Laserfiche WebLink
3164 Gold Camp DrFve <br /> Delta it `iii)))]� 2oD <br /> ncho <br /> Cordova CA 95670 <br /> En�ironenentai 61638 2085 <br /> Consultants,Inc X 816;638-8385 <br /> January 6, 1998 t <br /> ENVIRONMENTAL �l� <br /> EfIC <br /> Ms Marla D Guensler �A9 <br /> Exxon Company, U S A <br /> 2300 Clayton Road, Suite 640 <br /> Concord, California 94520 E�VPERMPSERViCESL�H <br /> Subject Quarterly Ground WaterMomtonng Report, Fourth Quarter 1997 <br /> " Former Exxon Service Station No 7-3708 <br /> 2705 Country Club Boulevard <br /> Stockton, California <br /> Delta Project No D093-809 <br /> Dear Ms Guensler <br /> Delta Environmental Consultants, Inc (Delta), has been authorized by Exxon Company, U S A <br /> (Exxon),to conduct quarterly ground water monitoring at Exxon Service Station No 7-3708 located at <br /> 2705 Country Club Boulevard, Stockton, California The location of the site is shown in Figure 1 and <br /> site features are illustrated in Figure 2 The quarterly monitoring program is intended to monitor the <br /> distribution of dissolved petroleum hydrocarbon constituents in ground water at the site <br /> This report presents the results of quarterly monitoring activities conducted during the fourth quarter <br /> 1997 These activities included ground water elevation measurements and the collection of ground <br /> water samples for chemical analyses of petroleum hydrocarbon constituents Field work conducted at <br /> the site was performed in accordance with the field methods and procedures presented in Enclosure A <br /> Ground Water Table Elevation Flow Direction and Hydraulic Gradient <br /> On November 24, 1997, ground water measurements were recorded in monitoring wells MW-I through <br /> MW-8 Depth to ground water m the wells ranged from 8 82 (MW-5)to 1171 (MW-2) feet below the <br /> top of the well casings Ground water elevations have increased an average of 0 08 feet since the <br /> previous monitoring event conducted on August 20, 1997 Cumulative ground water table <br /> measurements are presented in Table I <br /> A ground water elevation contour map, constructed from the ground water elevations recorded on <br /> November 24, 1997, is included as Figure 3 Based on the ground water elevation contours,the ground <br /> water flow direction was generally to the northeast, across the site, with an average hydraulic gradient <br /> of less than 0 01 <br /> Sub ective Analysis <br />` Liquid-phase petroleum hydrocarbons were not observed in any of the monitoring wells during the <br /> fourth quarter 1997 site visit <br /> Providing a Competitive Edge <br />