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HomeMy WebLinkAbout10CIS C a C C • ■l ADDITIONAL STORMWATER POLLUTION PREVENTION MEASURES VEHICLE AND EQUIPMENT MAINTENANCE Description and Purpose Prevent or reduce the contamination of stormwater resulting from vehicle and equipment maintenance by running a "dry and clean site". The best option would be to perform maintenance activities at an offsite facility. If this option is not available then work should be performed in designated areas only, while providing cover for materials stored outside, checking for leaks and spills, and containing and cleaning up spills immediately. Suitable Applications These procedures are suitable on all construction projects where an onsite yard area is necessary for storage and maintenance of heavy equipment and vehicles. Limitations Onsite vehicle and equipment maintenance should only be used where it is impractical to send vehicles and equipment offsite for maintenance and repair. Sending vehicles/equipment offsite should be done in conjunction with a Stabilized Construction Entrance/Exit. Outdoor vehicle or equipment maintenance is a potentially significant source of stormwater pollution. Activities that can contaminate stormwater include engine repair and service, changing or replacement of fluids, and outdoor equipment storage and parking (engine fluid leaks). Implementation If maintenance must occur onsite, use designated areas, located away from drainage courses. Dedicated maintenance areas should be protected from stormwater runon and runoff, and should be located at least 50 ft from downstream drainage facilities and watercourses. Drip pans or absorbent pads should be used during vehicle and equipment maintenance work that involves fluids, unless the maintenance work is performed over an impermeable surface in a dedicated maintenance area. Place a stockpile of spill cleanup materials where it will be readily accessible. All fueling trucks and fueling areas are required to have spill kits and/or use other spill protection devices. Use adsorbent materials on small spills. Remove the absorbent materials promptly and dispose of properly. Inspect onsite vehicles and equipment daily at startup for leaks, and repair immediately. Keep vehicles and equipment clean; do not allow excessive build—up of oil and grease. Segregate and recycle wastes, such as greases, used oil or oil filters, antifreeze, cleaning solutions, automotive batteries, hydraulic and transmission fluids. Provide secondary containment and covers for these materials if stored onsite. Train employees and subcontractors in proper maintenance and spill cleanup procedures. Drip pans or plastic sheeting should be placed under all vehicles and equipment placed on docks, barges, or other structures over water bodies when the vehicle or equipment is planned to be idle for more than 1 hour. Properly dispose of used oils, fluids, lubricants, and spill cleanup materials. Do not place used oil in a dumpster or pour into a storm drain or watercourse. Properly dispose of or recycle used batteries. Do not bury used tires. Repair leaks of fluids and oil immediately. Listed below is further information if you must perform vehicle or equipment maintenance onsite. Inspection and Maintenance Inspect and verify that BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect weekly to verify continued BMP implementation. Keep ample supplies of spill cleanup materials onsite. Maintain waste fluid containers in leak proof condition. Vehicles and equipment should be inspected on each day of use. Leaks should be repaired immediately or the problem vehicle(s) or equipment should be removed from the project site. Inspect equipment for damaged hoses and leaky gaskets routinely. Repair or replace as needed. VEHICLE AND EQUIPMENT FUELING Description and Purpose Vehicle equipment fueling procedures and practices are designed to prevent fuel spills and leaks, and reduce or eliminate contamination of stormwater. This can be accomplished by using offsite facilities, fueling in designated areas only, enclosing or covering stored fuel, implementing spill controls, and training employees and subcontractors in proper fueling procedures. Limitations Onsite vehicle and equipment fueling should only be used where it is impractical to send vehicles and equipment offsite for fueling. Sending vehicles and equipment offsite should be done in conjunction with a Stabilized Construction Entrance/ Exit. Implementation Use offsite fueling stations as much as possible. These businesses are better equipped to handle fuel and spills properly. Performing this work offsite can also be economical by eliminating the need for a separate fueling area at a site. Discourage "topping—off" of fuel tanks. Absorbent spill cleanup materials and spill kits should be available in fueling areas and on fueling trucks, and should be disposed of properly after use. Drip pans or absorbent pads should be used during vehicle and equipment fueling, unless the fueling is performed over an impermeable surface in a dedicated fueling area. Use absorbent materials on small spills. Do not hose down or bury the spill. Remove the adsorbent materials promptly and dispose of properly. Avoid mobile fueling of mobile construction equipment around the site; rather, transport the equipment to designated fueling areas. Train employees and subcontractors in proper fueling and cleanup procedures. Dedicated fueling areas should be protected from stormwater runon and runoff, and should be located at least 50 ft away from downstream drainage facilities and watercourses. Fueling must be performed on level—grade areas. Protect fueling areas with berms and dikes to prevent runon, runoff, and to contain spills. Nozzles used in vehicle and equipment fueling should be equipped with an automatic shutoff to control drips. Fueling operations should not be left unattended. Federal, state, and local requirements should be observed for any stationary above ground storage tanks. Inspection and Maintenance Vehicles and equipment should be inspected each day of use for leaks. Leaks should be repaired immediately or problem vehicles or equipment should be removed from the project site. Keep ample supplies of spill cleanup materials onsite. Immediately clean up spills and properly dispose of contaminated soil and cleanup materials. SOLID WASTE MANAGEMENT Description and Purpose Solid waste management procedures and practices are designed to prevent or reduce the discharge of pollutants to stormwater from solid or construction waste by providing designated waste collection areas and containers, arranging for regular disposal, and training employees and subcontractors. Suitable Applications This BMP is suitable for construction sites where the following wastes are generated or stored: Solid waste generated from trees and shrubs removed during land clearing, demolition of existing structures (rubble), and building construction Packaging materials including wood, paper, and plastic Scrap or surplus building materials including scrap metals, rubber, plastic, glass pieces and masonry products Domestic wastes including food containers such as beverage cans, coffee cups, paper bags, plastic wrappers, and cigarettes Construction wastes including brick, mortar, timber, steel and metal scraps, pipe and electrical cuttings, nonhazardous equipment parts, styrofoam and other materials send transport and package construction materials Implementation The following steps will help keep a clean site and reduce stormwater pollution: Select designated waste collection areas onsite. Inform trash—hauling contractors that you will accept only watertight dumpsters for onsite use. Inspect dumpsters for leaks and repair any dumpster that is not watertight. Provide an adequate number of containers with lids or covers that can be placed over the container to keep rain out or to prevent loss of wastes when it is windy. Plan for additional containers and more frequent pickup during the demolition phase of construction. Collect site trash daily, especially during rainy and windy conditions. Remove this solid waste promptly since erosion and sediment control devices tend to collect litter. Make sure that toxic liquid wastes (used oils, solvents, and paints) and chemicals (acids, pesticides, additives, curing compounds) are not disposed of in dumpsters designated for construction debris. Do not hose out dumpsters on the construction site. Leave dumpster cleaning to the trash hauling contractor. Arrange for regular waste collection before containers overflow. Clean up immediately if a container does spill. Make sure that construction waste is collected, removed, and disposed of only at authorized disposal areas. Collection, Storage, and Disposal Littering on the project site should be prohibited. To prevent clogging of the storm drainage system, litter and debris removal from drainage grates, trash racks, and ditch lines should be a priority. Trash receptacles should be provided in the contractor's yard, field trailer areas, and at locations where workers congregate for lunch and break periods. Litter from work areas within the construction limits of the project site should be collected and placed in watertight dumpsters at least weekly, regardless of whether the litter was generated by he contractor, the public, or others. Collected litter and debris should not be placed in or next to drain inlets, stormwater drainage systems, or watercourses. Dumpsters of sufficient size and number should be provided to contain the solid waste generated by the project. Full dumpsters should be removed from the project site and the contents should be disposed of by the trash hauling contractor. Construction debris and waste should be removed from the site biweekly or more frequently as needed. Construction material visible to the public should be stored or stacked in an orderly manner. Stormwater runon should be prevented from contacting stored solid waste through the use of berms, dikes, or other temporary diversion structures or through the use of measures to elevate waste from site surfaces. Solid waste storage areas should be located at least 50 ft from drainage facilities and watercourses and should not be located in areas prone to flooding or ponding. Inspection and Maintenance Inspect and verify that activity—based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect weekly to verify continued BMP implementation. Inspect BMPs subject to non—stormwater discharge daily while non—stormwater discharges occur Inspect construction waste area regularly. Arrange for regular waste collection. DE—WATERING AND PUMPING OPERATIONS Description and Purpose De—watering operations are practices that manage the discharge of pollutants when non—stormwater and accumulated precipitation must be removed from a work location so that construction work may be accomplished. Suitable Applications These practices are implemented for discharges of non—storm water from construction sites. Non—stormwaters include, but are not limited to, groundwater, water from cofferdams, water diversions, and waters used during construction activities that must be removed from a work area. Practices identified in this section are also appropriate for implementation when managing the removal of accumulated precipitation (stormwater) from depressed areas at a construction site. Limitations Site conditions will dictate design and use of dewatering operations. The controls discussed in this best management practice (BMP) address sediment only. The controls detailed in this BMP only allow for minimal settling time for sediment particles. Use only when site conditions restrict the use of the other control methods. Dewatering operations will require, and must comply with, applicable local permits. Implementation De—watering discharges must not cause erosion at the discharge point. A variety of methods can be used to treat water during de—watering operations. Several devices are presented below and provide options to achieve sediment removal. The size of particles present in the sediment and Permit or receiving water limitations on sediment are key considerations for selecting sediment treatment option(s); in some cases, the use of multiple devices may be appropriate. PUMP DISCHARGE HOSE FIN GRAVITY BAG FILTER Description: A gravity bag filter, also referred to as a dewatering bag, is a square or rectangular bag made of non—woven geotextile fabric that collects sand, silt, and fines. Appropriate Applications: Effective for the removal of sediments (gravel, sand, and silt). Some metals are removed with the sediment. Implementation: Water is pumped into one side of the bag and seeps through the bottom and sides of the bag. A secondary barrier, such as a rock filter bed or straw/hay bale barrier, is placed beneath and beyond the edges of the bag to capture sediments that escape the bag. Maintenance: Inspection of the flow conditions, bag condition, bag capacity, and the secondary barrier is required. Replace the bag when it no longer filters sediment or passes water at a reasonable rate. The bag is disposed of offsite. ---------- FLOW SEWN IN — SPOUT - WATER PUMP DANDY "'- DEWATERING BAG TIE DOWN STRAP PUMP DISCHARGE HOUSE--� FILTERING PAD TO BE 25'x25' IN LOCATIONS AS REQUIRED TO KEEP SEDIMENT FROM ENTERING WATERS OF THE U.S. DO NOT ALLOW DISCHARGE TO FLOW DIRECTLY TO TIE DOWN STRAP J- 1\ FILTERED 15'x15' DANDY DEWATERING WATER BAGS, CAPABLE OF FLOW RATES EQUAL TO OR GREATER THAN 95 GAL./MIN/SQ.FT OR APPROVED EQUAL. - 50' MIN. VEGETATED BUFFER BEFORE DISCHARGE ENTERS CREEK. IF NO BUFFER, INSTALL TEMPORARY SEDIMENT BASIN. WATERS OF U.S. \- COMPACTED SUBGRADE J (1) 6" COURSE D5o 6" RIP RAP AT #8 WASHED STONE OUTLET. IN ADEQUATE FILTERING PAD. QUANTITIES TO PREVENT EROSION. NOTE: CONTRACTOR IS RESPONSIBLE FOR DETERMINING HOW MANY DEWATERING BAGS ARE REQUIRED, THE LOCATION AND THE NUMBER AND SIZE OF PUMPS REQURIRED. IF CONTRACTOR FEELS THAT THE 25'x25' FILTERING PADS ARE INADEQUATE TO HOLD ENOUGH BAGS, HE SHALL DISCUSS ADDITIONAL LOCATIONS AND SIZES WITH THE ON-SITE ENGINEER. WHEN DEWATERING BAG IS FULL OF SEDIMENT, REMOVE BAG AND DEPOSIT SEDIMENT IN A LOCATION DETERMINED BY THE ON-SITE ENGINEER. DANDY DEWATERING BAGm ZrffiM(DDCAn0N1 1 NOTE: THE DANDY DEWATERING BAGO WILL BE MANUFACTURED IN THE U.S.A. FROM A NONWOVEN POLYPROPYLENE FABRIC THAT MEETS OR EXCEEDS THE FOLLOWING SPECIFICATIONS: AANAT AE(IATEPINr BA]7 TM Mechanical Properties Test Method Units MARV Grob Tensile Strength_ ASTM D 4832 kN Ibs 0.9 205 x 0.9 205 Grob Tensile Elon ation ASTM D 4832 % 50 x 50 Puncture Stron h ASTM D 4833 kN Ibs 0.58 130 Mullen Burst Strength ASTM D 3788 kPa i 2818 380 Trapezoid Tear Strength ASTM D 4533 kN lbs 0.38 80 X 0.38 80 UV Resistance ASTM D 4355 % 70 Apparent Open Size ASTM D 4751 Mm US Std Sieve 0.180 80 Flow Rate ASTM D 4491 1 min al min R 3888 95 Peffnitttft ASTM D 4491 1 Sed 1.2 DANDY DEWATERING BAG DE—WATERING PRACTICES DETAIL 1 C802 NOT TO SCALE 011 1, ,\ o.F N0. r LA20700037 r STATE OF ~ .9y. �NDI AN.P. 0" \�\�. cOE ARc,�`\``�. /OJ_tw� DATE GIX5=3 THIS DRAWING AND THE IDEAS, DESIGNS AND CONCEPTS CONTAINED HEREIN ARE THE EXCLUSIVE INTELLECTUAL PROPERTY OF THE SCHNEIDER CORPORATION, AND ARE NOT TO BE USED OR REPRODUCED, IN WHOLE OR IN PART, WITHOUT THE WRITTEN CONSENT OF THE SCHNEIDER CORPORATION. © COPYRIGHTED BY THE SCHNEIDER CORP. (2013) I lqqm f4lb Schneider THE SCHNEIDER CORPORATION Historic Fort Harrison 8901 Otis Avenue Indianapolis, IN 46216-1037 Telephone: 317.826.7100 Fax: 317.826.7200 www.schneidercorp.com Architecture Civil Engineering GIS * LIS Home Builder Services Interior Design Land Surveying Landscape Architecture Transportation Engineering O_ 0 w —A V � 4 LU <'� U) Q�w Q Q- Q U 4�- ■ 1 Z LL_ O Q L LU W Q— U Q ac N 0 Q LLi Lo LU QC � <