Laserfiche WebLink
• If drums must be kept uncovered, store them at a slight angle to reduce <br />ponding of rainwater on the lids to reduce corrosion. Domed plastic <br />covers are inexpensive and snap to the top of drums, preventing water <br />from collecting. <br />Material Storage Areas and Secondary Containment Practices: <br />• Liquids, petroleum products, and substances listed in 40 CFR Parts <br />110, 117, or 302 shall be stored in approved containers and drums and <br />shall not be overfilled. Containers and drums shall be stored in <br />temporary secondary containment facilities. <br />• Temporary secondary containment facilities shall provide for a spill <br />containment volume able to contain precipitation from a 25 year, 24 <br />hour storm event, plus 10% of the total enclosed container volume of <br />all containers, or 110% of the capacity of the largest container within <br />its boundary, whichever is greater. <br />• Secondary containment facilities shall be impervious to the materials <br />stored therein for a minimum contact time of 72 hours. <br />• Secondary containment facilities shall be maintained free of <br />accumulated rainwater and spills. In the event of spills or leaks, <br />accumulated rainwater and spills shall be collected and placed into <br />drums. These liquids shall be handled as hazardous waste unless <br />testing determines them to be non-hazardous. <br />• Sufficient separation should be provided between stored containers to <br />allow for spill cleanup and emergency response access. <br />• During the wet weather season (Oct 1— April 30), each secondaiy <br />containment facility shall be covered during non-working days, prior <br />to and during rain events. <br />• Keep material storage areas clean, organized and equipped with an <br />ample supply of appropriate spill clean-up material (spill kit). <br />• The spill kit should include, at a minimum: <br />• 1-Water Resistant Nylon Bag <br />• 3-Oil Absorbent Socks 3"x 4' <br />• 2-Oil Absorbent Socks 3"x 10' <br />• 12-Oil Absorbent Pads 17"x19" <br />• 1-Pair Splash Resistant Goggles <br />• 3-Pair Nitrile Gloves <br />• 10-Disposable Bags with Ties <br />• Instructions <br />4-46 Volume 11— Construcfion Stormwater Pollution Prevention February 2005 <br />