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3330 Data Drive <br /> Delta Sate 100 <br /> Rancho Cordova CA 95670 <br /> . >*nvrronmental 916/638-2085 <br /> Consultants,Inc FAX 916/638-8385 <br /> L YM <br /> ""CENVED <br /> JAN 2 5 1993 <br /> January 21, 1993 ENVIRONMENTAL. HEALTH <br /> PERMIT/SERVICES <br /> c0p)v <br /> Mr Wade Broughton <br /> General Mills <br /> Post Office Box 3002 <br /> Lodi, California 95241-1906 <br /> Subject Quarterly Monitoring Report, Fourth Quarter 1992 <br /> General Mills Facility <br /> 20W West Turner Road <br /> Lodi, California <br /> Delta Project No 40-92-708 <br /> • Dear Mr Broughton <br /> Delta Environmental Consultants, Inc (Delta), has been authorized by General Mills Incorporated <br /> (General Mills), to conduct a hydrogeologic investigation and assessment of the former underground <br /> fuel oil tank location at the General Mills facility located at 2000 West Turner Road, Lodi, <br /> San Joaquin County, California The location of the site is shown in Figure 1 and site features are <br /> shown in Figure 2 <br /> Introduction <br /> This letter report presents the results of the most recent quarterly monitoring activities including <br /> ground water level measurements and sampling for chemical analysis of petroleum hydrocarbon <br /> constituents The field work was conducted at the site in accordance with the field methods and <br /> procedures presented in Enclosure A <br /> Ground Water Table Elevation Measurements <br /> A total of three on-site monitoring wells were measured for depth to ground water on <br /> December 15, 1992 (Figure 2) The ground water table was measured at the site between <br /> approximately 41 and 42 feet below the surface Ground water level measurements recorded to date <br /> are compiled in Table 1 Ground water level measurements collected on December 15, 1992, were <br /> used to construct the water table contour map shown in Figure 3 The primary direction of ground <br /> water flow is toward the southwest with a hydraulic gradient of approximately 0 003 <br /> Delta Delivers Solutions <br />