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GEOMATRIX <br /> between 28.0 to 37.0 feet bgs. Soil samples from borings GMX-2 through GMX-7 were <br /> collected from either the interval of the soil core that visually appeared to be most affected by <br /> petroleum hydrocarbons, or, if no petroleum-affected soil was observed, from just above the <br /> water table. The samples were collected in 6-inch stainless steel sleeves, sealed with Teflon <br /> sheets, plastic end caps, and tape. Soil cuttings are stored on-site in a covered steel bin pending <br /> proper disposal. Following sampling, the boreholes were grouted from the bottom to within <br /> one foot of the ground surface with cement grout. <br /> A groundwater sample was collected from a previously installed monitoring well located on the <br /> Western Farm Service property (WFSMW-1; Figure 3) and downgradient of the subject site. <br /> Prior to sampling, the well was purged according to Geomatrix protocols using a 2-inch <br /> Grundf6s pump. To obtain a groundwater sample representative of the water-bearing zone <br /> screened by the well, a minimum of four casing volumes of water were removed from the well. <br /> The boring log from this well was also reviewed by Geomatrix for indications of residual <br /> petroleum hydrocarbon in soil (e.g. staining); none was observed. <br /> A grab groundwater sample was collected from downgradient boring GMX-6. Prior to <br /> sampling, a 2-inch-diameter PVC casing with screen (0.020-inch slot)was installed to the <br /> bottom of the boring. The grab groundwater sample was collected in accordance with <br /> Geomatrix protocols using a disposable polyethylene bailer and decanted into acidified 40- <br /> milliliter volatile organic analysis vials and I-liter amber bottles provided by the laboratory. At <br /> the time of boring GMX-6, former fuel pump islands were observed on the property at the <br /> northeast corner of the intersection of Welty Road and State Highway 33. According to Mr. <br /> Don Guzenhau$er, Site Manager for the 35275 Welty Road site, this property was operated as a <br /> 1 Union Gasoline Station from at least 1972 until the mid 1980s. <br /> All samples were labeled, sealed in plastic bags, and stored in an ice-cooled chest for delivery <br /> to Friedman and Bruya, Inc., of Seattle, Washington, under Geomatrix chain-of-custody <br /> procedures. <br /> Soil samples collected from borings GMX-2 through GMX-7 were submitted for analyses for <br /> total petroleum hydrocarbons (TPH) quantified as crude oil (TPHC; C9-C36carbon range) by <br /> Environmental Protection Agency (EPA) Method 8015M; for benzene, toluene, ethylbenzene, <br /> �l and xylenes (BTEX)by EPA Method 8260B; and for polynuclear aromatic hydrocarbons <br /> ® (PAHs) by EPA Method 8270C SIM. The soil samples collected from boring GMX-1 were <br /> submitted for analyses for volatile organic compounds (VOCs) by EPA Method 8260B. <br /> 3 <br /> Lc DOC SAFE15000S%5380\SOIL GW RPT.DOC <br />