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Newark Sierra <br /> Page 2 <br /> Further investigation in this area is required. A work plan to delineate the <br /> lateral and vertical extent of the petroleum hydrocarbons in this area <br /> should be submitted to PHS/EHD by December 1, 1997. Continuous core <br /> drilling or probing should be used so that soil samples can be obtained from <br /> discrete intervals. In January 1997 the depth to water in monitoring wells at the <br /> site was-8 to 9 feet below grade. Therefore, the investigation should include <br /> obtaining ground water samples from borings for analysis. The collection of soil <br /> samples beneath ground water will be required since the soil samples beneath <br /> the sump and UST's were collected at 8 feet and 12 feet below grade, so it is <br /> known that the soil contamination now extends below ground water and the soil <br /> contamination must be defined vertically. <br /> Enclosed is an application for the State Water Resources Control Board Cleanup <br /> Fund. PHS/EHD recommends you apply to the Cleanup Fund for <br /> reimbursement of your corrective action costs. <br /> If you have any questions or need assistance in completing the Cleanup Fund <br /> application contact me at (209) 468-3449. <br /> Donna Heran, RENS, Director <br /> Environmental Health Division <br /> Margaret Lagorio, Supervising REHS <br /> Environmental Health Division <br /> Enclosure <br /> c: CVRWQCB - Pat Anderson <br />