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HomeMy WebLinkAboutC7.3 STORMWATER POLLUTION PREVENTION PLANSTORMWATER POLLUTION PREVENTION PLANC7.33850 Priority Way South Drive, Suite 110Indianapolis, IN 46240Phone: (317) 779-2194NO.DATEREMARKSFILENAME: DATE: JOB NO. SHEET 02/14/2023 12357 ACE HARDWAREVillage of WestClayHARLESTON STREET, CARMEL, IN 46032FILENAME: 12357_C7.0 ECN R CERTIFIED BY NOT F O R CON S T R U C TI O N SOILS MAP Brookston Silty Clay Loam - Urban Land Complex (YbvA) ·Hydrologic Soils Group B (HSG B) Crosby Silt Loam - Urban Land Complex (YclA) ·Hydrologic Soils Group C (HSG C) SITE NAME The area scheduled for construction is known as "Ace Hardware - Village of WestClay" (hereinafter referred to as the "Project") PROJECT LOCATION The property is located at the southwest corner of Towne Road and Harleston Street in Carmel, Indiana, at a latitude of 39°58'32" N and a longitude of 86°12'13" W. OWNER'S INFORMATION Name: Kennmar, LLC Address:5253 W 16th St., Speedway, IN 46224 Contact:Brent Benge Title:CEO Telephone:317-635-5555 Email:bbenge@kennmar.com OPERATOR'S INFORMATION Name: Kennmar, LLC Address:5253 W 16th St., Speedway, IN 46224 Contact:Brent Benge Title:CEO Telephone:317-635-5555 Email:bbenge@kennmar.com NOTICE OF INTENT All parties defined as owners must submit a Notice of Intent (NOI) at least 48 hours prior to commencement of on-site construction activities. Submittal of late NOI's is not prohibited; however, authorization under the construction general permit is only for discharges that occur after permit coverage is granted. Unpermitted discharges may be subject to enforcement actions by the EPA. For the purposes of this permit, an owner is defined as any party meeting either of the following requirements: 1)The party has operational control over the construction plans and specifications, including the ability to make modifications to those plans and specifications. 2)The party has day-to-day operational control of those activities at a project that are necessary to ensure compliance with a stormwater pollution prevention plan for the site or other permit conditions. A1 PLAN INDEX Refer to the Erosion Control Plan which shows the required plan elements. A2 VICINITY MAP Refer to the Cover Sheet for a vicinity map. A3 PROJECT NARRATIVE The project consists of the construction of a ±21,000 square foot Ace Hardware, asphalt parking lots and drives, and associated utility infrastructure. The total area of the site is ±1.76 acres. A4 LATITUDE AND LONGITUDE The project is located at a latitude of 39°58'32" N and a longitude of 86°12'13" W A5 LEGAL DESCRIPTION OF THE PROJECT SITE Section:29 Township:18N Range:3E Civil Township:Clay Refer to the General Notes and Typical Sections Sheet for legal description. A6 11" X 17" PLAT See Site Plan Sheet C4.0. A7 100 YEAR FLOODPLAINS, FLOODWAY FRINGES AND FLOODWAYS BOUNDARY The project site is located within Zone X as indicated on the Hamilton County, IN Flood Insurance Rate Map 18057C0205G dated 11/19/2014. A8 ADJACENT PROPERTY LAND USE North:Commercial South:Residential East:Residential West:Vacant Commercial Lot A9 IDENTIFICATION OF U.S. EPA APPROVED OR ESTABLISHED TMDL The project area does not fall within a watershed for which there is a Total Maximum Daily Load (TMDL). A10 IDENTIFICATION OF RECEIVING WATER(S) Williams Creek is the ultimate receiving water for this project. A11 IDENTIFICATION OF DISCHARGE TO 303(d) IMPAIRED WATERS Williams is not listed as a 303(d) impaired water. A12 SOILS MAP Refer to this sheet for the soils map. A13 LOCATION AND NAME OF ALL WETLANDS, LAKES, AND WATERCOURSES ON AND ADJACENT TO THE SITE There are no wetlands, lakes, or watercourses on or adjacent to the site according to the National Wetlands Inventory map. A14 IDENTIFICATION OF STATE AND FEDERAL WATER QUALITY PERMITS Indiana Department of Environmental Management (IDEM) Construction Stormwater General Permit (CSGP) A15 IDENTIFICATION AND DELINEATION OF EXISTING COVER Approximate areas of existing vegetative cover are as shown on the Existing Conditions Plan or Topographic Survey. The land cover of the site prior to the mass grading project is agricultural/farmland. A16 EXISTING TOPOGRAPHY Refer to the Existing Conditions Plan Sheet C3.0. A17 LOCATION(S) WHERE RUNOFF ENTERS THE PROJECT SITE There are no areas where a significant amount of offsite runoff enters the project site. A18 LOCATION(S) WHERE RUNOFF DISCHARGES FROM THE PROJECT SITE Existing runoff sheet flows off the site to the northwest and to the east toward Towne Road. A19 LOCATION OF ALL EXISTING STRUCTURES Refer to the Existing Conditions Plan Sheet. A20 EXISTING PERMANENT RETENTION OR DETENTION FACILITIES Refer to the Existing Conditions plan Sheet. A21 LOCATIONS WHERE STORMWATER MAY BE DISCHARGED TO GROUNDWATER There are no areas where stormwater may be discharged to groundwater on this project. Refer to the Existing Conditions plan Sheet. A22 SIZE OF PROJECT AREA 1.76 acres A23 TOTAL EXPECTED LAND DISTURBANCE 1.76 acres A24 PROPOSED FINAL TOPOGRAPHY Refer to the Grading Plan. A25 LOCATIONS AND BOUNDARIES OF DISTURBED AREAS Refer to the Erosion Control Plan Sheet. A26 LOCATIONS, SIZE, AND DIMENSIONS OF STORMWATER DRAINAGE SYSTEM Locations of stormwater systems: Refer to the Utility Plans Size of storm sewers: Refer to the Utility Plans or Storm Sewer Plan and Profiles Details of storm inlets and manholes: Refer to the Construction Details A27 LOCATIONS WHERE STORMWATER AND NON-STORMWATER DISCHARGE LEAVES THE SITE Stormwater will be conveyed via sheet flow, inlets, and storm sewer to an storm sewer system. Part of the site will connect to a manhole to the east along Towne Road, and part of the site will connect to a manhole to the west along Pettigru Drive.The site will discharge to off-site detention ponds that have been master planned. A28 LOCATIONS AND BOUNDARIES OF DISTURBED AREAS Refer to the Site Plan for site improvements and refer to the Utility Plan for all utility improvements. A29 LOCATION OF ALL ON-SITE AND OFF-SITE SOIL STOCKPILES AND BORROW AREAS In the event that it excess soil becomes should be stockpiled, it shall be immediately surrounded with silt fence, seeded and/or removed from the project site in accordance with all applicable laws. A30 CONSTRUCTION SUPPORT ACTIVITIES Support activities must be directly related to the construction site and not a commercial/industrial operation or serve multiple unrelated construction projects. Support activities must not continue to operate beyond the completion of the construction activity for the project it support. A31 LOCATION OF IN-STREAM ACTIVITIES No water bodies are present on the project site. B1 DESCRIPTION OF POTENTIAL POLLUTANT SOURCES ASSOCIATED WITH CONSTRUCTION ACTIVITIES The following potential pollutant sources may be associated with construction activities on site: 1.Material storage area 2.Construction waste material 3.Fuel storage areas and fueling stations 4.Exposed soils 5.Leaking vehicles and equipment 6.Sanitary waste from temporary toilet facilities 7.Litter 8.Windblown dust 9.Soil tracking off site from construction equipment The following materials may be staged or stored on site at various points during construction: 1.Structural fill 2.Pavement base stone 3.HDPE, PVC, RCP, or Ductile Iron Pipe 4.Precast concrete, HDPE, or PVC drainage and sanitary structures B2 STABLE CONSTRUCTION ENTRANCE LOCATIONS AND SPECIFICATIONS Construction entrances will be in place prior to any site construction or demolition. Entrances are shown on the Erosion Control Plan (Sheet C7.0). Refer to the Erosion Control Details for details. B3 SPECIFICATIONS FOR TEMPORARY AND PERMANENT STABILIZATION Temporary Surface stabilization is required on any bare or thinly vegetated areas that is scheduled or likely to remain inactive for a period of 7 days or more. Refer to the Temporary Seeding Detail within the Erosion Control Details for specifics on soil amendments, seed mixtures, and mulching. The surface stabilization for the lots needs to be established as soon as possible to prevent dirt wash-out into the streets. If this is not possible, then silt fencing will need to be installed along the back of curbs. Permanent 1.) Loosen lawn area to a minimum depth of 6 inches. Mix soil amendments and fertilizers with topsoil at rates specified. Organic soil amendments such as peat, compost, or manure shall be applied at 2" depth evenly over soil and incorporated into the top 6" of topsoil. Provide fertilizer with percentage of nitrogen required to provide not less than 1 pound of actual nitrogen per 1,000 square feet of lawn area and not less than 4 percent phosphoric acid and 2 percent potassium. At least 50 percent of nitrogen to be organic form. Delay mixing of fertilizer if planting will not follow placing of planting soil within a few days. 2.) Fertilizer for lawns: provide a fast release fertilizer with a composition of 1 Ib per 1,000 square feet of actual nitrogen, 4 percent phosphorous, and 2 percent potassium by weight. 3.) Slow-release fertilizer for trees and shrubs: granular fertilizer consisting of 50 percent water-insoluble nitrogen, phosphorous and potassium made up of a composition by weight of 5 percent. 4.) Grade lawn and grass areas to a smooth, even surface with loose, uniformly fine texture. Limit fine grading to areas that can be planted within immediate future. Remove trash, debris, stones larger than 1 inch diameter, and other objects that may interfere with planting or maintenance operations. Sow seed using a spreader of seeding machine. Do not seed when wind velocity exceeds 5 miles per hour. 5.) Distribute seed evenly over entire area by sowing equal quantity in 2 directions at right angles to each other. 6.) Rake seed lightly into top 1/8 inch of soil, roll lightly, and water with a fine spray. 7.) Install erosion control blankets as indicated on the Erosion Control Plan. 8.) Protect seeded areas against erosion by spreading clean, seed-free straw mulch after completion of speeding operations. Spread uniformly to form a continuous blanket not less than 1-1/2 inches loose measurements over seeded areas. 9.) Water newly planted lawn areas and keep moist until new grass is established. Immediately repair any lawn areas disturbed by construction activities including tree and shrub installation. 10.) Refer to the Permanent Seeding Details within the Erosion Control Detail Sheet, for timing of permanent seeding, grass seed specifications and mulching specifications. 11.) Stabilization shall be initiated by the end of the seventh day an area is left idle and the stabilization shall be completed within 14 days after initiation. B4 SEDIMENT CONTROL MEASURES FOR CONCENTRATED FLOW AREAS There are no proposed concentrated flow areas. B5 SEDIMENT CONTROL MEASURES FOR SHEET FLOW AREAS Sheet flow areas will be protected by seed and mulch or hydroseeding. Erosion control blankets will be installed on sloped areas where the slope exceeds 4:1 (horizontal to vertical). Silt fencing will be utilized to prevent sedimentation from leaving the site. Refer to the Erosion Control Plan for locations and the Erosion Control Details for details. B6 RUNOFF CONTROL MEASURES Perimeter silt fence and silt worm will be used to control run off during construction. B7 STORMWATER OUTLET PROTECTION MEASURES Stormwater outlet locations will be in underground storm sewers, therefore no outlet protection methods are required for this project. B8 GRADE STABILIZATION STRUCTURE LOCATIONS N/A B9 DEWATERING APPLICATIONS AND MANAGEMENT METHODS If dewatering is necessary for the project, a dewatering detail can be found on the Construction Details Sheet. B10 MEASURES UTILIZED FOR WORK WITHIN WATERBODIES No water bodies are present on the project site. B11 MAINTENANCE GUIDELINES FOR STORMWATER QUALITY MEASURES Inspection Schedule/Reporting All impacted areas, as well as all erosion and sediment control devices, will be inspected every seven (7) calendar days and within 24 hours after a rianfall of 0.5 inch or greater. Where sites have been final or temporarily stabilized or on sites where runoff is unlikely due to winter conditions (e.g. site is covered with snow, ice, or frozen ground exists), such inspections shall be conducted at least once every month. Inspections shall be conducted and a written report prepared, by a designated and qualified person familiar with the USEPA NPDES Storm Water General Permit, this SWPPP, and the Project. Inspection reports shall be completed including scope of the inspection, name(s) and qualifications of personnel making the inspection, the date of the inspection, observations relating to the implementation of the SWPPP, and any actions taken as a result of incidents of noncompliance noted during the inspection. The inspection report should state whether the site was in compliance or identify and incidents of noncompliance. The contractor shall keep a copy of the inspection reports on site and permanently for a period of two years following construction. The on-site reports may be requested by inspections conducted by the local governing authority. Construction Entrance Locations where vehicles exit the site shall be inspected for evidence of off-site sediment tracking. Each contractor and subcontractor shall be responsible for maintaining the Construction Entrance and other controls as described in this SWPPP. Material Storage Inspections Inspectors must evaluate areas used for storage of materials that are exposed to precipitation. The purpose is to ensure that materials are protected and/or impounded so that pollutants cannot discharge from storage areas. Off-site material storage areas used solely b the subject project are considered to be part of the project and must be included in the erosion control plans and site inspection reports. Soil Stabilization Inspections Seeded areas will be inspected to confirm that a healthy stand of vegetation is maintained. The site has achieved final stabilization once all areas are covered with pavement or have a stand of vegetation with at least 70% of the background vegetation density. The density of 70% or greater must be maintained to be considered as stabilized. The operator or their representative will water, fertilize, and reseed disturbed areas as needed to achieve this goal. Erosion and Sediment Control Inspections All controls should be inspected at least once every seven (7) calendar days and following any storm event of 0.5 inch or greater. The following is a list of inspection/maintenance practices that will be used for specific controls: 1.Geotextiles/Erosion Control Mats: Missing or loose matting must be replaced or re-anchored. 2.Inlet Protection: If silt fence inlet protection is to be used, sediment should be removed when it reaches approximately one-half the height of the fence. If a sump is used, sediment should be removed when the volume of the basin is reduced by 50%. 3.Mulching: Inspect for thin or bare spots caused by natural decomposition or weather-related events. Mulch in high traffic areas should be replaced on a regular basis to maintain uniform protection. 4.Silt Fence: Removal of built-up sediment will occur when the sediment reaches one-third the height of the fence. 5.Stabilized Construction Entrance: Periodic re-grading and top dressing with additional stone. 6. Vegetation: Protect newly seeded areas from excessive runoff and traffic until vegetation is established. Establish a watering and fertilizing schedule. 7.Good Housekeeping: Litter, construction debris, and construction chemicals exposed to stormwater shall be prevented from becoming a pollutant source for stormwater discharges through screening of outfalls and daily pickup of litter. In the event that sediment escapes the construction site, off-site accumulations of sediment must be removed at a frequency sufficient to minimize adverse impacts. An example of this may be the situation where sediment has washed into the street and could be carried into the storm sewers by the next rainfall and/or pose a safety hazard to user of public street. Modifications/Revisions to SWPPP Based on inspection results, any necessary modification to this SWPPP shall be implemented within seven (7) calendar days of the inspection. A modification is necessary if a control measure or operational procedure does not provide adequate pollutant control. All revisions shall be recorded on a Record of Revisions within seven (7) calendar days of the inspection. It is the responsibility of the operator to maintain effective pollutant discharge controls. Physical site conditions or contractor/subcontractor practices could make it necessary to install more control than were originally planned. Fore example, localized concentrations of surface runoff or unusually steep areas could required additional silt barrier or other structural controls. Assessing the need for and installing additional controls will be a continuing contractor/subcontractor responsibility until final stabilization is achieved. Contractors and subcontractors implementing this SWPPP must remain alert to the need to periodically refine and update this SWPPP in order to accomplish the intended goals. Notice of Termination Compliance of the site with the General Construction Permit remains the responsibility of all operators that have submitted an NOI until such time as they have submitted a Notice of Termination (NOT). The permittee's authorization to discharge under the General Construction Permit terminates at midnight of the day the NOT is signed. All permittees must submit an NOT within thirty (30) days after one or more of the following conditions have been met: 1.Final stabilization has been achieved on all portions of the site for which the permittee was responsbile. 2.Another operator/permittee has assumed control over all areas of the site that have not been finally stabilized. 3.In residential construction operations, temporary stabilization has been completed and the residence has been transferred to the homeowner. B12 SEQUENCE DESCRIBING STORMWATER QUALITY MEASURE IMPLEMENTATION RELATIVE TO LAND-DISTURBING ACTIVITIES Pre-construction Activity 1.The exact locations of all existing utilities within the project limits are to verified prior to construction. 2.Schedule pre-construction meeting with local stormwater authority 48 hours prior to start of construction. 3.Install protection fencing for existing trees to remain in place within the project limits Construction Site Access 1.Install gravel construction entrance 2.Post the NOI, any additional permits, and contact information at the construction entrance. NOI to remain posted for duration of the project. 3.Install construction staging pads, fueling station, material storage areas, concrete washout, construction parking areas, and stabilize construction routes Perimeter Controls 1.Utilize the gravel construction entrance for installation of the perimeter silt fence. Add stone if needed. Initial Land Clearing and Grading Activities 1.Add protection measures to existing inlets. 2.Strip the topsoil and stabilize the topsoil stockpile. Secondary Land Grading Activities 1.Begin site grading/construction of detention basins (if applicable) and stabilize any soil stockpiles that will be left dormant for more than 10 days. 2.Complete the cut and fills on the site. Final grade and seed the pond slopes (if applicable). Stabilize slopes with erosion control blanket. 3.Install storm sewer system and install inlet protection immediately upon complete of the inlet and install Flexamat outlet protection prior to installing outlets. Surface Stabilization 1.Apply temporary seeding and stabilize slopes in areas where rough grading has been completed. 2.Apply permanent seeding and stabilize slopes in areas where final grading has been completed. Building Construction 1.Prior to building construction install stone surface for paved areas. 2.Building pads left dormant for more than 10 days, must be temporarily seeded. 3.Start building construction. Install staging area for building materials and stabilize. Final Shaping/Landscaping 1.Utilize topsoil salvage in applicable areas and apply permanent seeding. 2.Apply permanent seeding around the perimeter of the site. 3.Complete utility installation, curbs, paving, and building construction. 4.Install landscaping plant material and stabilize all disturbed areas. 5.Remove all erosion and sediment control practices when areas have a uniform grass cover. B13 EROSION AND SEDIMENT CONTROL ON INDIVIDUAL RESIDENTIAL BUILDING LOTS This project is not subdivided into lots. B14 MATERIAL HANDLING AND SPILL PREVENTION PLAN Hazardous Waste Whenever possible, minimize the use of hazardous materials and generation of hazardous wastes. All hazardous waste materials will be disposed in the manner specified by federal, state, or local regulations or by the manufacturer. Use containment berms in fueling and maintenance areas and where potential for spills is high. A foreman or supervisor should be designated in writing to oversee, enforce, and instruct construction workers on proper hazardous waste procedures. The location of any hazardous waste storage areas should be indicated on the stormwater pollution prevention plan by the operator following on-site location of the facility. Material Handling and Spill Prevention Discharge of hazardous substances or oil into stormwater is subject to reporting requirements. In the event of a spill of a hazardous substance, the operator is required to notify the National Response Center (1-800-424-8802) to properly report the spill. In addition, the operator shall submit a written description of the release (including the type and amount of material released, the date of the release, the circumstances of the release, and the steps to be taken to prevent future spill) to the local governing authority. The SWPPP must be revised within 14 calendar days after the release to reflect the release, stating the information above along with modifications minimize the possibility of future occurrences. Each contractor and subcontactor is responsible for complying with these reporting requirements. Spill Response Plan Minor - Small spills that typically involve oil, gasoline, paint, hydraulic fluid, etc. can be controlled by the first responder at the discovery of the spill. ·Contain spill to prevent material from entering storm or groundwater. Do not flush with water or bury. ·Use absorbent material to clean-up spill material and any subsequently contaminated soil and dispose of properly. Semi-Significant Spills - Approximately ten gallons or less of pollutant with no contamination of ground or surface waters. Minor spills can be generally controlled by the first responder with help from other site personnel. This response may require other operations to stop to make sure the spill is quickly and safely addressed. At the discovery of the spill: ·Contain spill to prevent material from entering storm or ground water. Do not flush with water or bury. ·Use absorbent material to clean-up spills and dispose of properly. Spills on impervious surfaces should be disposed of as soon as possible to prevent migration deeper into the soil and groundwater. Dispose of contaminated soils or absorbents properly. ·Contact 911 if the spill could be a safety issue ·Contact supervisors and designated site inspectors, including MS4 personnel, immediately. Contaminated solids are to be removed to an approved landfill. Major or Hazardous Spills - More than ten gallons, there is the potential for death, injury or illness to humans or animals, or has the potential for surface or groundwater pollution. ·Control or contain the spill without risking bodily harm. Temporarily plug storm drains if possible to prevent migration of the spill into the stormwater system ·Immediately contact the local Fire Department at 911 to report any hazardous material spill. ·Contact supervisors and designated site inspectors immediately. Governing authorities, including MS4 personnel, responsible for stormeater facilities should be contacted as well. The contractor is responsible for having these contact numbers available at the job site. A written report should be submitted to the owner as soon as possible. ·As soon as possible but within 2 hours of discovery, contact the local agency responsible for spill management. The following information should be noted for future reports to the agency: ··Name, address and phone number of person making the spill report ··The location of the spill ··The time of the spill ··Identification of the spilled substance ··Approximate quantity of the substance that has been spilled or may be further spilled ··The duration and source of the spill ··Name and location of the damaged waters ··Name of spill response organization ··What measures were taken in the spill response ··Other information that may be significant Additional regulations or requirement may be present. A spill response professional should be consulted to make sure all appropriate and required steps have been taken. Contaminated solids should only be removed from the site after approval is give by the appropriate agency. In the event of a spill, contact the IDEM Office of Emergency Response (888) 233-7745. B15 MATERIAL HANDLING AND STORAGE PROCEDURES ASSOCIATED WITH CONSTRUCTION ACTIVITY Sanitary/Septic Contractors and subcontractors must comply with all state and local sanitary sewer, portable toilet, or septic system regulations. Sanitary facilities shall be provided at the site by each contractor or subcontractor throughout construction activities. The sanitary facilities should be utilized by all construction personnel and be serviced regularly. All expenses associated with providing sanitary facilities are the responsibility of the contractors and subcontractors. The location of any sanitary facilities should be indicated on the stormwater pollution prevention plan by the operator following on-site location of said facilities. Water Source Water used to establish and maintain grass, to control dust, and for other construction purposes must originate from a public water supply or private well approved by the State or local health department. Equipment Fueling and Storage Areas Equipment fueling, maintenance, and cleaning should only be completed in protected areas (i.e., bermed area). Leaking equipment and maintenance fluids will be collected and not allowed to discharge onto soil where they may be washed away during a rain event. Equipment wash-down (except wheel washes) should take place within an area surrounded by a berm. The use of detergents is prohibited. Dust Control/Off-Site Vehicle Tracking During construction, water trucks should be used, as needed, by each contractor or subcontractor to reduce dust. After construction, the site should stabilized to reduce dust. Construction traffic should enter and exit the site at a Construction Entrance with a rock pad or equivalent device. The purpose of the rock pad is to minimize the amount of soil and mud that is tracked onto existing street. If sediment escapes the construction site, off-site accumulations of sediment must be removed a frequency sufficient to minimize off-site impacts. Hazardous Material Storage Chemicals, paint, solvents, fertilizers, and other toxic or hazardous materials should be stored in their original containers (if original container is not resealable, store the products in a clearly labeled, waterproof container). Except during application, the containers should be kept in trucks or in bermed areas within covered storage facilities. Runoff containing such materials shall be collected, removed from the site, and disposed of in accordance with the federal state, and local regulations. As may be required by federal, state or local regulations, the Contractor should have a Hazardous Materials Management Plan and/or Hazardous Materials Spill and Prevention Program in place. A foreman or supervisor should be designated in writing to oversee, enforce, and instruct construction workers on proper hazardous materials storage and handling procedures. The location of any hazardous material storage areas should be indicated on the stormwater pollution prevention plan by the operator following on-site location of the storage areas. Concrete Washout All concrete trucks waste material shall be completely contained and disposed in accordance with all local, state, and federal regulations. A pit or container is required when cleaning concrete chutes. Solid Waste Disposal No solid material, including building materials, is permitted to be discharged to surface waters or buried on site. All solid waste materials, including disposable materials incidental to construction activity, must be collected in containers or closed dumpsters. The collection containers must be emptied periodically and the collected material hauled to a landfill permitted by the State and/or appropriate local municipality to accept the waste for disposal. A foreman or supervisor should be designated in writing to oversee, enforce, and instruct construction workers on proper solid waste procedures. C1 DESCRIPTION OF POLLUTANTS AND THEIR SOURCES ASSOCIATED WITH THE PROPOSED LAND USE The proposed land use is for the construction of the Ace Hardware in the Village of WestClay The pollutants and sources of each pollutant normally expected from this type of land use are: Pollutant Source: Passenger vehicles, delivery vehicles. Type of Pollutant: Oil, gasoline, diesel fuel, any hydrocarbon associated with vehicular fuels and lubricants, grease, antifreeze, windshield cleaner solution, brake fluid, dust, rubber, glass, metal and plastic fragments, grit, road de-icing materials. Pollutant Source: Building Type of Pollutant: Cleaning solutions or solvents, leaks from HVAC equipment, grit from roof drainage, aggregate or rubber fragments from roofing system. Pollutant Source: Trash Dumpster Type of Pollutant: Cleaning solutions or solvents, litter (paper, plastic, general refuse associated with distribution operations), uneaten food products, bacteria. Pollutant Source: Parking Lot Type of Pollutant: Any pollutant associated with vehicular sources, grit from asphalt wearing surface, bituminous compounds from periodic maintenance (sealing, resurfacing, and patching), pavement de-icing materials, paint fragments from parking stall striping, concrete fragments, wind-blown litter from off-site sources, elevated water temperatures from contact with impervious surfaces. Pollutant Source: Lawn and Landscape Areas Type of Pollutant: Fertilizers, soil, organic material (leaves, mulch, grass clippings) C2 DESCRIPTION OF PROPOSED POST-CONSTRUCTION STORMWATER QUALITY MEASURES Permanent Vegetation Topsoil will be placed in lawn areas and seeded with grass, and graded not to exceed 3:1 slopes. Proposed landscape trees and shrubs will also be added. These bio areas will act as a natural filter strip to help improve stormwater quality. The vegetated areas will slow the velocities of stormwater runoff, reduce sediment runoff, and reduce problems associated with mud or dust from bare soils. Wet Pond (Existing Post-Construction Measure) Wet ponds included a permanent pool for water quality treatment and are effective for pollutant removal and peak rate mitigation. The primary treatment mechanism is settling by gravity of particulates and their associated pollutants while stormwater is detained in the pond. Good Housekeeping Measures Good housekeeping measures such as regular street or pavement sweeping, installation of trash receptacles, and reduction in fertilizer overspray can be incorporated by the owner and/or occupant. Mechanical BMP (Cascade Separator, etc.) A BMP structure will be installed at the downstream end of the storm sewer system, prior to the storm sewer outlet. The primary purpose of the BMP is to remove sediment, oils and floatable debris from the stormwater prior to discharging from the site. C3 PLAN DETAILS FOR EACH STORMWATER MEASURE Refer to the Erosion Control Plan and Erosion Control Details. C4 SEQUENCE DESCRIBING STORMWATER QUALITY MEASURE IMPLEMENTATION Refer to the Erosion Control Plan and Erosion Control Details. C4 LOCATION, DIMENSIONS, SPECIFICATIONS, AND CONSTRUCTION DETAILS OF EACH STORMWATER QUALITY MEASURE An existing wet detention pond was constructed to serve as the water quality measure. C5 MAINTENANCE GUIDELINES FOR POST-CONSTRUCTION STORMWATER QUALITY MEASURES Maintenance requirements for the stormwater quality measures which will remain in place after construction is complete, are described below. Vegetated Swale Vegetated swales require little maintenance if properly designed. Mow as needed during the growing season; inspect for erosion control problems twice during the first year, annually thereafter; and removed sediment, trash and debris annually or more frequently if needed. Wet Detention Pond Remove debris and sediment from entire pond when necessary. Inspect perimeter of basin semi-annually and after major storm events. Regrade soil if gullies form and replant ground. Inspect inlet and outlet devices and structures annually and after major storm events. C6 ENTITY RESPONSIBLE FOR OPERATION AND MAINTENANCE OF POST CONSTRUCTION STORMWATER MEASURES See owner information at the beginning of this form.