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Project No. 310-01. 01 <br /> March 20, 1990 <br /> Page 3 <br /> CONCLUSIONS <br /> Analytical results indicate that low levels of petroleum <br /> hydrocarbons remain in the soil adjacent to the excavation. <br /> A work plan should be prepared for submittal to the Public <br /> Health Services of San Joaquin County outlining a site <br /> assessment plan to determine the lateral and vertical <br /> extent of hydrocarbons in the soil and whether groundwater <br /> has been impacted. <br /> Based on the analytical results described previously, an <br /> "Underground Storage Tank Unauthorized Release <br /> (Leak)/Contamination Site Report" was issued on <br /> January 30, 1990 by the Public Health Services of San <br /> Joaquin County. <br /> If you have any questions concerning the content of this <br /> report, please call. <br /> Sincerely, <br /> /PACIFIC ENVIRONMENTAL GROUP, INC. <br /> yl,�,'✓��7 L G �/l <br /> Kathryn A. Quigley v <br /> Staff Engineer <br /> Robert K. Wenzlau, P.E. <br /> Senior Engineer <br /> cc: Laurie Cotulla, Public Health Services of <br /> San Joaquin County <br /> Tom Peltier, Central Valley Regional Water Quality <br /> Control Board <br /> Enclosures <br />