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SECOR <br /> www secor com <br /> INTERNATIONAL 3017 Kilgore Road Suite 100 <br /> S E (C ® R INCORPORATED Rancho Cordova CA 95670 <br /> 91661-0400 Tri <br /> 916-061-0430 Fnx <br /> July 30, 2004 ^ECENED <br /> JUL 3 0 2004 z <br /> Ms Vicki McCartney � <br /> San Joaquin County ENVIRONMENT HEALTH <br /> Environmental Health Department <br /> 304 East Weber Avenue, Third Floor PERMIT/SERVICES fa� 1L� <br /> Stockton, California 95202-2708 <br /> RE Second Quarter 2004 Groundwater Monitoring Report <br /> Chevron Station 9-2033 <br /> 508 West Charter Way <br /> Stockton, California <br /> SECOR Project No 77CH 00000 23 0009 <br /> Dear Ms McCartney <br /> SECOR International Incorporated (SECOR), on behalf of Chevron Environmental Management <br /> Company (Chevron) has provided this report to summarize results of the second quarter 2004 <br /> (2Q2004) groundwater monitoring event at the above-referenced site <br /> COMPLETED ACTIVITIES - SECOND QUARTER 2004 <br /> o Conducted quarterly groundwater monitoring and sampling, and, <br /> u Prepared and submitted quarterly groundwater monitoring report <br /> PLANNED ACTIVITIES -THIRD QUARTER 2004 <br /> ■ Conduct quarterly groundwater monitoring and sampling, and, <br /> A Prepare and submit quarterly groundwater monitoring report <br /> DISCUSSION <br /> On May 10, 2004, Gettler-Ryan Incorporated (G-R) performed 2Q2004 groundwater monitoring and <br /> sampling G-R's groundwater monitoring report is included in Attachment A Depth to groundwater <br /> across the site ranged from 21 25 to 22 02 feet below ground surface (bgs) Groundwater elevation <br /> across the site increased an average of 0 65 feet from the previous sampling event Groundwater <br /> flow was calculated to the northeast at an approximate gradient of 0 007 feet per foot (ft/ft) A <br /> summary of total petroleum hydrocarbons as gasoline (TPHg), total petroleum hydrocarbons as <br /> diesel, benzene, and methyl tertiary butyl ether(MtBE) laboratory analytical data is listed below <br /> Zj Ja <br /> 11ChevroM92033LAenodre Monrtonng120044202004 QMR 92033 doc SECOR International Incorporated <br /> h <br />