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HomeMy WebLinkAbout1.04 Storm Water Management PlanSTORM WATER MANAGEMENT PLAN FOR FEDEX GROUND FACILITY PREPARED FOR: CUT PROPERTIES, LLC PO Box 620 Basalt, Colorado 81621 (970) 379-6810 PREPARED BY: RICK ENGINEERING COMPANY, INC. 4 Inverness Court East #300 Englewood, CO 80112 (303) 225-9125 JN 4143 June 26, 2014 TABLE OF CONTENTS SUBJECT PAGE NO. 1.0 INTRODUCTION 1 1.1 Storm Water Management Plan 1 1.2 Site Location 2 1.3 Stormwater Team 2 1.4 Operators 3 2.0 NON -NUMERIC EFFLUENT LIMIT CONTROL MEASURES (GENERAL BEST MANAGEMENT PRACTICES) 3 3.0 SITE DESCRIPTION 7 3.1 General Site Parameters 7 3.2 Nature of Proposed Construction Activity 7 3.3 Sequence of Major Construction Activities 7 3.4 Pollutants Associated With Construction Activities (Other Than Sediment) 8 and Spill Control 4.0 CONTROLS 16 4.1 Erosion and Sediment Controls 17 4.1.1 Stabilization Practices 17 4.1.2 Structural Practices 19 4.2 Storm Water Management 20 4.3 Other Controls 21 4.3.I Waste Disposal 21 4.3.2 Dust Control 21 4.3.3 Concrete Washout„ 22 4.4 General 22 4.4.1 Approved State and/or Local Plans 22 4.4.2 Amendments 22 5.0 NON -STORM WATER DISCHARGES 23 6.0 MAINTENANCE 24 7.0 INSPECTIONS & RELEASE REPORTING REQUIREMENTS.................24 8.0 RETENTION OF RECORDS 28 9.0 STANDARD PERMIT CONDITIONS 28 9.1 Duty to Comply 28 9.2 Endangered Species and Critical Habitat 28 9.3 Upset 29 9.4 Bypass 29 10,0 REOPENER CLAUSE 30 TABLE OF CONTENTS - CONTINUED SUBJECT PAGE NO. 11.0 TERMINATION OF COVERAGE .30 12.0 CERTIFICATIONS 32 110 DESCRIPTION AND INSTRUCTIONS FOR FORMS 33 APPENDICES APPENDIX A Discharge Applications, CDPHE Authorization Certificate, and List of Recipients APPENDIX 13 List of Contractors/Subcontractors - Contractors/Subcontractors Certifications APPENDIX C Stormwater Team/Inspector Information & Qualifications APPENDIX D Proposed Construction Schedule APPENDIX E Amendments to S W MP APPENDIX F Field Maintenance Contact Person(s) APPENDIX G Inspector's Information, Inspection Guidelines and Inspection/Maintenance Records, Records of Stabilization APPENDIX I-1 Colorado Discharge Permit System General Permit for Stormwater Discharges Associated With Construction Activities, Permit No. COR - 030000 APPENDIX I Notice of Termination (NOT) APPENDIX J Non -numeric Effluent Limit Control Measures - Best Management Practices (BMP's) APPENDIX K Retention/Detention Basin andlor Sediment Basin Calculations LIST OF FIGURES FIGURE TITLE PAGE NO. 1-1 4-1 Site Location 5 Site Plan Pocket RICK ENGINEERING COMPANY FEDEX GROUND FACILITY—STORM WATER MANAGEMENT PLAN 1.0 INTRODUCTION This Storm Water Management Plan (SWMP) has been prepared for FedEx Ground Facility. This SWMP provides recommendations and procedures to fulfill storm water discharge requirements specified by the United States Environmental Protection Agency (USEPA) and the Colorado Department of Public Health and Environment (CDPHE). Site information, description and responsible parties are provided herein. 1.1 Storm Water Pollution Prevention Plan This SWMP has been prepared in accordance with the CDPHE Colorado Discharge Permit System (CPDS) Construction General Permit No. COR -030000 (General Permit), and the Operator has been assigned an Authorization Number to Discharge under the Permit . This SWMP has been developed and will be amended, when necessary, to: a Identify pollutant sources associated with construction activity that may affect the quality of the storm water runoff from construction sites. • Identify, construct and implement storm water Non -numeric Effluent Limit Control Measures, also referred to as Best Management Practices (BMP's), to reduce or eliminate pollutants in storm water discharges from the construction site both during and after construction. This SWMP will be implemented prior to the commencement of soil disturbing activities associated with new construction. All conditions of the General Permit will be complied with. A copy of the General Permit is included in this SWMP. The SWMP shall be kept at the construction site at all times during construction and is considered a document to be made available upon request by a representative of USEPA, CDPHE, and/or Garfield County. The operator must retain a copy of the site specific SWMP with a copy of the Authorization Certificate onsite while construction or support activities are actively underway. When construction or support activities are not actively underway, the operator shall make the SWMP locally available. The operator shall also post a sign or other notice near the main entrance of the construction site with the following information: a. The NPDES or CDPS authorization number for the project. b. A copy of the Discharge Authorization Certificate from CDPHE. This SWMP shall be amended within 7 calendar days if any or all of the following occur: (1) There is a change in design, construction, operation, or maintenance that may affect the quality of the storm water runoff. (2) It is in violation of, or does not meet any June 2014 Page 1 FEDEX GROUND FACILITY— STORM W4 TER MANAGEMENT PLAN condition of the CDPS Construction General Permit. (3) At the request of USEPA, CDPHE or Garfield County. If a change of ownership occurs for an individual lot, the new owner shall be informed of the provisions of the General Permit and provided with a copy of this SWMP for use until the new owner can develop a plan sheet of their own that shows the SWMP measures to be implemented on the individual lot. The new owner will need to complete and submit a new Discharge Application to the Colorado Department of Public Health and Environment, provide a copy of the authorization to the Garfield County, and amend this SWMP with their individual lot plan sheet. This SWMP, together with all inspection and maintenance reports and data records for the construction activity shall be retained at the construction site during all phases of construction. All reports and records must also be retained by the operator for a period of at least three years following filing of the NOT. This period may be extended by request of CDPHE. 1.2 Site Location FedEx Ground Facility is a 8.9 acre site, located in Section 27, Township 6 South, Range 89 West 6th P.M., Garfield County, Colorado. The improvements are bounded to the north by US Forest Service Station, to the south and east by the Roaring Fork. River, and to the west by Glenwood Springs Municipal Airport (See Figure 1-1). 1.3 Stormwater Team The Stormwater Team shall consist of all the members that are responsible for implementing and maintaining the measures as set forth in this document and the attached exhibits in compliance with the CDPS Construction General Permit. Each operator, or group of operators, is responsible for assembling a Stormwater Team and identifying therm in Appendix C. At a minimum, the name, title, qualifications, and individual responsibilities of each team member must be provided. All members must have access to an electronic or paper copy of the CDPS Construction General Permit, this document and other relevant information or documents kept with this document. 1.4 Operators The Developer of the property is CLH Propertis, LLC, and is the operator. They have operational control over construction plans and specifications for he entire construction site. Their mailing address and phone number is: CLH PROPERTIES, LLC PO Box 620 Basalt, Colorado 81621 RICK ENGINEERING COMPANY June 2014 Page 2 FEDEX GROUND FACILITY— STORM WATER MANAGEMENT PLAN (970) 379-6810 Jim Light is the General Contractor for this project and is also an operator. They have operational control over day-to-day activities for (list how much of the site, if only a portion of the site, describe in terms of size and location). Their mailing address and phone number is: Name: Address: Phone Number. Contact Name: The Discharge Application and Discharge Authorization for the Developer can be found in Appendix A. The General Contractor and any other entity involved with the construction of this project that is classified as an "operator" (as defined in Part A-4 of the Construction General Permit), will need to file a separate NOI to cover their scope of activities and insert their Discharge Application and Discharge Authorization in Appendix A. New operators must also receive authorization by certificate or "default" (within ten days of CDPHE's receipt of a correct Discharge Application by certified mail or other verifiable method) before assuming operational control or commencing work on site. They must also distribute their Discharge Authorization Certificate to Garfield County. 2.0 NON -NUMERIC EFFLUENT LIMIT CONTROL MEASURES Non -numeric Effluent Limit Control Measures as shown in Figure 4-1 shall be applied to prevent or minimize the discharge of pollutants. Non -numeric Effluent Limit Control Measures are also referred to as Best Management Practices (BMP's) throughout this text and the two terms are used interchangeably. The following good "housekeeping" BMP's should be used: • The contractor shall select the type of erosion and sedirnent controls that will retain sediment on site to the maximum extent practicable. All revised BMP's shall be identified and described in the SWMP In the event that the contractor needs to revise the type of erosion and sediment controls specified in this SWMP, they shall select the type of erosion and sediment controls that will retain sediment on site to the maximum extent practicable. All revised BMP's shall be identified and described in the SWMP. • Properly select, install, and maintain all BMP's per the manufacturers' specifications and good engineering practices so BMP's remain functional and effective. RICK ENGINEERING COMPANY June 2014 Page 3 FEDEX GROUND FACILITY— STORM WATER MANAGEMENT PLAN • Install sediment and perimeter control BMP's before upgradient land is disturbed. Temporary BMP's shall not be removed until final stabilization is achieved except when temporary control structures must be moved in order to allow construction activities to continue. In this instance, the operator shall implement equivalent measures to ensure the same level of protection in minimizing potential pollutant discharges. • Install interim and permanent erosion control BMP's to disturbed areas, Within fourteen calendar days of the last land disturbance, temporary BMP's must be installed or permanent stabilization must be initiated. • Designate areas for equipment maintenance and repair that are as far as possible from the nearest receiving water. • Provide receptacles at convenient locations and provide regular collection of wastes. • Locate equipment washdown areas on site, and provide appropriate control of wastewaters, • If hazardous, liquids and solids are to be stored on site then the contractor must provide protected storage areas for chemicals, paints, solvents, fertilizers, and other potentially toxic materials. These storage areas should be located as far as possible from the nearest receiving water to minimize storm water run-on, • Provide adequately maintained sanitary facilities, • Designate an area in which to park vehicles and construction equipment during off -hours. BMP's to contain spillage and prevent contamination of soil are listed in Section 3.4 and include drip pans to contain leaks and the use of absorbent material such as cat box litter, to clean up minor leaks. All spillage of that occurs shall be cleaned up immediately and disposed of, according to applicable federal, state and local laws. • All debris and waste should be properly disposed of according to applicable federal, state, and local laws. • If construction materials are stored on site, then they must be stored in designated areas until said materials are required. Also, all spillage that occurs must be cleaned up immediately and disposed of, according to applicable federal, state and local laws. At the time this SWMP was prepared, the services of a general contractor for this project had not been secured, When the general contractor receives this document and prior to the commencement of construction activities, they shall review the designated locations for: material and equipment storage area (which includes waste and hazardous materials), vehicle parking and washdown area, concrete washout area, construction site entrances, and BMP's, and RICK E. INEER1NC1 COMPANY June 2014 Page 4 FEDEX GROUND FACILITY— STORM WATER MANAGEMENT PLAN modify if necessary. The determination to modify these locations will be based on the guidelines described in this report, primarily from Section 3.4 and Appendix J. The general contractor shall show the locations of these areas on Figure 4-1_ Events occur throughout the duration of the construction project that may alter these locations. Therefore, Figure 4-1 will be revised/amended by the general contractor when appropriate. All revisions and/or amendments will be dated and attached. Superceded locations will be marked as such and will continue to be a part of this SWMP. In general, good housekeeping practices should be employed to: cover and store materials, where practical, minimize contact with rainfall and runoff/run-on; minimize waste; and properly dispose of waste and recycle where possible. Each contractor and subcontractor is encouraged to bring to the job site only the material to be used that day. Large material items should be placed adjacent to their installation locations so as to minimize handling. I3MP's have been outlined in Standard Plan No. M-208-1 as published by the Colorado Department of Transportation, dated July 2012. This Standard Plan has been included in Appendix J for use in implementing practices outlined in this SWMP. RICK E EE IN° COMPANY TM June 2014 Page 5 FEDEX GROUND FACILITY—STORM WATER MANAGEMENT PLAN THIS PROJECT SCALE: 3"= 1 MILE LOCATION MAP SECTION 27 T 6 5, R 89 W 6TH P.M. GARFIELD COUNTY, COLORADO FIGURE 1-1 LOCATION MAP RICK ENC? NI RING COMPANY June 2014 Page 6 FEDEX GROUND FACILITY—STORM WATER MANAGEMENT PLAN 3.0 SITE DESCRIPTION 3.1 General Site Parameters FedEx Ground Facility is an 8.9 acre site with approximately 4.5 acres being subject to construction activities. The soils characteristics are described in the geotechnical report, titled "Soil and Foundation Investigation for Fedex" prepared by LKP Engineering, Inc., dated December 2, 2013, LKP Project Number 13-2910. The typical soil profile consists of 1-2 feet topsoil over gravel with cobbles and boulders. No groundwater was encountered in the test pits.. Per the approved drainage report for this project, the existing percentage of impervious area is estimated to be XX%. Following construction, the estimated percentage of impervious area will be XX%. No data exists describing current runoff water quality. Figure 4-1 illustrates the proposed drainage patterns and slopes for the proposed construction activity. These areas will drain via surface flow to storm drains and improved channels, which will convey the runoff to settling basins and ultimately existing natural channels. The nearest receiving water, the Roaring Fork River, is approximately 0.1 miles from the site. This project is not located within Y mile of an Impaired Water (as listed under section 303(d) of the Clean Water Act). To the best of our knowledge, there are no wetlands located on or near the site. 3.2 Nature of Proposed Construction Activity The ultimate use of this site is a sorting and shipping facility for FedEx. The nature of the proposed construction activity covered under this permit is limited to site grading, paving, utility installation and building construction. 3.3 Sequence of Major Construction Activities At the time of authoring of this SWMP, the construction activity schedule was not available; therefore the owner/general contractor will attach a copy in Appendix D when they receive this document and prior to the commencement of construction activities. Events occur throughout the duration of the construction project that may alter the schedule. Therefore, it will be revised/amended by the owner/general contractor when appropriate. All revisions and/or amendments will be dated and attached. Superceded schedules will be marked superseded and continue to be a part of this SWMP. The general sequence of major construction activities will be as follows: ▪ Install stabilized construction entrance • Install structural sediment control measures • Clearing and grubbing • Install structural erosion control measures • Excavation RICK ENGINEERING COM PAN Y June 2014 Page 7 FEDEX GROUND FACILITY—STORM WATER MANAGEMENT PLAN • Install sedimentation basin • Soils import and export • Install perimeter sediment control measures (filter socks or equivalent) around soil stockpiles (see section 4.1.2 of this SWMP) • Rough grading • Where applicable, stabilize denuded areas and stockpiles within 14 days of last construction as stated in section 4.1 of this report. • Utility installation — Sewer, storm drain, water and dry utilities • Install storm drain inlet protection • Building construction • Install erosion control measures at street frontage for lot pads (V -ditch or equivalent) • Roadway fine grading and paving • Revegetation and slope protection (i.e. install permanent stabilization) • Remove accumulated sediment from basin • Remove structural erosion control measures and storm drain inlet protection once slopes have been stabilized 3.4 Pollutants Associated With Construction Activities (Other Than Sediment) Potential pollutants other than sediment associated with construction activity include solvents, metals, pesticides, (insecticides, fungicides, herbicides, rodenticides, etc.), petrochemicals (oils, gasoline, asphalt degreasers, etc.), plated products, asphalt/concrete, paints, wood, garbage, sanitary wastes, fertilizers, and wash waters associated with many of these products. Practices must be used to prevent these potential pollutants from leaving the construction site. Pollutants such as oils, waxes, and water -insoluble pesticides form surface films on water and solid particles. Also, oil films serve as a medium for concentrating water- soluble insecticides. Other than by use of very costly water -treatment facilities or extended runoff water detention periods, these pollutants become nearly impossible to control once present in the runoff. Procedures must be established to protect watercourses from damage by sediment and other pollutants generated during construction activities. The variety of pollutants and the severity of the damage caused depend upon a number of factors, including: • The nature of the construction activity some sites may store hazardous liquids and solid non -wastes on site. • The physical characteristics of the construction site, including weather, time of year for construction (dry or rainy season), topography, soil conditions, drainage systems, etc. RICK ENGINEERING COMPANY 1," June 2014 Page 8 FEDEX GROUND FACILITY— STORM WATER MANAGEMENT PLAN • The proximity, volume, and quality of the receiving waters (i.e. the amount and purity of the water receiving the contaminated runoff). The physical characteristics of the construction site have a significant impact on the potential discharge of pollutants from construction activities. As with sediment, the vast majority of all pollutants are carried into the receiving waters via storm runoff. The amount of runoff discharging from a construction site depends upon the several hydrologic factors. These factors include the rainfall intensity and frequency, the infiltration rate of the soil; the surface roughness; and the length and steepness of the longest watercourse. Large areas that have been denuded (stripped of vegetation), have long slopes, steep slopes, compacted soils, and high intensity rainfall are conducive to increased runoff. The most economical and effective controls for these potential pollutants (other than sediment) generated on the construction site are the exercise of good "housekeeping" practices and an awareness by construction workers, planners, engineers, and developers of the need and purpose of compliance with federal, state, and local regulations. The following general procedures shall be implemented: • Containers with potential pollutants must be located in a designated area, as far as possible from any receiving waters • During the rainy season, the storage areas with potential pollutants shall have a permanent cover and side wind protection, or be covered during non -working days and prior to rain events • Dumpsters used to store items awaiting transfer to an off-site recycling or disposal facility must have a cover. Dumpsters should be in good condition without corrosion or leaking seams, and be located as far as possible from any receiving waters • Garbage dumpsters shall be replaced if they are deteriorating to the point where leakage is occurring and should be covered to prevent storrn water from entering. • Where material is temporarily stored in drums, a containinent system shall be used. The volume of the secondary containment provided should be at least 110% of the largest stored container. • Drums stored in an area where unauthorized persons may gain access must be secured in a manner that prevents accidental spillage, pilferage or any unauthorized use. • Lids should be tightly closed • Use plastic sheeting to line the area. • Keep a list of products in storage. • Check containers periodically for leaks or deterioration. • In case of a leak, put original container into a larger container and label it properl y. RICK ENOII.1I:ERINu COMPANY June 2014 Page 9 FEDEX GROUND FACILITY— STORM WATER MANAGEMENT PLAN • Post information for procedures in case of spills. Persons trained in handling spills should be on-site or on-call at all times. Materials for cleaning up spills should be kept on-site and easily available. Spills should be cleaned up immediately and the contaminated material properly disposed of. • An employee trained in emergency spill cleanup procedures should be present when dangerous wastes, liquid chemicals or other wastes are loaded or unloaded. • Construction activity accumulating dangerous wastes that do not contain "free liquids" should be protected from storm water run on. In the event that any of the following potential construction -related pollutants are to be stored on site, the following specific information summarizes the nature of the pollutant and control practices to be utilized: POTENTIAL CONSTRUCTION - RELATED POLLUTANTS: (A) Solvents Construction activity often uses solvents for de -greasing and cleaning machinery and machinery parts. Roofing activities may produce residual tars, sealing compounds, spent solvents, kerosene, and soap cleaners. For sheet metal activities, small quantities of acid and solvent cleaners such as kerosene, metal shavings, adhesive residues, and enamel coatings may be produced. Solvents that become waste material are classified as dangerous waste. Control BMP's: Solvents and solvent -associated wastes will be stored in containers. These containers must be stored in an area away from the normal flow of construction traffic away from discharge locations and must be covered at all times to prevent stormwater contamination due to overflows and spills. The following practices apply to these containers that are stored outside in a temporary storage area: • TJse non -caustic detergents for parts cleaning. • Use detergent -based or water-based cleaning systems in place of organic solvent degreasers. • Replace chlorinated organic solvents (1,1,1 -trichloroethane, methylene chloride, etc.) with non -chlorinated solvents. Non -chlorinated solvents, such as kerosene or mineral spirits, are less toxic and less expensive to dispose of. Check the list of active ingredients to see whether it contains chlorinated solvents (The "chlor" term indicates that the solvent is chlorinated). • Choose cleaning agents that can be recycled. RICK ENGIN kERING COMPANY ThI June 2014 Page 10 FEDEX GROUND FACILITY— STORM WATER MANAGEMENT PLAN (B) Metals Various types of metals are used on a construction site. Control BMP's: Where metals are temporarily stored outside, temporary plastic sheeting shall be placed over the stockpile during the rainy season. This material shall be stored in a location that prevents the run-on of uncontaminated storm water from adjacent areas as well as runoff from the stockpile area. (C) Petroleum Products Petroleum products are widely used during construction activities_ These products are used as fuels and lubricants for vehicular operations, power tools, and general equipment maintenance. These pollutants include oils, fuels such as gasoline, diesel oil, kerosene, lubricating oils, and grease. Asphalt paving can be a pollutant source as it continues to release various oils for a considerable Length of time. Most of these pollutants adhere to soil particles and other surfaces easily. Control BMP's: As in the case of all hazardous materials, petroleum products shall be properly labeled and should be stored in a locked, weather resistant storage area. Another important control practice is to retain sediments containing oil on the construction site. Soil erosion and sediment control practices can effectively accomplish this. Improved maintenance and safe storage facilities will reduce the potential for contaminating construction sites. Treat collected sediment that is contaminated with petroleum products as material waste. Oil and oily wastes such as crankcase oil, cans, rags, and paper dropped in oils and lubricants, can be best disposed of in proper receptacles or recycled. Waste oil for recycling shall not be mixed with degreasers, solvents, antifreeze, or brake fluid. The dumping of these wastes in sewers and other drainage channels is illegal and could result in fines or job shutdown. A further source of these pollutants is leaking vehicles. Proper maintenance of equipment will further reduce pollution by this source. (D) Plated Products Plated products used on a construction site include galvanized metals, and other metal plated products. Control BMP's: Where plated products are temporarily stored outside, temporary plastic sheeting shall be placed over the stockpile during the rainy season. This material shall be stored in a location that prevents the run-on of uncontaminated storm water from adjacent areas as well as runoff from the stockpile area. (E) Asphalt and Concrete RICK ENGINEERING COMPANY 1,1 June 2014 Page I 1 FEDEX GROUND FACILITY—STORM WATER MANAGEMENT PLAN 1) Asphalt (Hot and Cold Mix) Asphalt paving requires dump trucks, pavers, tack coat tankers, and pavement rollers. Storm water passing over this equipment may be contaminated by petroleum resolve. Storm water from parking areas will contain undesirable concentrations of oil and grease, suspended particulates, and metals such as lead, cadmium, and zinc. 1t will also contain the organic by-products of engine combustion. Control BMP's: Source control BMP's such as good housekeeping should always be used to control storm water pollution. All paving machinery shall be parked in a designated area, and drip pans and absorbent material should be provided. Paving machinery shall be inspected and maintained regularly to minimize leaks and drips. Inlets and drainageways shall be protected by diverting, trapping, and/or filtering runoff. 2) Concrete On construction sites, concrete may be pumped or transferred from trucks into the required area (i.e., slab and footing foundations). Cement (in bags) may be stored onsite for small jobs. Concrete wash water from concrete trucks and mixers is also a pollutant. Control BMP's: The control of this pollutant involves good site planning. Handling of cement or concrete washout must be limited to designated, appropriate washout areas. Neutralization of this pollutant often provides the best treatment. • Transfer of concrete/cement from vehicles to the pour site should be performed so that leaks can be confined in the existing containment. • Place temporary plastic sheeting over stored concrete material during the rainy and windy conditions. • Store material in a location that prevents the run-on of uncontaminated storm water from adjacent areas as well as runoff from the stockpile area. ■ Designate concrete washout areas away from storm drains and waterways. (F) Pesticides In the event that the contractor will not be using a commercial pesticide application company the following shall apply: RICK ENoINEI aINo COMPANY June 2014 Page 12 FEDEX GROUND FACILITY STORM WATER MANAGEMENT PLAN Although the word "pesticide" is generally thought of as only those chemicals, which attack insect populations, here the word is used to include herbicides and rodenticides as well as chemicals commonly known as pesticides. Insecticides, rodenticides, and herbicides have historically been used on construction sites to improve health and safety, maintain a pleasant environment, and reduce maintenance and fire hazards. Often, rodents are attracted to construction sites and rodenticides are used to control their presence. Pesticides should only be used in conjunction with applicable government standards. A needs assessment, which determines which method to use and the necessity of controlling a pest population, should be applied. Pesticides should be the tool of last resort; methods which are the least disruptive to the environment and to human health should be used first. Control BMP's: If pesticides must be used, clearance for use of any of these chemicals is often required by restrictive federal and state regulations. All pesticides should be stored and applied accordingly. As in the case of all hazardous materials, pesticides should be stored and applied accordingly. An awareness of the need to adhere to recommended dosages, type of application equipment, time of application, cleaning of application equipment, and safe disposal of these chemicals, will go far in limiting the pollution of waterways. Application rates should conform to registered label directions. Many of these compounds are considered "dangerous wastes" and must be disposed of properly. Disposal of excess pesticides and pesticide -related wastes should conform to registered label directions and as set forth in applicable federal, state and local regulations. General disposal procedures are: • Dispose of materials through a licensed waste management firm, treatment, storage, and disposal company (TSD). • Use all materials or give away to a garden center, landscape service, etc. • Triple rinse containers before disposal. Warning signals should be placed in areas recently sprayed or treated. Persons involved in the mixing and application of these chemicals, to be in compliance with the law, must wear suitable protective clothing. Other practices include: • Keep in a cool, dry place. Many pesticides rapidly lose their effectiveness if stored in areas exposed to heat. • The applicator must follow the notification requirements of CDPHE. Adjacent properties owners should also be notified prior to spraying. RICK ENGE ER[ 4Cr COMPANY me June 2014 Page 13 FEDEX GROUND FACILITY—STORM WATER MANAGEMENT PLAN (G) Nutrient Application and Control In the event that a commercial application company is not employed for nutrient and application control, the following practices shall be followed:. Inorganic nutrient pollution is most often caused by fertilizers used in revegetating graded areas. The use of proper soil -stabilization measures and sediment control can be effective means of keeping these materials out of waterways. Control BMP's: Fertilizers should be properly labeled and should be stored in a locked, weather -resistant storage area. Nutrient pollution can be minimized by working fertilizers into the soil to depths of four -to -six inches, and by proper timing of the application. Hydro -seeding operations, in which seed and fertilizers are applied to the ground surface in a one-step operation, are more conducive to nutrient pollution than are conventional seedbed -preparation operations, where the fertilizers are tilled into the soil. In the case of surface dressings, control can be achieved by applying the required quantity of fertilizer in more than one operation. For example, an area requiring an application of 500 pounds per acre of fertilizer could be dressed with about 125 pounds per acre at four separate times over the growing season. Use of fertilizers containing little or no phosphorus may be required by local authorities. In any event, great care should be taken to use only the minimum amount of phosphorus needed, as determined by soil tests, or advice from the local Conservation District or Soil Conservation Service. Irnportation of topsoil is better than heavily liming and fertilizing exposed subsoil. (H) Paints Painting contractors will generate paint and other finishing residues, spent thinners, and paint containers. Paint is a chemical pollutant containing hazardous metallic pigments or biocides and is carried by sediment and runoff from construction sites. Control BIVIP's: Good housekeeping is the most important means of controlling pollution from paints. As in the case of all hazardous materials, paints should be properly labeled and should be stored in a locked, weather resistant storage area, Additionally, as little as 30 percent of the paint may reach the target from conventional airless spray guns; the rest is lost as overspray. Paint solids from overspray are deposited on the ground where they can contaminate storm water. A large percentage of this pollutant can be effectively controlled through implementation of source control soil erosion and sedimentation control practices: RICK ENGINEERING COMPANY June 2014 Page 14 FEDEX GROUND FACILITY — STORM WATER MANAGEMENT PLAN • Spray equipment that delivers more paint to the target with less overspray should be used, such as electrostatic spray equipment, air -atomized spray guns, high-volume/low-pressure spray guns, and gravity -feed guns. • Use tarps and vacuums to collect solid wastes produced by sanding or painting. Tarps, drip pans, or other spill collection devices should be used to collect spills of paints, solvents, or other liquid materials. These wastes should be disposed of properly to keep them from contaminating storm water. The correct method of waste disposal varies with the material. Washed-up wastes from water-based paints may go into a sanitary sewer, but wastes from oil-based paints, cleaning solvents, thinners, and mineral spirits must be disposed of through a licensed waste management firm. (I) Applicators and Containers used for Paint and Other Materials Exterior Building Contractors will generate discharges from the washout and cleanout of stucco, paint, form release oils, curing compounds, and other construction materials. All applicators and containers used in the application of these materials needs to be properly managed during the cleaning process as follows: • Direct all washwater into a leak -proof container or leak -proof pit. The container or pit must be designed so that no overflows can occur due to inadequate sizing or precipitation. • Washout and cleanout activities must be locations as far away as possible from surface waters and storrnwater inlets or conveyances, and, to the extent practicable, designate areas to be used for these activities and conduct such activities only in these areas. • Handle washout or cleanout waste as follows a) Do not dump liquid wastes into storrn sewers and b) Dispose of liquid wastes in accordance with local laws. (J) Wood Treated Products This group includes wood products such as cut wood, treated wood, and when cutting equipment is employed where the by-products are chips and sawdust. The timber is typically moved by hand after being delivered by truck. Other wastes include wood and paper from packaging and building materials. Control BMP's: The major control mechanism for these pollutants is to provide adequate disposal facilities. Collected wood waste should be removed and disposed of at authorized disposal areas. Frequent garbage removal helps RICK ENGINEERING' COMPANY June 2014 Page 15 FEDEX GROUND FACILITY— STORM WATER MANAGEMENT PLAN maintain construction sites in a clean and effective manner. Source control BMP's such as good housekeeping should always be used to control storm water pollution. Outside areas where wood products are stored should be located where storm runoff through the area is minimal. Remove and properly dispose of soils with visible surface contamination (green soil) to decrease the spread of chemicals to ground water and surface water and take steps to prevent future occurrences. • Keep treated wood out of areas where surface water drainage is apparent. Store material in a location that prevents the run-on of uncontaminated storm water from adjacent areas as well as runoff from the stockpile area. SPILL CONTROL PROCEDURES: Even with careful handling and management of materials, spills still may occur. Spill control procedures shall be implemented in order to minimize or prevent the discharge of spilled material to the drainage system or watercourses. Control BMP's: The major control mechanism for spills is to properly educate employees and subcontractors on what to do in the case of a spill for each material they use. All containers susceptible to spillage or leakage must be clearly identifiable and labeled to encourage proper handling and facilitate rapid response in the event of a spill or leak. Keep proper storage, clean-up and spill reporting instructions posted on site at all times, and verify weekly that spill control clean up materials are located near material storage areas, unloading, and use areas. Preventative measures should be in place to isolate containers from high traffic areas and contain spills at the site of contamination via secondary containment. Spills need to be immediately and properly contained to prevent contaminating runoff. The magnitude of a spill will determine the level of response required to mitigate it: • Minor spills typically involve small quantities of oil, gasoline, paint, etc., which can be controlled by the first responder at the discovery of the spill. • Semi -significant spills still can be controlled by the first responder along with the aid of other personnel such as laborers and the foreman, etc. This response may require the cessation of all other activities. • For significant or hazardous spills that cannot be controlled by personnel in the immediate vicinity, notify the local emergency response by dialing 911, in addition to notifying the proper city/county RICK ENGINEERING COMPANY }MI June. 2014 Pagc 16 FEDEX GROUND FACILITY— STORM WATER MANAGEMENT PLAN officials. The responsible party for detecting and responding to spills and leaks is: Contact Name: Company Name: Company Title: Address: Phone Number: See Appendix I for additional information regarding specific BMP's to contain spills. 4.0 CONTROLS 4.1 Erosion and Sediment Controls Prior to, during, and after site clearing the contractor should install erosion and sediment control measures at the locations indicated and as determined by his construction sequencing and/or phasing, and noted in the construction schedule. Wherever possible, the construction should be phased to minimize the amount and length of time that soils are exposed and the contractor should not disturb an area until it is necessary for construction to proceed. The SWMP shall be kept current for all phases of construction activity. The general contractor shall keep an up-to-date record of the type, location, and date of control measures that have been installed during the various phases of construction by means of a redlined working drawing, or other method. In addition, the Contractor/Subcontractor Certification sheets in Appendix B should be filled out to designate and keep track of which party is responsible for which BMP. 4.1.1 Stabilization Practices As much as possible, existing vegetation should be preserved in place, especially around the perimeter of the site where it can act as an effective means to reduce runoff velocity, thus reducing erosion and allowing sedimentation prior to leaving the site. Where this is not possible, existing vegetation should be relocated at critical locations, such as adjacent to receiving waters or at the top and bottom of a slope. In addition, utilizing preserved -in-place vegetation within disturbed areas will provide canopy and root systems to protect and hold soil in place. For FedEx Ground Facility, all vegetation outside the limits of construction is to remain undisturbed; there is no vegetation within the limits of disturbance that will be preserved, as noted in Figure 4-1. If dictated by construction progression, RICK NGINEERING COMPANI ryo June 2014 Page 17 FEDEX GROUND FACILITY— STORM WATER MANAGEMENT PLAN temporary stabilization will also be provided, by means of temporary seeding or mulching, to disturbed areas where activities have temporarily ceased. If revegetation plans include seeding, use the seed mix and application specifications listed by the Landscape Plans. Interim soil stabilization will be achieved by means of establishing temporary vegetation, applying a stabilizing agent, andlor other similar measures. The frequency of applying the agent will be dependent on project weather conditions. The Contractor shall continuously monitor the site conditions and apply stabilizing agent as necessary to conform to the requirements of the Air Quality Perrnit, as well as to minimize dust generated by wind and construction activities. Water crusting may be used for dust control, but will not qualify as soil stabilization. Chemicals associated with interim soil stabilization shall be minimized in discharges by appropriate BMP's (see previous section 3.4), and discharges should be directed to sediment control measures. Permanent soil stabilization of all surfaces shall be per the approved Grading and Improvement Plans. This includes placing riprap on slopes steeper than 3:1 up to 2:1, at culverts and scuppers, and elsewhere as indicated on the Plans. All culverts shall additionally be protected at the inlets and outlets by grouted rip -rap for a minimum of 5' around the culverts on the slope to prevent erosion and penetration around the pipes. Slopes 3:1 and flatter will be re -vegetated as shown on the Approved Grading Plans andlor the Approved Landscape Plans. Slopes that will be re -vegetated should be roughened perpendicular to the direction of runoff; by means of slope tracking, or other method, in order to facilitate the establishment of vegetation, and to modify flow velocities over the exposed slope. Stone paving will stabilize roadway and parking areas. The operator must initiate stabilization measures on disturbed areas as soon as practicable, but no more than 14 days after construction activity has temporarily or permanently ceased, except for the following conditions: • Where earth -disturbing activity will resume within fourteen days from cessation. • Where stabilization by the 14th day is precluded by snow cover or frozen ground conditions, stabilization measures will be initiated as soon as practicable. • When vegetative measures are used and it is during seasonally arid or drought conditions (see General Permit for definitions), stabilization measures shall be initiated as soon as practicable. • Where undisturbed areas are awaiting vegetative stabilization for periods greater than 14 calendar days after the most recent disturbance, non -vegetative methods of stabilization shall be employed and described in the SWMP, RICK ENGINEERING COMPANY Ito June 2014 Page 18 FEDEX GROUND FACILITY— STORM WATER MANAGEMENT PLAN Note: The operator is not expected to apply temporary or permanent stabilization measures to areas that are in intended to remain unvegetated following construction (e.g., dirt access roads, utility pole pads, areas being used for storage of vehicles, equipment, or materials). The general contractor shall keep an up-to-date record of: • The dates and locations where major grading activities occur • When construction activities temporarily or permanently cease • Dates when stabilization measures are initiated and completed and reasons for delay, if applicable under Part 3.1.2. of the General Permit. 4.1.2 Structural Practices (See Figure 4-1) Structural sediment control measures may include but are not limited to the use of: filter socks, silt fences, gravel berms, straw bales, gravel -filled bags, sand bags, and compacted, vegetated berms. Filter socks, V -ditches, gravel bags, and silt fence will be used unless the SWMP is modified. These measures are to be installed at the time appropriate with the related construction activity, as designated on the construction schedule in Appendix D. This protection, as shown in Figure 4-1, shall be continuous, and have no breaks except at designated locations. These devices are to be installed per manufacturers' specifications and Best Management Practices guidelines listed in Appendix J These devices shall be kept in good and effective operating condition until final stabilization is achieved. If damage occurs it is the responsibility of the contractor to perform maintenance according to the specifications and schedules outlined in Part 3.1 of the Construction General Permit. Appendix G contains inspection records and maintenance suggestions (refer to Sections 6.0 and 7.0 of this SWMP). If sediment or debris reaches one third the height of the silt fence or one half the height of the fiber roll, the contractor is to remove the material, and dispose of it as construction waste as outlined in sub -section 4.3,1 of this SWMP. The operator shall use silt fences, vegetative buffer strips, sediment traps, V - ditches, or equivalent sediment control BMP's at all down slope boundaries of the disturbed area. Soil stockpiles shall not be placed in or near stormwater conveyances or streets leading to stormwater conveyances and must also have perimeter sediment control BMP's. Sediment control BMP's (Filter socks or equivalent) are to be used on the perimeter of soil stockpiles when stockpiles are not actively being worked (i.e. evenings, weekends, and other down times). During periods of inactivity, all stockpiles shall be covered or stabilized by means of chemical soil binders with perimeter controls to prevent runoff pollutants from contaminating other portions of the site. For inlets that discharge, or could discharge to the waters of the US or to a local MS4, the operator shall provide effective sediment control BMP's (gravel bags or equivalent control that allows flow while retaining sediment) at all operational RICK ENGZNEER!Nc"r COMPANY INA June 2014 Page 19 ENGINEERING- COMPANY RICK FEDEX GROUND FACILITY—STORM WATER MANAGEMENT PLAN inlets at all times during construction until all sources with potential for discharge to the inlet are stabilized. The contractor and subcontractors shall take all necessary and proper precautions to protect the construction site and adjacent properties from any erosion and siltation that results from construction activities for FedEx Ground Facility. Once final stabilization, as defined in Part C.4 -c of the General Permit, has been achieved and all construction activities have ended, temporary structural controls must be removed. 4.2 Storm Water Management The contractor and subcontractors shall take all necessary and proper precautions to protect adjacent property owners and natural washes from any and all damage that may occur as a result of storm water runoff and/or deposition of debris resulting from any or all work associated with their construction activities. Any off-site accumulations of sediment or debris must be removed, in a timely manner as not to adversely affect downstream water quality, and disposed of as construction debris as outlined in sub- section 4.3.1 of this SWMP. Good housekeeping practices will also be implemented for FedEx Ground Facility. These practices include the controlled application of carefully selected fertilizers and pesticides and a general onsite maintenance and disposal program to keep the site free of litter and debris. Sediment basins for this site has been provided to allow the sediment in the runoff to settle out before the runoff leaves the site. These basins have been sized to accommodate or exceed the capacity for the expected runoff volumes as shown in the Approved Drainage report and provided in Appendix K. Measures shall be put in place to collect sediment prior to runoff entering the basin. Once final stabilization measures are in place, these basins will remain and will serve as the retention/detention basin for the project. When accumulated sediment at the bottom of the basins reaches 50% of the basin's capacity, the sediment should be removed by the contractor and be disposed as construction debris as outlined in sub -section 4.3.1 of this SWMP. For linear projects and drainage locations serving less than 10 acres, smaller sediment basins and/or traps shall be used. Velocity dissipation for concentrated flows will be provided by means of rip -rap aprons, which will slow the discharge to a non-erosive velocity_ These measures will remain permanently in place at locations noted in the approved grading plans. Rip -rap is to be installed as soon as aprons are graded so erosion is minimized. Other storm water management practices may include vegetated swales and natural depressions to achieve flow attenuation. If the contractor chooses to deviate from practices recommended herein, this SWMP shall be amended to reflect the chosen technique(s). These amendment(s) shall include an explanation of the technical basis used to select the control practice(s). r qi June 2014 Page 20 FEDEX GROUND FACILITY—STORM WATER MANAGEMENT PLAN 4.3 Other Controls 4.3.1 Waste Disposal Except as authorized by a Section 404 Permit, no solid materials of any kind, including building material, are to be discharged offsite. Waste receptacles are to be provided at convenient locations, with regular collection schedules. All debris and waste should be properly disposed of according to applicable federal, state and local laws. Receptacles are to be covered and not subjected to storm water run-on or runoff No material, liquid or otherwise, is to be discharged through the storm drain system except as noted in Section 5.0 of this SWMP. 4.3.2 Dust Control Dust control measures are to conform to the Air Pollution Control Permit and any measures that may be specified by the Geotechnical Engineer. The geotechnical engineering evaluation shall be reviewed by the contractor and subcontractors as it relates to this SWMP. The nature of fill material shall be as described within the above -referenced evaluation. The tracking of sediment onto public streets is normally attributed to vehicles driving through unpaved areas and onto said streets. For the time period just prior to the start of earth disturbing activity, to prior to site paving, the construction site entrance shall be protected by a 70 -foot long, six-inch deep well -graded gravel apron(s) (rock diameter = 1" to 3") placed over filter fabric, with dimensions to fit the driveway width (see Figure 4-1). The gravel apron is to be inspected regularly and maintained as necessary. The public street, Airport Center Road shall also be inspected and cleaned as necessary by means of sweeping by the contractor, should tracking occur. Street cleaning debris shall be disposed of in the same manner as all other construction waste as herein described. The gravel apron may be salvaged for use elsewhere or thoroughly mixed into the subgrade immediately prior to paving activities. The contractor shall consult with the Geotechnical Engineer for this project for further recommendations should this option be used. 4.3.3 Concrete Washout Area Concrete washouts are an allowable non-stormwater discharge under the Construction General Permit. The General Permit allows the discharge of wastewater resulting from washing concrete from trucks, pumps, and ancillary equipment to an impoundment if the conditions listed in General PErmit are met. 4.4 General RICK ENOINLERINo CoNu'ANY June 2W4 Page 21 FEDEX GROUND FACILITY—STORM JP2I TER MANAGEMENT PLAN 4,4.1 Approved State and/or Local Plans Detailed grading and drainage plans have been prepared by Rick. Engineering Company, Inc. in accordance with local agency requirements. Garfield County is the local agency responsible for administering the Grading and Drainage plans through the development permitting process. The basic requirements and recommendations of the local land development ordinances have been integrated into this SWMP. 4.4.2 Amendments This SWMP shall be amended within 7 calendar days whenever there is a change in design, construction, operation, or maintenance which has a significant effect on the potential for the discharge of pollutants to the Waters of the United States and which has not otherwise been addressed in the plan, or if the SWMP proves to be ineffective in eliminating or significantly minimizing pollutants, or in otherwise achieving the general objectives of controlling pollutants in storm water discharges. When an amendment occurs that is required by CDPHE, the permittee shall provide a written certification that the SWMP has been modified to address such changes within 15 calendar days of the receipt of CDPHE's notification. Changes in the revised SWMP shall be implemented before the next rain event whenever practicable. If this is impracticable, then the reason(s) shall be documented in the SWMP and revisions implemented as soon as possible. 5.0 NON -STORM WATER DISCHARGES The operator shall reduce or eliminate discharges of non-storrnwater from construction sites to the extent practicable. The following are the only non-stormwater discharges allowed under this permit, provided appropriate control measures are in place to assure compliance with Part 3 of the CGP. i. Discharges from emergency fire -fighting activities; ii. Water used to control dust, provided reclaimed water or other wastewaters are not used; M. Routine external building wash down where detergents are not used; iv. Water used to rinse vehicles and equipment, provided that reclaimed water or other wastewater is not used and no soaps, solvents, detergents, oils, grease or fuels are present in the rinsate; RICK ENoINEERCNO COMPANY June 2014 Page 22 FEDEX GROUND FACILITY— STORM WATER MANAGEMENT PLAN v. Pavement wash waters where spills or leaks of toxic or hazardous materials have not occurred (unless all spilled material has been removed) and where detergents are not used; vi. Uncontaminated air conditioning or compressor condensate; vii. Uncontaminated groundwater or spring water; viii. Foundation or footing drains where flows are not contaminated with process materials such as solvents; ix. Water from fire fighting system testing and maintenance, including hydrant flushings; x. Discharges related to installation and maintenance of potable water supply systems, including disinfection and flushing activities, discharges resulting from pressure releases or overflows, and discharges from wells approved by CDPHE for drinking water use; xi. Hydrostatic testing of new pipes, tanks or vessels using potable water, surface water, or uncontaminated groundwater; xii. Water used for compacting soil, provided reclaimed water or other wastewaters are not used; xiii. Water used for drilling and coring such as for evaluation of foundation materials. where flows are not contaminated with additives; and. xiv. Uncontaminated waters obtained from dewatering operations/ foundations in preparation for and during excavation and construction. The anticipated non -storm water discharge expected on this site are dust control, vehicle & equipment wash water, pavement rinse water, air conditioning or compressor condensate, groundwater, foundation or footing drains, line testing, soil compaction & water obtained from dewatering operations. If other allowable non -storm water discharges exist (see Construction General Permit), this SWMP must be updated to provide source locations and appropriate BMP's. Although these flows may occur onsite after vegetation is established, when pipes are flushed and streets are washed, efforts should be made to control and direct these flows through sediment control structures prior to leaving the site to the maximum extent practicable. In addition, all superchlorinated wastewater associated with water line flushing will be held on site until dechlorinated. Reclaimed water may be used for dust control and landscape irrigation, but it must not be allowed to discharge from the site or be used during rain events, The operator must show all sources and locations of likely non-stormwater discharges on Figure 4-1. No dry weather sediment discharges are allowed under the Construction General Permit. Extra BMP's may need to be installed to ensure that non-stormwater discharges are sediment free before they reach any waterbody or dry washes, and all non-stormwater discharges shall be routed to sediment control measures. 6.0 MAINTENANCE Good housekeeping practices shall be implemented for FedEx Ground Facility. These practices include proper maintenance of sediment and structural controls as well as vehicle and material storage areas. Required aspects of maintenance include proper inspections and required repairs, record keeping, tracking, and documentation practices. RICK ENGINEERING COMPANY June 2014 Page 23 FEDEX GROUND FACILITY— STORM WATER MANAGEMENT PLAN A contact person(s) responsible for responding to maintenance questions has been identified in the Field Maintenance Contact Person form in Appendix F of this SWMP. Maintenance procedures should follow the Construction General Permit Part C.3 -c as well as those BMP's outlined within this SWMP and Appendices E and H. 7.0 INSPECTIONS AND REPORTING REQUIREMENTS INSPECTIONS The project area shall be regularly inspected by qualified personnel (see Construction General Permit for personnel qualifications). The inspector shall be either the operator's own personnel or consultants hired to perform the inspections, to ensure that it is maintained in good and effective condition until final stabilization has been achieved. The inspector shall be identified by name, title, and qualifications in Appendix C before construction begins by inserting all relevant information in Appendix C. The inspectors must be knowledgeable and possess the skills to assess conditions at the construction site that could impact stormwater quality and assess the effectiveness of sedimentation and erosion control measures chosen to control the quality of the site's stormwater discharges. Erosion and sediment control measures, vehicle and material storage areas, graded surfaces, landscaping areas, and all possible pollutant sources and discharge locations should be inspected on a regular basis. Other areas to be inspected include: loading and unloading operations, significant dust or particulate generating processes, and onsite waste management and disposal practices. Site access points should also be inspected to determine if sediment is being tracked onto Airport Center Road Prior to the commencement of land disturbing activity, the Operator shall establish which of the following inspection schedules will be followed. I. Minimum Inspection Schedule. The operator shall ensure inspections are performed at the site as indicated below to ensure control measures are functional and that the SWMP is being properly implemented. To determine the amount of rainfall from a storm event that occurs on the site, the operator shall obtain rainfall information from either a properly maintained rain gauge on the site, or a weather station that is representative of the site's location. a. The site will be inspected a minimum of once every 7 calendar days, or b. The site will be inspected a minimum of once every 14 calendar days, and also within 24 hours of the end of each storm event of 0.5 inch or greater in 24 hours; or 2. Inspection Schedule for Inactive and Unstaffed Sites, A site is inactive and unstaffed that will have an anticipated period of no construction activity for at least 2 consecutive months. Inactive RICK ENGINEERING COMPANY TM June 2014 Page 24 FEDEX GROUND FACILITY —STORM WATER MANAGEMENT PLAN and unstaffed sites within 1/4 mile of an OA W or impaired water are not eligible for this reduced inspection frequency. Operator's responsibilities include: a. Immediately before becoming inactive and unstaffed, the operator shall perform an inspection in accordance with Part 4.4, All storinwater control measures must be m operational condition in accordance with Part 3.1 prior to becoming inactive and unstaffed; b. During the time the site is inactive and unstaffed, the operator shall perform an inspection at least once every month and within 24 hours of the end of each storm. c. All stormwater control measures must be maintained in operational condition; d. The site shall be secured, such as limited access, blocking or fencing; e. Maintain a statement in the SWMP indicating that the construction site is inactive and unstaffed and f. If circumstances change and the site becomes active and/or staffed, this exception no longer applies and the operator shall immediately resume the routine inspection schedule. CDPHE retains the authority to revoke this exception from routine inspections where it is determined that the discharge causes, has a reasonable potential to cause, or contribute to an exceedance of an applicable water quality standard, including designated uses. The inspection schedule to be followed is: Minimum Inspection Schedule The selected inspection schedule to be followed does not exempt the operators from non- compliance in the event of discharges between inspections. If discharges frequently occur between inspections, an evaluation of the selected BMP's as well as additional inspections may be necessary. The inspector shall determine, in his opinion or at the request of the operators or the Garfield County, if there is a need to inspect the site more frequently and document the reasons in this document. Disturbed areas and storage areas that are exposed to rainfall or run-on must be inspected for evidence of, or the potential for, pollutants entering site runoff. Based on inspection results, the site description and pollution prevention measures shall be revised within this SWMP if inadequacies are discovered. The inspection and plan review process shall include timely implementation of any changes to the SWMP. Changes to the SWMP shall occur within seven calendar days following the inspection and BMP's shall be implemented before the next anticipated storm event if practicable. If existing BIM's need to be modified or if additional BMP's are necessary, implementation shall be completed within seven calendar days or before the next anticipated storm event, whichever comes first. If implementation of the maintenance activities or amendments before the next storm event is impracticable, then the reason(s) for the delay must be documented in the SWMP and alternative BMP's must be implemented as soon as possible, Inspection records are included in Appendix G of this SWMP. As defined in the Construction RICK ENGINEERING COMPANY r.� June 2014 Page 25 ENGINEERING COMPANY FEDEX GROUND FACILITY— STORM WATER MANAGEMENT PLAN General Permit Part D.6 -b.2, the inspection reports should summarize the scope of inspections, name(s) and qualifications of inspection personnel, the inspection dates, weather observations, major observations, and remedial actions taken. These records shall be retained as part of the SWMP for at least three years after the NOT is submitted. All inspections shall be signed in accordance with Section 9.0 of this plan. Appendix G of this SWMP includes a table that describes the protective devices, what to look for, and maintenance of sediment control measures. Example checklists are included for checking areas for sediment and other potential pollutants and recording evidence. These checklists include: • visual inspection. • good housekeeping. • site assessment. These checklists are aids for the operator's inspector. They do not limit the responsibility of the operator to ensure compliance with permit requirements. SPILL REPORTING REQUIREMENTS In the event of a spill, the operator shall report to CDPHE any noncompliance that may endanger human health or the environment. The operator shall notify CDPHE within 24 hours or as soon as the site staff have knowledge of a spill by calling their spill report line at (303) 692-2000. A written submission shall also be provided to CDPHE within five days of the time the operator becomes aware of the release. The written submission shall contain a description of the type and volume of hazardous material, a description of the noncompliance and its cause; the period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance. Submissions shall be sent to: Colorado Department of Public Health and Environment Water Quality Control Division 4300 W. Cherry Creek Drive South (WQCD-P-B2) Denver, CO 80246-1530 (303) 692-2000 The Construction General Permit does not relieve the operator of the reporting requirements under 40 CFR 110, 40 CFR 117, and 40 CFR 302 relating to spills or other releases of oils or hazardous substances, RELEASE Ilii EXCESS OF REPORTABLE QUANTITIES Where a release containing a hazardous substance of oil in an amount equal to or in excess of a reportable quantity established under either 40 CFR 110, 40 CFR 117, or 40 CFR 302 occurs, the RICK EMI June 2014 Page 26 ENOINEERING COMPANY RICK FEDEX GROUND FACILITY—STORM WATER MANAGEMENT PLAN operator shall: I . Modify the SWMP within 7 calendar days of knowledge of the release to: provide a description of the release, the circumstances leading to the release, and the date of the release. In addition, SWMPs shall identify measures to prevent the reoccurrence of the releases and to respond to such releases; and 2. Provide notice to the National Response Center in accordance with 40 CFR 110, 40 CFR 117, and 40 CFR 302 within a 24 hour period, or as soon as the site staff have knowledge of the discharge. 8.0 RETENTION OF RECORDS A copy of this SWMP, all reports and records required by the CPDS Permit, and all data used to complete the Discharge Application, shall be retained by the operator for a period of at least three years from the date of fling of the NOT. CDPHE may extend this period by written notification prior to the end of the standard three-year period. A copy of this SWMP shall be retained at the construction site and available upon request at all times for viewing by a representative of USEPA, CDPHE, and/or Garfield County, from the date of project initiation to the date of the filing of the NOT. 9.0 STANDARD PERMIT CONDITIONS 9.1 Duty to Comply All conditions of the CPDS General Permit must be complied with. Any non-compliance will constitute a violation of the Clean Water Act and enforcement action may be taken. The Construction General Permit does not waive any other regulations or permit requirements that the operator is required to comply with. The operator is still held to all the requirements of the Clean Water Act, for example, even if the Construction General Permit does not cover all of its requirements. The contractor and subcontractors shall make every effort to minimize or prevent any improper or illegal discharges. If USEPA, CDPHE, or Garfield County request information regarding this SWMP or the approved grading plans or any other documents necessary to determine compliance with the permit, the permittee shall provide such information. 9.2 Endangered Species and Critical Habitat Although the Construction General Permit does not address the issue of endangered or threatened species or critical habitat, the owner/developer is not released from any responsibility or requirements under the Endangered Species Act, or any other environmental regulations. June 2014 Page 27 FEDEX GROUND FACILITY— STORM NATER MANAGEMENT PLAN 9.3 Upset a) Effect of an Upset: An upset constitutes an affirmative defense to an action brought for noncompliance with permit limitations and requirements if the requirements of paragraph b of this section are met. (No determination made during administrative review of claims that noncompliance was caused by upset, and before an action for noncompliance, is final administrative action subject to judicial review.) b) Conditions Necessary for a Demonstration of Upset: A permittee who wishes to establish the affirmative defense of upset shall demonstrate through properly signed contemporaneous operating logs, or other relevant evidence that: 1) An upset occurred and that the pennittee can identify the specific cause(s) of the upset; 2) The permitted facility was at the time being properly operated; 3) The permittee submitted notice of the upset as required in Part II.A.3. of this permit (24-hour notice); and 4) The permittee complied with any remedial measures required under 40 CFR Section 122.41(d) of the federal regulations or Section 61.8(3)(h) of the Colorado Discharge Permit System Regulations. c) Burden of Proof: In any enforcement proceeding the permittee seeking to establish the occurrence of an upset has the burden of proof 9.4 Bypass a) A bypass, which causes effluent limitations (i.e., requirements to implement BMPs in accordance with Parts I.B.3 and 1.D.2 of the permit) to be exceeded is prohibited, and the Division may take enforcement action against a permittee for such a bypass, unless: 1) Bypass was unavoidable to prevent loss of life, personal injury, or severe property damage; 2) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities (e.g., alternative BMPs), retention of untreated wastes, or maintenance during normal periods of equipment downtime. This condition is not satisfied if the permittee could have installed adequate backup equipment (e.g., implemented additional BMPs) to prevent a bypass which occurred during normal periods of equipment downtime or preventative maintenance; and 3) The permittee submitted notices as required in "Non -Compliance Notification," Part II.A.3. RICK ENGINEERING COMrANY June 2014 Page 28 FEDEX GROUND FACILITY— STORM WATER MANAGEMENT PLAN 10.0 REOPENER CLAUSE The Colorado Department of Public Health and. Environment may elect to modify the permit prior to its expiration (rather than waiting for the new permit cycle) to comply with any new statutory or regulatory requirements, such as for effluent limitation guidelines, which may be promulgated in the course of the current permit cycle. 11.0 TERMINATION OF COVERAGE The operator must file a Notice of Termination (NOT) with CDPHE within 30 days of when one or more of the following conditions have been met. a. The operator has established final stabilization on all portions of the site for which the operator is responsible. b. Another operator who has a valid authorization number under this general permit or an individual NPDS permit has assumed control over all areas of the site that have not been finally stabilized; c. For residential construction only, temporary stabilization has been completed and the residence has been transferred to the homeowner (or a homeowner's association). d. The planned construction activity identified on the original Discharge Application was never initiated (i.e., no grading or earthwork was ever started) and plans for construction have been permanently abandoned or indefinitely postponed; e. The operator has obtained coverage for the site under another NPDS permit; f. The permittee no longer meets the definition of an operator in Part 2.1, provided that the operator meets all of the following requirements: i. Informs CDPHE of the estimated date of the anticipated loss of control as soon as the operator becomes aware of it and identifies the person that will take control; ii. Identifies the reasons for being unable to submit an NOT; iii. Submits a copy of the SWMP with the notice of termination; iv. Has informed the new operator of the requirements of this permit; and v. Notifies the MS4 of the anticipated change in control and identifies the person that will take control, if the construction site has the potential to discharge to a regulated MS4. The operator shall give notice to the MS4 at the same time notice is given CDPHE. The NOT must be signed in accordance with Section F.1 of the General Permit. Appendix I for this report includes a sample NOT form. Upon receipt of the NOT acknowledgement letter, distribute copies to Garfield County. RICK ENGINE LUNG COMPANY r.n June 2014 Page 29 FEDEJX GROUND FACILITY --STORM WATER MANAGEMENT PLAN 12.0 CERTIFICATION "1 certify under penalty of law that a complete Stormwater Management Plan, 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 Stonnwater 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." Jim Light CLH Properties, LLC PO Box 620 Basalt, Colorado 81621 (970) 379-6810 Date "1 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." Jim Light CLH Properties, LLC PO Box 620 Basalt, Colorado 81621 (970) 379-6810 This certification applies to FedEx Ground Facility Date RICK EN{.e1Nu RINo COMPANY June 2014 Page 30 FEDEX GROUND FACILITY—STORM WATER MANAGEMENT PLAN 13.0 DESCRIPTION AND INSTRUCTIONS FOR FORMS Appendix A A copy of the completed Discharge Application, CDPHE Discharge Authorization Certificate, and list of Discharge Application and Authorization Certificate recipients is included in this Appendix. Appendix E Upon receipt of this SWMP the naives, addresses and telephone numbers of all project contractors and subcontractors must be provided. This list must be amended and/or revised as necessary throughout the construction period, All required certifications must be attached to this SWMP. The name, title, address, and phone number of the contracting/sub-contracting firms are to be included. Make additional copies as necessary. Appendix C The Stormwater Team must be identified in this appendix. All relevant information, including the name, title, qualifications, and a description of each members responsibilities as it relates to the implementation and maintenance of the SWMP and site BMP's must be provided. Appendix D Appendix E Appendix F Appendix G This schedule should be revised as necessary throughout construction. If the construction period is extended beyond the date noted on the Nal, the "operator" as indicated thereon shall re - notify CDPHE and the local agency, in compliance with the Permit. All amendments to the SWMP shall be recorded on this form. Amendments may be required when activities change which affect BMP's and pollutant discharges. Upon receipt of this SWMP, the name(s) and telephone number(s) of the appropriate field personnel should be provided on this form. This form should be amended and/or revised as necessary throughout the construction period. Inspection dates and all observations made during inspections should be recorded on these forms. Suggested maintenance measures are included. Use the checklists and guidelines to document each inspection. Appendix H A copy of the General Permit COR -030000 is included. Appendix 1 A Notice of Termination (NOT) is included. It is to be completed as described in Section 11 . RICK ENGINEERING COM rANY 711 June 2014 Page 31 FEDEX GROUND FACILITY— STORM WATER MANAGEMENT PLAN Appendix .l Appendix K Non Numeric Effluent Limitation Guideline - Best Management Practices. Provides details and design information on the installation and maintenance of silt fence, straw bales, and sand bag berms, among other practices. Retention/Detention Basin and/or Sediment Basin Calculations Calculations for all onsite basins, permanent or temporary, used for the retention/detention of stormwater based on this report or Local Ordinances and calculations for any separate sediment basins to be used on this site as part of stormwater control. F:14I43 FEDEX GLENWOODIADMINb4143 CORSWMP 13.DOCX RICK ENGINEERING COMPANY the June 2014 Page 32 APPENDIX A COPY OF DISCHARGE APPLICATION, AUTHORIZATION CERTIFICATE, AND LIST OF RECIPIENTS LIST OF DISCHARGE AUTHORIZATION CERTIFICATE RECIPIENTS FEDEX GROUND FACILITY Transmitted By: Recipient: Garfield County Date Transmitted: Transmitted By: Recipient: LOCAL AGENCY AND DEPARTMENT Date Transmitted: Transmitted By: Recipient: LOCAL AGENCY AND DEPARTMENT Date Transmitted: Transmitted By: Recipient: LOCAL AGENCY AND DEPARTMENT Date Transmitted: Transmitted By: Recipient: LOCAL AGENCY AND DEPARTMENT Date Transmitted: Transmitted By: Recipient: LOCAL AGENCY AND DEPARTMENT Date l'ransmitted: Transmitted By: Recipient: LOCAL AGENCY AND DEPARTMENT Date Transmitted: APPENDIX B LIST OF CONTRACTORS AND SUBCONTRACTORS CONTRACTOR/SUBCONTRACTOR CERTIFICATIONS LIST OF CONTRACTORS AND SUBCONTRACTORS FEDEX GROUND FACILITY Grading Contractor: Address: City: State: Telephone: Fax: Contact: Date Started: Date Completed Underground Contractor: Address: City: State: 'Telephone: - Fax: Contact: Date Started: Date Completed Dry Utility Contractor: Address: City: State: Telephone: Fax: Contact: Date Started: Date Completed Paving Contractor: Address: City: State: Telephone: Fax: Contact: Date Started: Date Completed LIST OF CONTRACTORS AND SUBCONTRACTORS FEDEX GROUND FACILITY Building Contractor: Address: City: _ State: Telephone: Fax: Contact: Date Started: Date Completed Landscape Contractor: Address: City: State: Telephone: Fax: Contact: Date Started: Date Completed Concrete Contractor: Address: City: _ State: Telephone: Fax: Contact: Date Started: Date Completed Steel Contractor: Address: City: State: Telephone: _ Fax: Contact: Date Started: Date Completed LIST OF CONTRACTORS AND SUBCONTRACTORS FEDEX GROUND FACILITY Stucco Contractor: Address: City: State: Telephone: Fax: Contact: Date Started: Date Completed Painting Contractor: Address: City: State: Telephone: Fax: Contact: Date Started: Date Completed Other Contractor: Address: City: State: Telephone: Fax: Contact: Date Started: Date Completed Other Contractor: Address: City: State: Telephone: Fax: Contact: Date Started: Date Completed CONTRACTOR/SUBCONTRACTOR CERTIFICATION "I certify under penalty of law that a complete Stormwater Management Plan, 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." Name: Date Title: Firm Name: Address: Phone: Construction Activity Responsible For: CONTRACTOR/SUBCONTRACTOR CERTIFICATION "I certify under penalty of law that a complete Stormwater Management Plan, 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. 1 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." Name: Date Title: Firm Name: Address: Phone: Construction Activity Responsible For: CONTRACTOR/SUBCONTRACTOR CERTIFICATION "1 certify under penalty of law that a complete Stormwater Management Plan, 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." Name: Date Title: Firm Name: Address: Phone: Construction Activity Responsible For: CONTRACTOR/SUBCONTRACTOR CERTIFICATION "I certify under penalty of law that a complete Stormwater Management Pian, 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." Name: Date Title: Firm Name: Address: Phone: Construction Activity Responsible For: CONTRACTOR/SUBCONTRACTOR CERTIFICATION "I certify under penalty of law that a complete Stormwater Management Plan, has been prepared for my activity. Based an 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." Name: Date Title: Firm Name: Address: Phone: Construction Activity Responsible For: CONTRACTOR/SUBCONTRACTOR CERTIFICATION "I certify under penalty of law that a complete Stormwater Management Plan, 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. 1 ant aware that there are significant penalties for falsely certifying the completion of said SWMP, including the possibility of fine and imprisonment for knowing violations." Name: Date Title: Firm Name: Address: Phone: Construction Activity Responsible For: APPENDIX C STORMWATER TEAM/INSPECTOR INFORMATION LIST OF STORMWATER TEAM MEMBERS FEDEX GROUND FACILITY Owner/Developer Contact; Company: Address: City: State: Telephone: Fax: Responsibilities: General Contractor Contact: Company: Address: City: State: Telephone: Fax: Responsibilities: Stormwater Inspector: Company: Address: City: State: Telephone: Fax: Responsibilities: OUALIFICATIONS: (provide brief description of the team members qualifications or attach the Inspector Qualifications and other qualifications as necessary) APPENDIX D PROPOSED CONSTRUCTION SCHEDULE (OWNER OR GENERAL CONTRACTOR TO INSERT CONSTRUCTION SCHEDULE) INCLUDE: 1.) DATES OF MAJOR GRADING ACTIVITIES, 2.) DATES WHEN CONSTRUCTION ACTIVITIES TEMPORARILY OR PERMANENTLY CEASED. 3.) DATE AND LOCATION WHEN A STABILIZATION OR CONTROL MEASURE IS INITIATED - INDICATE TYPE OF MEASURE. 4.) DATE AND LOCATION WHEN A STABILIZATION OR CONTROL MEASURE IS TERMINATED - INDICATE TYPE OF MEASURE, APPENDIX E AMENDMENTS TO SWMP AMENDMENTS Any amendments made to this SWMP should be documented on this form. APPENDIX F FIELD MAINTENANCE CONTACT PERSON(S) FIELD MAINTENANCE CONTACT PERSONS) Contact Person & Position Phone Number Alternate Phone Number Alternate Contact Person Phone Number APPENDIX G INSPECTION GUIDELINES AND INSPECTION/MAINTENANCE RECORDS INSPECTION GUIDELINES PROTECTIVE DEVICES INSPECT FOR: MAINTENANCE MEASURES Vegetation • Rills or gullies forming • Inspect for adequate stand of vegetation, reseed. • Bare soil patches • Reseed bare areas. • Sediment at toe of slope • Identify sediment source, control at source. Dikes • Gully on slope below dike breach; low spot in dike • Fill gully or low spot, re -compact, • Loose soil • Remove and re -compact. • Erosion of dike face • Install adequate protection. Silt fence, straw bales, etc. • Undercutting of fence or bale • Fill undercut and re -compact. • Fence collapsing • Replace section. • Torn fabric • Replace section. • Runoff draining around barrier • Extend fence and/or regrade to prevent. • Sediment level 1/3 height to top of fence or height to top of bale • Remove sediment, dispose of properly. Inlet protection • Flooding around or below inlet • Check grading//construction, check for clogging, restore for positive drainage into inlet. • Undercutting of bales or silt fence, bale displacement, torn fabric, etc. • - Fill undercut and re -compact. Outlet protection • Dislodged stones • Restore erosion protection per plan. • Erosion below outlet • Check construction. Repair accordingly. • Outlet scour • Check construction. Repair accordingly. INSPECTION GUIDELINES (Continued) PROTECTIVE DEVICES INSPECT FOR: MAINTENANCE MEASURES Sediment traps and basins • Sediment level near outlet elevation • Remove sediment, dispose of properly. • Obstructed outlet • Remove obstruction. • Basin not dewatering between storms • Check construction, clean openings in outlet. • Damaged embankments • Repair damaged embankments. • Spillway erosion • Check construction. Repair accordingly. • Outlet erosion • Check construction. Repair accordingly. • Riser flotation • Check anchor block construction. Restore accordingly. Check riser couplings. • Excessive discharge to and from basin or trap • • Check construction. Restore accordingly. Check construction. Restore accordingly. • Sediment storage zone fills too quickly MAINTENANCE RECORD INSPECTION DATE ` DATE OF STORM INSPECTOR LOCATION: TYPE OF FACILITY INSPECTED OBSERVATIONS / COMMENTS MAINTENANCE ACTION TAKEN DATE OF MAINTENANCE RECORDS OF STABILIZATION List below the start and finish dates for all major grading activities, including when activities are temporarily or permanently ceased for any portion of the project and when temporary or final stabilization is initiated and achieved. APPENDIX H COLORADO DISCHARGE PERMIT SYSTEM GENERAL PERMIT FOR DISCHARGES FROM CONSTRUCTION ACTIVITIES TO WATERS OF THE UNITED STATES PERMIT NO. COR -030000 Page 2 of 22 Permit No. COR -030000 CDPS GENERAL PERMIT STORMWATER DISCHARGES ASSOCIATED WITH CONSTRUCTION ACTIVITY AUTHORIZATION TO DISCHARGE UNDER THE COLORADO DISCHARGE PERMIT SYSTEM In compliance with the provisions of the Colorado Water Quality Control Act, (25-8-101 et seq., CRS, 1973 as amended) and the Federal Water Pollution Control Act, as amended (33 U.S.C. 1251 et seq.; the "Act"), this permit authorizes the discharge of storrnwater associated with construction activities (and specific allowable non-stormwater discharges in accordance with Part 1.D.3 of the permit) certified under this permit, from those locations specified throughout the State of Colorado to specified waters of the State. Such discharges shall be in accordance with the conditions of this permit. This permit specifically authorizes the facility listed on page 1 of this permit to discharge, as of this date, in accordance with permit requirements and conditions set forth in Parts I and Il hereof. All discharges authorized herein shall be consistent with the terms and conditions of this permit. This permit and the authorization to discharge shall expire at midnight, June 30, 2012. Issued and Signed this 315` day of May, 2007 COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT -4(°1'* Janet 5. Kieler Permits Section Manager Water Quality Control Division SIGNED AND ISSUED MAY 31, 2007 EFFECTIVE JULY 1, 2007 ADMINISTRATIVELY CONTINUED EFFECTIVE JULY 1, 2012 1 TABLE OF CONTENTS PART I A. COVERAGE UNDER T1 IIS PERMIT 3 1. Authority to Discharge 3 a) Applicable Sections 3 b) Oil and Gas Construction 3 2. Definitions 3 3. Permit Coverage Without Application — Qualifying Local Programs 3 a) Applicable Sections 3 b) Local Agency Authority 4 c) Permit Coverage Termination 4 d) Compliance with Qualifying Local Program 4 e) Full Permit Applicability 4 4. Application, Due Dates 4 a) Application Due Dates 4 b) Summary of Application ....•............. 4 5. Permit Certification Procedures 4 a) Request for Additional Information 4 b) Automatic Coverage 5 c) Individual Permit Required.... 5 d) General vs. Individual Permit Coverage 5 e) Local Agency Authority 5 6. Inactivation Notice 5 7. Transfer of Permit .......... 5 8. Reassignment of Permit. 5 9. Sale of Residence to Homeowners 6 10, Permit Expiration Date 6 11. Individual Permit Criteria 6 B. STORMWATER MANAGEMENT PLAN — GENERAL REQUIREMENTS ..................................... ............................ 6 C, STORMWATER MANAGEMENT PLAN—CONTENTS 7 1. Site Description 7 2, Site Map 7 3. Stormwater Management Controls 8 a) SWMP Administrator 8 b) Identification of Potential Pollutant Sources 8 c) Best Management Practices (BMPs) for Stormwater Pollution Prevention. 8 4. Final Stabilization and Long-term Stormwater Management 9 5. Inspection and Maintenance 10 D. TERMS AND CONDITIONS 10 1. General Limitations.— ......... .......... ............ ............. .............. ...... ....... ...... 10 2. BMP Implementation and Design Standards 10 3. Prohibition of Nan-Stormwater Discharges I 1 4. Releases in Excess of Reportable Quantities 11 5. SWMP Requirements 11 a) SWMP Preparation and Implementation 11 b) SWMP Retention Requirements .,,,,,,, 11 c) SWMP Review/Changes 11 d) Responsive SWMP Changes..., 12 6. Inspections 12 a) Minimum Inspection Schedule 12 b) Inspection Requirements 13 c) Required Actions Following Site Inspections 13 7. BMP Maintenance 13 8. Replacement and Failed BMPs 14 9, Reporting 14 -2a - TABLE OF CONTENTS (cont) I0. SWMP Availability 14 11. Total Maximum Daily Load (TMDL) 14 E. ADDITIONAL DEFINITIONS ,.. 15 GENERAL REQUIREMENTS 16 1. Signatory Requirements 16 2. Retention of Records 16 3. Monitoring 16 PART 11 A. MANAGEMENT REQUIREMENTS.......,... 17 1. Amending a Permit Certification............................,,.,,.........,....,.,..,...........,17 2. Special Notifications - Definitions 17 3. Noncompliance Notification 17 4. Submission of Incorrect or incomplete Information 18 5. Bypass 18 6. Upsets 18 7. Removed Substances 18 8. Minimization of Adverse Impact 18 9. Reduction, Loss, or Failure of Stormwater Controls 19 10. Proper Operation and Maintenance 19 I3, RESPONSIBILITIES I9 1. Inspections and Right to Entry . 19 2. Duty to Provide Information .........,. 19 3. Transfer of Ownership or Control 19 4, Modification, Suspension, or Revocation of Permit By Division 20 5. Permit Violations 21 6. Legal Responsibilities..................>..............•..........,, 21 7. Severability 21 8. Renewal Application 21 9. Confidentiality 21 10, Fees 21 11. Requiring an Individual CDPS Permit 22 -2b- PART 1 A. COVERAGE UNDER THIS PERMIT Authority to Discharge PART 1 Permit - Page 3 Permit No. COR -030000 Under this permit, facilities are granted authorization to discharge stormwater associated with construction activities into waters of the state of Colorado. This permit also authorizes the discharge of specific allowable non-stormwater discharges, in accordance with Part I.D.3 of the permit, which includes discharges to the ground. This includes stormwater discharges from areas that are dedicated to producing earthen materials, such as soils, sand and gravel, for use at a single construction site (i,e., borrow or fill areas). This permit also authorizes stormwater discharges from dedicated asphalt batch plants and dedicated concrete batch plants. (Coverage under the construction site permit is not required for batch plants if they have alternate CDPS permit coverage.) This permit does not authorize the discharge of mine water or process water from such areas. a) Applicable Sections: In accordance with Part I.A.3 of this permit, some parts of this permit do not apply to sites covered under a Qualifying Local Program, as defined in LA,2.d. For sites not covered by a Qualifying Local Program, all parts of the permit apply except Part I.A.3. The permittee will be responsible for determining and then complying with the applicable sections. b) Oil and Gas Construction: Stormwater discharges associated with construction activities directly related to oil and gas exploration, production, processing, and treatment operations or transmission facilities are regulated under the Colorado Discharge Permit System Regulations (5CCR 1002-61), and require coverage under this permit in accordance with that regulation. However, references in this permit to specific authority under the Federal Clean Water Act (CWA) do not apply to stormwater discharges associated with these oil and gas related construction activities, to the extent that the references are limited by the federal Energy Policy Act of 2005. 2. Definitions a) Stormwater:. Stormwater is precipitation -induced surface runoff. b) Construction activity: Construction activity refers to ground surface disturbing activities, which include, but are not limited to, clearing, grading, excavation, demolition, installation of new or improved haul roads and access roads, staging areas, stockpiling of fill materials, and borrow areas. Construction does not include routine maintenance to maintain original line and grade, hydraulic capacity, or original purpose of the facility. c) Small construction activity: Stormwater discharge associated with small construction activity means the discharge of stormwater from construction activities that result in land disturbance of equal to or greater than one acre and Iess than five acres. Small construction activity also includes the disturbance of less than one acre of total land area that is part of a larger common plan of development or sale, if the larger common plan will ultimately disturb equal to or greater than one and less than five acres. d) Qualifying Local Program: This permit includes conditions that incorporate qualifying local erosion and sediment control program (Qualifying Local Program) requirements by reference. A Qualifying Local Program is a municipal stormwater program for stormwater discharges associated with small construction activity that has been formally approved by the Division, Other Definitions: Definitions of additional terms can be found in Pari I.E. of this permit. 3. Permit Coverage Without Application — for small construction activities wider a Qualifying Local Program only if a small construction site is within the jurisdiction of a Qualifying Local Program, the operator of the construction activity is authorized to discharge stormwater associated with small construction activity under this general permit without the submittal of an application to the Division. a) Applicable Sections; For sites covered by a Qualifying Local Program, only Parts 1 ,A.1, 1,A.2, 1.A,3, i.0,1, 1.0.2, I.D.3,1.D.4, I,D.7, 1.13.8, 1.D.1 I, I.E and Part II of this permit, with the exception of Parts II.A.I, 11,13,3, 11.13.8, and 11,1310, apply. PART 1 Permit - Page 4 Permit No. COR -030000 A. COVERAGE UNDER TI -IIS PERMIT (cont.) b) Local Agency Authority: This permit does not pre-empt or supersede the authority of local agencies to prohibit, restrict, or control discharges of stormwater to storm drain systems or other water courses within their jurisdiction. c) Permit Coverage Termination: When a site under a Qualifying Local Program has been finally stabilized, coverage under this permit is automatically terminated. d) Compliance with Qualifying Local Program: A construction site operator that has authorization to discharge under this permit under Part 1,A.3 shall comply with the requirements of the Qualifying Local Program with jurisdiction over the site, Full Permit Applicability: The Division may require any operator within the jurisdiction of a Qualifying Local Program covered under this permit to apply for and obtain coverage under the full requirements of this permit. The operator must be notified in writing that an application for full coverage is required. When a permit certification under this permit is issued to an operator that would otherwise be covered under Part I.A.3 of this permit, the full requirements of this permit replace the requirements as per Part 1.A.3 of this permit, upon the effective date of the permit certification. A site brought under the full requirements of this permit must still comply with local stormwater management requirements, policies or guidelines as required by Part 1.D.1 .g of this permit. Application, Due Dates a) Application Due Dates: At least ten calendar days prior to the commencement of construction activities, the applicant shall submit an application form as provided by the Division, with a certification that the Stormwater Management Plan (SWMP) is complete. One original completed discharge permit application shall be submitted, by mail or hand delivery, to: Colorado Department of Public Health and Environment Water Quality Control Division W QCD-Permits-132 4300 Cherry Creek Drive South Denver, Colorado 80246-1530 b) Summary of Application: The application requires, at a minimum, the following: 1) The applicant's company name; address; telephone number; and email address (if available); whether the applicant is the owner, developer, or contractor; and local contact information; 2) Project name, address, county and location of the construction site, including the latitude and longitude to the nearest 15 seconds of the approximate center of the construction activity; 3) Legal description or map of the construction site; 4) Estimates of: the total area of the site, the area of the site that is expected to be disturbed, and the total area of the larger common plan of development or sale to undergo disturbance; 5) The nature alike construction activity; 6) The anticipated start date and final stabilization date for the project; 7) The name of the receiving water(s), or the municipal separate storm sewer system and the ultimate (i.e., named) receiving water(s); 8) Certification that the SWMP for the construction site is complete (see Part I,C. below); and 9) The signature of the applicant, signed in accordance with Part I.F.I of this permit. 5. Permit Certification Procedures If this general permit is appropriate for the applicant's operation, then a certification will be developed and the applicant will be authorized to discharge stormwater under this general permit, a) Request for Additional Information; The Division shall have up to fen calendar days after receipt of the above information to request additional data and/or deny the authorization for any particular discharge. Upon receipt of additional information, the Division shall have an additional ten calendar days to issue or deny authorization for the particular discharge. (Notification of denial shall be by letter, in cases where coverage under an alternate general permit or an individual permit is required, instead of coverage under this permit.) PART 1 Permit - Page 5 Permit No. COR -030000 A. COVERAGE UNDER THIS PERMIT (cont.) b) Automatic Coverage: l f the applicant does not receive a request for additional information or a notification of denial from the Division dated within ten calendar days of receipt of the application by the Division, authorization to discharge in accordance with the conditions of this permit shall be deemed granted. c) Individual Permit Required: If, atter evaluation of the application (or additional information, such as the SWMP), it is found that this general permit is not appropriate for the operation, then the application will be processed as one for an individual permit. The applicant will be notified of the Division's decision to deny certification under this general permit. For an individual permit, additional information may be requested, and 180 days may be required to process the application and issue the permit. At the Division's discretion, temporary coverage under this general permit may be allowed until the individual permit goes into effect. d) General vs. Individual Permit Coverage: Any permittee authorized by this permit may request to be excluded from the coverage of this permit by applying for an individual CDPS permit. The permittee shall submit an individual application, with reasons supporting the request, to the Division at least 180 days prior to any discharge. e) Local Agency Authority: This permit does not pre-empt or supersede the authority of local agencies to prohibit, restrict, or control discharges of stormwater to storm drain systems or other water courses within their jurisdiction. G. inactivation Notice When a site has been finally stabilized in accordance with the SWMP, the permittee must submit an Inactivation Notice form that is signed in accordance with Part 1.F.1. ofthis permit. The Inactivation Notice form is available from the Division and includes: a) Permit certification number; b) The permittee's name, address, telephone number; e) Name, location, and county for the construction site for which the inactivation notice is being submitted; and d) Certification that the site has been finally stabilized, and a description of the final stabilization method(s). 7. Transfer of Permit When responsibility for stormwater discharges at a construction site changes from one entity to another, the permittee shall submit a completed Notice of Transfer and Acceptance of Terms form that is signed in accordance with Part l.F.1, of this permit. The Notice of Transfer form is available from the Division and includes: a) Permit certification number; b) Name, location, and county for the construction site for which the Notice of Transfer is being submitted; c) Identifying information for the new permittee; d) Identifying information for the current permittees and e) Effective date of transfer. If the new responsible party will not complete the transfer form, the permit may be inactivated upon written request to the Division and completion of the Inactivation Notice if the permittee has no legal responsibility, through ownership or contract, for the construction activities at the site. In this case, the new owner or operator would be required to obtain permit coverage separately. 8. Reassienment of Permit When a permittee no longer has control of a specific portion of a permitted site, and wishes to transfer coverage of that portion of the site to a second party, the permittee shall submit a completed Notice of Reassignment of Permit Coverage form that is signed in accordance with Part I.F.1, of this permit. The Notice of Reassignment of Permit Coverage form is available from the Division and includes: a) Current permit certification number; b) Identifying information and certification as required by Part I.A.4.b for the new permittee; c) Identifying information for the current permittee, revised site information and certification for reassignment; and d) Effective date of reassignment. PART! Permit - Page 6 Permit No, COR -030000 A. COVERAGE UNDER THIS PERMIT (cont.) If the new responsible party will not complete the reassignment form, the applicable portion of the permitted site may he removed from permit coverage upon written request to the Division if' the permittee has no legal responsibility, through ownership or contract, for the construction activities at the portion of the site. in this case, the new owner or operator would be required to obtain permit coverage separately. 9. Sale of Residence to Ilomeowners For residential construction only, when a residential lot has been conveyed to a homeowner and all criteria in paragraphs a through e, below, are mei, coverage under this permit is no longer required and the conveyed lot may be removed from coverage under the perinittee's certification. At such time, the permittee is no longer responsible for meeting the terms and conditions of this permit for the conveyed lot, including the requirement to transfer or reassign permit coverage. The permittee remains responsible for inactivation of the original certification. a) The lot has been sold to the homeowner(s) for private residential use; b) the lot is less than one acre of disturbed area; c) all construction activity conducted by the permittee on the lot is completed; d) a certificate of occupancy (or equivalent) has been awarded to the hoarse owner; and e) the SWMP has been amended to indicate the lot is no longer covered by permit. Lots not meeting all of the above criteria require continued permit coverage. However, this permit coverage may be transferred (Part 1.A.7, above) or reassigned (Part I,A.S, above) to a new owner or operator, 10. Permit Exniratlon Date Authorization to discharge under this general permit shall expire on .lune 30, 2012, The Division must evaluate and reissue this general permit at least once every five years and must recertify the permittee's authority to discharge under the general permit at such time. Therefore, a permittee desiring continued coverage under the general permit must reapply by March 31, 2012. The Division will initiate the renewal process; however, it is ultimately the permittee's responsibility to ensure that the renewal is submitted, The Division will determine if the permittee may continue to operate under the terms of the general permit. An individual permit may be required for any facility not reauthorized to discharge under the reissued general permit. I I. Individual Permit Criteria Various criteria can be used in evaluating whether or not an individual (or alternate general) permit is required instead of this general permit. This information may come from the application, SWMP, or additional information as requested by the Division, and includes, but is not limited to, the following: a) the quality of the receiving waters (Le., the presence of downstream drinking water intakes or a high quality fishery, or for preservation of high quality water); b) the size of the construction site; c) evidence of noncompliance under a previous permit for the operation; d) the use of chemicals within the stormwater system; or e) discharges of pollutants of concern to waters for which there is an established Total Maximum Daily Load (TMDL), In addition, an individual permit may be required when the Division has shown or has reason to suspect that the stormwater discharge may contribute to a violation of a water quality standard. f3. STORMWATER MANAGEMENT PLAN (SWMP) —GENERAL REQUIREMENTS 1. A SWMP shall be developed for each facility covered by this permit, The SWMP shall be prepared in accordance with good engineering, hydrologic and pollution control practices. (The SWMP need not be prepared by a registered engineer.) PART 1 Permit - Page 7 Permit No. COR -030000 B. STORMWATER MANAGEMENT PLAN (SWMP GENERAL REQUIREMENTS (cont,) 2, The SWMP shall: a) identify all potential sources of pollution which may reasonably be expected to affect the quality of stormwater discharges associated with construction activity from the facility; b) Describe the practices to be used to reduce the pollutants in stormwater discharges associated with construction activity at the facility; and ensure the practices are selected and described in accordance with good engineering practices, including the installation, implementation and maintenance requirements; and c) Be properly prepared, and updated in accordance with Part I.D.5.c, to ensure compliance with the terms and conditions of this permit, 3. Facilities must implement the provisions of the SWMP as written and updated, from commencement of construction activity until final stabilization is complete, as a condition of this permit. The Division reserves the right to review the SWMP, and to require the permittee to develop and implement additional measures to prevent and control pollution as needed. 4. The SWMP may reflect requirements for Spill Prevention Control and Countermeasure (SPCC) plans under section 31 1 of the CWA, or Best Management Practices (BMPs) Programs otherwise required by a separate CDPS permit, and may incorporate any part of such plans into the SWMP by reference, provided that the relevant sections of such plans are available as part of the SWMP consistent with Part I.D.5.b. 5. For any sites with permit coverage before June 30, 2007, the permittee's SMWP must meet the new SWMP requirements as summarized in Section IL1 of the rationale. Arty needed changes must be made by October 11, 2007. C. STORMWATER MANAGEMENT PLAN (SWMP) — CONTENTS The SWMP shall include the following items, at a minimum, I. Site Description, The SWMP shall Clearly describe the construction activity, to include: a) The nature of the construction activity at the site. b) The proposed sequence for major activities. c) Estimates of the total area of the site, and the area and location expected to be disturbed by clearing, excavation, grading, or other construction activities. d) A summary of any existing data used in the development of the site construction plans or SWMP that describe the soil or existing potential for soil erosion. e) A description of the existing vegetation at the site and an estimate of the percent vegetative ground cover. t) The location and description of all potential pollution sources, including ground surface disturbing activities (see Part I,A.2.b), vehicle fueling, storage of fertilizers or chemicals, etc. g) The location and description of any anticipated allowable sources of non-stormwater discharge at the site, e,g., uncontaminated springs, landscape irrigation return flow, construction dewatering, and concrete washout. h) The name of the receiving water(s) and the size, type and location of any outfall(s). lithe stormwater discharge is to a municipal separate storm sewer system, the name of that system, the location of the storm sewer discharge, and the ultimate receiving water(s). 2. Site Map. The SWMP shall include a legible site map(s), showing the entire site, identifying; a) construction site boundaries; b) all areas of ground surface disturbance; c) areas of cut and fill; d) areas used for storage of building materials, equipment, soil, or waste; e) locations of dedicated asphalt or concrete batch plants; f) locations of all structural BMPs; g) locations of non-structural l3MPs as applicable; and h) locations of springs, streams, wetlands and other surface waters. 3. Stormwater Management Controls. PART 1 Permit - Page 8 Permit No. COR -030000 C. STORMWATER MANAGEMENT PLAN (SWMP) — CONTENTS (cont.) The SWMP must include a description of all stormwater management controls that will be implemented as part of the construction activity to control pollutants in stormwater discharges. The appropriateness and priorities of stormwater management controls in the SWMP shall reflect the potential pollutant sources identified at the facility. The description of stormwater management controls shall address the following components, at a minimum: a) SWMP Administrator - The SWMP shall identify a specific individual(s), position or title who is responsible for developing, implementing, maintaining, and revising the SWMP. The activities and responsibilities of the administrator shall address all aspects of the facility's SWMP. b) identification of Potential Pollutant Sources - All potential pollutant sources, including materials and activities, at a site must be evaluated for the potential to contribute pollutants to stormwater discharges. The SWMP shall identify and describe those sources determined to have the potential to contribute pollutants to stormwater discharges, and the sources must be controlled through BMP selection and implementation, as required in paragraph (c), below. At a minimum, each of the following sources and activities shall be evaluated for the potential to contribute pollutants to stormwater discharges, and identified in the SWMP if found to have such potential: 1) all disturbed and stored soils; 2) vehicle tracking of sediments; 3) management of contaminated soils; 4) loading and unloading operations; 5) outdoor storage activities (building materials, fertilizers, chemicals, etc.); 6) vehicle and equipment maintenance and fueling; 7) significant dust or particulate generating processes; 8) routine maintenance activities involving fertilizers, pesticides, detergents, fuels, solvents, oils, etc.; 9) on-site waste management practices (waste piles, liquid wastes, dumpsters, etc.); 10) concrete truck/equipment washing, including the concrete truck chute and associated fixtures and equipment; 11) dedicated asphalt and concrete batch plants; 12) non -industrial waste sources such as worker trash and portable toilets; and 13) other areas or procedures where potential spills can occur. c) Best Management Practices (BMPs) for stormwater Pollution Prevention - The SWMP shall identify and describe appropriate BMPs, including, but not limited to, those required by paragraphs 1 through 8 below, that will be implemented at the facility to reduce the potential of the sources identified in Part 1,C,3.b to contribute pollutants to stormwater discharges. The SWMP shall clearly describe the installation and implementation specifications for each BMP identified in the SWMP to ensure proper implementation, operation and maintenance of the BMP. I) Structural Practices for Erosion and Sediment Control. The SWMP shall clearly describe and locate all structural practices implemented at the site to minimize erosion and sediment transport. Practices may include, but are not limited to; straw bales, wattles/sediment control logs, silt fences, earth dikes, drainage swales, sediment traps, subsurface drains, pipe slope drains, inlet protection, outlet protection, gabions, and temporary or permanent sediment basins. 2) Non -Structural Practices for Erosion and Sediment Control. The SWMP shall clearly describe and locate, as applicable, ail non-structural practices implemented at the site to minimize erosion and sediment transport, Description must include interim and permanent stabilization practices, and site-specific scheduling for implementation of the practices. The SWMP should include practices to ensure that existing vegetation is preserved where possible. Non-structural practices may include, but are not limited to: temporary vegetation, permanent vegetation, mulching, geotextiles, sod stabilization, slope roughening, vegetative buffer strips, protection of trees, and preservation of mature vegetation. PART 1 Permit - Page 9 Permit No, COR -030000 C. STORMWATER MANAGEMENT PLAN (SWMP) — CONTENTS (cont.) 3) Phased BMP Implementation, The SWMP shall clearly describe the relationship between the phases of construction, and the implementation and maintenance of both structural and non-structural stormwater management controls. The SWMP must identify the stormwater management controls to be implemented during the project phases, which can include, but are not limited to, clearing and grubbing; road construction; utility and infrastructure installation; vertical construction; final grading; and final stabilization. 4) Materials Handling and Spill Prevention. The SWMP shall clearly describe and locate all practices implemented at the site to minimize impacts from procedures or significant materials (see definitions at Part 1.E.) that could contribute pollutants to runoff. Such procedures or significant materials could include: exposed storage of building materials; paints and solvents; fertilizers or chemicals; waste material; and equipment maintenance or fueling procedures. Areas or procedures where potential spills can occur must have spill prevention and response procedures identified in the SWMP. 5) Dedicated Concrete or Asphalt Batch Plants. The SWMP shall clearly describe and locate all practices implemented at the site to control stormwater pollution from dedicated concrete batch plants or dedicated asphalt batch plants covered by this certification, 6) Vehicle Tracking Control. The SWMP shall clearly describe and locate all practices implemented at the site to control potential sediment discharges from vehicle tracking. Practices must be implemented for all areas of potential vehicle tracking, and can include: minimizing site access; street sweeping or scraping; tracking pads; graveled parking areas; requiring that vehicles stay on paved areas on-site; wash racks; contractor education; and/or sediment control BMPs, etc. Waste Management and Disposal. Including Concrete Washout 1) The SWMP shall clearly describe and locate the practices implemented at the site to control stormwater pollution from all construction site wastes (liquid and solid), including concrete washout activities. ii) The practices used for concrete washout must ensure that these activities do not result in the contribution of pollutants associated with the washing activity to stormwater runoff. iii) Part I.D.3.c of the permit authorizes the conditional discharge of concrete washout water to the ground. The SWMP shall clearly describe and locate the practices to be used that will ensure that no washout water from concrete washout activities is discharged from the site as surface runoff or to surface waters. 8) Groundwater and Stormwater Dewatering, 1) The SWMP shall clearly describe and locate the practices implemented at the site to control stormwater pollution from the dewatering ofgroundwater or stormwater from excavations, wells, etc. ii) Part I.D.3.d of the permit authorizes the conditional discharge of construction dewatering to the ground. For any construction dewatering of groundwater not authorized under a separate CDPS discharge permit, the SWMP shall clearly describe and locate the practices to be used that will ensure that no groundwater from construction dewatering is discharged from the site as surface runoff or to surface waters. 4. Final Stabilization and Dong -term Stormwater IY1anamement a) The SWMP shall clearly describe the practices used to achieve final stabilization of all disturbed areas at the site, and any planned practices to control pollutants in stormwater discharges that will occur after construction operations have been completed at the site. b) Final stabilization practices for obtaining a vegetative cover should include, as appropriate: seed mix selection and application methods; soil preparation and amendments; soil stabilization practices (e.g., crimped straw, hydro mulch or rolled erosion control products); and appropriate sediment control BMPs as needed until final stabilization is achieved; etc. PART 1 Permit - Page 10 Permit No. COR -030000 C. STORMWATER MANAGEMENT PLAN (SWMP) —CONTENTS (cont.) c) Final stabilization is reached when all ground surface disturbing activities at the site have been completed, and uniform vegetative cover has been established with an individual plant density of at least 70 percent of pre - disturbance levels, or equivalent permanent, physical erosion reduction methods have been employed. The Division may, after consultation with the permittee and upon good cause, amend the final stabilization criteria in this section for specific operations. 5. Inspection and Maintenance Part 1.D.6 of the permit includes requirements for site inspections. Part 1.D,7 of the permit includes requirements for RMP maintenance. The SWMP shall clearly describe the inspection and maintenance procedures implemented at the site to maintain all erosion and sediment control practices and other protective practices identified in the SWMP, in good and effective operating condition. D. TERMS AND CONDITIONS 1. General Limitations The following limitations shall apply to all discharges covered by this permit; a) Stormwater discharges from construction activities shall not cause, have the reasonable potential to cause, or measurably contribute to an exceedance of any water quality standard, including narrative standards for water quality, b) Concrete washout water shall not be discharged to stale surface waters or to storm sewer systems. On-site permanent disposal of concrete washout waste is not authorized by this permit. Discharge to the ground of concrete washout waste that will subsequently be disposed of off-site is authorized by this permit. See Part I.D,3.c of the permit. c) Bulk storage structures far petroleum products and any other chemicals shall have secondary containment or equivalent adequate protection so as to contain all spills and prevent any spilled material from entering State waters. No chemicals are to be added to the discharge unless permission for the use of a specific chemical is granted by the Division. In granting the use of such chemicals, special conditions and monitoring may be addressed by separate correspondence. The Division reserves the right to require sampling and testing, on a case-by-case basis, in the event that there is reason to suspect that compliance with the SWMP is a problem, or to measure the effectiveness of the BMPs in removing pollutants in the effluent. Such monitoring may include Whole Effluent Toxicity testing. fj All site wastes must be properly managed to prevent potential pollution of State waters. This permit docs not authorize on-site waste disposal, g) All dischargers must comply with the lawful requirements of federal agencies, municipalities, counties, drainage districts and other local agencies regarding any discharges of stormwater to storm drain systems or other water courses under their jurisdiction, including applicable requirements in municipal stormwater management programs developed to comply with CDPS permits. Dischargers must comply with local stormwater management requirements, policies or guidelines including erosion and sediment control. 2. BMP Implementation and Design Standards Facilities must select, install, implement, and maintain appropriate BMPs, following good engineering, hydrologic and pollution control practices. i3MPs implemented at the site must be adequately designed to provide control for all potential pollutant sources associated with construction activity to prevent pollution or degradation of State waters. PART 1 Permit - Page I 1 Permit No. COR -030000 D. TERMS AND CONDITIONS (cont.) 3. Prohibition of r' on-Stormwater Discharges a) Except as provided in paragraphs b, c, and d below, all discharges covered by this permit shall be composed entirely of stormwater associated with construction activity. Discharges of material other than stormwater must be addressed in a separate CDPS permit issued for that discharge. b) Discharges from the fallowing sources that are combined with stormwater discharges associated with construction activity may be authorized by this permit, provided that the non-stormwater component of the discharge is identified in the SWMP (see Part I.C. I .g of this permit); - emergency fire fighting activities - landscape irrigation return flow - uncontaminated springs Discharges to the ground of concrete washout water from washing of tools and concrete mixer chutes may be authorized by this permit, provided that; 1) the source is identified in the SWMP; 2) BMPs are included in the SWMP in accordance with Part 1.C.3(c)(7) and to prevent pollution of groundwater in violation of Part l.D.l .a; and 3) these discharges do not leave the site as surface runoff or to surface waters d) Discharges to the ground of water from construction dewatering activities may be authorized by this permit, provided that: 1) the source is groundwater andfor groundwater combined with stormwater that does not contain pollutants in concentrations exceeding the State groundwater standards in Regulations 5 CCR 1002-41 and 42; 2) the source is identified in the SWMP; 3) BMPs are included in the SWMP, as required by Part I,C.3(c)(8); and 4) these discharges do not leave the site as surface runoff or to surface waters, Discharges to the ground from construction dewatering activities that do not meet the above criteria must be covered under a separate CDPS discharge permit. Contaminated groundwater requiring coverage under a separate CDPS discharge permit may include groundwater contaminated with pollutants from a landfill, mining activity, industrial pollutant plume, underground storage tank, or other source. 4. Releases in Excess of Reportable Quantities This permit does not relieve the permittee of the reporting requirements of 40 CFR 110, 40 CFR 117 or 40 CFR 302. Any discharge of hazardous material must be handled in accordance with the Division's Noncompliance Notification Requirements (see Part 11.A.3 of the permit). 5. SWMP Renuirements a) SWMP Preparation and Implementation: The SWMP shall be prepared prior to applying for coverage under the general permit, and certification of its completion submitted with the application. The SWMP shall be implemented prior to commencement of construction activities. The plan shall be updated as appropriate (see paragraph c, below), below). SWMP provisions shall be implemented until expiration or inactivation of permit coverage. b) SWMP Retention Requirements; A copy of the SWMP must be retained on site unless another location, specified by the permittee, is approved by the Division. c) SWMP Review/Changes: The permittee shall amend the SWMP; 1) when there is a change in design, construction, operation, or maintenance of the site, which would require the implementation of new or revised 13MPs; or 2) if the SWMP proves to be ineffective in achieving the general objectives of controlling pollutants in stormwater discharges associated with construction activity; or PART 1 Permit - Page 12 Permit No, COR -030000 D. TERMS AND CONDITIONS (cont.) 3) when BMPs are no longer necessary and arc removed. SWMP changes shall be made prior to changes in the site conditions, except as allowed for in paragraph d, below. SWMP revisions may include, but are not limited to: potential pollutant source identification, selection of appropriate BMPs for site conditions; BMP maintenance procedures; and interum and final stabilization practices. The SWMP changes may include a schedule for further BMP design and implementation, provided that, if any interim BMPs are needed to comply with the permit, they are also included in the SWMP and implemented during the interim period. d) Responsive SWMP Changes: SWMP changes addressing I3MP installation and/or implementation are often required to be made in response to changing conditions, or when current BMPs are determined ineffective, The majority of SWMP revisions to address these changes can be made immediately with quick in -the -field revisions to the SWMP, In the less common scenario where more complex development ot'materials to modify the SWMP is necessary, SWMP revisions shall be made in accordance with the following requirements:: 1) the SWMP shall be revised as soon as practicable, but in no case more than 72 hours after the change(s) in BMP installation and/or implementation occur at the site, and 2) a notation must be included in the SWMP prior to the site change(s) that includes the time and date of the change(s) in the field, an identification of the BMP(s) removed or added, and the location(s) of those BMP(s). 6. Insnections Site inspections must be conducted in accordance with the following requirements and minimum schedules. The required minimum inspection schedules do not reduce or eliminate the permittee's responsibility to implement and maintain BMPs in good and effective operational condition, and in accordance with the SWMP, which could require more frequent inspections. Minimum 'Inspection Schedule: The permittee shall, at a minimum, make a thorough inspection, in accordance with the requirements in 1.D.6.b below, at least once every 14 calendar days. Also, post -storm event inspections must be conducted within 24 hours after the end of any precipitation or snowmen event that causes surface erosion, Provided the timing is appropriate, the post -storm inspections may be used to fulfill the 14 -day routine inspection requirement. A more frequent inspection schedule than the minimum inspections described may be necessaiv, to ensure that BMPs continue to operate as needed to comply with the permit. The following conditional modifications to this Minimum inspection Schedule are allowed: 1) Post -Storm Event Inspections at Temporarily Idle Sites — If no construction activities will occur following a storm event, post -storm event inspections shall be conducted prior to re -commencing construction activities, but no later than 72 hours following the storm event. The occurrence of any such delayed inspection must be documented in the inspection record. Routine inspections still must be conducted at least every 14 calendar days. 2) Inspections at Completed Sites/Areas — For sites or portions of sites that meet the fallowing criteria, but final stabilization has not been achieved due to a vegetative cover that has not become established, the permittee shall make a thorough inspection of their stormwater management system at least once every month, and post - storm event inspections are not required. This reduced inspection schedule is only allowed if: i) all construction activities that will result in surface ground disturbance are completed: ii) all activities required for final stabilization, in accordance with the SWMP, have been completed, with the exception of the application of seed that has not occurred due to seasonal conditions or the necessity for additional seed application to augment previous efforts; and iii) the SWMP has been amended to indicate those areas that will be inspected in accordance with the reduced schedule allowed for in this paragraph. PART I Pernik - Page 13 Permit No. COR -030000 TERMS AND CONDITIONS (cont) 3) Winter Conditions Inspections Exclusion — Inspections are not required at sites where construction activities are temporarily halted, snow cover exists over the entire site for an extended period, and melting conditions posing a risk of surface erosion do not exist. This exception is applicable only during the period where melting conditions do not exist. and applies to the routine 14 -day and monthly inspections, as well as the post -storm - event inspections. The following information must be documented in the inspection record for use of this exclusion: dates when snow cover occurred, date when construction activities ceased. and date melting conditions began, Inspections, as described above, are required at alt other limes. When site conditions make the schedule required in this section unpractical, the permittee may petition the Division to grant an alternate inspection schedule. b) Inspection Requirements 1) Inspection Scope - The construction site perimeter, all disturbed areas. material and/or waste storage areas that are exposed to precipitation, discharge locations, and locations where vehicles access the site shall be inspected for evidence of, or the potential for, pollutants leaving the construction site boundaries, entering the stormwater drainage system, or discharging to state waters. All erosion and sediment control practices identified in the SWMP shall be evaluated to ensure that they are maintained and operating correctly. 2) Inspection Report/Records - The permittee shall keep a record of inspections. Inspection reports must identify any incidents of non-compliance with the terms and conditions of this permit. Inspection records must be retained for three years from expiration or inactivation of permit coverage. At a minimumthe inspection report must include: i) The inspection date: ii) Name(s) and title(s) of personnel making the inspection; iii) Location(s) of discharges of sediment or other pollutants from the site; iv) Location(s) of BMPs that need to be maintained; v) Location(s) of BMPs that failed to operate as designed or proved inadequate for a particular location; vi) Location(s) where additional BMPs are needed that were not in place at the time of inspection; vii) Deviations from the minimum inspection schedule as provided in Part 1.D.6.a above; vii) Description of corrective action for items iii, iv, v, and vi, above, dates corrective action(s) taken, and measures taken to prevent future violations, including requisite changes to the SWMP, as necessary; and viii) Atter adequate corrective action(s) has been taken, or where a report does not identify any incidents requiring corrective action, the report shall contain a signed statement indicating the site is in compliance with the permit to the best of the signer's knowledge and belief. Required Actions Following Site Inspections — Where site inspections note the need for BMP maintenance activities, BMPs must be maintained in accordance with the SWMP and Part I.D,7 of the permit. Repair, replacement, or installation of new BMPs determined necessary during site inspections to address ineffective or inadequate BMPs must be conducted in accordance with Part I.D.8 of the permit. SWMP updates required as a result of deficiencies in the SWMP noted during site inspections shall be made in accordance with Part I.D.5,c of the permit, 7. BMP Maintenance All erosion and sediment control practices and other protective measures identified in the SWMP must be maintained in effective operating condition. Proper selection and installation of 13MPs and implementation of comprehensive Inspection and Maintenance procedures, in accordance with the SWMP, should be adequate to meet this condition. BMPs that are not adequately maintained in accordance with good engineering, hydrologic and pollution control practices, including removal of collected sediment outside the acceptable tolerances of the BMPs, are considered to be no longer operating effectively and must be addressed in accordance with Part 1.D.8, below. A specific timeline for implementing maintenance procedures is not included in this permit because BMP maintenance is expected to be proactive, not responsive. Observations resulting in BMP maintenance activities can be made during a site inspection, or during general observations of site conditions. PART I Permit - Page 14 Permit No, COR -030000 D, TERMS AND CONDITIONS (cont.) 8. Replacement and Failed BMPs Adequate site assessment must be performed as part of comprehensive Inspection and Maintenance procedures, to assess the adequacy of BMPs at the site, and the necessity of changes to those BMPs to ensure continued effective performance. Where site assessment resu}ts in the determination that new or replacement BMPs are necessary, the BMPs must be installed to ensure on-going implementation of BMPs as per Part I,D.2. Where BMPs have failed, resulting in noncompliance with Part I.D.2, they must be addressed as soon as possible, immediately in most cases, to minimize the discharge of pollutants. When new BMPs are installed or BMPs are replaced, the SWMP must be updated in accordance with Part I.D.Stc), 9. Reporting No scheduled reporting requirements are included in this permit; however, the Division reserves the right to request that a copy of the inspection reports be submitted. 10. SWMP Availability A copy of the SWMP shall be provided upon request to the Division, EPA, or any local agency in charge of approving sediment and erosion plans, grading plans or stormwater management plans, and within the time frame specified in the request. If the SWMP is required to be submitted to any of these entities, it must include a signed certification in accordance with Part I.F.I of the permit, certifying that the SWMP is complete and meets all permit requirements. All SWMPs required under this permit are considered reports that shall be available to the public under Section 308(h) of the CWA and Section 61.5(4) of the Colorado Discharge Permit System Regulations. The permittee shall make plans available to members of the public upon request. However, the perrnittec may claim any portion of a SWMP as confidential in accordance with 40 CFR Part 2. 11. Total Maximum Daily Load (TMDL) if a TMDL has been approved for any waterbody into which the permittee discharges, and stormwater discharges associated with construction activity have been assigned a pollutant -specific Wasteload Allocation (WLA) under the TMDL, the Division will either: Ensure that the WLA is being implemented properly through alternative local requirements, such as by a municipal stormwater permit; or b) Notify the permittee of the WLA, and amend the permittee's certification to add specific BMPs and/or other requirements, as appropriate. The permittee may be required to do the following: 1) Under the permittee's SWMP, implement specific management practices based on requirements of the WLA, and evaluate whether the requirements are being met through implementation of existing stormwater BMPs or if additional BMPs are necessary. Document the calculations or other evidence that show that the requirements are expected to be met; and 2) If the evaluation shows that additional or modified BMPs are necessary, describe the type and schedule for the BMP additions/revisions, Discharge monitoring may also be required. The permittee may maintain coverage under the general permit provided they comply with the applicable requirements outlined above. The Division reserves the right to require individual or alternate general permit coverage, PART I Permit - Page 15 Permit No. COR -030000 E. ADDITIONAL DEFINITIONS Por the purposes of this permit: Best Management Practices (BIVIPs): schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to prevent or reduce the pollution of waters of the State. BMPs also include treatment requirements, operating procedures, pollution prevention, and practices to control site runoff, spillage or leaks, waste disposal, or drainage from material storage. Dedicated asphalt plants and concrete plants: portable asphalt plants and concrete plants that are located on or adjacent to a construction site and that provide materials only to that specific construction site. 3. Final stabilization: when all ground surface disturbing activities at the site have been completed, and uniform vegetative cover has been established with an individual plant density of at least 70 percent of pre -disturbance levels, or equivalent permanent, physical erosion reduction methods have been employed. For purposes of this permit, establishment of a vegetative cover capable of providing erosion control equivalent to pre-existing conditions at the site will be considered final stabilization, 4. Municipal separate storm sewer system: a conveyance or system of conveyances (including: roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains), owned or operated by a State, city, town, county, district, or other public body (created by state taw), having jurisdiction over disposal of sewage, industrial waste, stormwater, or other wastes; designed or used for collecting or conveying stormwater, 5. Operator: the entity that has day-to-day supervision and control of activities occurring at the construction site. This can be the owner, the developer, the general contractor or the agent of one of these parties, in some circumstances. It is anticipated that at different phases of a construction project, different types of parties may satisfy the definition of 'operator' and that the permit may be transferred as the roles change. 6. Outfail: a point source at the point where stormwater leaves the construction site and discharges to a receiving wafer or a stormwater collection system. 7. Part of a larger common plan of development or sale: a contiguous area where multiple separate and distinct construction activities may be taking place at different times on different schedules. Point source: any discernible, confined and discrete conveyance from which pollutants are or may be discharged. Point source discharges of stormwater result from structures which increase the imperviousness of the ground which acts to collect runoff, with runoff being conveyed along the resulting drainage or grading pattern. 9. Pollutant: dredged spoil, dirt, slurry, solid waste, incinerator residue, sewage, sewage sludge, garbage, trash, chemical waste, biological nutrient, biological material, radioactive material, heat, wrecked or discarded equipment, rock, sand, or any industrial, municipal or agricultural waste. 10. Process water: any water which, during manufacturing or processing, comes into contact with or results from the production of any raw material, intermediate product, finished product, by product or waste product. This definition includes mine drainage. 11. Receiving Water: any classified stream segment (including tributaries) in the State of Colorado into which stormwater related to construction activities discharges, This definition includes all water courses, even if they are usually dry, such as borrow ditches, arroyos, and other unnamed waterways. 12. Significant Materials include, but are not limited to: raw materials; fuels; materials such as solvents, detergents, and plastic pellets; finished materials such as metallic products; raw materials used in food processing or production; hazardous substances designated under section 101 (14) of CERCLA; any chemical the facility is required to report pursuant to section 313 of title 11l of SARA; fertilizers; pesticides; and waste products such as ashes, slag and sludge that have the potential to be released with stormwater discharge. 13. Stormwater: precipitation -induced surface runoff. PART 1 Permit - Page 16 Permit No. CUR -030000 GENERAL REQUIREMENTS Signatory Requirements a) All reports required for submittal shall be signed and certified for accuracy by the permittee in accordance with the following criteria: 1) 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 form originates; 2) In the case ofa partnership, by a general partner, 3) In the case ofa sole proprietorship, by the proprietor; 4) In the case ofa 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. b) Changes to authorization. if an authorization under paragraph a) of this section is no longer accurate because a different individual or position has responsibility for the overall operation of the facility, a new authorization satisfying the requirements of paragraph a) of this section must be submitted to the Division, prior to or together with any reports, information, or applications to be signed by an authorized representative. c) Certification, Any person signing a document under paragraph a) of this section shall make the following 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." Retention of Records The permittee shall retain copies of the SWMP and all reports required by this permit and records of all data used to complete the application to be covered by this permit, for three years after expiration or inactivation of permit coverage. b) The permittee shall retain a copy of the SWMP required by this permit at the construction site from the date of project initiation to the date of expiration or inactivation of permit coverage, unless another location, specified by the permittee, is approved by the Division. 3. Monitoring The Division reserves the right to require sampling and testing, on a case-by-case basis (see Part 1.13,1 e), for example to implement the provisions of a TMDL (see Part I.D.1 t of the permit). Reporting procedures for any monitoring data collected will be included in the notification by the Division of monitoring requirements. If monitoring is required, the following definitions apply: a) The thirty (30) day average shall be determined by the arithmetic mean of all samples collected during a thirty (30) consecutive -day period. b) A grab sample, for monitoring requirements, is a single "dip and take" sample.. PART 11 A. MANAGEMENT REQUIREMENTS AmendinE a Permit Certification The permittee shall inform the Division (Permits Section) in writing of changes to the information provided in the permit application, including the legal contact, the project legal description or map originally submitted with the application, or the planned total disturbed acreage. The permittee shall furnish the Division with any plans and specifications which the Division deems reasonably necessary to evaluate the effect on the discharge and receiving stream. if applicable, this notification may be accomplished through submittal of an application for a CDFS process water permit authorizing the discharge. The SWMP shall he updated and implemented prior to the changes (see Part 1.D.5.e). Any discharge to the waters of the State from a point source other than specifically authorized by this permit or a different CDPS permit is prohibited. Special Notifications - Definitions a) Spill; An unintentional release of solid or liquid material which may cause pollution of state waters, b) Upset: An exceptional incident in which there is unintentional and temporary noncompliance with permit discharge limitations because of factors beyond the reasonable control of the permittee. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventative maintenance, or careless or improper operation, 3. Noncompliance Notification a) The permittee shaIl report the following instances of noncompliance; 1) Any noncompliance which may endanger health or the environment; 2) Any spill or discharge of hazardous substances or oil which may cause pollution of the waters of the state. 3) Any discharge of stormwater which may cause an exceedance of a water quality standard, b) Por all instances of noncompliance based ort environmental hazards and chemical spills and releases, all needed information must be provided orally to the Colorado Department of Public Health and Environment spill reporting line (24-hour number for environmental hazards and chemical spills and releases; 1 -877 -51S -5W8) within 24 hours from the time the permittee becomes aware of the circumstances. For all other instances of noncompliance as defined in this section, all needed information must be provided orally to the Water Quality Control Division within 24 hours from the time the permittee becomes aware of the circumstances. For all instances of noncompliance identified here, a written submission shall also be provided within 5 calendar days of the time the permittee becomes aware of the circumstances. The written submission shall contain a description on 1) The noncompliance and its cause; 2) The period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; 3) Steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance. A. MANAGEMENT REQUIREMENTS (cont.) 4, Submission of Incorrect or Incomplete Information Where the permittee failed to submit any relevant facts in a permit application, or submitted incorrect information in a permit application or report to the Division, or relevant new information becomes available, the permittee shall promptly submit the relevant application information which was not submitted or any additional information needed to correct any erroneous information previously submitted. 5 Bypass a) A bypass, which causes effluent limitations (Le., requirements to implement BMPs in accordance with Parts 1.13,3 and 1.D,2 of the permit) to be exceeded is prohibited, and the Division may take enforcement action against a permittee for such a bypass, unless: 1) Bypass was unavoidable to prevent loss of life, personal injury, or severe property damage; 2) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities (e.g., alternative BMPs), retention of untreated wastes, or maintenance during normal periods of equipment downtime. This condition is not satisfied if the permittee could have installed adequate backup equipment (e.g , implemented additional BMPs) to prevent a bypass which occurred during normal periods of equipment downtime or preventative maintenance; and 3) The permittee submitted notices as required in "Non -Compliance Notification," Part Il.A.3. Upsets a) Effect of an Upset; An upset constitutes an affirmative defense to an action brought for noncompliance with permit limitations and requirements if the requirements of paragraph b of this section are met. (No determination made during administrative review of claims that noncompliance was caused by upset, and before an action for noncompliance, is final administrative action subject to judicial review.) b) Conditions Necessary for a Remonstration of Upset: A permittee who wishes to establish the affirmative defense of upset shall demonstrate through properly signed contemporaneous operating logs, or other relevant evidence that, 1) An upset occurred and that the permittee can identify the specific cause(s) of the upset; 2) The permitted facility was at the time being properly operated; 3) The permittee submitted notice of the upset as required in Part II.A,3. of this permit (24-hour notice); and 4) The permittee complied with any remedial measures required under 40 CFR Section 122,41(d) of the federal regulations or Section 61.8(3)(h) of the Colorado Discharge Permit System Regulations,. c) Burden of Proof: In any enforcement proceeding the permittee seeking to establish the occurrence of an upset has the burden of proof. ?_ Removed Substances Solids, sludges, or other pollutants removed in the course of treatment or control of discharges shall be properly disposed of in a manner such as to prevent any pollutant from such materials from entering waters of the State. tl. Minimization of Adverse impact The permittee shall take all reasonable steps to minimize any adverse impact to waters of the State resulting from noncompliance with any terms and conditions specified in this permit, including such accelerated or additional monitoring as necessary to determine the nature and impact of the noncomplying discharge. A. MANAGEMENT REQUIREMENTS (cont.) 9. Reduction, Loss, or Failure of Stormwater Controls The permittee has the duty to halt or reduce any activity if necessary to maintain compliance with the permit requirements. Upon reduction, loss, or failure of any stormwater controls, the permittee shall, to the extent necessary to maintain compliance with its permit, control production, or remove all pollutant sources from exposure to stormwater, or both, until the stormwater controls are restored or an alternative method of treatmenticontrol is provided. It shall not be a defense for a permittee in an enforcement action that it would be necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this permit. I D. Proper Operation and Maintenance The permittee shall at all limes properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the permittee to achieve compliance with the conditions of this permit. Proper operation and maintenance includes effective performance, adequate funding, adequate operator staffing and training, and adequate laboratory and process controls, including appropriate quality assurance procedures. This provision requires the operation of back-up or auxiliary facilities or similar systems only when necessary to achieve compliance with the conditions of the permit. B. RESPONSIBILITIES Inspections and RiEht to Entry The permittee shall allow the Director of the State Water Quality Control Division, the EPA Regional Administrator, and/or their authorized representative(s), upon the presentation of credentials: a) To enter upon the permittee's premises where a regulated facility or activity is located or in which any records are required to be kepi under the terms and conditions of this permit; b} At reasonable times to have access to and copy any records required to be kept under the terms and conditions of this permit and to inspect any monitoring equipment or monitoring method required in the permit; and e) To enter upon the permittee's premises to investigate, within reason, any actual, suspected, or potential source of water pollution, or any violation of the Colorado Water Quality Control Act. The investigation rnay include, but is not limited to, the following: sampling of any discharge and/or process waters, the taking of photographs, interviewing permittee staff on alleged violations and other matters related to the permit, and access to any and all facilities or areas within the permittee's premises that may have any effect on the discharge, permit, or any alleged violation. Duty to Provide information The permittee shall furnish to the Division, within the time frame specified by the Division, any information which the Division may request to determine whether cause exists for modifying, revoking and reissuing, or inactivating coverage under this permit, or to determine compliance with this permit, The permittee shall also furnish to the Division, upon request, copies of records required to be kept by this permit. 3. Transfer of Ownership or Control Certification under this permit may be transferred to a new permittee if: a) The current permittee notifies the Division in writing when the transfer is desired as outlined in Part 1.A.7; and b) The notice includes a written agreement between the existing and new permittees containing a specific date for transfer of permit responsibility, coverage and liability between them; and c) The current permittee has met all fee requirements of the Colorado Discharge Permit System Regulations, Section 61.15. B. RESPONSIBILITIES (cont,) 4, Modification, Suspension, or Revocation of Permit By Division All permit modification, inactivation or revocation and reissuance actions shall be subject to the requirements of the Colorado Discharge Permit System Regulations, Sections 61.5(2), 6 L5(3), 61.7 and 61,15, 5 C.C.R, 1002-61, except for minor modifications. a) This permit, and/or certification under this permit, may be modified, suspended, or revoked in whole or in part during its term for reasons determined by the Division including, but not limited to, the following: I) Violation of any terms or conditions of the permit; 2) Obtaining a permit by misrepresentation or failing to disclose any fact which is material to the granting or denial of a permit or to the establishment of terms or conditions of the permit; 3) Materially false or inaccurate statements or information in the application for the permit; 4) Promulgation of toxic effluent standards or prohibitions (including any schedule of compliance specified in such effluent standard or prohibition) which are established under Section 307 of the Clean Water Act, where such a toxic pollutant is present in the discharge and such standard or prohibition is more stringent than any iimitation for such pollutant in this permit. This permit, and/or certification under this permit, may be modified in whole or in part due to a change in any condition that requires either a temporary or permanent reduction or elimination of the permitted discharge, such as: 1) Promulgation of Water Quality Standards applicable to waters affected by the permitted discharge; or 2) Effluent limitations or other requirements applicable pursuant to the State Act or federal requirements; or 3) Control regulations promulgated; or 4) Other available information indicates a potential for violation of adopted Water Quality Standards or stream classifications. c) This permit, or certification under this permit, may be modified in whole or in part to include new effluent limitations and other appropriate permit conditions where data submitted pursuant to Part] indicate that such effluent limitations and permit conditions are necessary to ensure compliance with applicable water quality standards and protection of classified uses. d) At the request of the permittee, the Division may modify or inactivate certification under this permit if the following conditions are met: 1) In the case of inactivation, the permittee notifies the Division of its intent to inactivate the certification. and certifies that the site has been finally stabilized; 2) In the case of inactivation, the permittee has ceased any and all discharges to state waters and demonstrates to the Division there is no probability of further uncontrolled discharge(s) which may affect waters of the State. 3) The Division finds that the permittee has shown reasonable grounds consistent with the Federal and State statutes and regulations for such modification, amendment or inactivation; 4) Fee requirements of Section 61,15 of the Colorado Discharge Permit System Regulations have been met; and 5) Applicable requirements of public notice have been met. For small construction sites covered by a Qualifying Local Program, coverage under this permit is automatically terminated when a site has been Finally stabilized. B. RESPONSIBILITIES (cont.) 5. Permit Violations Failure to comply with any terms and/or conditions of this permit shall be a violation of this permit. Dischargers of stormwater associated with industrial activity, as defined in the EPA Stormwater Regulation (40 CFR 122.26(6)(14) and Section 61.3(2) of the Colorado Discharge Permit System Regulations, which do not obtain coverage under this or other Colorado general permits, or under an individual CDPS permit regulating industrial stormwater, will be in violation of the federal Clean Water Act and the Colorado Water Quality Control Act, 25-8-101, as amended. Failure to comply with CDPS permit requirements will also constitute a violation. 6. Legal Responsibilities The issuance of this permit does not convey any property or water rights in either real or personal property, or stream flows, or any exclusive privileges, nor does it authorize any injury to private property or any invasion of personal rights, nor any infringement of Federal, State or local laws or regulations. Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the permittee from any responsibilities, liabilities, or penalties established pursuant to any applicable State law or regulation under authority granted by Section 514 of the Clean Water Act. 7. Severability The provisions of this permit are severable. If any provisions of this permit, or the application of any provision of this permit to any circumstance, are held invalid, the application of such provision to other circumstances and the application of the remainder of this permit shall not be affected, Renewal Application If the permittee desires to continue to discharge, a permit renewal application shall be submitted at least ninety (90) days before this permit expires. If the permittee anticipates that there will be no discharge after the expiration date of this permit, the Division should be promptly notified so that it can inactivate the certification in accordance with Part iI,B.4,d. 9, Confidentiality Except for data determined to be confidential under Section 308 attic Federal Clean Water Act and Colorado Discharge Permit System Regulations, Section 6L5(4), all reports prepared in accordance with the terms of this permit shall be available for public inspection at the offices of the Division. The permittee must state what is confidential at the time of submittal. Any information relating to any secret process, method of manufacture or production, or sales or marketing data which has been declared confidential by the permittee, and which may be acquired, ascertained, or discovered, whether in any sampling investigation, emergency investigation, or otherwise, shall not be publicly disclosed by any member, officer, or employee of the Commission or the Division, but shall be kept confidential. Any person seeking to invoke the protection of this section shall bear the burden of proving its applicability, This section shall never be interpreted as preventing full disclosure of effluent data. 10. Fees The permittee is required to submit payment of an annual fee as set forth in the Water Quality Control Act, Failure to submit the required fee when due and payable is a violation of the permit and will result in enforcement action pursuant to Section 25-5-601 et, seq., C,R,S, 1973 as amended. B. RESPONSIBILITIES (cont.) 1 I. RerluirinE an Individual CDPS Permit The Director may require the permittee to apply for and obtain an individual or alternate general CDPS permit if: a) The discharger is not in compliance with the conditions of this general permit; b) Conditions or standards have changed so that the discharge no longer qualifies for a general permit; or c) Data/information become available which indicate water quality standards may be violated. The permittee must be notified in writing that an application for an individual or alternate general CDPS permit is required. When an individual or alternate general CDPS permit is issued to an operator otherwise covered under this general permit, the applicability of this general permit to that operator is automatically inactivated upon the effective date of the individual or alternate general CDPS permit, Water Quality Control Division WQCD-P-B2 4300 Cherry Creek Drive South Denver, Colorado 80246-1530 RATIONALE STORMWATER DISCHARGES ASSOCL4TED WITH CONSTRUCTION ACTIVITY GENERAL PERMIT IN COLORADO THIRD RENEWAL COLORADO DISCHARGE PERMIT NUMBER COR -030000 CONTENTS PAGE I, Introduction 1 II, Changes in this General Permit 1 III, Background 8 IV Stormwater Discharges Associated with Construction Activity 9 V Coverage Under this Permit 10 VI. Application and Certification 10 YII. Qual fying Local Programs l 1 VIII Terms and Conditions of Permit 11 IX Public Notice — 12/22/06 15 X Public Notice — 3/23/07 15 1. 1NT ROD UCTION This permit is for the regulation of 8tormwaler runoff from construction activities, and specific allowable non- stormwater discharges in accordance with Part 1. D, 3 of the permit. The term "construction activity" includes ground surface disturbing activities, including, but not limited to, clearing grading, excavation, demolition, installation of new or improved haul and access roads, staging areas, stockpiling offtll materials. and borrow areas_ "Stormwater" is precipitation -induced surface runoff This rationale will explain the background of the Stormwater program, activities which are covered under this permit, how to apply for coverage under this permit, and the requirements girth's permit. The forms discussed in Me rationale and permit are available on the Water Quality Control Division's website at: ivut' W. cdplze.state.ta.us/wo/PernrltsUnit II, CHANGES IN THIS GENERAL PERMIT Several notable changes from the previous General Permit for Construction Activities have been incorporated into this permit. Significant changes are listed below. Numerous other minor changes were made for clarification purposes only. A. Authority to Discharge This section has been restructured to list all of the types of activities covered by this permit; and to be consistent with the definition of "construction activity." The definition of construction activity has been expanded to provide clarification. See Part LA.1 of the permit. PART II Permit - Page 24 Permit No, COR -030000 II.. CHANGES IN THIS GENERAL PERMIT (cont,) B, Authority to Discharge — ail and Gas Construction This section has been added, to take into account a regulatory change. The federal Energy Policy Act of 2005 exempts nearly all oil and gas construction activities from federal requirements under the Clean Water Act's NPDES storrnwater discharge permit program. In January 2006, the Colorado Water Quality Control Conrniission held a hearing to determine what effects, if any, the change in federal law would have upon Colorado's storm water regulations. The Commission determined that oil and gas construction sites in Colorado that disturb one or more acres are still required to be covered under Colorado's stormwater permitting regulations (Colorado Discharge Permit System (CLIPS) regulations (5CCR 1002-61)). In practice, oil and gas construction sites have the same requirements under this permit as do other types of construction. However, this permit contains some references to the federal Clean Water Act; generally these references are not applicable to nil and gas construction sites to the extent that the references. are limited by the federal Energy Policy Act of 2005. See Part LA.1(b) of the permit, C. Application Requirements The permit application requirements have changed slightly, including the addition of an email address. i available, See Part LA.4(b). The applicant must be either the owner and/or operator of the construction site. An operator at a construction site that is not covered by a certification held by an appropriate entity may be held liable for operating without the necessary permit coverage. D. Temporary Coverage Part I.A.5(d) of the previous permit (effective July I, 2002) dealt with temporarily covering a facility under the general permit even -an individual permit is mare appropriate. This permit section essentially duplicated the previous section (see Part 14.5(c)), and so it has been deleted E. Reassignment of'Permit Coverage Procedures have been added to clar 5 the requirements for the transfer of coverage of specific portions of a permitted site ro a second party. See Section VIII1.3 of the rationale and Part LA.8 of the permit F Individual Permit Criteria This section has been modified to include situations involving a Total Maximum Daily Load (PILL), See Part 1.4.11 of the permit. G. Stormwater Management Plan (SWMP) The Storrnwater Management Plan section has been divided into two parts: Stormwater Management Plan (SWMP) — General Requirements, which provides the basic framework and general requirements for the SWMP, and Stormwater Management Plan (SWMP) — Contents, which specifically identifies each item that must he addressed in the SWMP. See Parts LB and IC of the permit. H. Stormwater Management Plan (SWMP) — General Requirements The SWMP General Requirements section has been modified to require that the SWMP be updated in accordance with Parts I.D.5(c) and 1..D.5(d) of the permit (SWMP Review/Chunge,$), This additional requirement ensures that the SWMP provisions reflect current site conditions, See Part I L3.2(c) of the permit. PART 11 Permit - Page 25 Permit No. COR -030000 II. CHANGES IN THIS GENERAL PERMIT (cont.) I. Stormwater Management Plan (SWMP) — Contents The SWMP Contents section has been modified. Some of the changes are limited to organization of information, which does not require modification of an existing permittee's current SWMP, Most of'the SWMP changes involve either clarifications, reformatting, or taking recommendations from the Division's SWMP guide and making them permit requirements (e.g., vehicle tracking controls, RMP installation specifications). Ilan existing permittee (i.e., those with permit coverage before June 30, 2007) followed the recommendations in the SWMP guide (Appendix A of the permit application), then their SWMP will presumably meet the new requirements. However, for any existing permittees who did not follow the applicable SWMP guide recommendations, their SMWP must be amended to include the new required items.- - SWMP Administrator - Identification of potential pollutant sources - Best Management Practices descriptions and installation specifications, including dedicated concrete or asphalt batch plants; vehicle tracking control,- and waste management and disposal (including concrete washout activities). For existing permittees, any SWMP changes based on the change in permit requirements must be completed by October I, 2007. The plan is not lo be submitted to the Division unless requested, but must he available on site as outlined in Part I. D, 5(b) of the permit. The BMP requirement clarifications included in this renewed permit in no way imply that adequate BMPs to address alt pollutant sources at a permitted site were not required in previous permits. The revised requirements are intended only to better clary SWMP content requirements and provide unproved direction to permittees, The SWMP changes are listed below. All new applicants (after June 30, 2007) for permit coverage fbr their sites must fully comply with the new SWMP organization, plan requirements, and implementation. 1. Site Description: The requirement to provide an estimate of the run-off coefficient has beer; removed. The run-off coefficient as currently utilized in the SWMP may not contribute sufficiently to permit compliance tojusti& the effort in determining accurate values. See Part IC, I of the permit. However, the Division still encourages use of the coefficient as needed to adequately evaluate site-specific BMP selection and design criteria (e.g., pond capacities, BMP location, etc.) See Section C,2 of the SWMP guidance (Appendix A of the permit application). ?. Site Map: The requirement to identify boundaries of the I00 -year flood plain has been removed. The boundaries as currently utilized in the SWMP may not contribute sufficiently to permit compliance to justify the effort in determining their location. See Part I. C.2 of the perrnit. 3. Stormwater Management Controls: This section has been modified to require identification of a SWMP Administrator and all potential pollutants sources in the SWMP. See Part I. C.3 of the permit, a) The SWMP Administrator is a specific individual(s), position or title who is responsible for the process of developing, implementing, maintaining, and revising the SWMP. This individual serves as the comprehensive point of contact far all aspects of the facility's SWMP. This requirement may necessitate changes to existing permittees' SIVMPs. PART 11 Permit - Page 26 Permit No. COR -030000 II. CHANGES IN THIS GENERAL PERMIT (cont.) b) The requirement to identify Potential Pollutant Sources has been expanded to include more details for the evaluation of such sources, This evaluation allows. for the appropriate selection of BMPs for implementation at a facility or site, Additionally, this section was added to be consistent with the SWMP guide. This requirement may necessitate changes to existing permittees' SWMPs. c) Best Managetnent Practices (BMPs) for Stormwater Pollution Prevention: This section was modified to require the fallowing items to be addressed in the SWMP, These requirements may necessitate changes to existing permittees' SWMPs, This section also requires that the SWMP provide installation and implementation specifications for each BMP identified in the SWMP. For structural BMPs, in most cases, this must include a technical drawing to provide adequate installation specifications, See Part LC.3(c). i) Dedicated concrete or asphalt batch plants. This section requires that the practices used to reduce the pollutants in stormwater discharges associated with dedicated concrete or asphalt batch plants be identified in the SWMP. (Coverage under the construction site SWMP and permit is not required for batch plants if they have alternate CDPS permit coverage.) ii) Vehicle tracking control. This section requires that practices be implemented to control sediment from vehicle tracking, and that all such practices implemented at the site be clearly described in the SWMP. ii[) Waste management and disposal. This section requires that the practices implemented al the site to control stormwater pollution from construction site waste, including concrete washout activities, be clearly described in the SWMP. It also requires that concrete washout activities be conducted in a manner that does not contribute pollutants to surface waters or stormwater runoff iv) Concrete Washout Water. Part I D.3(c) of the permit has been revised to conditionally authorize discharges to the ground of concrete wash waterfront washing of tools and concrete mixer chutes when appropriate BMPs are implemented The permit prohibits the discharge of concrete washout water to surface waters and to storm sewer systems_ Part I.C.3()(7) ()Me permit requires that BMPs be in place to prevent surface discharges of concrete washout water from the site. The use of unlined pits to contain concrete washout water is a common practice in Colorado. The Division has further evaluated the need for a permit for discharge of concrete washout water to the ground, The Division has determined that the use of appropriate BMPs for on-site washing of tools and concrete mixer chutes would prevent any significant discharge to groundwater. BMPs to protect groundwater are required by Part 1, C.3(c)(7) of the permit. Because pH is a pollutant of concern for washout activities, the soil must have adequate buffering capacity to result in protection of the groundwater standard, or a liner/containment must be used. The following management practices are recommended to prevent an impact from unlined pits to groundwater: (1) the use of the washout site should be temporary (less than 1 year), and (2) the washout site should he not be located in an area where shallow groundwater may be present, such as near natural drainages, springs or wetlands. PART 11 Permit - Page 27 Permit No. COR -030000 IL CHANGES IN THIS GENERAL PERMIT (cont.) Where adequate management practices are not Allowed to protect groundwater quality, the Department may require discharges ro unlined pits to cease, or require the entity 10 obtain alternate regulatory approval through notice from either the Water Quality Control Division or the Hazardous Materials and Waste Managernent Division. In addition, Part I D.1(b) of the permit has been revised to clearly state that the permit does not authorize on-site permanent disposal of concrete washout waste, only temporary containment of concrete avashout water from washing of tools and concrete mixer chutes. Upon termination of use of the washout site, accumulated solid waste, including concrete waste and any contaminated sods, must he removed from the site to prevent on-site disposal of solid waste, v) Construction Dewatering, Part I.D.3(d) of the permit has been revised to conditionally authorize discharges to the ground ofwaterfrom construction dewatering activities when appropriate BMPs are implemented The permit does not authorize the discharge of groundwater from construction dewatering to surface waters or to storm sewer systems. Part I,C.3(c)(8) of the permit requires that BMPs be in place to prevent surface discharges. The permittee may apply for coverage under a separate CDPS discharge permit, such as the Construction Dewatering general permit, if there is a potential jar discharges !o surface waters. The Division has determined that potential pollutant sources introduced into groundwater from construction dewatering operations do not have a reasonable potential to result in exceedance of groundwater standards when the discharge is to the ground. The primary pollutant of concern in uncontaminated groundwater is sediment. Although technology- based standards for sediment do exist in 5 CCR 1002-41, the discharge of sediment to the ground as part of construction dewatering does not have the reasonable potential to result In transport of sediment to the groundwater table so as to result in an exceedance of those standards. For a discharge of water contaminated with other pollutants that are present in concentrations that may cause an exceedance of groundwater standards, separate CDPS discharge permit coverage is required, Contaminated groundwater may include That contaminated with pollutants from a landfill, mining activity, industrial pollutant plume, underground storage tank, or other source of human -induced groundwater pollution and exceeding the State groundwater standards in Regulations 5 CCR 1002-41 and 42. J Terms and Conditions. General Limitations and Design Standards This section reiterates the requirement that facilities select, install, implement, and maintain appropriate BMPs, following good engineering, hydrologic and pollution control practices. In addition, requirements for protection of water quality standards (see Part ID 1. (a) of the permit) and requirements to adequately design BMPs to prevent pollution or degradation of State waters (see Part 1. D.2 of the permit) have been revised and are fully discussed in Pari 111.B of the rationale, below. Additional language was also added to Section 1II, B of the rationale further claming the expectations for compliance with this permit_ 1. Management of Site Waste This section has been modified to clarify that on-site waste must be properly managed to prevent potential pollution of State waters, and that this permit does not authorize on-site waste disposal. Solid waste disposal is regulated by the hazardous Materials and Waste Managernent Division. PART 11 Permit - Page 28 Permit No. COR -030000 11, CHANGES IN THIS GENERAL PERMIT (cont) IC, Terms and Conditions, SWMP Requirements 1_ SWMP Review/Changes: This section now requires that when changes are made to site conditions, the SWMP must be revised immediately, except for some BMP description changes which conditionally may occur within 72 hours. This requirement is included to both ensure that the SWMP be kept accurate and up-to-date, and to clarifithat siormwater management at a site typically should be proactive instead of responsive, and be integrated inw site management to ensure it is calibrated with those changes. The section was also clarified to state that only changes in site conditions that do not require new or modified BMPs do not need to be addressed in the SWMP. See Part ID.5(c) of the permit. 2. SWMP Certification: The previous permit was unclear on a requirement that the copy of SWMP that remains at the facility had to be signed in accordance with permit signatory requirements. This requirement has been deleted. The signatory requirement of Part IF. I only applies to the SWMP i fit is to be submitted lo the Division or to EPA. See Part IF. I of the permit. L. Terms and Conditions, Post -Storm Inspections The previous permit required post -storm inspections, but did not specili, the timing of inspections. This section now requires that post -storm event inspections generally be conducted within 24 hours of the event An alternative timeline has been allowed, only for sites where there are no construction activities occurring following a storm event. For this condition, post -storm event inspections shall instead be conducted prior to commencing construction activities, but no later than 72 hoursfollowing the storm event, and the delay noted in the inspection report. Any exception from the minimum inspection schedule is temporary, and does not eliminate the requirement to perfirtn routine maintenance due to the el:Theis of a storm event including maintaining vehicle tracking controls and removing sediment from impervious areas. In many cases, maintenance needs will require a more frequent inspection schedule than the minimum inspections required in the permit, to ensure that BMPs continue to operate as needed to comply with the permit See Part ID. 6(a) of the perrnit. M Terms and Conditions, Inspections The Winter Conditions Inspection Exclusion section has been modified to include documentation requirements for this exclusion. See Part ID. 6(o) ofthe permit, The Inspection Scope has been modified to include the requirement to inspect waste storage areas during inspections conducted in accordance with the permit See Part I.D.6(9) of the perrnit. 2. The requirements for sites to qualify for reduced inspection frequencies fir completed sites have been slightly modified (see Part ID. 6(a,(2) of the permit). The requirement now is that only construction activities that disturb the ground surface must he completed. Construction activities that can be conducted without disturbance of the ground swface,- for example, interior building construction, and some oil well activities, would not prohibit a siie.from atherivise for the reduced inspection frequency_ In addition, the requirement for the site to be prepared far final stabilization has been slightly modified lo allow for sites that have not yet been seeded to quali)5), as long as the site has otherwise been prepared for final stabilization, including completion of appropriate soil preparation, amendments and stabilization practice_ This will allow fir sites with seasonal seeding limitations or where additional seed application 'nay be needed in the fiiture to still qualify' PART 11 Permit - Page 29 Permit No. COR -030000 II. CHANGES IN THIS GENERAL PERMIT (cont.) 3. The Inspection Report/Records section (Part ID. 6b)2).) was added to clarifi' reqinrernenrsfor inspection reports generated during an inspection conducted in accordance with Part I.D.6 of the permit, Inspection reports must be signed by the inspector, or the individual verify ing the corrective action indicated in the inspection report, on behalf of the permittee. Inspection reports are not typically required to be submitted to the Division, and therefore, are not required to be signed and certified for accuracy in accordance with Part IF.1 of the permit. However, any inspection reports that are submitted to the Division mustibllow the signatory requirements contained in that section. N. Terms and Conditions, Maintenance, Repair, and Replacement otControl Practices These sections have been added to clarify requirements for maintaining the Bites identified in the SWMP and/bi- addressing ineffective or failed BMPs. BMP maintenance and site assessment to determine the overall adequacy of stormwater quality management at the site must occur proactively, in order to ensure adequate control a/pollutant sources at the site. In most cases, if Bfles are already not operating effectively, or have failed, the issue must be addressed immediately, to prevent discharge ofpollutants. See Parts ID.7 and I.D.8 of the permit, a Total Maximum Daily Load (TMDL) A section on TIVIDLs has been added. This section gives a general outline of the additional requirements that may be imposed by the Division if the facility discharges to a waterbody for which a stormwater-related TMDL is in place. See Section VIII C of the rationale and Part I.D.11 of the permit. P, Additional Definitions Q. Part LE of the permit has been modified to remove the definition of runecoefficient, as it is no longer a permit requirement, The definition for state waters has also been deleted, but can be found in Regulation 61 Changes in Discharge The section on the types of discharge or facility changes that necessitate Division notification has been clarified. See Part 11,1.1 of the permit. R. Non -Compliance Notification The section on notification to the Division regarding instances of non-compliance has been amended to clarify which types of noncompliance require notification. See Part 11.A.3 of the permit. S. Short Term Certifications The previous permit allowed small short-term construction activities to be authorized for a predetermined period from 3 to 12 months, and then automatically expire (an inactivation request did not need to he submitted). The issuance of these certifications has led to significant confusion and incidents of noncompliance resultingfront permittees unintentionally letting their certifications expire prior to final stabilization, as well as issues regarding billing. Therefore, the provisions for short-term certifications have been deleted. T Bypass The Division has revised the Bypass conditions in Part 11.4.5 of the permit to be consistent with the requirements of Regulation 61.8(3)(1). The revised language addresses under what rare occurrences Biles may be bypassed at a site. PART 11 Permit Page 30 Permit No. COR -030000 111 BACKGROUND As required under the Clean Water Act amendments 12/'1987, the Environmental Protection Agency (EPA) has established aframework fbr regulating municipal and industrial stormwater discharges. This framework is under the National Pollutant Discharge Elimination System (NPDES) program (Note. The Colorado program is referred to as the Colorado Discharge Permit System, or CDPS, instead of NPDES) The Water Quality Control Division ("the Division") has stormwater regulations (SCCR 1002-61) in place. These regulations require specific types of industrial facilities that discharge stormwater associated with industrial activity (industrial stormwater), to obtain a CDPS permit for such discharge. The regulations specifically include construction activities that disturb one acre of land or more as industrial facilities. Construction activities that are part of a larger eornrnon plan of development which disturb one acre or more over a period of time are also included. A. General Permits The Division has determined that the use of general permits is the appropriate procedure for handling most of the thousands of industrial stormwater applications within the State. B, Permit Requirements This permit does not impose numeric effluent limits or require submission of effluent monitoring data in the permit application or in the permit itself. The permit instead imposes practice -based effluent limitations fir stormwater discharges through the requirement to develop and implement a Storrnwater Management Plan (SWMP), The narrative permit requirements include prohibitions against discharges gfnon-stormwater (e.g., process water). See Part 1.D.3 of the permit. The permit conditions for the SWMP include the requirement for dischargers to select. implement and maintain Best Management Practices (BMPs) at a permitted construction site that adequately minimize pollutants in the discharges to assure compliance with the terms and conditions of the permit. Part 1112 of the permit includes basic design standards for BMPs implemented at the site. Facilities must select, install, implement, and maintain appropriate BMPs, following good engineering, hydrologic and pollution control practices. BMPs implemented at the site must be adequately designed to control all potential pollutant sources associated with construction activity to prevent pollution or degradation of Stare waters, Pollution is defined in CDPS regulations (SCCR 1002-61) as man-made or man -induced, or natural alteration of the physical, chemical, biological, and radiological integrity of water. Utilizing industry -accepted standards far BMP selection that are appropriate for the conditions and pollutant sources present will typically he adequate to meet these criteria, since construction BMPs are intended to prevent the discharge of all but minimal amounts of sediment or other pollutants that would not result in actual pollution of State waters, as defined above, However, site-specific design, including ongoing assessment of BMPs and pollutant sources, is necessary to ensure that BMPs operate as intended. The permit further requires that stormwater discharges from construction activities shall not cause, have the reasonable potential to cause, or measurably contribute to an excursion above any water quality standard, including narrative standards for water quality. This condition is the basis for all CDPS Discharge permits, and addresses the need to ensure that waters of the State maintain adequate water quality, in accordance wish water quality standards, to continue to meet their designated uses. 1t is believed that, in most cases, BMPs can be adequate to rneet applicable water quality standards. If'water quality impacts are noted, or the Division othenvise determines that additional permit requirements are necessary, they are typically imposed as follows; 1) at the renewal of this general permit or through a general permit specific to an industrial sector (if the issue is sector -based); 2) through direction from the Division based on the implementation of'a TMDL (if the issue is watershed -based); or 3) f the issue is site-specific, through a revision to the certification from the Division based on an inspection or SWMP review, or through an individual permit. PART II Permit - Page 31 Permit No. COR -030000 111. BACKGROUND (cont) Some construction sites may he required to comply with a Qualifying Local Program in place of meeting several of the specific requirements in this permit. Sites covered by a Qualifying Local Program may not be required to submit an application for coverage or a wlice of inactivation and may not be required to pay the Division's annual lee. See Section VII of the rationale_ C. Violations/Penalties Dischargers ofstormwater associated with industrial activity, as defined in the CDPS regulations (5CCR 1002-61), that do not obtain coverage under this or other Colorado general permits, or under an individual CDPS permit regulating industrial stormwater, will be in violation of the Federal Clean Water Act and the Colorado Water Quality Control Act, 25-8-101. For facilities coveredlinder a CDPS permit, failure to comply with any CDPS permit requirement constitutes a violation, As of the time o j permit issuance, civil penalties for violations of the Act or CDPS permit requirements may be up to $10,000 per day, and criminal pollution of state waters is punishable by fines ()flip to $25, 000 per day. IV. STORMWATER DISCHARGES ASSOCIATED WITII CONSTRUCTION ACTIVITY The stormwater regulations (CDPS regulations (5CCR 1002-61)), require that stormwater discharges associated with certain industrial activities be covered under the permit program. Construction activity that disturbs one acre or more during the life of the project is specffically included in the listed industrial activities, This permit is intended to cover most stormwater discharges from construction facilities required by Slaw regulation to obtain a permit A. Construction Activity Construction activity includes ground surface disturbing activities including, but not limited to, clearing, grading, excavation, demolition, installation of new or improved haul and access roads, staging areas, stockpiling offill materials, and dedicated borrow/fill areas, Construction does riot include routine maintenance to maintain original line and grade, hydraulic capacity, or original purpose of the facilio,, (The maintenance exclusion is intended for projects such as road resurfacing, and where there will be less than one acre of additional ground disturbed. Improvements or upgrades to existing facilities or roads, where at least one acre is disturbed, would not qualify as "routine maintenance,7) Definitions of additional terms can be fbund in Part 1. E of the permit. Stortnwater dischargesfrom all construction activity require permit coverage, except fir operations that result in the disturbance of less than one acre ()Pool land area and which are not part of a larger common plan of development or sale. A "larger common plan of development or sale" is a contiguous area where multiple separate and distinct construction activities may be taking place at different times on different schedules. R. Types of Discharges/Activities Covered 1 Storntwaler: This permit is intended to cover most new or existing discharges composed entirely of stormwater from construction activities that are required by State regulation to obtain a permit. This includes stormwater discharges associated with areas that are dedicated to producing earthen materials, such as soils, sand, and gravel, for use at a single construction site. These areas may be located at the construction site or at some other location, This permit does not authorize the discharge of mine water or process waterfrom borrow areas. This permit may also cover stormwater discharges associated with dedicated asphalt plants and concrete plants located ar a specific construction site. PART 11 Permit - Page 32 Permit No. COR -030000 IV.. STQRMWATER DISCHARGES ASSOCIATED WITH CONSTRUCTION ACTIVITY (cont.) 2. Process water: Under certain restrictions, discharges to the ground from construction dewatering, and from concrete washout activities, are also covered (see Parts 1.C.3(c)(7), 1.C.3(c)(8), I.D.3(c) and L D.3(d) of the permit), Types ofActivities NOT Covered I. Starmwater: Aside from the sources listed in subparagraph B,1, above, this permit does not c=over stormwater discharged from construction sites that is mixed with stormwater from other types of industrial activities, or process water of any kind, Other types of industrial activities that require stormwater discharge permits pursuant to different sections of the regulations (Regulation 5 CCR 1002-61, Section 61,2(e)(iii}(A-1, K)], are not covered by this permit. Process water: This permit also does not cover any discharge of process water to surface waters. If the construction activity encounters groundwater, in order to discharge this groundwater to surface water,., a Construction Dewatering Discharge Permit (permit number COG -070000) must also be obtained. An application frar this permit can be obtained from the Division at the address listed in Part I.A.4(a) of the permit, or at the website in Section 1 of the rationale, V. COVERAGE UNDER THIS GENERAL PERMIT Under this general permit, owners or operators of.stormwater discharges associated with construction activity may be granted authorization to discharge stormwater into waters of the State of Colorado. This includes stormwater discharges associated with industrial activity from areas that are dedicated to producing earthen materials, such as soils, sand and gravel, for use at a single construction site, and dedicated asphalt plants and dedicated concrete plants. This permit does not pre-empt or supersede the authority of other local, state or federal agencies to prohibit, restrict or control discharges ofstormwater to storm drain systems or other water courses within their jurisdiction. Authorization to discharge under the permit requires submittal of a completed application form and a certification that the SWMP is complete, unless the site is covered by a Qualing Local Program. Upon receipt of all required information, the Division may allow or disallow coverage under the general permit_ VI APPLICATION AND CERTIFICATION T ION At least ten days prior to the comrm.wncement of construction activities, the owner or operator of the construction site shall submit an original completed application which includes the signed certification that the SWMP is complete. Original signatures are required for the application to be considered complete. For small construction sites only, if the site is covered by a Qual ing Local Program (see below), submittal of an application is not required. For the purposes of this permit, the "operator" is the person who has day -to -dao control over the project. This can he the owner, the developer, the general contractor or the agent o,f one of these parties, in some circumstances. At different times during a construction project, different types of parties. may satisfy the definition of "operator" and the certification may be transferred as roles change. (Note - Under the Federal regulations, this application process is referred to as a Notice of Intent, or NOI. For internal consistency with its current program, the Division will continue to use the term "application') A summary of the permit application requirements is found in the permit at Part LA.4(b). If coverage under this general permit is appropriate, then a certification will be developed and the applicant will be certified under this general permit, PART II Permit - Page 33 Permit No, COR -030000 VII. QUALIFYING LOCAL PROGRAMS For stormwater discharges associated with small construction activity (i.e., one to five acre disturbed area sites), the permit includes conditions that incorporate approved qualifi,ing local erosion and sediment control program (Qualifring Local Fragrant) requirements by reference, A Qualifying Local Program is a municipal stormwater program for stormwater discharges associated with small construction activity that has been formally approved by the Division. The requirements for Qualifying Local Programs are outlined in Part 61.8(12) of the Colorado Discharger Permit System Regulations (also see the Division's"Qualifring Local Programs for Small Construction Sites - Application Guidance'). Such programs must impose requirements to protect water quality that are at least as stringent as those required in this permit. A. Approval Termination A Qualifying Local Program may he terminated by either the Division or the municipality. Upon termination of Division approval of a Qualifying Local Program, any small construction activity required to obtain permit coverage under Seciion 61.3(2)(h) of the CDPS regulations (5CCR 1002-61), shall submit an application form as provided by the Division, with a certification that the Stormwater Management Plan (SWMP) is complete as required by Part LA, 3 of the permii, within 30 days of Division notification, B. Approval Expiration Division approval of a Qualifying Local Program will expire with this general permit on June 30, 2012, Any municipality desiring to continue Division approval of their program must reapply by March 31, 2012, The Division will determine if the program may continue as a approved Qualifying Local Program. MI TERMS AND CONDITIONS OF PERMIT A. Coveraize under a Qualifying Local Program — For Small Construction Sites Only For small construction sites (disturbing less than 5 acres) covered under a Quaffing Local Program (see Section VII, above), only certain permit requirements apply, as outlined below. The local program must have been firmally designated by rhe Division to qualifr. Most municipalities have some type °Paced program and may require permits and fees. However, simply having a program in place does not necessarily mean that it is a qualifying program and that a State permit is not required. The local municipality is responsible for notifying operators and/or owners that they are covered by a Qualifying Local Program, As of May 31, 2007, the only approved Qualifying Local Programs within the state are far Golden, Durango and Lakewood. An updated list of municipalities with Qualifying Local Prograins, including contact information, is available on the Division's website at: hill.'. //1/1C,Aft//C..0.11,01Viler.dmlNloinpwchrer cons/1.144:1km, faint The Division reserves the right to require any construction owner or operator within the jurisdiction of a Qualifring Local Program covered under this permit to apply for and obtain coverage under the All requirements of this permit. 1. Permit Coverage: If a construction sire is within the jurisdiction of a Qualifying Local Program, rhe owner or operator of the construction activity is authorized to discharge stormwater associated with small construction activity under this general permit without the submittal of an applicalion to the Division, The permittee also is not required to submit an inactivation notice or payment of an annual fie to the Division. PART 11 Permit - Page 34 Permit No. COR -030000 VIII. TERMS AND CONDITIONS OF PERMIT (cont) 2. Permit Terms and Conditions: The permittee covered by a QualifYing Local Program roust comply with the requirements of that Qualing Local Program. In addition, the following permit sections are applicable: a) Parts LA.1, 1,A. 2, and 1.A.3. Authorization to discharge and discussion of coverage under• the permit. b) Part I D.1: General limitations that must be met in addition to local requirements. c) Parts I D.2, ID.3, ID. t: BMP implementation, prohibition of non-stormwater discharges unless addressed in a separate CDPS permit, and requirements related to releases of reportable quantities, d) Part I. D. 11: Potential coverage under a Total Maximum Daily Load MIDI). e) Part LE: Additional definitions Part 11 (except for Parts IIA.1, II.B.3, II.B.8, and 11.11.10): Specifically includes, but is not limited to, provisions applicable in the case of noncompliance with permit requirements, and requirements to provide information and access. B, Stormwater Management Plans (SWMPs) Prior to commencement of construction, a stormwater management plan (SWMP) shall be developed and implemented for each facility covered by this permit, A certification that the SWMP is complete must be submitted with the permit application. The SWMP shall idents potential sources of pollution (including sediment) which may reasonably be expected to affect the quality of stornrwater discharges associated with construction activityfrom the facility. In addition, the plan shall describe the Best Management Practices (BMPs) which will be used to reduce the pollutants in stor-mwater discharges from the construction site, (Note that permanent storrnwater controls, such as ponds, that are used as temporary construction BMPs roust be adequately covered in the SWMP) Facilities must implement the provisions of their SWMP as a condition of this permit. The SWMP shall include the following items: 1, Site Description 2. Site Map 3. Stormwater Management Controls 4. Long-term Stormwater Management 5. Inspection and Maintenance (See Parts I.B.. and 1C of the permit for a more detailed description of SWMP requirements.) The Division has a guidance document available on preparing a SWMP. The document is included as Appendix A of the permit application, and is available on the Division's website at Iniqr.cdphc.siale.co.lis/wq/PenniisUnit. Some changes have been made to the SWMP requirements. See Section 11.1 of the rationale for a discussion on permittee responsibilities regarding those changes. PART II Permit - Page 35 Permit No. COR -030000 MI TERMS AND CONDITIONS OF PERMIT (cont.) Master SWMP Often, a large construction project will involve multiple smaller construction sites that are within a common plan ofdevelopment, or multiple well pads under construction within an oil and gas well field. Pollutant sources and the types ofBMPs used can be relatively consistent in such cases. A permittee could significantly streamline the SWMP development process through the use of a master SWMP. SWMP information must be developed and maintained fOr all construction activities that exceed one acre (ar are part ola common plan of development exceeding one acre) conducted within the permitted area. By developing a single master plan, the permittee can eliminate the need to develop repetitive information in separate plans. Such a plan could include two sections, one containing a reference section with information applicable to all sites (e.g., installation details and maintenance requirements fir many standard BMPs, such as sill fince and erosion blankets), and the second containing all of the information specific to each site (e.g., site BMP map, drainage plans, details for BMPs requiring site specific design, such as retention ponds). As new activities begin, information required in the SWMP is added to the plan, and as areas become finally stabilized, the related information is removed. Records of information related to areas that have been finally stabilized that are removed from the active plan must be maintained for a period of at least three years from the date that the associated site !signally stabilized. C. Total Maximum Daily Load (TMDL) 1 Pile designated use of a stream or water body has been impaired by the presence of C4 pollutant(s), development of a Total Maximum Daily Load (TMDL) may be required. A TMDL is an estimate of allowable loading in the waterbody for the pollutant in question. Types of discharges that are or have the potential to be a significant source cl the pollutant are also identified. If a TMDL has been approved for any waterbody into which the permittee discharges, and siormwater discharges associated with construction activity have been assigned a pollutant -specific Wasteload Allocation (WLA) under the TMDL, the Division will either: 1. Notify the permittee of the TMDL, and amend the permittee's certification to add specific BMPs and/or other requirements, as appropriate; or 2. Ensure that the TMDL is being implemented properly through alternative local requirements, such as by a municipal siormwater permit. (The only current example of this is the Cherry Creek Reservoir Control Regulation (72,0), which mandates that municipalities within the basin require specific BMPs for construction sites.) See Part ID.11 of the permit for further information. D. Monitoring Sampling and testing of stormwater‘for specific parameters is not required on a routine basis under this permit. However, rhe Division reserves the right to require sampling and testing on a case-by-case basis, in the event that there is reason to suspect that compliance with the SWMP is a problem, or to measure the effectiveness of the BMPs in removing pollutants in the effluent. See Part I.D.1(e) of the permit. E Facility Inspections Construction sites typically must inspect their stormwater management controls at least every 14 days and within 24 hours after the end of any precipitation or snowmelt event that causes surface erosion. At sites or portions of sites where ground -disturbing construction has been completed but a vegetative cover has not been established, these inspections must occur at least once per month. (At sites where persistent snow cover condilians exist, inspections are not required during the period that melting conditions do not exist. These PART H Permit - Page 36 Permit No. COR -030000 VIII. TERMS AND CONDITIONS OF PERMIT (cont,) conditions are only expected to occur at high elevations within the Colorado mountains.) For all of these inspections, records must be kept on file. Exceptions to the inspection requirements are detailed in Part I.D.6 of the permit, F. SWMP Revisions The permittee shall amend the SWMP whenever there is a change in design, construction, operation, or maintenance of the site, which would require the implementation of new or revised BMPs, The SWMP shall also be amended if it proves to be ineffective in achieving the general objectives of controlling pollutants in stormwaler discharges associated with construction activity. The timing for completion of SWMP changes is detailed in Parts I.D.5(c) and 1. D, 5(d) of the permit. SWMP revisions shall be made prior to change in the field, or in accordance with Part I D.5(d) of the permit. G. Reporting The inspection record shall he made available to the Division upon regauest. Regular submittal of an annual report is not required in this permit. See Part I. D.9 of the permit: H, Annual Fee The permittee is required to submit payment of an annual fee as set forth in the Water Quality Control Act. Permittees will be billed for the initial permit fee within a few weeks of permit issuance and then annually, based on a July 1 through June 30 billing cycle, 1. Responsibility for Permit The permit certification for a site may he inactivated, once coverage is no longer needed. The certification may be transferred, if another party is assuming responsibility for the entire arca covered by the certification. In addition, permit responsibility for part of the area covered by the certification may be reassigned to another party. These actions are summarized below. The Stormwater Program construction fact sheet explains these actions in,fiurther detail under the section on Multiple Owner/Developer Sites, and is available on the Division website at hap : 5111', ;Vilhe.srrrte_rr,,rn W ('I'.y'1rrrll;rrli .►10111iii' ilex f_'rrirsll•ir<'t.lfistf.l'OF, Section F 1. Inactivation Notice: When a site has been finally stabilized in accordance with the SWMP, the permittee shall submit an Inactivation Notice that is signed in accordance with Part I. F.1 of the permit. A summary of the Inactivation Notice content is described in Part I.A. b of the permit. A copy oldie Inactivation Notice form will be mailed to the permittee along with the permit certification. Additional copies are available from the Division. For sites where all areas have been removed from permit coverage, the permittee may submit an inactivation notice and terminate permit coverage. In such cases the permittee would no longer have any land covered under their permit certification, and therefore there would be no areas remaining to finally stabilize, Areas may be removed from permit coverage by. - reassignment of permit coverage (Part 1.A.8 of the permit); - sale to homeowner(s) (Part I.A.9 of the permit) or - amendment by the permittee, in accordance with Division guidance for areas where permit coverage has been obtained by a new operator or returned to agrricultziral use. PART 11 Permit - Page 37 Permit No. COR -030000 VIII TERMS AND CONDITIONS OF PERMIT (cont.) 2. Transfer of Penn& When responsibility for stormwater dischargesfor an entire construction site changes from one individual to another, the permit shall he transferred in accordance with Part IA.7 of the permit. The permittee shall submit a completed Notice of Transfer form, which is available from the Division, and at Icwwcciphe.state,co.usiwti/Pennib Unit. If the new responsible party will not complete the transfer form, the permit may be inactivated if the permittee has no legal responsibility, through ownership or contract, for the construction activities at the site. In this case, the new owner or operator would be required !o obtain permit coverage separately, 3. Reassignment of Permit When a permittee no longer has control of a specific portion of a permitted site, and wishes to transfer coverage of that portion of the site to a second party, the permittee shall submit a completed Notice of Reassignment of Pertnit Coverage form, which is available li-om the Division, and at tilviv,t.'dpile..,tate.co,lis, wei.Perinitsbritil. The form requires that both the existing permittee and new permittee complete their respective ,sections. See Part I4.8 of the permit. J, Duration of Permit The general permit will expire on June 30, 2012. The permittee's authority to discharge under this permit is approved until the expiration date of the general perpnit. Any permiltee desiring continued coverage under the general permit past the expiration date must apply for recertification under the general permit at least 90 days prior to its expiration date. Kathleen Rosow December 18, 2006 IX PUBLIC NOTICE — 12/22/06 The permit was sent to public notice on December 22, 2006. A public meeting was requested, and was held on February Z 2007. Nurnerous comments were received on the draft permit. Responses to those comments, and a summary of changes made to the draftpermit, are in a separate document entitled "Division Response To Public Comments." The permit will be sent to a second public notice on March 23, 2007. Any changes resulting front the second public notice will be summarized in the rationale, Kathleen Rosow March 22, 2007 X PUBLIC NOTICE — 3/23/07 The permit was sent to public notice for a secondrune on March 23, 2007, Numerous comments were received on the second draftpermit, Responses to those continents, and a summary of the additional changes made to the draft permit, are contained in a separate document entitled "Division Response To Public Comments Part II", This document is part of. the rationale. Any changes based on the Division response are incorporated into the rationale and permit. The response document is available online al or by entailing cdphe. e. co. us, or by calling the Division at 303-692-3517. Kathleen Rosow May 31, 2007 COLORADO DEPARTMENT OF TRANSPORTATION STORMWATER FIELD INSPECTION REPORT - ACTIVE CONSTRUCTION (1) Project Mame: (2) Project Contractor: (3) Erosion Control Supervisor/SWMP Administrator: (4) CDOT Project Engineer/Representative: (5) Inspector(s) (Name and Title): (6) CDOT Project Number, (7) Project Code (Sub Account #): (8) CDPS-SCP Certifcation#: (9) CDOT Region: (10) Date of Project Inspection: (11) Weather at Time of Inspection: - - (12) REASON FOR INSPECTION l EXCLUSION Routine Inspection: (minimum every 14 Calendar Days) ❑ Runoff Event: (Post -storm event inspections must be conducted within 24 hours after the end of any precipitation or snowmelt event that causes surface erosion. If no construction activities will occur following a storm event, post -storm event inspections shall be conducted prior to re -commencing construction activities, but no later than 72 hours following the storm event. The occurrence of any such delayed inspection must be documented in the inspection record.) Routine inspections still must be conducted every 14 calendar days. Storm Start Date: Approximate End Time of Storm (hrs): O Third Party Request: ❑ Winter Conditions Inspections Exclusion: Inspections are not required at sites where construction activities are temporarily halted, snow cover exists over the entire site for an extended period, and melting conditions posing a risk of surface erosion do not exist. This exception is applicable gnly during the period where melting conditions do not exist, and applies to the routine 14 -day inspections, as well as the post -storm -event inspections. If visual inspection of the site verifies that at of these conditions are satisfied, document the conditions in section 18 (General Notes) and proceed to section 19 (Inspection Certification), Documentation must include: dates when snow cover occurred, date when construction activities ceased, and date when melting conditions began. tEl Other: (13) SWMP MANAGEMENT (14) CURRENT CONSTRUCTION ACTIVITIES. 15) BMPs ON SITE AT TIME OF INSPECTION `See Inspection Re on Instructions for more detail. Yes No NA Estimate of disturbed area at the time of the inspection: Acres (a) Is the SWMP notebook located on site? 0 0 (a) EROSION CONTROL BMPs ON SITE (b) Are changes to the SWMP documents noted and approved? ■ 0 ■ (c) Are the inspection reports retained in the SWMP notebook? 0 _ ❑ 0 (d) Are corrective actions from the last inspection completed? 0 0 ❑ (e) Is a Spill Prevention Control and Countermeasure Plan retained at the project site? 0 ■ ■ 0 (f) Is a list of potential pollutants retained at the site? • ■ Inlet Protection* 15) BMPs ON SITE AT TIME OF INSPECTION `See Inspection Re on Instructions for more detail. page 1 of 5 COOT Form 01176 3!(IR In SWMP Used Not Needed at this time In SWMP Used Nat Needed at this time (a) EROSION CONTROL BMPs ON SITE (b) SEDIMENT CONTROL BMPs ON SITE Seeding 0 ❑ 0 Stabilized Const. Entrance II 0 ❑❑❑❑❑❑ I MulchinglMulch Tackifer ■ ■ 0 Sediment Trap ■ 0 Soil Binder Inlet Protection* 1 ■ ■ ■ ■ Soil Retention Blankets 0 0 0 Sediment Basin 0 0 Embankment Protector* 0 ■ 1 Perimeter Control* ❑ • Grading Techniques* 0 ❑ ❑ Other. 0 fi Berm/Diversion 0 0 0 (d) MATERIALS HANDLING, SPILL PREVENTION, WASTE MANAGEMENT Check Dams' ■ ■ IN AND GENERAL POLLUTION PREVENTION Outlet Protection* 0 Stockpile Management* 0 0 0 ■ ■ Other: 0 0 Materials Management* 0 ■ ■ 1 CI ■ (c) BMPs FOR SPECIAL CONDITIONS Concrete Waste Management" ■ ■ Saw Water Management` 0 [1 Solid Waste/Trash Management 0 ■ ■ Dewatering Structure 0 ❑ ■ 0 Temp. Stream Crossing ❑ 0 0 Street Sweeping ❑ ■ Clear Water Diversion 0 0 ■ Sanitary Facility* ❑ ❑ LI Sensitive Area Fencing 0 0 1 Vehicle and Equip. Management 0 ■ 1 Other: 0 ❑ Other: 0 0 IA ■ page 1 of 5 COOT Form 01176 3!(IR (16) CONSTRUCTION SITE ASSESSMENT & CORRECTIVE ACTIONS "Off site Pollutant Discharges are a Violation of the Permit and Reason for Immediate Project Suspension" The construction site perimeter. all disturbed areas, material and/or waste storage areas that are exposed to precipitation, discharge locations, and locations where vehicles access the site shall be inspected for evidence of. or the potential for, pollutants leaving the construction site boundaries, entering the stormwater drainage system. or discharging to state waters. If there is evidence of sediment or other pollutants discharging from the site, see section 17 (Construction Site Assessment). All erosion and sediment control practices identified in the SWMP shall be evaluated to ensure that they are maintained and operating correctly. Identify the condition of the BMP, using more than one letter if necessary: (1) Incorrect Installation; (M) Maintenance is needed; (F) BMP failed to operate; (A) Additional BMP is needed; (R) Remove BMP. Keep copies of this blank page for additional room if needed. Continuous maintenance is required on all BMPs. BMPs that are not operating effectively, have proven to be inadequate, or have failed must be addressed as soon as possible, immediately in most cases. Location BMP Condition Comments: — Date Completed & Initials —. — - Description of Corrective Action and Preventative Measure Taken page 2 ors CDOT Form #1176 3108 (17) CONSTRUCTION SITE ASSESSMENT—OFF SITE POLLUTANT DISCHARGES ARE A VIOLATION OF THE PERMIT AND REASON FOR IMMEDIATE PROJECT SUSPENSION" (a) Is there evidence of discharge of sediment or other pollutants from the site? ❑ Yes ❑ No *If yes, explain the discharge and the corrective actions in section '16 (Construction Site Assessment & Corrective Actions) or section 18 (General Notes). (b) Has sediment or other pollutants discharging from the site reached state waters? [] Yes ❑ No If yes, see subsection 208.03(c) and Part 11 A.2 and 3 of the permit for reporting requirements. (18) GENERAL NOTES (19) INSPECTION 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. lam aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations, Contractor's Erosion Control SupervisorfSWMP Administrator (Signature Required) Date CDOT Project Engineer/CDOT Designee (Signature Required) Date: (20) COMPLIANCE CERTIFICATION Corrective action(s) has been taken, or where a report does not identify any incidents requiring corrective action, the report shall contain a signed statement indicating the site is in compliance with the permit to the best of the signer's knowledge and belief, Contractor's Erosion Control Supervisor/VA/MP Administrator (Signature Required) Date: CDOT Project Engineer/CDOT Designee (Signature Required) Date: page 3 of 5 CDO'T Form #1176 3/08 Stormwater Management Field Inspection Report Instructions State waters are defined to be any and all surface and subsurface waters which are contained in or flow through the state, including, streams, rivers, lakes, drainage ditches, storm drains, ground water, and wetlands, but not including waters in sewage systems, waters in treatment works or disposal systems, waters in potable water distribution systems, and all water withdrawn for use until use and treatment have been completed. (Per subsection 107.25 and 25-8-103 (19) CRS) (3) Erosion Control Supervisor/SWMP Administrator: Indicate the name of the individual responsible for implementing, maintaining and revising the SWMP. (4) CDOT Project Engineer/Representative: Indicate the name of the CDOT representative performing the inspection with the ECS/SWMP Administrator. This person should be the Project Engineer or an authorized representative. (9) CDPS-SCP Certification #: Indicate the Colorado Discharge Permit System (CDPS) Stormwater Construction Permit (SCP) (for Stormwater Discharges Associated with Construction Activities) certification number, issued by CDPHE, for the project which the report is being completed. Certification number can be found on the first page of the SCP. (12) Reason(s) for Inspection/ Exclusion: indicate the purpose for the inspection or exclusion. These inspections are required to comply with the COOT Specifications and the CDPS-SCP. ® Routine Inspections. These inspections are required at least every 14 calendar days during active construction. Suspended projects require the 14 calendar day inspection unless snow cover exists over the entire site for an extended period of time, and melting conditions do not exist (see, Winter Conditions inspections Exclusions). U Runoff Event Inspection for Active Sites. See page 1 for definition. ❑ Third Party Request. Indicate the name of the third party requesting the inspection and, if known, the reason the request was made. D Winter Conditions Inspections Exclusions. See page 1 for definition. An inspection does not need to be completed, but use this form to document the conditions that meet the Exclusion. U Other. Specify any other reason(s) that resulted in the inspection. (13) SWMP Management: Review the SWMP records and documents and use a 1 to answer the question. To comply with CDOT Standard Specifications and the CDPS-SCP, all of the items identified must be adhered to. if No is checked, document the reason and indicate the necessary corrective action in section 16 (Construction Site Assessment & Corrective Actions). If NA is checked, indicate why in the space provided or indicate in section 18 (General Notes). (a) is the SWMP notebook located on site? A copy of the SWMP notebook must be retained on site, unless another location, specified by the permit, is approved by the Division. (b) Are changes to the SWMP documents noted and approved? indicate all changes that have been made to any portion of the SWMP notebook documents during construction. Changes shall be dated and signed at the time of occurrence. Amendments may include items listed in subsection 208.03(c). (c) Are the inspection reports retained in the SWMP notebook? The ECS/Engineer shall keep a record of inspections. Inspection reports must identify any incidents of non-compliance with the terms and conditions of the CDOT specifications or the CDPS-SCP. Inspection records must be retained for three years from expiration or inactivation of permit coverage. (d) Are corrective actions from the last inspection completed? Have corrective actions from the last inspection been addressed? Is a description of the corrective action(s), the date(s) of the corrective action(s), and the measure(s) taken to prevent future violations (including changes to the SWMP, as necessary) documented? (e) Is a Spill Prevention Control and Countermeasure (SPCC) Plan retained in the SWMP notebook? Subsection 208.051(c) requires that a SPCC plan be developed and implemented to establish operating procedures and that the necessary employee training be provided to minimize accidental releases of pollutants that can contaminate stormwater runoff. Records of spills, leaks or overflows that result in the discharge of pollutants must be documented and maintained. Information that should be recorded for all occurrences include the time and date, weather conditions, reasons for spill, etc. Some spills may need to be reported to the Water quality Control Division immediately. (f) Is a list of potential pollutants retained at the site? Subsection 107.25(b)5 requires the Erasion Control Supervisor to identify and describe all potential pollutant sources, including materials and activities, and evaluate them for the potential to contribute pollutants to stormwater discharge. (14) Current Construction Activities: Provide a short description of the current construction activities/phase at the project site; include summary of grading activities, instaliation of utilities, paving, excavation, landscaping, etc. - Estimate the acres of disturbed area at the time of the inspection. Include clearing, grading, excavation activities, areas receiving overburden (e.g. stockpiles), demolition areas and areas with heavy equipment/vehicle traffic, installation of new or improved haul roads and access roads, staging areas, borrow areas and storage that will disturb existing vegetative cover. (15) BMPs On Site at Time of Inspection: Indicate the BMPs that are installed on-site at the time of inspection. All BMP details (e.g., Standard Plan M-208-1) shall be included with the SWMP documents. page 4 or 5 CDOT Form #1176 3/08 Stormwater Management Field Inspection Report instructions (continued) BMPs In SWMP/Used/Not Needed at this Time. This section can be used as follows. Ei If the BMP is required by the SWMP and implemented, indicate by placing a ✓ in both the "In SWMP" and "Used' columns. Q If the BMP is required by the SWMP, but not implemented, indicate by placing a 1 in the "In SWMP" and `Not Needed at this Time" columns. (a) Erosion Control BMPs On Site - Embankment Protector (e.g., temporary slope drains, open -chute drains, etc.) - Grading Techniques (e.g., vertical tracking, scarifying, or disking the surface on the contour, etc.) - Check Dams (e.g., rock check, erosion logs, erosion bales, silt berms, etc.) - Outlet Protection (e.g., riprap, erosion log around top of headwall, etc.) (b) Sediment Control BMPs On Site - inlet Protection (e.g., erosion logs, erosion bales, sand bags, gravel bags, etc.) - Perimeter Control (e.g., silt fence, erosion logs, berms, etc.) (d) Materials Handling, Spill Prevention, Waste Management and General Pollution Prevention - Stockpile Management. Stockpiles shall be located away from sensitive areas. All erodible stockpiles (including topsoil) shall be contained by silt fence, berms or other sediment control devices throughout construction (also see subsection 208.052). - Materials Management. Material that could contribute pollutants to storrnwater shall have secondary containment or other equivalent protection (also see subsection 208.051). - Concrete Waste Management. All concrete residue shall be contained in a signed structure as designed per subsection 208,02(k) and subsection 208.05(n). It shall be located a minimum of 50 feet from state waters. - Saw Water Containment (e.g., pick-up broom or vacuum). Street washing is not allowed. - Sanitary Facility, Temporary sanitary facilities shall be located 50 feet away from drainage ways, inlets, receiving waters, and located away from areas of high traffic, and areas susceptible to flooding or damage by construction equipment. (16) Construction Site Assessment & Corrective Actions: inspect the construction site and indicate where BMP feature(s) identified in section 15 (BMPs On Site at Time of Inspection), require corrective action. Erosion and sediment control practices identified in the SWMP shall be evaluated to ensure that they are operating correctly. - Location. Site location (e.g., project station number, mile marker, intersection quadrant, etc.). - BMP. Indicate the type of BMP at this location that requires corrective action (e.g., silt fence, erosion logs, soil retention blankets, etc.). - Condition. Identify the condition of the BMP, using more than one letter (identified in section 16) if necessary. - Description of Corrective Action and Preventative Measure Taken. Provide the proposed corrective action needed to bring the area or BMP into compliance. Once corrective actions are completed, state the measures taken to prevent future violations and ensure that the BMPs are operating correctly, including the required changes made to the SWMP. - Date Completed & Initials. Date and initial when the corrective action was completed and the preventative measure statement finished. (17) Construction Site Assessment: Was there any off site discharge of sediment at this site since the last inspection? (a) Is there evidence of discharge of sediment or other pollutants from the site? Off site pollutant discharges are a violation of the permit. The construction site perimeter, all disturbed areas, material and/or waste storage areas that are exposed to precipitation, discharge locations, and locations where vehicles access the site shall be inspected for evidence of, or the potential for, pollutants leaving the construction site boundaries, entering the storrnwater drainage system, or discharging to state water. (b) Has sediment or other pollutants discharging from the site reached state waters? Off site pollutant discharges are a violation of the permit. If off site discharge has occurred, explain the discharge and the corrective actions in section 16 (Construction Site Assessment & Corrective Actions) or section 18 (General Notes). (18) General Notes: Indicate any additional notes that add detail to the inspection; this may include positive practices noted on the project. (19) Inspection Certification: In accordance with Peal, F. t.c of the CDPS-SCP, all reports for submittal shall be signed and certified for accuracy. (20) Compliance Certification: In accordance with Part 1, D.6.b.2.viii of the CDPS-SCP, compliance shall be certified through signature. pave 5of5 ('001 Form 41176 31U$ COLORADO DEPARTMENT OF TRANSPORTATION STORMWATER FIELD INSPECTION REPORT - POST CONSTRUCTION ( 1) Project Name: (2) Maintenance Patrol/Representative: (3) SWMP Administrator: (4) inspectors) (Name and Title): (5) Weather at Time of Inspection: (6) CDOT Project Number: (7) Project Code (Sub Account #): (8) CAPS -SGP Certitication#: (9) CDOT Region: (10) Date of Project Inspection: 11) REASON FOR INSPECTION / EXCLUSION J 30 Calendar day: J Third Party Request: ❑ Winter Conditions Inspections Exclusion: Inspections are not required at sites where snow cover exists over the entire site for an extended period, and melting conditions posing a risk of surface erasion do not exist. This exception is applicable only during the period where melting conditions do not exist. 11 visual Inspection of the site verifies that ail at these conditions are satisfied, document the conditions in section 17 (General Notes) and proceed to section 18 (inspection Certification). Documentation must Include: dates when snow cover occurred, and date when melting conditions began. J Other: (12) SWMP MANAGEMENT (13) DESCRIPTION OF PROJECT: (14) BMPs ON SITE AT TIME OF INSPECTION "See Inspection Report Instructions for more detail. Yes No NA Comments: Description of Corrective Action and Preventative Measure Taken (Include Picture #) (a) Are changes to the SWMP documents noted and approved? Installed Check Dams' Embankment Protector Sediment Basin/ Detention Pond (b) Are the 30 day inspection reports retained with the SWMP notebook? Seeding Mulching/Mulch Tackifler Soil Retention Blankets ❑ ID CJ Inlet Protection' Outlet Protection" Other: (c) Are corrective actions from the last inspection completed? Other: Other: lather: ❑ LJ LI (15] CONSTRUCTION SITE ASSESSMENT & CORRECTIVE ACTIONS "'Off site Pollutant Discharoes are a Violation of the Permit" (14) BMPs ON SITE AT TIME OF INSPECTION "See Inspection Report Instructions for more detail. The construction site perimeter and revegetated areas that are exposed to precipitation shall be inspected for erosion and the evidence of, or the potential for, pollutants leaving the CDOT right of way, entering the stormwater drainage system, or discharging to state waters. If there is evidence of sediment or other pollutants discharging from the site, see section 16 (Construction Site Assessment). All erosion and sediment control practices identified in the SWMP shall be evaluated to ensure that they are maintained and operating correctly. Identify the condition of the BMP, using more than one letter if necessary: (1) Incorrect Installation; (M) Maintenance is needed; (F) OMP failed to operate; (A) Additional BMP is needed; (R) Remove BMP. Keep copies of this blank page for additional room if needed. Continuous maintenance is required on all BMPs. BMPs that are not operating effectively, have proven to be inadequate, or have failed must be addressed as soon as possible, immediately in most cases. Installed BMP Installed Comments: Description of Corrective Action and Preventative Measure Taken (Include Picture #) Installed Installed Check Dams' Embankment Protector Sediment Basin/ Detention Pond ID ❑ 0 Seeding Mulching/Mulch Tackifler Soil Retention Blankets ❑ ID CJ Inlet Protection' Outlet Protection" Other: LI ❑ J Other: Other: lather: ❑ LJ LI (15] CONSTRUCTION SITE ASSESSMENT & CORRECTIVE ACTIONS "'Off site Pollutant Discharoes are a Violation of the Permit" The construction site perimeter and revegetated areas that are exposed to precipitation shall be inspected for erosion and the evidence of, or the potential for, pollutants leaving the CDOT right of way, entering the stormwater drainage system, or discharging to state waters. If there is evidence of sediment or other pollutants discharging from the site, see section 16 (Construction Site Assessment). All erosion and sediment control practices identified in the SWMP shall be evaluated to ensure that they are maintained and operating correctly. Identify the condition of the BMP, using more than one letter if necessary: (1) Incorrect Installation; (M) Maintenance is needed; (F) OMP failed to operate; (A) Additional BMP is needed; (R) Remove BMP. Keep copies of this blank page for additional room if needed. Continuous maintenance is required on all BMPs. BMPs that are not operating effectively, have proven to be inadequate, or have failed must be addressed as soon as possible, immediately in most cases. Location BMP Condition Comments: Description of Corrective Action and Preventative Measure Taken (Include Picture #) Date Completed & Initials — 1 page 1 of 1 CDOT Form 5/1177 108 (15) CONSTRUCTION SITE ASSESSMENT & CORRECTIVE ACTIONS (continued) Location BMP Condition Comments: Description of Corrective Action and Preventative Measure Taken (Include Picture #) Dale Completed & Initials (16) CONSTRUCTION SITE ASSESSMENT:"OFF SITE POLLUTANT DISCHARGES AREA VIOLATION OF THE PERMIT`" (a) Is there evidence of discharge of sediment or other pollutants from the site? U Yes ] No *If yes, explain the discharge and the corrective actions in section 15 (Construction Site Assessrnent & Corrective Actions) or section 17 (General Notes). (b) Has sediment or other pollutants discharging from the site reached state waters? U Yes U No "if yes, see subsection 208.03(c) and Part It A.2 and 3 of the permit for reporting requirements. (c) Is the amount of vegetation 70% of pre-existing vegetative cover? "!f yes, notify the appropriate Region Environmental contact. UYes LI No (17) GENERAL NOTES (18) INSPECTION 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. GOT MaintenancelSWMP Administrator (Signature Required) I Date: 19) COMPLIANCE CERTIFICATION Corrective action(s) has been taken. or where a report does not identity any Incidents requiring corrective action, the report shall contain a signed statement indicating the site is in compliance with the permit to the best of the s'gner's knowledge and belief. CDOT MaintenancelSWMP Administrator (Signature Required) Date: page 2 of 4 CDOT Form #1177 3108 Stormwater Management Field Inspection Report Instructions State waters are defined to be any and all surface and subsurface waters which are contained in or How through the state, including, streams, rivers, lakes, drainage ditches, storm drains, ground water, and wetlands, but not including waters in sewage systems, waters in treatment works or disposal systems, waters in potable water distribution systems, and all water withdrawn for use until use and treatment have been completed. (Per subsection 10725 and 25-8-103 (19) CRS) (3) SWMP Administrator: Indicate the name of the individual(s) responsible for implementing, maintaining, and revising SWMP. (8) CDPS-SCP Certification #: Indicate the Colorado Discharge Permit System (CDPS) Stormwater Construction Permit (SCP) (for Stormwater Discharges Associated with Construction Activities) certification number, issued by CDPHE, for the project which the report Is being completed. Certification number can be found on the first page of the SCP. (11) Reason(s) for inspection or Exclusion: Indicate the purpose for the inspection or exclusion. These inspections are required to comply with the CDOT Specifications and the CDPS-SCP. U 30 Calendar Day. For sites where construction activities are completed. The permittee shall make a thorough inspection of the stormwater management system every thirty days; post -storm event inspections are not required. ❑ Third Party Request. indicate the name of the third party requesting the inspection and, if known, the reason the request was made. U Winter Conditions Inspections Exclusions. See Page 1 for definition. An inspection does not need to be completed, but use this form to document the conditions that meet the Exclusion. ❑ Other. Specify any other reason(s) that resulted in the inspection. (12) SWMP Management: Review the SWMP records and documents and use a ✓ to answer the question. To comply with CDOT Standard Specifications and the CDPS-SCP, al! of the items identified must be adhered to. If No is checked, document the reason and indicate the necessary corrective action in section 15 (Construction Site Assessment & Corrective Actions). If NA is checked, indicate why in the space provided or indicate in section 17 (General Notes). (a) Are changes to the SWMP noted and approved on the plans? Indicate all changes that have been made to any portion of the SWMP notebook documents during inspections. Changes shall be dated and signed at the time of occurrence. Amendments may include items listed in subsection 208.03(c). (b) Are 30 day inspection reports retained with the SWMP? The SWMP Administrator shall keep a record of inspections. Inspection reports must identify any incidents of non-compliance with the terms and conditions of CDOT specifications or the CDPS-SCP. Inspection records must be retained for three years from expiration or inactivation of permit coverage. (c) Are corrective actions from the last inspection completed? Have corrective actions from the last inspection been addressed? Is a descrip- tion of the corrective action(s), the date(s) the corrective action(s) was taken, and measure(s) taken to prevent future violations (including changes to the SWMP, as necessary) documented? (13) Description of Project Activities: Provide a short description of the original construction project. (14) BMPs On Site at Time of inspection: Indicate the BMPs that are installed on-site at the time of inspection. Indicate by placing a ✓ in the Installed column. All BMP details (e,g., Standard Plan M-208-1) shall be included with the SWMP documents. -Check Dams (e.g., rock check, erosion logs, erosion bales, silt berms, etc.) - Embankment Protector (e.g., slope drains, open -chute drains, etc.) - Inlet Protection (e.g., erosion logs, erosion bales, sand bags. gravel bags, etc.) -Outlet Protection (e.g., riprap. erosion log around top of headwall, etc.) -Other: Provide a description of a BMP implemented on site that is not listed above. (15) Construction Site Assessment & Corrective Actions: Inspect the construction site and indicate where BMP feature(s), identified in section 14 (BMPs On Site at Time of Inspection), require corrective action. Erosion and sediment control practices identified in the SWMP shall be evaluated to ensure that they are operating correctly. - Location. Site location (e.g., project station number, mile marker, intersection quadrant, etc.) - BMP. Indicate the type of BMP at this location that requires corrective action (e.g., silt fence, erosion logs, soil retention blankets, etc.). - Condition. identify the condition of the BMP, using more than one letter (identified in section 15) if necessary. - Description of Corrective Action and Preventative Measure Taken. Provide the proposed corrective action needed to bring the area or BMP into compliance. Once corrective actions are completed, state the measures taken to prevent future violations and ensure that the BMPs are operating correctly, including the requisite changes made to the SWMP. If pictures were taken, indicate the photo number (if in digital format). - Date Completed & Initials. Date and initial when the corrective action was completed and the preventative measure statement finished. It confirmation that the item was completed is sent via email, print out and attach it to this inspection form. (16) Construction Site Assessment: Was there any off site discharge of sediment at this site since the last inspection? (a) Is there evidence of discharge of sediment or other pollutants from the site? Off site pollutant discharges are a violation of the permit. The construction site perimeter, all areas exposed to precipitation, and discharge locations shall be inspected for evidence of, or the potential for, pollutants leaving the construction site boundaries, entering the stormwater drainage system, or discharging to stale waters. (b) Has sediment or other pollutants discharging from the site reached state waters? Off site pollutant discharges are a violation of the permit. If off site discharge has occurred, explain the discharge and the corrective actions in section 15 (Construction Site Assessment & Corrective Actions) or section 17 (General Notes). (c) Is the amount of vegetation 70% of pre-existing cover? Has uniform vegetative cover been established with a density of at least 70 percent of pre -disturbance levels? If yes, the permit may be inactivated, notify the Region Environmental contact for verification. (17) General Notes: Indicate any additional notes that add detail to the inspection, this may include positive practices noted on the project. (18) Inspection Certification: In accordance with Part I, F.1 .c of the CDPS-SCP, all reports for submittal shall be signed and certified for accuracy. (19) Compliance Certification: In accordance with Part I, D.8.b.2.viii of the CDPS-SCP, compliance shall be certified through signature_ pages of 4 CDOT Fnrm *1177 3i08 (15) CONSTRUCTION SITE ASSESSMENT & CORRECTIVE ACTIONS (continued) '"Off site Pollutant Discharges are a Violation of the Permit" The construction site perimeter and revegetated areas that are exposed to precipitation shall be inspected for erosion and the evidence of, or the potential for, pollutants leaving the CBOT right of way, entering the stormwater drainage system, or discharging to state waters. If there is evidence of sediment or other pollutants discharging from the site, see section 16 (Construction Site Assessment). All erosion and sediment control practices identified in the SWMP shall be evaluated to ensure that they are maintained and operating correctly. Identity the condition of the BMP, using more than one letter it necessary; (I) incorrect Installation; (M) Maintenance is needed; (F) BMP tailed to operate; (A) Additional BMP is needed; (R) Remove BMP. Keep copies of this blank page for additional room if needed. Continuous maintenance is required on all BMPs. BMPs that are not operating effectively, have proven to be inadequate, or have failed must be addressed as soon as possible, immediately in most cases. Location BMP Condition Comments: Description of Corrective Action and Preventative Measure Taken (Include Picture #) Date Completed & Initials I page4 0f 4 qrm P1177 3.,08 APPENDIX I NOTICE OF TERMINATION (NOT) STATE OF COLORADO Dedicated to prolecling and improving the health and environment of the people of Colorado 4300 Cherry Creek Dr. S. Denver, Cotorado 80246-1530 Phone (303) 692-2000 TDD Line (303) 691-7700 Located in Glendale, Cotorado http://www.cdphe.stateco.us Colorado Water Quality Control Division Notice of Termination Construction Stormwater Inactivation Notice www.coloradowaterpermits.com Colorado Department of Public Health and Environment Print or type all information. All items must be filled out completely and correctly. If the form is not complete, it will be returned. All permit terminations dates are effective on the date approved by the Division, MAIL ORIGINAL FORM WITH Ilei SIGNATURES TO THE FOLLU'OANC ADDRESS; Colorado Dept of Public. Health and Environment Water Quality Control Division 4300 Cherry Creek Dr South, WQCD-P-B2 Denver, CO 80246-1530 CA1(CD OH EMAILED FORMS WILL NOT BE ACCEPTED, • PART A. IDENTIFICATION OF PERMIT Please write the permit certification number to be terminated Permit Certification Number (four digits, not "0000"): COR03 • PART B. PERMITTEE INFORMATION Company Name Mailing Address City State Zip code Legal Contact Name Phone number Title Email • PART C. FACILITY/PROJECT INFORMATION Facility/Project Name Location (address) City County Zip code Local Contact Name Phone number Title Email Page 1 of 2 form last revised May 2010 COLORADO WATER QUALITY CONTROL DIVISION NOTICE OF TERMINATION www,coloradowateroermits.com PART D. TERMINATION VALIDATION CRITERIA One of the criteria 4,2, or 3) below must be met, the appropriate box checked, and the required additional information provided. Part E includes a certification that the criteria indicated has been met. 1: FINALLY STABILIZED OR CONSTRUCTION NOT STARTED -The permitted activities covered under the certification listed in Part A meet the requirements for FINAL STABILIZATION in accordance with the permit, the Stormwater Management Plan, and as described below. This criterion should also be selected if construction was never started and no land was disturbed, and an explanation of this condition provided in the description below. Final stabilization is reached when: all ground surface disturbing activities at the site have been completed including removal of all temporary erosion and sediment control measure, and uniform vegetative cover has been established with an individual plant density of at least 70 percent of predisturbance levels, or equivalent permanent, physical erosion reduction methods have been employed. REQUIRED - Describe the methods used to meet the final stabilization c described above (include additional pages if necessary) D 2: ALTERNATIVE PERMIT COVERAGE OR FULL REASSIGNMENT - All ongoing construction activities, including all disturbed areas, covered under the permit certification listed in Part A have coverage under a separate COPS stormwater construction permit, including the permit certification issued when Division's Reassignment Form was used by the permittee to reassign all areas/activities. REQUIRED — Provide the permit certification number covering the ongoing activities: CORQ3 © 3: PERMITTEE 15 NO LONGER THE OWNER/OPERATOR of the site and all efforts have been made to transfer the permit to appropriate parties. Please attach copies of registered mail receipt, letters, etc. One of the three criteria above MUST BE CHECKED and the required information for that criterion provided, or this form will not be processed and the permit will remain active. • PART E. CERTIFICATION SIGNATURE (Required for all Termination Requests) understand that by submitting this notice of inactivation, I am no longer authorized to discharge stormwater associated with construction activity by the general permit. I understand that discharging pollutants in stormwater associated with construction activities to the waters of the State of Colorado, where such discharges are not authorized by a COPS permit, is unlawful under the Colorado Water Quality Control Act and the Clean Water Act. certify under penalty of law that I have personally examined and am familiar with the information submitted herein, and 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 and imprisonment. (See 18 U.S.0 1001 and 33 U.S.C. 1319.) I also certify that i am a duly authorized representative of the permittee named in Part B. Signature of Legally Responsible Party Date Signed Name (printed) Title Signatory requirements: This form shall he signed, dated, and certified for accuracy by the permittee in accordance with the following criteria: 1. In the case of a corporation, 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 operation from which the discharge described herein originates; 2. in the case of a partnership, by a general partner; 3. In the case of a sole proprietorship by the proprietor; 4. In the case of a municipal, state, or other public operation, by wither a principal executive officer, ranking elected official, or other duly authorized employee. Page Z of 2 form last revised May 2010 APPENDIX J NON NUMERIC EFFLUENT LIMITATION GUIDELINE BEST MANAGEMENT PRACTICES (BMP'S) - STANDARD PLAN NO. M-208-1 PROVIDED BY THE COLORADO DEPARTMENT OF TRANSPORTATION SIGN LIMIT OF BERN �PF PF 1 PF H9' MIN. 15' MIN. _ EXCAVATED AND CONTAINMENT AREA 24" MIN. —i CONCRETE WASHOUT RAMP PF k3:1 18" MIN. TRUCK ACCESS PLAN VIEW TEMPORARY BERM 2:1 (TYP.) PF PF I� PF 4' MIN. FENCE I 5' MIN. EXISTING GROUND EXCAVATED AREA MAXIMUM STORAGE IS 2/3 OF VOLUME AREA SECTION A -A NOTES: 1. EROSION BALES MAY BE USED AS AN ALTERNATIVE FOR THE BERM. 2. A FENCE (PLASTIC) CONFORMING TO SUBSECTION 607.02 SHALL BE INSTALLED AROUND THE CONCRETE WASHOUT AREA, EXCEPT AT THE OPENING. 3. THE CONCRETE WASHOUT SIGN SHALL HAVE LETTERS AT LEAST 3 INCHES HIGH AND CONFORM TO SUBSECTION 630.02. CONCRETE WASHOUT STRUCTURE FENCE (PLASTIC) ----f EXISTING GROUND EXISTING GROUND B AGGREGATE EXISTING PAVEMENT B PLAN VIEW *SHALL EXTEND FULL WIDTH OF INGRESS AND EGRESS OPERATION. 70' MIN. GEOTEXTILE EROSION CONTROL (CLASS 2) ELEVATION SECTION EXISTING PAVEMENT (DEPTH VARIES) EXISTING GROUND GEOTEXTILE EROSION CONTROL (CLASS 2) SECTION B -B NOTES: 1. AGGREGATE FOR THE CONSTRUCTION ENTRANCE SHALL CONFORM TO SUBSECTION 208.02 (K). 2. THE CONTRACTOR SHALL PROTECT CURB AND GUTTER THAT CROSSES THE ENTRANCE FROM DAMAGE. PROTECTION OF THE CURB AND GUTTER WILL NOT BE PAID FOR SEPARATELY, BUT SHALL BE INCLUDED IN THE WORK. VEHICLE TRACKING PAD Computer File Information Creation Date: 07/04/12 Initials: DD Last Modification Date: 07/04/12 Initials: LTA Full Path: www.coloradodot.info/business/designsupport Drawing File Name: 2080101012.dgn CAD Ver.: MicroStation V8 Scale: Not to Scale Units; EnglishQED GED c Sheet Revisions Date: Comments Colorado Department of Transportation 4201 East Arkansas Avenue Denver, Colorado 80222 Phone: (303) 757-9083 Fax: (303) 757-9820 IIPAMBIATTAIRREMIN Project Development Branch DD/LTA TEMPORARY EROSION CONTROL STANDARD PLAN NO. M-208-1 Issued By: Project Development Branch on July 4, 2012 Sheet No. 1 of 12 A A USE TWO WOOD STAKES AT ALL EROSION LOG ENDS OR JOINTS USE A STAKE EVERY 24" AND CONTINUE ALTERNATE ORIENTATION THROUGHOUT THE LENGTH OF THE EROSION LOG EROSION LOG PLAN VIEW AP„STAKES Tb F IMAT�LY gp, (� � TNER WETLANDS OR FEATURES REQUIRING PROTECTION SECTION A -A TYPICAL STAKE INSTALLATION )277y/////7/7/4 / / // FLOW V.=11 FLOW/77/ ■I■ / / oi:/// o //////////t7 r PLAN VIEW B SECTION B -B NOTE: LOCATE EROSION LOGS AT THE OUTSIDE EDGE OF THE CONCRETE APRON. EROSION LOG FILTER AT DROP INLET EROSION LOG APPLICATIONS NOTES 1. EROSION LOGS SHALL BE EMBEDDED 2 INCHES INTO THE SOIL. 2. STAKES SHALL BE EMBEDDED TO A MINIMUM DEPTH OF 12 INCHES. 3. EROSION LOGS SHALL BE TIGHTLY ABUTTED WITH NO GAPS. POINT A • POINT 5 POINT A EROSION LOG PLAN VIEW POINTS A SHALL BE HIGHER THAN POINT B. ELEVATION EROSION LOG DITCH INSTALLATION Computer File Information Creation Date: 07/04/12 Initials: DD Last Modification Date: 07/04/12 Initials: LTA Full Path: www.coloradodot.info/business/designsupport Drawing File Name: 2080102012.dgn CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English GED GEED CED Sheet Revisions Date: Comments Colorado Department of Transportation 4201 East Arkansas Avenue Denver, Colorado 80222 Phone: (303) 757-9083 Fax: (303) 757-9820 Project Development Branch DD/LTA TEMPORARY EROSION CONTROL STANDARD PLAN NO. M-208-1 Issued By: Project Development Branch on July 4, 2012 Sheet No. 2 of 12 N. ".* ."*\4• \IN./ \ f'�\ i 4, 4' \r ',14 4" rzrz,,,,,,,,i6.7:77. ... ri • wwkl": - 2" 2:0ZOZOMMRWil ISOMETRIC VIEW STAKES APPROXIMATELY 90° TO EACH OTHER (TYP.) \\ 5' TO 10' SECTION A -A NOTES: 1. EROSION LOGS USED AT TOE OF SLOPE SHALL BE PLACED 5 TO 10 FEET BEYOND TOE OF SLOPE TO PROVIDE STORAGE CAPACITY. 2. EROSION LOGS SHALL BE PLACED ON THE CONTOUR, WITH ENDS FLARED UP SLOPE. EROSION LOG TOE OF SLOPE PROTECTION FLOW EROSION LOGS SHALL BE TIGHTLY ABUTTED WITH NO GAPS (TYP.) PLAN VIEW FLOW EROSION LOG f I 4 SECTION B -B EROSION LOG CULVERT INLET PROTECTION EROSION LOG APPLICATIONS FLOW EROSION LOG CULVERT OUTLET PROTECTION Computer File Information Creation Date: 07/04/12 Initials: DD Last Modification Date: 07/04/12 Initials: LTA Full Path: www.coloradodot.info/business/designsupport Drawing File Name: 2080103012.dgn CAD Ver.: MicroStation V8 Scale: Not to Scale Units; EnglishQED GEED c Sheet Revisions Date: Comments Colorado Department of Transportation 4201 East Arkansas Avenue Denver, Colorado 80222 Phone: (303) 757-9083 Fax: (303) 757-9820 IIPARBRIFIRMINIRM Project Development Branch DD/LTA TEMPORARY EROSION CONTROL STANDARD PLAN NO. M-208-1 Issued By: Project Development Branch on July 4, 2012 Sheet No. 3 of 12 2' X X X X X X X X 7' 6" TYPICAL STAPLE PATTERN FOR CHANNEL APPLICATION SEE SUBSECTION 216.05. SOIL RETENTION BLANKET (CLASS 1) ynrnrpr%.1r%.4.7�r�r� -4 4444 Ate( \UBGRADE SEED 0.5" TO 1" TOPSOIL OR SOIL AMENDED WITH SOIL CONDITIONING TRM SEED 3" TOPSOIL OR SOIL AMENDED WITH SOIL CONDITIONING SOIL FILLED TRM APPLICATION X X X X APPLY SEED AND ANY REQUIRED SOIL CONDITIONERS PRIOR TO COVERING COMPACTED SOIL WITH BLANKET COMPACTED SOIL 6" 6"--1 STAPLE 12" O.C. ANCHOR TRENCH SECTION TO BE USED AT THE BEGINNING AND END OF THE CHANNEL ACROSS IT'S ENTIRE WIDTH. STAPLE 12" O.C. CONSECUTIVE ROLL OVERLAP TO BE USED WHEREVER ONE ROLL OF BLANKET ENDS AND ANOTHER BEGINS WITH UPSTREAM BLANKET PLACED ON TOP OF THE BLANKET ON THE DOWNSTREAM SIDE. 6" EDGE OVERLAP STAPLE 4" O.C. SIDE SEAM OVERLAP TO BE USED FOR OVERLAP WHEN 2 WIDTHS OF BLANKET ARE APPLIED SIDE BY SIDE WITH THE UPHILL BLANKET PLACED ON TOP OF THE BLANKET ON THE DOWNHILL SIDE. 1. PLACE 3" TOPSOIL OR SOIL AMENDED WITH SOIL CONDITIONING. 2. APPLY SEED AND RAKE INTO SOIL. 3. INSTALL TRM. 4. PLACE 0.5" TO 1" TOPSOIL OR SOIL AMENDED WITH SOIL CONDITIONING. 5. APPLY SEED AND RAKE INTO SOIL. 6. INSTALL SOIL RETENTION BLANKET (CLASS 1). SOIL RETENTI❑N BLANKETS/TURF REINFORCEMENT MATS (TRM) CHANNEL APPLICATION IN ACCORDANCE WITH SECTION 216. APPLY SEED AND ANY REQUIRED SOIL CONDITIONERS PRIOR TO COVERING COMPACTED SOIL WITH BLANKET COMPACTED SOIL CHANNEL CHECK SLOT TO BE USED AT 30'INTERVALS IN CHANNEL FLOWLINE. Computer File Information Creation Date: 07/04/12 Initials: DD Last Modification Date: 07/04/12 Initials: LTA Full Path:www.coloradodot.info/business/designsupport Drawing File Name: 2080104012.dgn CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English CIED Sheet Revisions Date: Comments Colorado Department of Transportation 4201 East Arkansas Avenue Denver, Colorado 80222 Phone: (303) 757-9083 Fax: (303) 757-9820 Project Development Branch DD/LTA TEMPORARY EROSION CONTROL STANDARD PLAN NO. M-208-1 Issued By: Project Development Branch on July 4, 2012 Sheet No. 4 of 12 r - 11_6H - i i P-6' X X X X X F.._ 11-611 X X X X X X 7111 TYPICAL STAPLE PATTERN FOR SLOPE APPLICATION SEE SUBSECTION 216.04. APPLY SEED AND ANY REQUIRED SOIL CONDITIONERS PRIOR TO COVERING COMPACTED SOIL WITH BLANKET COMPACTED SOIL IV ,01 1211 0.C. STAPLE 1211 O.C. ANCHOR TRENCH SECTION en TO BE USED AT THE UPSLOPE AND DOWNSLOPE ENDS OF BLANKET ACROSS THE ENTIRE WIDTH OF SLOPE UNLESS SLOPE RUNS INTO RECEIVING WATER. (SEE DOWNSLOPE END STAPLE CHECK). DOWNSLOPE END STAPLE CHECK TO BE USED WHEN SLOPE RUNS INTO A RECEIVING WATER AND CANNOT BE EXTENDED 3 FEET BEYOND SLOPE. W W W W W W W W W W W W W W W W W W W W W W W W W SOIL RETENTION BLANKETS/TURF REINFORCEMENT MATS (TRM) SLOPE APPLICATION IN ACCORDANCE WITH SECTION 216. STAPLE 1211 D.C. CONSECUTIVE ROLL OVERLAP SELTIONZ TO BE USED WHEREVER ONE ROLL OF BLANKET ENDS AND ANOTHER BEGINS WITH THE UPHILL BLANKET PLACED ON TOP OF THE BLANKET ON THE DOWNHILL SIDE. STAPLE 1211 0.C. 611 FOLD OVERLAP 411 STAPLE CHECK NOTES; SECTION © L Z SHAPED FOLD TO BE USED ON SLOPE EVERY 35 FEET MAXIMUM. 2. STAPLE CHECK LOCATIONS SHOULD BE AT LEAST 15 FEET FROM THE BOTTOM OF SLOPE. Computer File Information Creation Date: 07/04/12 Initials: DD Last Modification Date: 07/04/12 Initials: LTA Full Path: www.coloradodot.info/business/designsupport Drawing File Name: 2080105012.dgn CAD Ver.: MicroStation V8 Scale: Not to Scale Units; English CEDD CED Sheet Revisions Date: Comments Colorado Department of Transportation 4201 East Arkansas Avenue Denver, Colorado 80222 Phone: (303) 757-9083 Fax: (303) 757-9820 IIPARBRIFTWIRMIRM Project Development Branch DD/LTA TEMPORARY EROSION CONTROL STANDARD PLAN NO. M-208-1 Issued By: Project Development Branch on July 4, 2012 Sheet No. 5 of 12 GRAVEL BAG SHALL BE PLACED TIGHTLY AGAINST CURB FACE AND SHALL BE PLACED 5' UPSTREAM FROM THE INLET OPENING TOP OF GRAVEL BAG SHALL BE 1" BELOW TOP OF CURB PLAN VIEW LENGTH NUMBER OF OF INLET GRAVEL BAGS (L) UPSTREAM OF INLET 0' - 5' 1 6' -10' 2 L>10' 3 ISOMETRIC VIEW FLOW 20' MIN. CURB GUTTER GRAVEL BAG PLAN VIEW FOR MULTIPLE GRAVEL BAGS GRAVEL BAG CURB CHECK GRAVEL BAGS SHALL BE TIGHTLY ABUTTED WITH NO GAPS (TYP.) GRAVEL BAG APPLICATIONS • PLAN VIEW NOTE:LOCATE GRAVEL BAGS AT THE OUTSIDE EDGE OF THE CONCRETE APRON. SECTION A -A GRAVEL BAG FILTER AT DROP INLET Computer File Information Creation Date: 07/04/12 Initials: DD Last Modification Date: 07/04/12 Initials: LTA Full Path: www.coloradodot.info/business/designsupport Drawing File Name: 2080106012.dgn CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English GED GEED CED Sheet Revisions Date: Comments Colorado Department of Transportation 4201 East Arkansas Avenue Denver, Colorado 80222 Phone: (303) 757-9083 Fax: (303) 757-9820 Project Development Branch DD/LTA TEMPORARY EROSION CONTROL STANDARD PLAN NO. M-208-1 Issued By: Project Development Branch on July 4, 2012 Sheet No. 6 of 12 A sA.&\//0„, CURB 12° AND GUTTER A 12" STORM DRAIN INLET PROTECTION PLAN VIEW INLET PROTECTION DEVICE FLOW OVERFLOW CURB INLET MANHOLE SECTION A -A STORM DRAIN INLET PROTECTION (TYPE I) INLET PROTECTION SHALL EXTEND 12 IN. PAST EACH END OF THE INLET. B \/"/ti \�� \s / f CURB GUTTER — INLET PROTECTION DEVICE INLET GRATE F3 ■ INLET GRATE PLAN VIEW CURB INLET SECTION B -B INLET PROTECTION DEVICE SEDIMENT AND DEBRIS CONTAINMENT AREA STORM DRAIN INLET PROTECTION (TYPE II) OPTION A STORM DRAIN INLET PROTECTION CURB FILTER GUTTER LIFTING STRAPS INLET PROTECTION DEVICE COVERS INLET GRATE ISOMETRIC VIEW STORM DRAIN INLET PROTECTION (TYPE II) OPTION B Computer File Information Creation Date: 07/04/12 Initials: DD Last Modification Date: 07/04/12 Initials: LTA Full Path: www.coloradodot.info/business/designsupport Drawing File Name: 2080107012.dgn CAD Ver.: MicroStation V8 Scale: Not to Scale Units; EnglishQED GEED c Sheet Revisions Date: Comments Colorado Department of Transportation 4201 East Arkansas Avenue Denver, Colorado 80222 Phone: (303) 757-9083 Fax: (303) 757-9820 Project Development Branch DD/LTA TEMPORARY EROSION CONTROL STANDARD PLAN NO. M-208-1 Issued By: Project Development Branch on July 4, 2012 Sheet No. 7 of 12 fL OR DITCH * POINTS "A" SHALL BE HIGHER THAN POINT "B" AND BELOW POINTS "C". TYPICAL SECTION VIEW L = VARIES .4`I j.kA, 1•" L lat0,`/1.�,,x�%.�4,,, 2X MAXIMUM SLOPE GEOTEXTILE EROSION CONTROL (CLASS 2) .t 04 ,O/,0. /.�\ FLOW 4 /4.'I • SECTION VIEW ALONG DITCH FLOWLINE RIPRAP 6" MIN.COVER OVER GEOTEXTILE FLOW 1 DITCH SUBEXCAVATE BELOW FLOWLINE 4T�R 24" CREST HEIGHT GEOTEXTILE EROSION CONTROL (CLASS 2) 8' SECTI❑N DETAIL NOTES: 1. RIPRAP SIZE D50 = 6" OR AS SHOWN ON THE PLANS. 2. THE ENDS OF RIPRAP CHECK DAM SHALL BE A MINIMUM OF 6 IN. HIGHER THAN CENTER OF CHECK DAM. ROCK CHECK DAM FLOW POINT A •h. SILT BERM 1111■■N►. �■■■■►.!i' 1111■\� ARIIIII !i'I■■■I I■\0■:M■■■■r AMENEFTiliMMIZIF I■■■i:;i''1�\1111' 1■■■■U #iii■■■I 4\■■,4!I■\■■ I■■■■%i!A■■■\I 1111■■I_' 4!r■■■Ico ,11■■■I_•aiiMI■I ■■■I`.M111■■0" A■CRINVP,■■■■r I■■■■t%!.\1111■I USE A MINIMUM OF 3 SPIKES 11■■■"0!r■►011, PER SECTION OF SILT BERM. '\1111!!: ,.!I■■■■� -411110.111111111/ '\■■■■r "'■■I SOIL RETENTION BLANKET PLAN VIEW SECURE SILT BERM WTTH SPIKES 10-12" DEEP (TYP.) SECURE BLANKET WITH STAPLES 1' ON CENTER 6" x 6" TRENCH \ SOIL RETENTION BLANKET '440' +CrNrlill.ih.'WWWSVKVCN, VYYV IVY" TYPICAL SECTION VIEW FLOW NOTES: 1. ANCHOR SOIL RETENTION BLANKET INTO TRENCH WITH 8" MINIMUM STAPLES PLACED AT 1.5'INTERVALS ALONG EDGE. 2. FILL AND COMPACT TRENCH. 3. SECTIONS OF THE SILT BERM SHALL BE OVERLAPPED WITH NO GAPS. POINT B BERM SECTION • 1 •�A \'9\9 \ 9 \� �\�\� \vq\ . \rf </c4 POINT "A" SHALL BE HIGHER THAN POINT "B" TO ENSURE THAT WATER FLOWS OVER THE BERM AND NOT AROUND THE ENDS. FRONT VIEW SILT BERM -VELOCITY CHECKS DRAINAGE DITCH APPLICATIONS PON CENTER SILT DIKE SECTION STAPLES SILT DIKE UNIT PLAN VIEW STAPLES 8" DEEP (TYP.) FLOW POINT A 6" x 6" TRENCH APRON FLOW \ .\\ TYPICAL SECTION NOTES: I. ANCHOR APRON INTO TRENCH WITH 8" MINIMUM STAPLES PLACED AT 1.5' INTERVALS ALONG EDGE. 2. FILL AND COMPACT TRENCH. 3. THE APRON SHALL EXTEND A MINIMUM OF 2 FEET BEYOND EACH SIDE OF THE TRIANGLE. POINT B SILT DIKE SECTION 1 POINT "A" SHALL BE HIGHER THAN POINT "B" TO ENSURE THAT WATER FLOWS OVER THE DIKE AND NOT AROUND THE ENDS. FRONT VIEW SILT DIKE -INSTALLATION Computer File Information Creation Date: 07/04/12 Initials: DD Last Modification Date: 07/04/12 Initials: LTA Full Path:www.coloradodot.info/business/designsupport Drawing File Name: 2080108012.dgn CAD Ver.: MicroStation V8 Scale: Not to Scale Units: EnglishQED GED O Sheet Revisions Date: Comments Colorado Department of Transportation 4201 East Arkansas Avenue Denver, Colorado 80222 Phone: (303) 757-9083 Fax: (303) 757-9820 Project Development Branch DD/LTA TEMPORARY EROSION CONTROL STANDARD PLAN NO. M-208-1 Issued By: Project Development Branch on July 4, 2012 Sheet No. 8 of 12 TEMPORARY BERM NOTES: 1. BERMS SHALL HAVE A HEIGHT OF 18 INCHES, SIDE SLOPES OF 2:1 OR FLATTER AND A MINIMUM BASE WIDTH OF 4.5 FEET. 2. BERMS SHALL BE USED TO INTERCEPT AND DIVERT DRAINAGE TO A DESIGNATED OUTLET. 3. BERMS SHALL NOT BE USED WHERE DRAINAGE AREA EXCEEDS 10 ACRES. TEMPORARY BERM PIPE ANCHORS 12" MIN. DIAMETER PIPE 4'-6" MIN. 18" MIN. 1 RIPRAP OUTLET PROTECTION 1 *RIPRAP SIZE D50 = 6 IN. OR AS SHOWN ON THE PLANS. GEOTEXTILE EROSION CONTROL (CLASS 2) TEMPORARY SLOPE DRAIN ANCHOR SIZE VARIES ACCORDING TO PIPE SIZE. TEMPORARY BERM 4'-6" MIN. 18" MIN. 4. N. �* C� ..., _-4 : \'" ♦te,: a. .a bI/lf x. • M• 12" , %, 1 , MIN. DIA. FLEXIBLE PIPE t\ ••v 12" 2' MAX. TEMPORARY DIVERSION NOTES: 1. TEMPORARY DIVERSION DITCH SHALL BE CONSTRUCTED ACROSS THE SLOPE TO INTERCEPT RUNOFF AND DIRECT IT TO A STABLE OUTLET OR SEDIMENT TRAP. 2. USE IMMEDIATELY ABOVE A NEW CUT DR FILL SLOPE OR AROUND THE PERIMETER OF A DISTURBED AREA. 3. GRADIENT ALONG THE FLOW PATH SHALL HAVE A POSITIVE GRADE TO ASSURE DRAINAGE, BUT SHALL NOT BE SO STEEP AS TO RESULT IN EROSION DUE TO HIGH VELOCITY. TEMPORARY BERM RIPRAP OUTLET PROTECTION Computer File Information Creation Date: 07/04/12 Initials: DD Last Modification Date: 07/04/12 Initials: LTA Full Path: www.coloradodot.info/business/designsupport Drawing File Name: 2080109012.dgn CAD Ver.: MicroStation V8 Scale: Not to Scale Units; EnglishQED GEED c Sheet Revisions Date: Comments Colorado Department of Transportation 4201 East Arkansas Avenue Denver, Colorado 80222 Phone: (303) 757-9083 Fax: (303) 757-9820 IIPARBRIFIIMPRENSI Project Development Branch DD/LTA TEMPORARY EROSION CONTROL STANDARD PLAN NO. M-208-1 Issued By: Project Development Branch on July 4, 2012 Sheet No. 9 of 12 GEOTEXTILE STAPLED TO POSTS (TYP.) GEOTEXTILE ANCHORED IN TRENCH GEOTEXTILE 10' MAX. 24" MIN. TRENCH 6" x 6" BACKF LL14) GEOTEXTILE- 12" BURIED IN TRENCH AND FIRMLY ATTACHED TO POST 24" MIN. 42" MIN. SILT FENCE 18" MIN. 6" x 6" TRENCH GEOTEXTILE SHALL BE ATTACHED TO WOOD POSTS WITH THREE OR MORE STAPLES PER POST. STAPLES SHALL BE /z" WOOD POST SHALL BE 1 %z" X 1 /2" NOMINAL. END SECTION DETAIL (PLAN VIEW) GEOTEXTILE SHALL BE FOLDED AROUND TWO POSTS ONE FULL TURN. SECURE GEOTEXTILE TO POST WITH THREE STAPLES MINIMUM. POST B FLOW GEOTEXTILE SECTION B GEOTEXTILE SECTION A JOINING SECTION DETAIL (PLAN VIEW) FOLD GEOTEXTILE AROUND EACH POST ONE FULL TURN. SECURE GEOTEXTILE TO POST WITH THREE STAPLES MINIMUM. POSTS SHALL BE TIGHTLY ABUTTED WITH NO GAPS TO PREVENT POTENTIAL FLOW-THROUGH OF SEDIMENT AT JOINT. •V • %•A- A A A_AA.A.AAh AA A44 fr% 0 00 O O NOTES 1. SILT FENCE SHALL HAVE A MAXIMUM DRAINAGE AREA OF ONE-QUARTER ACRE PER 100 FEET OF SILT FENCE LENGTH; MAXIMUM SLOPE LENGTH BEHIND BARRIER IS 100 FEET; MAXIMUM GRADIENT BEHIND THE BARRIER IS 2:1. 2. SILT FENCE USED AT TOE OF SLOPE SHALL BE PLACED 5 TO 10 FEET BEYOND TOE OF SLOPE TO PROVIDE STORAGE CAPACITY. 3. SILT FENCE SHALL BE PLACED ON THE CONTOUR, WITH ENDS FLARED UP SLOPE. O s O 9 SILT FENCE O. O SILT FENCE APPLICATION ISOMETRIC VIEW 0 SECTION A -A TOE OF SLOPE PROTECTION 0 Computer File Information Creation Date: 07/04/12 Initials: DD Last Modification Date: 07/04/12 Initials: LTA Full Path: www.coloradodot.info/business/designsupport Drawing File Name: 20801010012.dgn CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English GED GEED CED Sheet Revisions Date: Comments Colorado Department of Transportation 4201 East Arkansas Avenue Denver, Colorado 80222 Phone: (303) 757-9083 Fax: (303) 757-9820 Project Development Branch DD/LTA TEMPORARY EROSION CONTROL STANDARD PLAN NO. M-208-1 Issued By: Project Development Branch on July 4, 2012 Sheet No. 10 of 12 INLET FLOW (Q) — - 2:1 OR - - FLATTER — BOTTOM LENGTH B +1 0 SIDE SLOPE — 2:1 OR FLATTER THE LENGTH TO WIDTH RATIO IS 2:1 PLAN VIEW B VARIES A WEIR LENGTH (10 NATIVE SOIL DR COMPACTED BACKFILL FLAT BOTTOM 44 - 541/4 N/'/ WEIR LENGTH (X) GEOTEXTILE EROSION CONTROL (CLASS 1) WEIR INVERT h 4'141N. -1 NOTES 1. THE MAXIMUM DRAINAGE AREA IS 5 ACRES. 2. THE MAXIMUM STRUCTURE LIFE IS 2 YEARS. 3. THE STORAGE AREA IS 1800 CUBIC FEET PER ACRE. 4. THE MAXIMUM EMBANKMENT HEIGHT SHALL BE 5 FT. MEASURED ON THE DOWNSTREAM SIDE. 5. THE LENGTH/WIDTH RATIO MAY BE ADJUSTED TO MEET SITE CONDITIONS WHEN APPROVED BY THE ENGINEER. 6. WIDTH (W) OF SEDIMENT TRW IS APPROXIMATELY EQUAL TO THE WEIR LENGTH (X). 7. SEDIMENT TRW DESIGN SHALL BE APPROVED BY THE ENGINEER. 18" (MIN.) OVERFLOW w-f4.4W2TriAlrt-• D50 = 12" 11!��• / / a �'\\ GEDTEXTILE EROSION ./. SECTION A -A 18" (MIN.) •11) 00 ��%ILI / •0.gme A � SECTION B -B SEDIMENT TRAP CONTROL (CLASS 1) !: • `ilii is DRAINAGE AREA (ACRES) WEIR LENGTH (FEET) 1 4 2 6 3 8 4 10 5 12 WEIR LENGTH TABLE Computer File Information Creation Date: 07/04/12 Initials: DD Last Modification Date: 07/04/12 Initials: LTA Full Path: www.coloradodot.info/business/designsupport Drawing File Name: 20801011012.dgn CAD Ver.: MicroStation V8 Scale: Not to Scale Units; EnglishQED GEED c Sheet Revisions Date: Comments Colorado Department of Transportation 4201 East Arkansas Avenue Denver, Colorado 80222 Phone: (303) 757-9083 Fax: (303) 757-9820 IIPAMILVAIMIMIRRINE Project Development Branch DD/LTA TEMPORARY EROSION CONTROL STANDARD PLAN NO. M-208-1 Issued By: Project Development Branch on July 4, 2012 Sheet No. 11 of 12 STEP I. EXCAVATE THE TRENCH. FLOW WOOD STAKE (TYP.) 1 FILTERED FLOW i■N�III� '/\ 4" MIN! � //�/I// 12" MIN. TWINE OR WIRE i EROSION BALE TRENCHING AND STAKING STEP 2. PLACE AND STAKE THE EROSION BALES. WOOD STAKE (TYP.) WEDGE LOOSE CERTIFIED WEED FREE STRAW BETWEEN EROSION BALES EROSION BALES TOE OF FILL—I TWINE OR WIRE END EROSION BALES TO BE KEYED INTO FILL SLOPE FLOW PIPE END SECTION WOOD STAKE (TYP.) PLAN VIEW EROSION BALE CULVERT INLET PROTECTION EROSION BALE APPLICATIONS NOTES 1. STAKES SHALL BE WOOD AND SHALL BE 2" X 2" NOMINAL. 2. EROSION BALES SHALL BE 18" X 18" X 36". 3. EROSION BALES SHALL BE ENTRENCHED 4 IN. MINIMUM INTO THE SOIL, THIGHTLY ABUTTED WITH NO GAPS, STAKED, AND BACKFILLED AROUND THE ENTIRE OUTSIDE PERIMETER. DROP INLET WITH GRATE PLAN VIEW WOOD STAKE (TYP.) ENTRENCHED EROSION BALES A SECTION A -A EROSION BALE FILTER AT DROP INLET Computer File Information Creation Date: 07/04/12 Initials: DD Last Modification Date: 07/04/12 Initials: LTA Full Path: www.coloradodot.info/business/designsupport Drawing File Name: 20801012012.dgn CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English GED GEED CED Sheet Revisions Date: Comments Colorado Department of Transportation 4201 East Arkansas Avenue Denver, Colorado 80222 Phone: (303) 757-9083 Fax: (303) 757-9820 Project Development Branch DD/LTA TEMPORARY EROSION CONTROL STANDARD PLAN NO. M-208-1 Issued By: Project Development Branch on July 4, 2012 Sheet No. 12 of 12