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i <br /> r <br /> P <br /> Golden Grain Company <br /> 202/799-5045 <br /> August 3, 1988 <br /> SCS Engineers of Dublin, California, initiated site work by <br /> mbing on November 17, 1486. <br /> exhuming the tank and associated plu <br /> visual inspection of¢ vicithe excavationindicatedOf the <br /> During the process, <br /> a hydrocarbon release had occurred in the y <br /> pit. No information is currently available on inventory recon- <br /> ciliation atthe site. Also, there is no estimate of the <br /> quantity of regular leaded gasoline released. <br /> f� <br /> Eight monitoring wells (MW) were subsequently installed on <br /> ber 22, 1987. (see Figure <br /> site between February 4 and Decem <br /> MW--1 to 6 and MW-8 were drilled to between 25 and 30 feet tootf <br /> al <br /> depth, and screened from 10 feet below surface to the total <br /> depth. MW-7 was drilled to 50 feet below surface and screened at <br /> lowest 20 feet. soil and groundwater samples obtained from <br /> the <br /> teh impact are, captained <br /> the MW-8 borehole/well, downgradient at <br /> no detectable hydrocarbons. <br /> During the drilling of these soil borings, soil samples were <br /> intervals in a split-spoon down hale sampler. <br /> collected at 5-foot <br /> r of San <br /> Collected soil samples were analyzed by Anametrix Inc. <br /> Jose, California and SCS Analytical Laboratory of Lang Beach, <br /> California. Tabulated soil analysis data is presented in <br /> Appendix I. <br /> "rollowing the monitoring well installations, groundwater <br /> samples were periodically collected and analyzed by SCS Analyti- <br /> cal Laboratory of Long Beach. These tabulated results are <br /> presented in Appendix II . GTI monitored dand <br /> surveyed <br /> ls not ir�:all <br /> wells <br /> ed with <br /> at this site on June 20, 1988 and sample <br /> free product. This data was used to prepare Figure 3. <br /> 3 <br /> a a <br /> IBM <br />