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Mr. Jim Walsh Jul ,• 0• ' July 15, 1988 Page 3 1 1986, 3rd Edition. Samples to be analyzed for high boiling point hydrocar- bons (HBPH) or semivolatile organics will be collected by filling 250- milliliter wide-mouth glass jars with soil cuttings from the auger bucket at the appropriate sampling intervals . After collection, the glass jars will be sealed with Teflon-lined lids . Samples to be analyzed for gasoline/benzene, toluene, and xylene (BTX) will ' be collected with a 2-inch diameter core soil sampler. Before collection , the soil sampler will be fitted with a stainless steel liner. Next, the sampler will be driven into the undisturbed soil beyond the base of the boring at the appropriate sampling interval using a 10-pound hammer with a ' 20-inch drop. The sampler will then be retrieved from the boring and the liner will be removed from the sampler . The liner wi11 be wrapped with Teflon, capped with polypropylene caps, and placed in a screwtop glass jar. ' After each use, all soil sampling equipment will be decontaminated by steam- ing with deionized water . All samples will be labeled during sample ' collection and chain-of-custody documentation will be initiated. The samples analyzed on site will be composited based on weight by the state-certified mobile laboratory personnel . Samples taken from the same depth within each sample zone will be composited, as illustrated in Table 1 . After composit- ' ing, the samples will be analyzed by the mobile laboratory for HBPH and gas/BTX. Some of the samples will be transported to an alternate state- certified laboratory for analysis of semivolatile organic compounds . ' Analytical Parameters and Procedures ' Analytical Parameters The most likely pond contaminants are oil and diesel in storm-water runoff , originating from trucks parked throughout the facility. Therefore all ' samples chosen for analysis will be tested for HBPH as oil and diesel . Selected samples will also be analyzed for gasoline, BTX, and semivolatile organic compounds, to confirm or deny their presence. ' Table 2 presents a summary of the analysis plan for the pond composite samples . All surface and 3-foot composite samples will be analyzed for HBPH ' as diesel and oil . The 2-foot composite samples will only be analyzed if the 3-foot composite sample from the respective sampling zone contains less than 100 parts per million (ppm) of HBPH . If a 3-foot composite sample contains greater than 100 ppm of HBPH, 4-foot samples will be collected and ' a composite sample will be prepared from the respective sampling zone and analyzed . In addition , surface and 2-foot composite samples from the northwest corner and the middle row will be analyzed for gasoline/BTX and ' semivolatile organic compounds . Drainage ditch samples collected at 2 feet below the surface will be analyzed for HBPH. If a 2-foot sample contains less than 100 ppm of HBPH , ' the surface sample from that location will be analyzed. If a 2-foot sample contains greater than 100 ppm of HBPH , the surface sample will not be