposed to other perimeter controls is that they do not have to be trenched or staked into the ground; therefore, they are often used on roadway construction projects where paved surfaces are present. Use rock socks in inlet protection applications when the construction of a roadway is substantially complete and the roadway has been directly connected to a receiving storm system. Design and Installation When rock socks are used as perimeter controls, the maximum recommended tributary drainage area per 100 lineal feet of rock socks is approximately 0.25 acres with disturbed slope length of up to 150 feet and a tributary slope gradient no steeper than 3:1. A rock sock design detail and notes are provided in Detail RS-1. Also see the Inlet Protection Fact Sheet for design and installation guidance when rock socks are used for inlet protection and in the curb line. When placed in the gutter adjacent to a curb, rock socks should protrude no more than two feet from the curb in order for traffic to pass safely. If located in a high traffic area, place construction markers to alert drivers and street maintenance workers of their presence. Maintenance and Removal Rock socks are susceptible to displacement and breaking due to vehicle traffic. Inspect rock socks for damage and repair or replace as necessary. Remove sediment by sweeping or vacuuming as needed to maintain the functionality of the BMP, typically when sediment has accumulated behind the rock sock to one-half of the sock's height. Once upstream stabilization is complete, rock socks and accumulated sediment should be removed and properly disposed. Rock Sock Functions Erosion Control No Sediment Control Yes Site/Material Management No SC-5 Rock Sock (RS) RS-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Rock Sock (RS) SC-5 November 2010 Urban Drainage and Flood Control District RS-3 Urban Storm Drainage Criteria Manual Volume 3 Silt Fence (SF) SC-1 November 2010 Urban Drainage and Flood Control District SF-3 Urban Storm Drainage Criteria Manual Volume 3 SC-1 Silt Fence (SF) SF-4 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Spill Prevention, Containment and Control S-2 November 2010 Urban Drainage and Flood Control District SPCC-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph SPCC-1. Use of secondary containment around supplies stored outside helps to reduce the likelihood of spill and leaks reaching the storm sewer system in runoff. Photo courtesy of Tom Gore. Also See These BMP Fact Sheets  Covering Storage/Handling Areas  Good Housekeeping  Vehicle Fueling, Maintenance, Washing & Storage  Preventative Maintenance Description Spills and leaks of solid and liquid materials processed, handled or stored outdoors can be a significant source of stormwater pollutants. Spilled substances can reach receiving waters when runoff washes these materials from impervious surfaces or when spills directly enter the storm sewer system during dry weather conditions. Effective spill control includes both spill prevention and spill response measures and depends on proper employee training for spill response measures and may also include structural spill containment, particularly at industrial locations. Structural spill containment measures typically include temporary or permanent curbs or berms that surround a potential spill site. Berms may be constructed of concrete, earthen material, metal, synthetic liners, or other material that will safely contain the spill. Spill control devices may also include valves, slide gates, or other devices that can control and contain spilled material before it reaches the storm sewer system or receiving waters. Appropriate Uses Implement spill prevention, containment and control measures at municipal, commercial and industrial facilities in areas where materials may be spilled in quantities that may adversely impact receiving waters when discharged directly or through the storm sewer system. Check local, state, and/or federal regulations to determine when spill containment and control measures are required by law. Spill Prevention, Control and Countermeasures Plans may be required for certain facilities handling oil and hazardous substances sunder Section 311(j)(1)(C) of the federal Clean Water Act. Practice Guidelines Spill Prevention Measures  Train employees on potential sources of pollution on-site and provide clear, common-sense spill prevention practices. Require that these practices be strictly followed.  Identify equipment that may be exposed to stormwater, pollutants that may be generated and possible sources of leaks or discharges.  Perform regular inspection and preventative maintenance of equipment to ensure proper operation and to check for leaks or evidence of discharge (stains). Provide clear procedures to ensure that needed repairs are completed and provide temporary leak containment until such repairs can be implemented. S-2 Spill Prevention, Containment and Control SPCC-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3  Drain or replace motor oil and other automotive fluids in a designated area away from storm sewer inlets. Collect spent fluids and recycle or dispose of properly. Never dispose of these fluids in the storm sewer or sanitary sewer.  In fueling areas, clean up spills with dry methods (absorbents) and use damp cloths on gas pumps and damp mops on paved surfaces. Never use a hose to “wash down” a fuel spill.  Where practical, reduce stormwater contact with equipment and materials by implementing indoor or covered storage, implementing stormwater run-on control measures and following good housekeeping practices. Identification of Spill Areas Identify potential spill areas, potential spill volumes, material types, frequency of material use, and drainage paths from spill areas with relation to storm sewer inlets, adjacent waterbodies, structural BMPs, and containment structures. Use this information to determine the types of spill prevention and control measures needed specific to the site conditions. Examples of potential spill locations include:  Loading and unloading areas  Outdoor storage areas  Outdoor manufacturing or processing activities  Waste disposal/storage areas  Areas that generate significant dust or particulates (that may be subsequently deposited on the ground)  Salt piles  Areas prone to spills based on past experience at the site  Locations where other routine maintenance activities occur such as equipment maintenance and cleaning, pesticide/fertilizer application, etc. Additionally, areas where smaller leaks may occur such as parking should also have basic spill cleanup procedures. Material Handling Procedures From a water quality perspective, the primary principle behind effective material handling practices is to minimize exposure to stormwater. This can be accomplished by storing the material indoors under weather-resistant covering, elevating the material off the ground by using pallets, and diverting stormwater around materials storage areas. Representative outdoor materials handling procedures include:  Keep bulk solid materials such as raw materials, sand, gravel, topsoil, compost, concrete, packing materials, metal products and other materials covered and protected from stormwater.  When practical, store materials on impermeable surfaces.  Store hazardous materials according to federal, state, and local hazardous materials requirements. Spill Prevention, Containment and Control S-2 November 2010 Urban Drainage and Flood Control District SPCC-3 Urban Storm Drainage Criteria Manual Volume 3  Adopt procedures that reduce the chance of spills or leaks during filling or transfer of materials.  Substitute less toxic or non-toxic materials for toxic materials.  Store containers that are easily punctured or damaged away from high traffic areas (i.e., adopt a materials flow/plant layout plan).  Add waste-capture containers such as collection pans for lubricating fluids.  Store drums and containers with liquid materials on impermeable surfaces and provide secondary containment where appropriate. Drums stored outdoors should be located on pallets to minimize contact with runoff. Spill Response Procedures and Equipment Spill response procedures should be tailored to site-specific conditions and industry-specific regulatory requirements. General spill response procedures include:  Containment and cleanup of spills should begin promptly after the spill is observed.  Sweep up small quantities of dry chemical or solids to reduce exposure to runoff. Shoveling may be used for larger quantities of materials.  Absorbents should be readily accessible in fueling areas or other areas susceptible to spills.  Wipe up small spills with a shop rag, store shop rags in appropriate containers, dispose of rags properly or use a professional industrial cleaning service.  Contain medium-sized spills with absorbents (e.g., kitty litter, sawdust) and use inflatable berms or absorbent “snakes” as temporary booms for the spill. Store and dispose of absorbents properly. Wet/dry vacuums may also be used, but not for volatile fluids.  Develop procedures and locations for containing and storing leaking containers.  Install drip pans below minor equipment leaks and properly dispose of collected material until a repair can be made.  For large spills, first contain the spill and plug storm drain inlets where the liquid may migrate off- site, then clean up the spill.  Excavation of spill areas to removed contaminated material may be required where large liquid spills occur on unpaved surfaces.  An inventory of cleanup materials should be maintained onsite and strategically located based on the types and quantities of chemicals present. Structural Spill Containment Measures Two general approaches are often used when implementing spill containment measures. The first approach is designed to contain the entire spill. The second approach uses curbing to route spilled material to a collection basin. Both containment berming and curbing should be sized to safely contain or convey to a collection basin a spill from the largest storage tank, rail car, tank truck, or other containment device in the possible spill area. The spill containment area must have an impermeable surface (e.g., S-2 Spill Prevention, Containment and Control SPCC-4 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Key Spill Notification Contacts in Colorado  Colorado Department of Public Health and Environment Toll- Free 24-hour Environmental Emergency Spill Reporting Line: 1-877-518-5608  National Response Center: 1- 800-424-8802 (24-hour)  Local Emergency Planning Committee (OEM): 303-273- 162  Division of Oil & Public Safety- Storage Tanks: 303-318-8547  Oil and Gas Conservation Commission: 303-894-2100 or 1-888-235-1101 (toll-free spill/complaint line) impermeable liner, asphalt or concrete) to prevent groundwater contamination. The containment system must be designed to enable collection and removal of spilled material through a pump or vacuum trucks, use of sorbent or gelling material, or other measures. Material removed from the spill area must be disposed of or recycled according to local, state, and federal standards. If the capacity of the containment berming or the collection basin is exceeded, supplemental spill control measures should be available such as a portable containment device, sorbent materials, or gelling agents that eventually solidify the material. Water that collects within containment areas due to rainfall or snowmelt must be appropriately treated before release from the spill area. Spill Plan Development Many industries are required by federal law to have a Spill Prevention, Control and Countermeasures Plan (SPCC) that meets specific regulatory criteria when certain types and quantities of materials are used or processed at a site. These plans can be instrumental in developing a spill control plan for stormwater management purposes. Even if an SPCC plan is not legally required at a site, a spill control plan for stormwater management purposes may be necessary. Representative information appropriate for a spill control plan, building on concepts previously introduced in this Fact Sheet, includes:  Site plan showing where materials are stored and handled, and where associated activities occur.  Notification procedures to be used in the event of an accident  Instructions for clean-up procedures.  A designated person with spill response and clean-up authority.  Training of key personnel in plan and clean-up procedures.  Signs posted at critical locations providing a summary of SPCC plan information, phone numbers, contacts, equipment locations, etc.  Provisions requiring spills to be cleaned up, corrective actions taken, or countermeasures implemented immediately.  Provisions for absorbents to be made available for use in fuel areas, and for containers to be available for used absorbents.  Prohibition on washing absorbents into the storm drainage system or into the sanitary sewer system via floor drains.  Provision for emergency spill containment and clean-up kits in accessible and convenient locations. Kits should contain the appropriate clean-up materials applicable to the materials stored at the site. Stabilized Staging Area (SSA) SM-6 November 2010 Urban Drainage and Flood Control District SSA-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph SSA-1. Example of a staging area with a gravel surface to prevent mud tracking and reduce runoff. Photo courtesy of Douglas County. Description A stabilized staging area is a clearly designated area where construction equipment and vehicles, stockpiles, waste bins, and other construction-related materials are stored. The contractor office trailer may also be located in this area. Depending on the size of the construction site, more than one staging area may be necessary. Appropriate Uses Most construction sites will require a staging area, which should be clearly designated in SWMP drawings. The layout of the staging area may vary depending on the type of construction activity. Staging areas located in roadways due to space constraints require special measures to avoid materials being washed into storm inlets. Design and Installation Stabilized staging areas should be completed prior to other construction activities beginning on the site. Major components of a stabilized staging area include:  Appropriate space to contain storage and provide for loading/unloading operations, as well as parking if necessary.  A stabilized surface, either paved or covered, with 3-inch diameter aggregate or larger.  Perimeter controls such as silt fence, sediment control logs, or other measures.  Construction fencing to prevent unauthorized access to construction materials.  Provisions for Good Housekeeping practices related to materials storage and disposal, as described in the Good Housekeeping BMP Fact Sheet.  A stabilized construction entrance/exit, as described in the Vehicle Tracking Control BMP Fact Sheet, to accommodate traffic associated with material delivery and waste disposal vehicles. Over-sizing the stabilized staging area may result in disturbance of existing vegetation in excess of that required for the project. This increases costs, as well as requirements for long-term stabilization following the construction period. When designing the stabilized staging area, minimize the area of disturbance to the extent practical. Stabilized Staging Area Functions Erosion Control Yes Sediment Control Moderate Site/Material Yes SM-6 Stabilized Staging Area (SSA) SSA-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 See Detail SSA-1 for a typical stabilized staging area and SSA-2 for a stabilized staging area when materials staging in roadways is required. Maintenance and Removal Maintenance of stabilized staging areas includes maintaining a stable surface cover of gravel, repairing perimeter controls, and following good housekeeping practices. When construction is complete, debris, unused stockpiles and materials should be recycled or properly disposed. In some cases, this will require disposal of contaminated soil from equipment leaks in an appropriate landfill. Staging areas should then be permanently stabilized with vegetation or other surface cover planned for the development. Minimizing Long-Term Stabilization Requirements  Utilize off-site parking and restrict vehicle access to the site.  Use construction mats in lieu of rock when staging is provided in an area that will not be disturbed otherwise.  Consider use of a bermed contained area for materials and equipment that do not require a stabilized surface.  Consider phasing of staging areas to avoid disturbance in an area that will not be otherwise disturbed. Stabilized Staging Area (SSA) SM-6 November 2010 Urban Drainage and Flood Control District SSA-3 Urban Storm Drainage Criteria Manual Volume 3 SM-6 Stabilized Staging Area (SSA) SSA-4 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Stockpile Management (SP) MM-2 November 2010 Urban Drainage and Flood Control District SP-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph SP-1. A topsoil stockpile that has been partially revegetated and is protected by silt fence perimeter control. Description Stockpile management includes measures to minimize erosion and sediment transport from soil stockpiles. Appropriate Uses Stockpile management should be used when soils or other erodible materials are stored at the construction site. Special attention should be given to stockpiles in close proximity to natural or manmade storm systems. Design and Installation Locate stockpiles away from all drainage system components including storm sewer inlets. Where practical, choose stockpile locations that that will remain undisturbed for the longest period of time as the phases of construction progress. Place sediment control BMPs around the perimeter of the stockpile, such as sediment control logs, rock socks, silt fence, straw bales and sand bags. See Detail SP-1 for guidance on proper establishment of perimeter controls around a stockpile. For stockpiles in active use, provide a stabilized designated access point on the upgradient side of the stockpile. Stabilize the stockpile surface with surface roughening, temporary seeding and mulching, erosion control blankets, or soil binders. Soils stockpiled for an extended period (typically for more than 60 days) should be seeded and mulched with a temporary grass cover once the stockpile is placed (typically within 14 days). Use of mulch only or a soil binder is acceptable if the stockpile will be in place for a more limited time period (typically 30-60 days). Timeframes for stabilization of stockpiles noted in this fact sheet are "typical" guidelines. Check permit requirements for specific federal, state, and/or local requirements that may be more prescriptive. Stockpiles should not be placed in streets or paved areas unless no other practical alternative exists. See the Stabilized Staging Area Fact Sheet for guidance when staging in roadways is unavoidable due to space or right-of-way constraints. For paved areas, rock socks must be used for perimeter control and all inlets with the potential to receive sediment from the stockpile (even from vehicle tracking) must be protected. Maintenance and Removal Inspect perimeter controls and inlet protection in accordance with their respective BMP Fact Sheets. Where seeding, mulch and/or soil binders are used, reseeding or reapplication of soil binder may be necessary. When temporary removal of a perimeter BMP is necessary to access a stockpile, ensure BMPs are reinstalled in accordance with their respective design detail section. Stockpile Management Functions Erosion Control Yes Sediment Control Yes Site/Material Management Yes MM-2 Stockpile Management (SM) SP-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 When the stockpile is no longer needed, properly dispose of excess materials and revegetate or otherwise stabilize the ground surface where the stockpile was located. Stockpile Management (SP) MM-2 November 2010 Urban Drainage and Flood Control District SP-3 Urban Storm Drainage Criteria Manual Volume 3 MM-2 Stockpile Management (SM) SP-4 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Stockpile Management (SP) MM-2 November 2010 Urban Drainage and Flood Control District SP-5 Urban Storm Drainage Criteria Manual Volume 3 MM-2 Stockpile Management (SM) SP-6 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Street Sweeping and Cleaning S-11 November 2010 Urban Drainage and Flood Control District SWC-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph SSC-1. Monthly street sweeping from April through November removed nearly 40,690 cubic yards of sediment/debris from Denver streets in 2009. Photo courtesy of Denver Public Works. Description Street sweeping uses mechanical pavement cleaning practices to reduce sediment, litter and other debris washed into storm sewers by runoff. This can reduce pollutant loading to receiving waters and in some cases reduce clogging of storm sewers and prolong the life of infiltration oriented BMPs and reduce clogging of outlet structures in detention BMPs. Different designs are available with typical sweepers categorized as a broom and conveyor belt sweeper, wet or dry vacuum-assisted sweepers, and regenerative-air sweepers. The effectiveness of street sweeping is dependent upon particle loadings in the area being swept, street texture, moisture conditions, parked car management, equipment operating conditions and frequency of cleaning (Pitt et al. 2004). Appropriate Uses Street sweeping is an appropriate technique in urban areas where sediment and litter accumulation on streets is of concern for aesthetic, sanitary, water quality, and air quality reasons. From a pollutant loading perspective, street cleaning equipment can be most effective in areas where the surface to be cleaned is the major source of contaminants. These areas include freeways, large commercial parking lots, and paved storage areas (Pitt et al. 2004). Where significant sediment accumulation occurs on pervious surfaces tributary to infiltration BMPs, street sweeping may help to reduce clogging of infiltration media. In areas where construction activity is occurring, street sweeping should occur as part of construction site stormwater management plans. Vacuuming of permeable pavement systems is also considered a basic routine maintenance practice to maintain the BMP in effective operating condition. See the maintenance chapter for more information on permeable pavement systems. Not all sweepers are appropriate for this application. Practice Guidelines1 1. Post street sweeping schedules with signs and on local government websites so that cars are not parked on the street during designated sweeping days. 2. Sweeping frequency is dependent on local government budget, staffing, and equipment availability, but monthly sweeping during non-winter months is a common approach in the metro Denver urban 1 Practice guidelines adapted from CASQA (2003) California Stormwater BMP Handbook, Practice SC-70 Road and Street Maintenance. S-11 Street Sweeping and Cleaning SWC-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Changes in Street Sweeper Technology (Source: Center for Watershed Protection 2002) At one time, street sweepers were thought to have great potential to remove stormwater pollutants from urban street surfaces and were widely touted as a stormwater treatment practice in many communities. Street sweeping gradually fell out of favor, largely as a result of performance monitoring conducted as part of the National Urban Runoff Program (NURP). These studies generally concluded that street sweepers were not very effective in reducing pollutant loads (USEPA, 1983). The primary reason for the mediocre performance was that mechanical sweepers of that era were unable to pick up fine-grained sediment particles that carry a substantial portion of the stormwater pollutant load. In addition, the performance of sweepers is constrained by that portion of a street’s stormwater pollutant load delivered from outside street pavements (e.g., pollutants that wash onto the street from adjacent areas or are directly deposited on the street by rainfall). Street sweeping technology, however, has evolved considerably since the days of the NURP testing. Today, communities have a choice in three basic sweeping technologies to clean their urban streets: traditional mechanical sweepers that utilize a broom and conveyor belt, vacuum-assisted sweepers, and regenerative-air sweepers (those that blast air onto the pavement to loosen sediment particles and vacuum them into a hopper). For more information, see http://www.cwp.org/Resource_Library/Center_Docs/PWP/ELC_PWP121.pdf area. Consider increasing sweeping frequency based on factors such as traffic volume, land use, field observations of sediment and trash accumulation, proximity to watercourses, etc. For example:  Increase the sweeping frequency for streets with high pollutant loadings, especially in high traffic and industrial areas.  Conduct street sweeping prior to wetter seasons to remove accumulated sediments.  Increase the sweeping frequency for streets in special problem areas such as special events, high litter or erosion zones. 3. Perform street cleaning during dry weather if possible. 4. Avoid wet cleaning the street; instead, utilize dry methods where possible. 5. Maintain cleaning equipment in good working condition and purchase replacement equipment as needed. Old sweepers should be replaced with more technologically advanced sweepers (preferably regenerative air sweepers) that maximize pollutant removal. 6. Operate sweepers at manufacturer recommended optimal speed levels to increase effectiveness. 7. Regularly inspect vehicles and equipment for leaks and repair promptly. 8. Keep accurate logs of the number of curb-miles swept and the amount of waste collected. 9. Dispose of street sweeping debris and dirt at a landfill. 10. Do not store swept material along the side of the street or near a storm drain inlet. Street Sweeping and Vacuuming (SS) SM-7 November 2010 Urban Drainage and Flood Control District SS-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph SS-1. A street sweeper removes sediment and potential pollutants along the curb line at a construction site. Photo courtesy of Tom Gore. Description Street sweeping and vacuuming remove sediment that has been tracked onto roadways to reduce sediment transport into storm drain systems or a surface waterway. Appropriate Uses Use this practice at construction sites where vehicles may track sediment offsite onto paved roadways. Design and Installation Street sweeping or vacuuming should be conducted when there is noticeable sediment accumulation on roadways adjacent to the construction site. Typically, this will be concentrated at the entrance/exit to the construction site. Well-maintained stabilized construction entrances, vehicle tracking controls and tire wash facilities can help reduce the necessary frequency of street sweeping and vacuuming. On smaller construction sites, street sweeping can be conducted manually using a shovel and broom. Never wash accumulated sediment on roadways into storm drains. Maintenance and Removal  Inspect paved roads around the perimeter of the construction site on a daily basis and more frequently, as needed. Remove accumulated sediment, as needed.  Following street sweeping, check inlet protection that may have been displaced during street sweeping.  Inspect area to be swept for materials that may be hazardous prior to beginning sweeping operations. Street Sweeping/ Vacuuming Functions Erosion Control No Sediment Control Yes Site/Material Management Yes Temporary and Permanent Seeding (TS/PS) EC-2 June 2012 Urban Drainage and Flood Control District TS/PS-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph TS/PS -1. Equipment used to drill seed. Photo courtesy of Douglas County. Description Temporary seeding can be used to stabilize disturbed areas that will be inactive for an extended period. Permanent seeding should be used to stabilize areas at final grade that will not be otherwise stabilized. Effective seeding includes preparation of a seedbed, selection of an appropriate seed mixture, proper planting techniques, and protection of the seeded area with mulch, geotextiles, or other appropriate measures. Appropriate Uses When the soil surface is disturbed and will remain inactive for an extended period (typically 30 days or longer), proactive stabilization measures should be implemented. If the inactive period is short-lived (on the order of two weeks), techniques such as surface roughening may be appropriate. For longer periods of inactivity, temporary seeding and mulching can provide effective erosion control. Permanent seeding should be used on finished areas that have not been otherwise stabilized. Typically, local governments have their own seed mixes and timelines for seeding. Check jurisdictional requirements for seeding and temporary stabilization. Design and Installation Effective seeding requires proper seedbed preparation, selection of an appropriate seed mixture, use of appropriate seeding equipment to ensure proper coverage and density, and protection with mulch or fabric until plants are established. The USDCM Volume 2 Revegetation Chapter contains detailed seed mix, soil preparations, and seeding and mulching recommendations that may be referenced to supplement this Fact Sheet. Drill seeding is the preferred seeding method. Hydroseeding is not recommended except in areas where steep slopes prevent use of drill seeding equipment, and even in these instances it is preferable to hand seed and mulch. Some jurisdictions do not allow hydroseeding or hydromulching. Seedbed Preparation Prior to seeding, ensure that areas to be revegetated have soil conditions capable of supporting vegetation. Overlot grading can result in loss of topsoil, resulting in poor quality subsoils at the ground surface that have low nutrient value, little organic matter content, few soil microorganisms, rooting restrictions, and conditions less conducive to infiltration of precipitation. As a result, it is typically necessary to provide stockpiled topsoil, compost, or other Temporary and Permanent Seeding Functions Erosion Control Yes Sediment Control No Site/Material Management No EC-2 Temporary and Permanent Seeding (TS/PS) TS/PS-2 Urban Drainage and Flood Control District June 2012 Urban Storm Drainage Criteria Manual Volume 3 soil amendments and rototill them into the soil to a depth of 6 inches or more. Topsoil should be salvaged during grading operations for use and spread on areas to be revegetated later. Topsoil should be viewed as an important resource to be utilized for vegetation establishment, due to its water-holding capacity, structure, texture, organic matter content, biological activity, and nutrient content. The rooting depth of most native grasses in the semi-arid Denver metropolitan area is 6 to 18 inches. At a minimum, the upper 6 inches of topsoil should be stripped, stockpiled, and ultimately respread across areas that will be revegetated. Where topsoil is not available, subsoils should be amended to provide an appropriate plant-growth medium. Organic matter, such as well digested compost, can be added to improve soil characteristics conducive to plant growth. Other treatments can be used to adjust soil pH conditions when needed. Soil testing, which is typically inexpensive, should be completed to determine and optimize the types and amounts of amendments that are required. If the disturbed ground surface is compacted, rip or rototill the surface prior to placing topsoil. If adding compost to the existing soil surface, rototilling is necessary. Surface roughening will assist in placement of a stable topsoil layer on steeper slopes, and allow infiltration and root penetration to greater depth. Prior to seeding, the soil surface should be rough and the seedbed should be firm, but neither too loose nor compacted. The upper layer of soil should be in a condition suitable for seeding at the proper depth and conducive to plant growth. Seed-to-soil contact is the key to good germination. Seed Mix for Temporary Vegetation To provide temporary vegetative cover on disturbed areas which will not be paved, built upon, or fully landscaped or worked for an extended period (typically 30 days or more), plant an annual grass appropriate for the time of planting and mulch the planted areas. Annual grasses suitable for the Denver metropolitan area are listed in Table TS/PS-1. These are to be considered only as general recommendations when specific design guidance for a particular site is not available. Local governments typically specify seed mixes appropriate for their jurisdiction. Seed Mix for Permanent Revegetation To provide vegetative cover on disturbed areas that have reached final grade, a perennial grass mix should be established. Permanent seeding should be performed promptly (typically within 14 days) after reaching final grade. Each site will have different characteristics and a landscape professional or the local jurisdiction should be contacted to determine the most suitable seed mix for a specific site. In lieu of a specific recommendation, one of the perennial grass mixes appropriate for site conditions and growth season listed in Table TS/PS-2 can be used. The pure live seed (PLS) rates of application recommended in these tables are considered to be absolute minimum rates for seed applied using proper drill-seeding equipment. If desired for wildlife habitat or landscape diversity, shrubs such as rubber rabbitbrush (Chrysothamnus nauseosus), fourwing saltbush (Atriplex canescens) and skunkbrush sumac (Rhus trilobata) could be added to the upland seedmixes at 0.25, 0.5 and 1 pound PLS/acre, respectively. In riparian zones, planting root stock of such species as American plum (Prunus americana), woods rose (Rosa woodsii), plains cottonwood (Populus sargentii), and willow (Populus spp.) may be considered. On non-topsoiled upland sites, a legume such as Ladak alfalfa at 1 pound PLS/acre can be included as a source of nitrogen for perennial grasses. Temporary and Permanent Seeding (TS/PS) EC-2 June 2012 Urban Drainage and Flood Control District TS/PS-3 Urban Storm Drainage Criteria Manual Volume 3 Seeding dates for the highest success probability of perennial species along the Front Range are generally in the spring from April through early May and in the fall after the first of September until the ground freezes. If the area is irrigated, seeding may occur in summer months, as well. See Table TS/PS-3 for appropriate seeding dates. Table TS/PS-1. Minimum Drill Seeding Rates for Various Temporary Annual Grasses Speciesa (Common name) Growth Seasonb Pounds of Pure Live Seed (PLS)/acrec Planting Depth (inches) 1. Oats Cool 35 - 50 1 - 2 2. Spring wheat Cool 25 - 35 1 - 2 3. Spring barley Cool 25 - 35 1 - 2 4. Annual ryegrass Cool 10 - 15 ½ 5. Millet Warm 3 - 15 ½ - ¾ 6. Sudangrass Warm 5–10 ½ - ¾ 7. Sorghum Warm 5–10 ½ - ¾ 8. Winter wheat Cool 20–35 1 - 2 9. Winter barley Cool 20–35 1 - 2 10. Winter rye Cool 20–35 1 - 2 11. Triticale Cool 25–40 1 - 2 a Successful seeding of annual grass resulting in adequate plant growth will usually produce enough dead-plant residue to provide protection from wind and water erosion for an additional year. This assumes that the cover is not disturbed or mowed closer than 8 inches. Hydraulic seeding may be substituted for drilling only where slopes are steeper than 3:1 or where access limitations exist. When hydraulic seeding is used, hydraulic mulching should be applied as a separate operation, when practical, to prevent the seeds from being encapsulated in the mulch. b See Table TS/PS-3 for seeding dates. Irrigation, if consistently applied, may extend the use of cool season species during the summer months. c Seeding rates should be doubled if seed is broadcast, or increased by 50 percent if done using a Brillion Drill or by hydraulic seeding. EC-2 Temporary and Permanent Seeding (TS/PS) TS/PS-4 Urban Drainage and Flood Control District June 2012 Urban Storm Drainage Criteria Manual Volume 3 Table TS/PS-2. Minimum Drill Seeding Rates for Perennial Grasses Common a Name Botanical Name Growth Seasonb Growth Form Seeds/ Pound Pounds of PLS/acre Alakali Soil Seed Mix Alkali sacaton Sporobolus airoides Cool Bunch 1,750,000 0.25 Basin wildrye Elymus cinereus Cool Bunch 165,000 2.5 Sodar streambank wheatgrass Agropyron riparium 'Sodar' Cool Sod 170,000 2.5 Jose tall wheatgrass Agropyron elongatum 'Jose' Cool Bunch 79,000 7.0 Arriba western wheatgrass Agropyron smithii 'Arriba' Cool Sod 110,000 5.5 Total 17.75 Fertile Loamy Soil Seed Mix Ephriam crested wheatgrass Agropyron cristatum 'Ephriam' Cool Sod 175,000 2.0 Dural hard fescue Festuca ovina 'duriuscula' Cool Bunch 565,000 1.0 Lincoln smooth brome Bromus inermis leyss 'Lincoln' Cool Sod 130,000 3.0 Sodar streambank wheatgrass Agropyron riparium 'Sodar' Cool Sod 170,000 2.5 Arriba western wheatgrass Agropyron smithii 'Arriba' Cool Sod 110,000 7.0 Total 15.5 High Water Table Soil Seed Mix Meadow foxtail Alopecurus pratensis Cool Sod 900,000 0.5 Redtop Agrostis alba Warm Open sod 5,000,000 0.25 Reed canarygrass Phalaris arundinacea Cool Sod 68,000 0.5 Lincoln smooth brome Bromus inermis leyss 'Lincoln' Cool Sod 130,000 3.0 Pathfinder switchgrass Panicum virgatum 'Pathfinder' Warm Sod 389,000 1.0 Alkar tall wheatgrass Agropyron elongatum 'Alkar' Cool Bunch 79,000 5.5 Total 10.75 Transition Turf Seed Mixc Ruebens Canadian bluegrass Poa compressa 'Ruebens' Cool Sod 2,500,000 0.5 Dural hard fescue Festuca ovina 'duriuscula' Cool Bunch 565,000 1.0 Citation perennial ryegrass Lolium perenne 'Citation' Cool Sod 247,000 3.0 Lincoln smooth brome Bromus inermis leyss 'Lincoln' Cool Sod 130,000 3.0 Total 7.5 Temporary and Permanent Seeding (TS/PS) EC-2 June 2012 Urban Drainage and Flood Control District TS/PS-5 Urban Storm Drainage Criteria Manual Volume 3 Table TS/PS-2. Minimum Drill Seeding Rates for Perennial Grasses (cont.) Common Name Botanical Name Growth Seasonb Growth Form Seeds/ Pound Pounds of PLS/acre Sandy Soil Seed Mix Blue grama Bouteloua gracilis Warm Sod-forming bunchgrass 825,000 0.5 Camper little bluestem Schizachyrium scoparium 'Camper' Warm Bunch 240,000 1.0 Prairie sandreed Calamovilfa longifolia Warm Open sod 274,000 1.0 Sand dropseed Sporobolus cryptandrus Cool Bunch 5,298,000 0.25 Vaughn sideoats grama Bouteloua curtipendula 'Vaughn' Warm Sod 191,000 2.0 Arriba western wheatgrass Agropyron smithii 'Arriba' Cool Sod 110,000 5.5 Total 10.25 Heavy Clay, Rocky Foothill Seed Mix Ephriam crested wheatgrass d Agropyron cristatum 'Ephriam' Cool Sod 175,000 1.5 Oahe Intermediate wheatgrass Agropyron intermedium 'Oahe' Cool Sod 115,000 5.5 Vaughn sideoats grama e Bouteloua curtipendula 'Vaughn' Warm Sod 191,000 2.0 Lincoln smooth brome Bromus inermis leyss 'Lincoln' Cool Sod 130,000 3.0 Arriba western wheatgrass Agropyron smithii 'Arriba' Cool Sod 110,000 5.5 Total 17.5 a All of the above seeding mixes and rates are based on drill seeding followed by crimped straw mulch. These rates should be doubled if seed is broadcast and should be increased by 50 percent if the seeding is done using a Brillion Drill or is applied through hydraulic seeding. Hydraulic seeding may be substituted for drilling only where slopes are steeper than 3:1. If hydraulic seeding is used, hydraulic mulching should be done as a separate operation. b See Table TS/PS-3 for seeding dates. c If site is to be irrigated, the transition turf seed rates should be doubled. d Crested wheatgrass should not be used on slopes steeper than 6H to 1V. e Can substitute 0.5 lbs PLS of blue grama for the 2.0 lbs PLS of Vaughn sideoats grama. EC-2 Temporary and Permanent Seeding (TS/PS) TS/PS-6 Urban Drainage and Flood Control District June 2012 Urban Storm Drainage Criteria Manual Volume 3 Table TS/PS-3. Seeding Dates for Annual and Perennial Grasses Annual Grasses (Numbers in table reference species in Table TS/PS-1) Perennial Grasses Seeding Dates Warm Cool Warm Cool January 1–March 15   March 16–April 30 4 1,2,3   May 1–May 15 4  May 16–June 30 4,5,6,7 July 1–July 15 5,6,7 July 16–August 31 September 1–September 30 8,9,10,11 October 1–December 31   Mulch Cover seeded areas with mulch or an appropriate rolled erosion control product to promote establishment of vegetation. Anchor mulch by crimping, netting or use of a non-toxic tackifier. See the Mulching BMP Fact Sheet for additional guidance. Maintenance and Removal Monitor and observe seeded areas to identify areas of poor growth or areas that fail to germinate. Reseed and mulch these areas, as needed. An area that has been permanently seeded should have a good stand of vegetation within one growing season if irrigated and within three growing seasons without irrigation in Colorado. Reseed portions of the site that fail to germinate or remain bare after the first growing season. Seeded areas may require irrigation, particularly during extended dry periods. Targeted weed control may also be necessary. Protect seeded areas from construction equipment and vehicle access. Vehicle Maintenance, Fueling and Storage S-7 November 2010 Urban Drainage and Flood Control District VFM-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph VF-1. Use drip pans to collect leaks from vehicles until repairs can be completed. Photo courtesy of Tom Gore. Description Areas where vehicles are fueled, maintained, and stored/parked can be pollutant "hot spots" that can result in hydrocarbons, trace metals, and other pollutants being transported in stormwater runoff. Proper fueling operations, storage of automotive fluids and effective spill cleanup procedures can help reduce contamination of stormwater runoff from vehicle maintenance and fueling facilities. Fuel-related spills can occur due to inattention during fueling or "topping off" fuel tanks. Common activities at commercial, industrial and municipal maintenance shops include parts cleaning, vehicle fluid replacement, and equipment replacement and repair. Some of the wastes generated at automobile maintenance facilities include solvents (degreasers, paint thinners, etc.), antifreeze, brake fluid and brake pad dust, battery acid, motor oil, fuel, and lubricating grease. Fleet storage areas and customer and employee parking can also be a source of vehicle-related contamination from leaks, antifreeze spills, etc. Appropriate Uses These BMP guidelines are applicable to vehicle maintenance, fueling, fleet storage and parking facilities. Be aware that washing vehicles and equipment outdoors or in areas where wash water flows onto the ground can pollute stormwater. Vehicle wash water is considered process wastewater that should not be discharged to the storm sewer system. Consult state and federal discharge permit requirements for proper disposal of vehicle washwater, which is typically accomplished through discharge to the sanitary sewer system. Practice Guidelines1  Perform maintenance activities inside or under cover. When repairs cannot be performed indoors, be sure to use drip pans or absorbents. Vehicle Maintenance The most effective way to minimize wastes generated by automotive maintenance activities is to prevent their production in the first place. Consider adopting these practices:  Keep equipment clean and free of excessive oil and grease buildup. 1 Guidelines adapted from the USEPA Menu of BMPs. S-7 Vehicle Maintenance, Fueling and Storage VFM-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3  Promptly cleanup spills using dry methods and properly dispose of waste. When water is required, use as little as possible to clean spills, leaks, and drips.  Use a solvent collection service to collect spent solvent used for parts cleaning. Where practical, use detergent-based, steam cleaning, or pressure-based cleaning systems instead of organic solvent degreasers when practical. (Be aware that cleaning water discharged into the sanitary sewer may require pre-treatment prior to discharge.)  When using liquids for cleaning, use a centralized station to ensure that solvents and residues stay in one area. Locate drip pans and draining boards to direct solvents back into a solvent sink or holding tank for reuse.  Store used oil for recycling in labeled tanks. Locate used oil tanks and drums away from storm drains, flowing streams, and preferably indoors.  Use non-hazardous or less hazardous alternatives when practical. For example, replace chlorinated organic solvents with non-chlorinated ones like kerosene or mineral spirits.  Properly recycle or dispose of grease, oil, antifreeze, brake fluid, cleaning solutions, hydraulic fluid, batteries, transmission fluid, worn parts, filters, and rags.  Drain and crush oil filters before recycling or disposal.  Drain all fluids and remove batteries from salvage vehicles and equipment.  Closely monitor parked vehicles for leaks and place pans under any leaks to collect the fluids for proper disposal or recycling.  Install berms or other measures to contain spills and prevent work surface runoff from entering storm drains.  Develop and follow a spill prevention plan. This includes a variety of measures such as spill kits and knowing where storm drains are located and how to protect them (e.g., drain mat, berm) when larger spills occur. (See the Spill Prevention, Containment and Control BMP for more information.)  Conduct periodic employee training to reinforce proper disposal practices.  Promptly transfer used fluids to recycling drums or hazardous waste containers.  Store cracked batteries in leak-proof secondary containers.  Inspect outdoor storage areas regularly for drips, spills and improperly stored materials (unlabeled containers, auto parts that might contain grease or fluids, etc.). This is particularly important for parking areas for vehicles awaiting repair.  Structural stormwater BMPs in vehicle hotspot areas require routine cleanout of oil and grease, sometimes monthly or more frequently. During periods of heavy rainfall, cleanout is required more often to ensure that pollutants are not washed through the trap. Sediment removal is also required on a regular basis to keep the BMP working efficiently. Vehicle Maintenance, Fueling and Storage S-7 November 2010 Urban Drainage and Flood Control District VFM-3 Urban Storm Drainage Criteria Manual Volume 3 Vehicle Fueling  Designated fueling areas should be designed to prevent stormwater runoff and spills. For example, fuel-dispensing areas should be paved with concrete or an equivalent impervious surface, with an adequate slope to prevent ponding, and separated from the rest of the site by a grade break or berm that prevents run-on of stormwater.  Fuel dispensing areas should be covered. The cover's minimum dimensions must be equal to or greater than the area within the grade break or the fuel dispensing area so that the fueling area is completely covered. It may be necessary to install and maintain an oil capture device in catch basins that have the potential to receive runoff from the fueling area.  For facilities where equipment is being fueled with a mobile fuel truck, establish a designated fueling area. Place temporary "caps" over nearby catch basins or manhole covers so that if a spill occurs, it is prevented from entering the storm drain. A form of secondary containment should be used when transferring fuel from the tank truck to the fuel tank. Storm drains in the vicinity should also be covered. Install vapor recovery nozzles to help control drips, as well as reduce air pollution.  Keep spill response information and spill cleanup materials onsite and readily available.  Fuel-dispensing areas should be inspected regularly and repair promptly completed. Inspectors should: o Check for external corrosion and structural failure in aboveground tanks. o Check for spills and overfills due to operator error. o Check for failure of any piping systems. o Check for leaks or spills during pumping of liquids or gases from a truck or rail car to a storage facility or vice versa. o Visually inspect new tank or container installations for loose fittings, poor welds, and improper or poorly fitted gaskets. o Inspect tank foundations, connections, coatings, tank walls, and piping systems. Look for corrosion, leaks, cracks, scratches, and other physical damage that may weaken the tank or container system.  Aboveground and belowground tanks should be tested periodically for integrity by a qualified professional.  Dry cleanup methods should be employed when cleaning up fuel-dispensing areas. Such methods include sweeping to remove litter and debris and using rags and absorbents for leaks and spills. Water should not be used to wash these areas. During routine cleaning, use a damp cloth on the pumps and a damp mop on the pavement, rather than spraying with a hose. Fuel dispensing nozzles should be fitted with "hold-open latches" (automatic shutoff) except where prohibited by local fire departments. Signs can be posted at the fuel dispenser or island warning vehicle owners/operators against "topping off" vehicle fuel tanks.  Written procedures that describe these BMPs should be provided to employees who will be using fueling systems. Vehicle Tracking Control (VTC) SM-4 November 2010 Urban Drainage and Flood Control District VTC-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph VTC-1. A vehicle tracking control pad constructed with properly sized rock reduces off-site sediment tracking. Description Vehicle tracking controls provide stabilized construction site access where vehicles exit the site onto paved public roads. An effective vehicle tracking control helps remove sediment (mud or dirt) from vehicles, reducing tracking onto the paved surface. Appropriate Uses Implement a stabilized construction entrance or vehicle tracking control where frequent heavy vehicle traffic exits the construction site onto a paved roadway. An effective vehicle tracking control is particularly important during the following conditions:  Wet weather periods when mud is easily tracked off site.  During dry weather periods where dust is a concern.  When poorly drained, clayey soils are present on site. Although wheel washes are not required in designs of vehicle tracking controls, they may be needed at particularly muddy sites. Design and Installation Construct the vehicle tracking control on a level surface. Where feasible, grade the tracking control towards the construction site to reduce off-site runoff. Place signage, as needed, to direct construction vehicles to the designated exit through the vehicle tracking control. There are several different types of stabilized construction entrances including: VTC-1. Aggregate Vehicle Tracking Control. This is a coarse-aggregate surfaced pad underlain by a geotextile. This is the most common vehicle tracking control, and when properly maintained can be effective at removing sediment from vehicle tires. VTC-2. Vehicle Tracking Control with Construction Mat or Turf Reinforcement Mat. This type of control may be appropriate for site access at very small construction sites with low traffic volume over vegetated areas. Although this application does not typically remove sediment from vehicles, it helps protect existing vegetation and provides a stabilized entrance. Vehicle Tracking Control Functions Erosion Control Moderate Sediment Control Yes Site/Material Management Yes SM-4 Vehicle Tracking Control (VTC) VTC-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Photograph VTC-2. A vehicle tracking control pad with wheel wash facility. Photo courtesy of Tom Gore. VTC-3. Stabilized Construction Entrance/Exit with Wheel Wash. This is an aggregate pad, similar to VTC-1, but includes equipment for tire washing. The wheel wash equipment may be as simple as hand-held power washing equipment to more advance proprietary systems. When a wheel wash is provided, it is important to direct wash water to a sediment trap prior to discharge from the site. Vehicle tracking controls are sometimes installed in combination with a sediment trap to treat runoff. Maintenance and Removal Inspect the area for degradation and replace aggregate or material used for a stabilized entrance/exit as needed. If the area becomes clogged and ponds water, remove and dispose of excess sediment or replace material with a fresh layer of aggregate as necessary. With aggregate vehicle tracking controls, ensure rock and debris from this area do not enter the public right-of-way. Remove sediment that is tracked onto the public right of way daily or more frequently as needed. Excess sediment in the roadway indicates that the stabilized construction entrance needs maintenance. Ensure that drainage ditches at the entrance/exit area remain clear. A stabilized entrance should be removed only when there is no longer the potential for vehicle tracking to occur. This is typically after the site has been stabilized. When wheel wash equipment is used, be sure that the wash water is discharged to a sediment trap prior to discharge. Also inspect channels conveying the water from the wash area to the sediment trap and stabilize areas that may be eroding. When a construction entrance/exit is removed, excess sediment from the aggregate should be removed and disposed of appropriately. The entrance should be promptly stabilized with a permanent surface following removal, typically by paving. Vehicle Tracking Control (VTC) SM-4 November 2010 Urban Drainage and Flood Control District VTC-3 Urban Storm Drainage Criteria Manual Volume 3 SM-4 Vehicle Tracking Control (VTC) VTC-4 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Vehicle Tracking Control (VTC) SM-4 November 2010 Urban Drainage and Flood Control District VTC-5 Urban Storm Drainage Criteria Manual Volume 3 SM-4 Vehicle Tracking Control (VTC) VTC-6 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Wind Erosion/Dust Control (DC) EC-14 November 2010 Urban Drainage and Flood Control District DC-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph DC-1. Water truck used for dust suppression. Photo courtesy of Douglas County. Description Wind erosion and dust control BMPs help to keep soil particles from entering the air as a result of land disturbing construction activities. These BMPs include a variety of practices generally focused on either graded disturbed areas or construction roadways. For graded areas, practices such as seeding and mulching, use of soil binders, site watering, or other practices that provide prompt surface cover should be used. For construction roadways, road watering and stabilized surfaces should be considered. Appropriate Uses Dust control measures should be used on any site where dust poses a problem to air quality. Dust control is important to control for the health of construction workers and surrounding waterbodies. Design and Installation The following construction BMPs can be used for dust control:  An irrigation/sprinkler system can be used to wet the top layer of disturbed soil to help keep dry soil particles from becoming airborne.  Seeding and mulching can be used to stabilize disturbed surfaces and reduce dust emissions.  Protecting existing vegetation can help to slow wind velocities across the ground surface, thereby limiting the likelihood of soil particles to become airborne.  Spray-on soil binders form a bond between soil particles keeping them grounded. Chemical treatments may require additional permitting requirements. Potential impacts to surrounding waterways and habitat must be considered prior to use.  Placing rock on construction roadways and entrances will help keep dust to a minimum across the construction site.  Wind fences can be installed on site to reduce wind speeds. Install fences perpendicular to the prevailing wind direction for maximum effectiveness. Maintenance and Removal When using an irrigation/sprinkler control system to aid in dust control, be careful not to overwater. Overwatering will cause construction vehicles to track mud off-site. Wind Erosion Control/ Dust Control Functions Erosion Control Yes Sediment Control No Site/Material Management Moderate WOODSPRING SUITES │ SWMP REPORT MARCH 26, 2019 APPENDIX G – LAND DISTURBANCE / CONTROL MEASURE / STABILIZATION LOG Land Disturbance / BMP Installation / Stabilization Log Date Initiated Description of Activity Date Ceased Identification of BMP / Stabilization Method Date Implemented Date Removed WOODSPRING SUITES │ SWMP REPORT MARCH 26, 2019 APPENDIX H – CDPHE ENVIRONMENTAL SPILL REPORTING involving a radioactive or infectious material, or there is a release of a marine pollutant. Spills and incidents that have or may result in a spill along a highway must be reported to the nearest law enforcement agency immediately. The Colorado State Patrol and CDPHE must also be notified as soon as possible. In the event of a spill of hazardous waste at a transfer facility, the transporter must notify CDPHE within 24 hours if the spill exceeds 55 gallons or if there is a fire or explosion. The National Response Center should be notified as soon as possible after discovery of a release of a hazardous liquid or carbon dioxide from a pipeline system if a person is killed or injured, there is a fire or explosion, there is property damage of $50,000 or more, or any nearby water body is contaminated. The National Response Center and the Colorado Public Utilities Commission Gas Pipeline Safety Section must be notified as soon as possible, but not more than two hours after discovery of a release of gas from a natural gas pipeline or liquefied natural gas facility if a person is killed or injured, there is an emergency shutdown of the facility, or there is property damage of $50,000 or more. The Colorado Public Utilities Commission should also be notified if there is a gas leak from a pipeline, liquefied natural gas system, master meter system or a propane system that results in the evacuation of 50 or more people from an occupied building or the closure of a roadway. Oil and Gas Exploration All Class I major events on federal lands, including releases of hazardous substances in excess of the CERCLA reportable quantity and spills of more than 100 barrels of fluid and/or 500 MCF of gas released, must be reported to the Bureau of Land Management (BLM) immediately. Spills of oil, gas, salt water, toxic liquids and waste materials must also be reported to the BLM and the surface management agency. Spills of exploration and production (E&P) waste on state or private lands in excess of 20 barrels, and spills of any size that impact or threaten to impact waters of the state, an occupied structure, or public byway must be reported to the Colorado Oil and Gas Conservation Commission as soon as practicable, but not more than 24 hours after discovery. Spills of any size that impact or threaten to impact waters of the state must be reported to CDPHE immediately. Spills that impact or threaten to impact a surface water intake must be reported to the emergency contact for that facility immediately after discovery. Spills of more than five (5) barrels of E&P waste must be reported in writing to the Oil and Gas Conservation Commission within 10 days of discovery. REPORTING NUMBERS National Response Center (24-hour) 1-800-424-8802 CDPHE Colorado Environmental Release and Incident Reporting Line (24-hour) 1-877-518-5608 ENVIRONMENTAL SPILL REPORTING CERCLA, EPCRA and RCRA The Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) and the Emergency Planning and Community Right-to-Know Act (EPCRA) require that a release of a reportable quantity or more of a hazardous substance to the environment be reported immediately to the appropriate authorities when the release is discovered. Under CERCLA, reportable quantities were established for hazardous substances listed or designated under other environmental statutes. These include:  all hazardous air pollutants (HAPs) listed under Section 112(b) of the Clean Air Act.  all toxic pollutants designated under Section 307(a) or Section 311(b)(2)(A) of the Clean Water Act.  all Resource Conservation and Recovery Act (RCRA) characteristic and listed hazardous wastes.  any element, compound, or substance designated under Section 102 of CERCLA. EPCRA established a list of extremely hazardous substances (EHS) that could cause serious irreversible health effects from accidental releases. Many substances appear on both the CERCLA and EPCRA lists. EPCRA extremely hazardous substances that are also CERCLA hazardous substances have the same reportable quantity (RQ) as under CERCLA. EPCRA extremely hazardous substances that are not listed under CERCLA have a reportable quantity that is equal to their threshold planning quantity (TPQ). A list of CERCLA reportable quantities is included in 40 CFR Section 302.4. A list of EPCRA threshold planning quantities is included in 40 CFR Part 355 Appendices A & B. CERCLA-reportable releases must be reported immediately to the National Response Center (NRC), while EPCRA-reportable releases must be reported immediately to the National Response Center, the State Emergency Response Commission (SERC) and the affected Local Emergency Planning Committee (LEPC). If the release is an EPCRA extremely hazardous substance, but not a CERCLA hazardous substance, and there is absolutely no potential to affect off-site persons, then only the State Emergency Planning Commission (represented by CDPHE for reporting purposes) and the Local Emergency Planning Committee need to be notified. In the case of a release of hazardous waste stored in tanks, RCRA-permitted facilities and large quantity generators must also notify CDPHE within 24 hours of any release to the environment that is greater than one (1) pound. Radiation Control Each licensee or registrant must report to the Radiation Incident Reporting Line in the event of lost, stolen or missing licensed or registered radioactive WOODSPRING SUITES │ SWMP REPORT MARCH 26, 2019 APPENDIX I – SWMP INSPECTION REPORTS 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 WOODSPRING SUITES │ SWMP REPORT MARCH 26, 2019 APPENDIX J – CONTROL MEASURE CORRECTIVE ACTION LOG BMP Corrective Action Log Date Identified Inspector Description of BMP Deficiency Corrective Action Taken Date Completed WOODSPRING SUITES │ SWMP REPORT MARCH 26, 2019 APPENDIX K – SWMP AMENDMENT LOG SWMP Amendment Log Amendment Number Date Inspector Description of Amendment materials or radiation machines, releases of radioactive materials, contamination events, and fires or explosions involving radioactive materials. Releases of radionuclides are reportable under CERCLA. Clean Water Act The Clean Water Act requires the person in charge of a facility or vessel to immediately report to the National Response Center all discharges of oil or designated hazardous substances to water. Oil means oil of any kind or form. Designated hazardous substances are included in the CERCLA list. The Clean Water Act also requires that facilities with a National Pollutant Discharge Elimination System (NPDES) permit report to the National Response Center within 24 hours of becoming aware of any unanticipated bypasses or upsets that cause an exceedance of the effluent limits in their permit and any violations of their maximum daily discharge limits for pollutants listed in their permit. A release of any chemical, oil, petroleum product, sewage, etc., which may enter waters of the state of Colorado (which include surface water, ground water and dry gullies and storm sewers leading to surface water) must be reported immediately to CDPHE. Any accidental discharge to the sanitary sewer system must be reported immediately to the local sewer authority and the affected wastewater treatment plant. For additional regarding releases to water, please see “Guidance for Reporting Spills under the Colorado Water Quality Control Act and Colorado Discharge Permits” at http://www.cdphe.state.co.us/op/wqcc/Resources/Gui dance/spillguidance.pdf. Clean Air Act Hazardous air pollutants (HAPs) are designated as hazardous substances under CERCLA. If a facility has an air permit but the permit does not allow for or does not specify the release of a substance, or if the facility does not have an air permit, then all releases in excess of the CERCLA / EPCRA reportable quantity for that substance must be reported to the National Response Center and CDPHE. If the facility releases more of a substance than is allowed under its air permit, the facility must also report the release. Discharges of a substance that are within the allowable limits specified in the facility’s permit do not need to be reported. Regulated Storage Tanks Owners and operators of regulated storage tank systems must report a release or suspected release of regulated substances to the Division of Oil and Public Safety at the Colorado Department of Labor and Employment within 24 hours. Under this program, the reportable quantity for petroleum releases is 25 gallons or more, or any amount that causes a sheen on nearby surface water. Spills of less than 25 gallons of petroleum must be immediately contained and cleaned up. If cleanup cannot be accomplished within 24 hours, the Division of Oil and Public Safety must be notified immediately. Spills of hazardous substances from tanks in excess of the CERCLA or EPCRA reportable quantity must be reported immediately to the National Response Center, CDPHE and the local fire authority, and to the Division of Oil and Public Safety within 24 hours. Transportation and Pipelines The person in physical possession of a hazardous material must notify the National Response Center as soon as practical, but not to exceed 12 hours after the incident, if as a direct result of the hazardous material, a person is killed or injured, there is an evacuation of the general public lasting more than an hour, a major transportation artery is shut down for an hour or more, the flight pattern of an aircraft is altered, there is fire, spillage or suspected contamination Radiation Incident Reporting Line (24-hour) 303-877-9757 Colorado State Patrol (24-hour) 303-239-4501 Division of Oil and Public Safety (business hours) 303-318-8547 Oil and Gas Conservation Commission (business hours) 303-894-2100 Colorado Public Utilities Commission Gas Pipeline Safety Section (business hours) 303-894-2851 Local Emergency Planning Committees (to obtain list, business hours) 720-852-6603 Environmental Spill Reporting Colorado Department of Public Health and Environment Denver, CO 80246-1530 http://www.cdphe.state.co.us January 2009 4300 Cherry Creek Drive South When a release of a hazardous material or other substance occurs to the environment, there are a number of reporting and notification requirements that must be followed by the company or individual responsible for the release. Most spills are covered by more than one reporting requirement, and all requirements must be met. In addition to verbal notification, written reports are generally required. This brochure briefly explains the major requirements. A more detailed description is provided in the “Reporting Environmental Releases in Colorado” Guidance Document, available on the web. Releases that must be reported to the Colorado Department of Public Health and Environment (CDPHE) may be reported to the Colorado Environmental Release and Incident Reporting Line. 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 13, Sep 10, 2018 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Sep 20, 2015—Oct 21, 2017 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 7 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 13, Sep 10, 2018 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Sep 20, 2015—Oct 21, 2017 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 7 of the version date(s) listed below. Soil Survey Area: Larimer County Area, Colorado Survey Area Data: Version 13, Sep 10, 2018 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Sep 20, 2015—Oct 21, 2017 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 8 Utility Locate Potholing Fee: $ $10.00 per Pothole Pavement Impact Fee: $ _ ____ x _____ Excavation ft 2 x Cost/ ft 2 1 to 100 $ 3.85 101 to 500 2.75 501 to 3,000 2.20 over 3,000 1.65 Impact Fee Tripled if pavement is less than 5 years Pavement Age: Sub-total $ Previous Payments - $ Total Due: $ Date Paid: Cash Check # Account # Field verification of excavation size: Conditions: Engineering Approval: Date: Applicant has read this permit and agrees to abide by the City of Fort Collins Standard Plans and Specifications and to any ordinances, special conditions, restrictions, and regulations that may be imposed by the Department of Engineering. Applicant's Signature: Date: Notify the Engineering Inspection Recorder at 416-2779 48 hours prior to any construction in the public right-of way. Revised 5/08 1. 2. 3. 4. 5. 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.