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5k � <br /> Working To Restore Nature <br /> 09 <br /> 1710 Main Street <br /> Escalon, CA 95320 <br /> Phone (209) 838-3507 <br /> FAX (209) 838-3509 <br /> Apnl 26, 1994 <br /> Ms Margaret Lagono <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P O Box 2009 <br /> Stockton, CA 95201 <br /> Subject Monitoring and Sampling Report <br /> January through March 1994 <br /> Holt Bros , Site Code 1988 <br /> 1541 West Charter Way, Stockton, California <br /> Ms Lagorio <br /> This letter report will serve to document monitoring and sampling activities from January <br /> through March 1994 at the above referenced site (Figure 1) Groundwater monitoring and <br /> sampling was conducted on March 23, 1994 Activities included monitoring of the six <br /> groundwater wells on-site, sampling five groundwater monitoring wells for analysis of dissolved <br /> hydrocarbons and halogenated volatile organics and measuring the thickness of free product in <br /> well MW 1 <br /> GROUNDWATER MONITORING AND SAMPLING <br /> RESNA personnel performed groundwater monitoring and sampling on March 23, 1994 Field <br /> work consisted of measuring depth to water (DTW) in all wells and subjectively analyzing the <br /> water from wells MW2, MW3, MW4, MW5, and MW6 for the presence of sheen and floating <br /> product Well locations are shown on Figure 2 The depth-to-water in the wells ranged from <br /> 24 40 to 26 48 feet below the top of the well casings, an average water level increase of <br /> approximately 1 07 feet since the last monitoring event in September 1993 However, the <br /> increase in water levels was not uniform across the site The average increase in wells MW1, <br /> MW2 and MW4 was 0 72 feet, while the average increase in wells MW3, MW5, and MW6 was <br /> 1 42 feet. Groundwater monitoring data since December 1990 are summarized in Table 1 <br /> 1500771QUARTLYIIQR-1994 FNL <br />