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WORK PLAN <br /> -' POTENTIALLY CONTAMINATED SOILS <br /> EL RANCHO ROCK & SAND, INC. QUARRY RECLAMATION <br /> PAGE 5 <br /> 3.5 Materials Storage in Containers/Stockpiles <br /> — Contaminated materials will be temporarily retained on-site in approved sealed storage <br /> containers, or stockpiled on an impervious surface, in a barricaded area. Stockpiles will <br /> be covered with plastic sheeting. Contaminated materials will be protected from <br /> volatilization until remedial treatment or disposal. <br /> 3.6 Materials Disposal <br /> Condor will investigate the alternatives for disposal or remediation for any contaminated <br /> materials encountered on site during implementation of the approved Reclamation Plan. <br /> -- Recommendations will be presented to El Rancho Rock & Sand, Inc. and the Department <br /> of Environmental Health for their review and approval. Condor will not sign Manifests <br /> for the transport and disposal of said materials. <br /> 4.0 LABORATORY ANALYSIS <br /> Potentially contaminated materials encountered during the reclamation operations can be <br /> analyzed by the following methods, for the following general groups of contaminants: <br /> — • Suspected or apparent petroleum hydrocarbons in soil <br /> Soil samples will be analyzed for benzene, toluene, ethyl benzene & xylene <br /> (BTEX) by EPA Method 8020, for total petroleum hydrocarbons, quantified as <br /> gasoline (TPH-G) by Method 5030/LUFT, and total extractable hydrocarbons, <br /> quantified as diesel, kerosene and motor oil (TEPH) by Method 3550/LUFT. <br /> • Suspected or apparent petroleum hydrocarbons in concrete <br /> — Concrete samples will be crushed to form a soil-like material. These samples will <br /> then be analyzed for total extractable hydrocarbons, quantified as diesel, kerosene <br /> and motor oil (TEPH) by Method 3550/LUFT. <br /> • Unknown compounds <br /> Unknown compounds can often be very difficult to identify if there is no <br /> indication of the type of contamination. Laboratory procedures are set up to <br /> -- analyze for concentrations of particular compounds, not to determine what type <br /> of unknown compound is present. Field screening and indications of prior site <br /> activities in the particular location where the contamination is encountered, <br /> therefore, will be used to determine which laboratory tests should be performed. <br /> Likely laboratory testing of soil samples that could be performed for screening <br />