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'o <br /> z <br /> 3 <br /> x. <br /> d <br /> 4 <br /> AGS 87031-2 <br /> USA Station Pio. 110 <br /> Stockton, California <br /> w <br /> installation of two additional 2-inch inner-diameter monitoring <br /> and provide <br /> wells to further evaluate the extent of contamination <br /> data on Lf►e direction of ground-water flow. <br /> FIELD WORK AND METHODS <br /> ems personnel were present an August 16 and 20, <br /> Applied GeoSyst <br /> B-1 was drilled <br /> 1987 to drill soil borings B-1 and B-2• <br /> Boring <br /> +- It the product storage tanks near the margins of <br /> to the northwest <br /> the site. Soil Boring B-2 was dr,lled at the northeast edge of <br /> tanks. The borings were located so as <br /> the site, northeast of the <br /> evels at the margins of the site. <br /> to evaluate contaminant l <br /> Soil t,oring B-1 was drilled to a total depth of approximately <br /> 70.5 feet below the ground surface. Boring B-2 reached a total <br /> feet. The equipment ueed for the borings was a <br /> depth of 72.0 <br /> CME-75 drilling rig equipped with 7.5-ich-diameter hollow-stem <br /> n <br /> Inc. , of Pittsburg, <br /> augers and operated by Datum Exploration, <br /> California. The augers were steam cleaned prior to use and <br /> between borings in order to minimize the possibility of down-hole <br /> contamination. <br /> 5 <br /> A0,0#60' Geo.�Vstelns <br />