Download the entire Volume 3 Criteria Manual - Urban Drainage ...
Download the entire Volume 3 Criteria Manual - Urban Drainage ... Download the entire Volume 3 Criteria Manual - Urban Drainage ...
S-2 Spill Prevention, Containment and Control • Drain or replace motor oil and other automotive fluids in a designated area away from storm sewer inlets. Collect spent fluids and recycle or dispose of properly. Never dispose of these fluids in the storm sewer or sanitary sewer. • In fueling areas, clean up spills with dry methods (absorbents) and use damp cloths on gas pumps and damp mops on paved surfaces. Never use a hose to “wash down” a fuel spill. • Where practical, reduce stormwater contact with equipment and materials by implementing indoor or covered storage, implementing stormwater run-on control measures and following good housekeeping practices. Identification of Spill Areas Identify potential spill areas, potential spill volumes, material types, frequency of material use, and drainage paths from spill areas with relation to storm sewer inlets, adjacent waterbodies, structural BMPs, and containment structures. Use this information to determine the types of spill prevention and control measures needed specific to the site conditions. Examples of potential spill locations include: • Loading and unloading areas • Outdoor storage areas • Outdoor manufacturing or processing activities • Waste disposal/storage areas • Areas that generate significant dust or particulates (that may be subsequently deposited on the ground) • Salt piles • Areas prone to spills based on past experience at the site • Locations where other routine maintenance activities occur such as equipment maintenance and cleaning, pesticide/fertilizer application, etc. Additionally, areas where smaller leaks may occur such as parking should also have basic spill cleanup procedures. Material Handling Procedures From a water quality perspective, the primary principle behind effective material handling practices is to minimize exposure to stormwater. This can be accomplished by storing the material indoors under weather-resistant covering, elevating the material off the ground by using pallets, and diverting stormwater around materials storage areas. Representative outdoor materials handling procedures include: • Keep bulk solid materials such as raw materials, sand, gravel, topsoil, compost, concrete, packing materials, metal products and other materials covered and protected from stormwater. • When practical, store materials on impermeable surfaces. • Store hazardous materials according to federal, state, and local hazardous materials requirements. SPCC-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3
Spill Prevention, Containment and Control S-2 • Adopt procedures that reduce the chance of spills or leaks during filling or transfer of materials. • Substitute less toxic or non-toxic materials for toxic materials. • Store containers that are easily punctured or damaged away from high traffic areas (i.e., adopt a materials flow/plant layout plan). • Add waste-capture containers such as collection pans for lubricating fluids. • Store drums and containers with liquid materials on impermeable surfaces and provide secondary containment where appropriate. Drums stored outdoors should be located on pallets to minimize contact with runoff. Spill Response Procedures and Equipment Spill response procedures should be tailored to site-specific conditions and industry-specific regulatory requirements. General spill response procedures include: • Containment and cleanup of spills should begin promptly after the spill is observed. • Sweep up small quantities of dry chemical or solids to reduce exposure to runoff. Shoveling may be used for larger quantities of materials. • Absorbents should be readily accessible in fueling areas or other areas susceptible to spills. • Wipe up small spills with a shop rag, store shop rags in appropriate containers, dispose of rags properly or use a professional industrial cleaning service. • Contain medium-sized spills with absorbents (e.g., kitty litter, sawdust) and use inflatable berms or absorbent “snakes” as temporary booms for the spill. Store and dispose of absorbents properly. Wet/dry vacuums may also be used, but not for volatile fluids. • Develop procedures and locations for containing and storing leaking containers. • Install drip pans below minor equipment leaks and properly dispose of collected material until a repair can be made. • For large spills, first contain the spill and plug storm drain inlets where the liquid may migrate offsite, then clean up the spill. • Excavation of spill areas to removed contaminated material may be required where large liquid spills occur on unpaved surfaces. • An inventory of cleanup materials should be maintained onsite and strategically located based on the types and quantities of chemicals present. Structural Spill Containment Measures Two general approaches are often used when implementing spill containment measures. The first approach is designed to contain the entire spill. The second approach uses curbing to route spilled material to a collection basin. Both containment berming and curbing should be sized to safely contain or convey to a collection basin a spill from the largest storage tank, rail car, tank truck, or other containment device in the possible spill area. The spill containment area must have an impermeable surface (e.g., November 2010 Urban Drainage and Flood Control District SPCC-3 Urban Storm Drainage Criteria Manual Volume 3
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Spill Prevention, Containment and Control S-2<br />
• Adopt procedures that reduce <strong>the</strong> chance of spills or leaks during filling or transfer of materials.<br />
• Substitute less toxic or non-toxic materials for toxic materials.<br />
• Store containers that are easily punctured or damaged away from high traffic areas (i.e., adopt a<br />
materials flow/plant layout plan).<br />
• Add waste-capture containers such as collection pans for lubricating fluids.<br />
• Store drums and containers with liquid materials on impermeable surfaces and provide secondary<br />
containment where appropriate. Drums stored outdoors should be located on pallets to minimize<br />
contact with runoff.<br />
Spill Response Procedures and Equipment<br />
Spill response procedures should be tailored to site-specific conditions and industry-specific regulatory<br />
requirements. General spill response procedures include:<br />
• Containment and cleanup of spills should begin promptly after <strong>the</strong> spill is observed.<br />
• Sweep up small quantities of dry chemical or solids to reduce exposure to runoff. Shoveling may be<br />
used for larger quantities of materials.<br />
• Absorbents should be readily accessible in fueling areas or o<strong>the</strong>r areas susceptible to spills.<br />
• Wipe up small spills with a shop rag, store shop rags in appropriate containers, dispose of rags<br />
properly or use a professional industrial cleaning service.<br />
• Contain medium-sized spills with absorbents (e.g., kitty litter, sawdust) and use inflatable berms or<br />
absorbent “snakes” as temporary booms for <strong>the</strong> spill. Store and dispose of absorbents properly.<br />
Wet/dry vacuums may also be used, but not for volatile fluids.<br />
• Develop procedures and locations for containing and storing leaking containers.<br />
• Install drip pans below minor equipment leaks and properly dispose of collected material until a<br />
repair can be made.<br />
• For large spills, first contain <strong>the</strong> spill and plug storm drain inlets where <strong>the</strong> liquid may migrate offsite,<br />
<strong>the</strong>n clean up <strong>the</strong> spill.<br />
• Excavation of spill areas to removed contaminated material may be required where large liquid spills<br />
occur on unpaved surfaces.<br />
• An inventory of cleanup materials should be maintained onsite and strategically located based on <strong>the</strong><br />
types and quantities of chemicals present.<br />
Structural Spill Containment Measures<br />
Two general approaches are often used when implementing spill containment measures. The first<br />
approach is designed to contain <strong>the</strong> <strong>entire</strong> spill. The second approach uses curbing to route spilled<br />
material to a collection basin. Both containment berming and curbing should be sized to safely contain or<br />
convey to a collection basin a spill from <strong>the</strong> largest storage tank, rail car, tank truck, or o<strong>the</strong>r containment<br />
device in <strong>the</strong> possible spill area. The spill containment area must have an impermeable surface (e.g.,<br />
November 2010 <strong>Urban</strong> <strong>Drainage</strong> and Flood Control District SPCC-3<br />
<strong>Urban</strong> Storm <strong>Drainage</strong> <strong>Criteria</strong> <strong>Manual</strong> <strong>Volume</strong> 3