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Working To Restore Nature <br /> 1710 Main Street <br /> Escalon, CA 95320 <br /> Phone (209) 838-3507 <br /> FAX (209) 838-3509 <br /> January 13, 1993 <br /> Mr Michael Infurna JAN t <br /> San Joaquin County Public Health Services �Vll �l <br /> Environmental Health Division PERMIT%���������,�'H <br /> P 4 Box 2009 <br /> Stockton, California 95201 <br /> RE � Fourth Quarter 1992 Groundwater Monitoring Report,King Island Resort, 11530 <br /> W Eight Mile Road, Stockton, CA Site Code 1557 <br /> Dear Mr Infurna <br /> Enclosed are the Fourth Quarter 1992 groundwater monitoring results for the above referenced <br /> site (Figure 1) Groundwater monitoring and sampling was conducted by RESNA Industries, <br /> Inc (RESNA) personnel on December 2, 1992. Water level measurements were collected from <br /> each monitoring well prior to purging and sampling (Attachment 1). Water levels have <br /> decreased an average of 0 11 feet since the last monitoring event in September 1992 (Table 1) <br /> A groundwater gradient map was cried using the data collected on December 2, 1992 (Figure <br /> 2) Groundwater flows northeastward, away from the slough, with a gradient of 0 066 feet/feet <br /> or approximately 350 feet/mile <br /> Subsequent to monitoring, each wejlk(MW1 - MW5) was purged by extracting a minimum of <br /> approximately 3 well using volumes While purging, the groundwater parameters (temperature, <br /> conductivity, and ) were monitored and allowed to stabilize before water samples were <br /> collected The samples were transported to and analyzed by state-certified RESNA <br /> Environmental Laboratones in Fremont, California <br /> Samples were analyzed for benzene, toluene, ethylbenzene, and total xylenes (BTEX) using EPA <br /> Method 8020 and, total petroleum hydrocarbons as gasoline (TPHG) and total petroleum <br /> hydrocarbons as diesel (TPHD) using modified EPA Method 8015. Monitoring Wells MW 1, <br /> MW2, and MW3 did not contain detectable concentrations of the petroleum hydrocarbon <br /> constituents Monitoring wells MW4 and MWS contained low to moderate levels of BTEX and <br /> TPHG TPHD was detected only in well MW4 The approximate extent of dissolved <br />• <br /> QR121392 FNL <br /> J <br />