ARCHIVED REPORTS_XR0009070 - Laserfiche WebLink

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IF FUEL OIL NO. 2 1 Combustible Liquid TECIWIQUE MECHANICAL REMOVAL .. . Contaminated soil and spilled product may be removed by shovels, motorized graders and scrapers, loaders, bulldozers, and draglines. ' CONSEQUENCE Removal equipment may become contaminated and present a hazard to later users. Incompatible equipment may be damaged or corroded. Improper storage of removed materials may result in future spread of contamination. MITIGATION Decontaminate all equipment atter use. Use equipment compatible with spilled product. Store contaminated materials in safe and seem location. iWATER SPILL TECMWQvE STOP USE ... Notify downstream industrial, municipal,and public users to stop water intake or to monitor water for contamination. CONSEQUENCE Alternative water supplies may be needed to accommodate users. MITIGATION Provide alternative water supplies as needed until water supply is declared safe. TECMWQUE FLOATING BOOMS/BARRIERS . .. Oil spill containment booms of compatible material may be deployed. Alternatively, mesh or nets may be strung across stream and anchored every 6-8 feet. Straw or peat placed on upstream side of mesh should absorb and retard spreading of spilled product. CONSEQUENCE Leakage may occur under or through barrier if high waves or current present or if not properly deployed. Incompatible materials may be damaged by spilled product. Booms, barrier materials, and deployment equipment may be contaminated. Fire hazards pose risk to response personnel. and equipment. MITIGATION Proceed with caution. Stage barriers in series where necessary. Recover spilled product as soon as possible. Decontaminate equipment after use. Dispose of waste materials in proper and safe manner. Use compatible equipment. Eliminate ignition sources. TECmuQUE WATER BY-PASS DAMS .. .Streams may be provided with a by-pass dam.This is a dam made of ' compacted earth,clay,or other material with open tubes or pipes passing through under water. Upstream ends of pipes or tubes should be well below the layer of floating contaminant. Downstream ends should be at a higher elevation but still below the floating layer. Valves may be installed on downstream ends to control water flow. CONSEQUENCE Earthen dams may become saturated with water and seep through or collapse.An insufficient number of by-pass tabes or pipes or additional water may cause overflow. MITIGATION Use sufficient number and capacity of tubes or pipes. Be alert to conditions that may lead to dam overflow or collapse. Remove spilled product as soon as passible. TECHMQVE DIVERSION...Where other means are unavailable,floating slicks may be temporarily herded. diverted,or controlled using water hose streams,small boat propeller wash or chemical surface tension modifiers known as spill herders. CONSEQUENCE Hose streams and propeller washes have limited applicability and effectiveness.The latter may cause undesired mizang of spilled product and water due to estieme agitation. Chemicwl spill herders should not be used until approval is obtained froom autharmed envirm=entsl officials. MITIGATION i Use other means if available.