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4` <br /> hi T r L Y <br /> 1� <br /> ® SECOR www secor com <br /> f r { ® INTERNATIONAL 3017 Kilgore Road Suite 100 <br /> r <br /> L t= 6'f `f F' `�? t INCORPORATED Rancho Cordova CA 95670 <br /> L` y t+ 916-861-0400 TEL <br /> V' <br /> L- 916 861-0430 rAx <br /> 03 QCT 3 0 P� 1: 35 <br /> October 27, 2003 �Cj <br /> Jeffrey Wong <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> RE Third Quarter 2003 Groundwater Monitoring Report <br /> Chevron Station 9-9840 <br /> 4344 Waterloo Road <br /> Stockton, California <br /> SECOR Project No 77CH 00000 09 0022 <br /> Dear Mr Wong <br /> SECOR International Incorporated is providing this report to summarize the third quarter <br /> groundwater monitoring event at the above referenced site <br /> COMPLETED ACTIVITIES - THIRD QUARTER 2003 <br /> Conducted quarterly groundwater monitoring and sampling <br /> • Prepared and submitted quarterly groundwater monitoring report <br /> PLANNED ACTIVITIES - FOURTH QUARTER 2003 <br /> • Conduct quarterly groundwater monitoring and sampling <br /> • Prepare and submit quarterly groundwater monitoring report <br /> DISCUSSION <br /> On July 10, 2003, Gettler-Ryan Incorporated (G-R) performed the third quarter groundwater <br /> monitoring and sampling event for 2003 G-R's Groundwater monitoring report is included as <br /> Attachment 1 Depth to groundwater across the site ranged from 67 11 to 69 98 feet below ground <br /> surface (bgs) Groundwater across the site decreased an average of 2 87 feet from the previous <br /> sampling event The groundwater flow direction was reported to the north at an approximate <br /> gradient of 0 0002 to 0 002 feet per foot (ft/ft) Seven wells were sampled during this event A <br /> summary of laboratory data is listed below <br /> 11Chevron1998401Penodic Monitonng120031302003 QMR 99840 doc SECOR International Incorporated <br />