ARCHIVED REPORTS XR0003465 - Laserfiche WebLink

Home Browse Search

3330 Data Drive Deka 100 ��. 9 Cordova CA 95670 Environmental 916!636/63 8 2085 Consultants,Inc FAX 916/638 8385 R F LEft F E B 2 6 1992 ENV IRONMEfl� i A�_ HF��1 f PER MIT/3'"i,1`I�,� February 6, 1992 Ms Marla Guensler Marketing Division Exxon Company U S A 2300 CIayton Road, Suite 1250 Concord, California 94520 Subject Quarterly Monitoring Report, Fourth Quarter of 1991 Exxon Station RIS No 7-3708 2705 Country Club Boulevard, Stockton, California Delta Project No 40-91-838 Dear Ms Guensler Delta Environmental Consultants, Inc (Delta), has been authorized by Exxon Company U S A (Exxon), to conduct quarterly monitoring at the Exxon service station located at 2705 Country Club Boulevard, Stockton, California (Figure 1) This letter report contains the latest quarterly ground water analytical results and water level data for this site Ground water samples and water level measurements were collected from three on-site monitoring wells (MW-1, MW-2, and MW-3) on December 13, 1991 Monitoring wells and facility locations are illustrated in Figure 2 All field activities were conducted using procedures described in Enclosure A Ground water levels measured in the monitoring wells MW-1, MW-2, and MW-3 since August 23, 1991, are compiled in Table 1 Depth to ground water measured on December 13, 1991, ranged from 15 40 to 16 81 feet below grade The elevations of the monitoring wells were surveyed using a California Department of Transportation bench mark (No 1618L) which has an elevation of 0 728-feet above mean sea level Between August 29 and December 13, 1991, the ground water elevations decreased 0 12 to 0 17 foot in monitoring wells MW-1 through MW-3. Ground water level measurements collected on December 13, 1991, indicate the direction of ground water flow across the site is to the northeast with a gradient of approximately 0 001 (Figure 3) Delta Delivers Solutions