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I <br /> Working To Restore Nature <br /> 1710 Main Street <br /> Escalon, CA 95320 <br /> Phone (209) 838-3507 <br /> FAX (209) 838-3509 <br /> January 20, 1995 4 1995 <br /> 150091 01 <br /> Ms Mary Meays q'lj�s <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P O Box 2009 <br /> Stockton, CA 95201 <br /> Subject. Fourth Quarter 1994 Groundwater Monitoring for KOK Realty, 2403 W Navy <br /> Drive, Stockton, California <br /> Dear Ms Meays <br /> This letter report summarizes field work completed by RESNA Industries Inc (RESNA) at <br /> 2403 W. Navy Drive, Stockton, California during the fourth quarter of 1994 The site <br /> '-3— location is shown on Plate 1 <br /> BACKGROUND <br /> The site was the location of one underground storage tank In response to a San Joaquin <br /> County Public Health Services, Environmental Health Division (PHS/EHD) request for a <br /> subsurface investigation, RESNA was engaged by the law firm of McDermott, Will & Emery <br /> to assess the nature and extent of soil and groundwater,contamination at the site <br /> In early 1992 a RESNA field geologist observed the drilling of three soil borings (MW1, <br /> MW2, and MW3) at the site to characterize subsurface conditions Groundwater was <br /> encountered at a depth of approximately 15-16 feet below ground surface The borings were <br /> advanced to a depth of approximately 30 feet below grade and subsequently converted to <br /> groundwater monitoring wells <br /> Laboratory analysis of soil samples collected from the three bonngs determined that petroleum <br /> hydrocarbon constituents were detected in the soil within 4-5 feet of the static water levels at <br /> the site Laboratory analysis of groundwater samples collected from the wells subsequent to <br /> development indicated that gasoline constituents were present above laboratory method <br /> detection limits in the groundwater samples collected from each site monitoring well Initial <br /> 1500911QUARTM4QR-1994 doc 1 <br /> 5 - - <br />