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- ---� <br /> �..,Fn <br /> 8. 1934L Service Station No. 5981, AGS Jcb No. 33032-1 <br /> Stocktoon previous workinthearea and converaatiunswith <br /> nel o£ the California Regional Watl Valle er �'ualitycontrol Board, <br /> y Region, the depth to first ground water is <br /> ted to be approximately 30 feet. Ground water is inferred <br /> e a southeasterly gradient based on reeanal data supplied <br /> fornia Water Service oPStccicton, Cal::so.rnia, and APPIiad <br /> elocs project sites located in the area. This gradient can <br /> y depending on seasonalfluctuation. of ground-water <br /> sand local ground-water pumping. i <br /> I f <br /> IFIELD WORK AND METHODS <br /> Initial work at the site began on May 13, 1388, when a geologist <br /> Prom Applied GeoSystems collected nine soil sam;des from 4-foot <br /> deep test pits located on each side of the two c;ispenser islands <br /> and cne located perpendicular to and at the soullern end of the <br /> dispenser islands. These samples were collecte:: in response to <br /> contamination encountered during installation of a gasoline_ <br /> blending system at the service station. Samples were collected <br /> using a hand operated percussion sampler to driv a clean brass <br /> sleeve into the soil immediately after it was brought to the <br /> surface in a backhoe bucket. Samples were then sealed with <br /> aluminum foil, a plastic cap, and air-tight tape, before being <br /> labeled and placed in iced storage. A Chain of Custody Record <br /> a <br /> [ s <br />