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r <br /> Working To Restore Nature <br /> 1710 Main Street <br /> Escalon, CA 95320 <br /> Phone (209) 838-3507 <br /> FAX (209) 838-3509 <br /> October 7, 1994 <br /> 150070.01 --� <br /> Mr Steve Sasson <br /> San Joaquin County Public Health Services <br /> Environmental. Health Division <br /> P O Box 2009 <br /> Stockton, CA 95201 <br /> Subject Third Quarter 1994 Groundwater Monitoring and Sampling Report, Chase <br /> Chevrolet, 423 North Madison Street, Stockton, California <br /> Dear Mr Sasson: <br /> This letter report details RESNA Industries' (RFSNA's) groundwater monitoring and sampling <br /> activities during the third quarter of 1994 at the above referenced site (Plate 1). Activities <br /> during the quarter included monitoring of groundwater, sampling for dissolved hydrocarbons <br /> from eight of the nine monitoring wells on-site, free product removal from well MW-3 and <br /> evaluating the petroleum hydrocarbon concentrations in the groundwater at the site An <br /> automatic free product recovery system was also installed in well MW-3. <br /> GROUNDWATER SAMPLING <br /> RESNA personnel performed quarterly groundwater monitoring and free product recovery on <br /> June 3, July 1, and August 5, 1994 Groundwater sampling was conducted on August 5, <br /> 1994 Field work consisted of measuring the depth-to-water, subjectively analyzing the water <br /> from wells MW-1 through MW-9 for the presence of sheen and floating product, measuring <br /> the thickness of floating product, and purging and sampling eight monitoring wells Well <br /> �} MW-3 was not sampled due to the presence of free product The water table elevation of <br /> wells MW-1 through MW-7 has risen approximately 0 74 feet since the previous monitoring <br />