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r <br /> The samples will be analyzed for the following compounds <br /> • Total purgeable petroleum hydrocarbons (TPH-G)by U S Environmental <br /> Protection Agency (USEPA) Method 503018015, and <br /> • Benzene, toluene, ethylbenzene, and xylenes (BTEX) by USEPA Method <br /> 8020 <br /> 5 5 Soil Stockpiling and Sampling <br /> The pea gravel, sand fill material, native soil excavated from the UST cavity, and from <br /> the piping trenches will be stockpiled on-site A Roux geologist will examine the <br /> excavated soil visually and with a photoionization detector (PID) to assist in segregating <br /> the soil stockpiles Composite samples will be collected from the stockpiles to <br /> characterize the soil for disposal <br /> Roux will collect four soil samples from each 100 cu yds of stockpiled soil To <br /> prepare the soil for sampling, six to twelve inches of soil will be scraped away from the <br /> surface of the stockpile. Samples will be collected from the prepared surface Stockpile <br /> samples will be collected in stainless steel tubes and prepared for transport to the <br /> laboratory in the same manner utilized when sampling the product line trenches <br /> The stockpile samples will be delivered to Sequoia for chemical analyses Cham-of- <br /> Custody documentation will be maintained for all samples Sequoia will combine each <br /> set of four stockpile samples into one composite sample for analysis The composite <br /> samples will be analyzed for TPH-G by USEPA Method 5030/8015 and BTEX by <br /> USEPA Method 8020. <br /> 56 Aeration and Disposal of Stockpiled Soil <br /> Disposal options for the stockpiled soil will be evaluated following receipt of the <br /> laboratory analytical data Results of the analyses will be submitted to the PHS-EHD. <br /> Soil which is acceptable for disposal in a Class III landfill will be hauled to Browning- <br /> Ferns Industries (BFI) facility in Livermore, California If any of the soil contains levels <br /> 6 Doc #AI59w01.15 <br />