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•SLI INC <br /> approximately 90% or more of the former field soil density. The excavation surface will <br /> be resurfaced with asphalt or other impermeable material to prevent surface water from <br /> migrating downward. <br /> Excavated soil will be screened using field techniques outlined in Appendix IV. <br /> Approximately 20 to 25 soil samples will be collected from the clean sidewalls and floor <br /> of the excavation to confirm soil conditions. Soil samples will be collected using protocol <br /> outlined in Appendix V. Samples will be analyzed for BTEX, TPH-G, and TPH-D. <br /> Excavated soil will be sorted into clean or impacted soil piles. Clean soil will be utilized <br /> for landscaping or other uses on-site. The hydrocarbon impacted soil will be placed on <br /> the existing remediation pad (Exhibit 2). The hydrocarbon impacted soil will be sampled <br /> at the rate specified in the aeration permit issued by the San Joaquin Valley Air Pollution <br /> Control District (VAD), and as required by the SJCLHD. The impacted soil will be <br /> covered with visqueen in accordance with the terms of the aeration permit. <br /> The contaminated soil pile characterization will be designed to focus on contamination <br /> previously identified during excavation analytical results. <br /> All underground piping associated with the concrete tank will be either removed or <br /> cleaned in place and filled with inert material. The concrete tank will be cleaned and all <br /> liquid removed into 55-gallon barrels. LEL and OVM instruments will be utilized during <br /> removal of the liquid from the tank to insure the Health and Safety of the workers. This <br /> liquid will be sampled for BTEX, TPH-G, TPH-D, and for chlorinated hydrocarbons by a <br /> California state certified laboratory. Liquid disposal options (industrial sewer versus off- <br /> site disposal facility) will be a function of the analytical results. <br /> Page 5 <br />