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SECOR www secor com <br /> INTERNATIONAL 3017 Kilgore Road SWe 100 <br /> S E C ® R INCORPORATED Rancho Cordova CA 95670 <br /> 916-861-0400 TEL <br /> 916-681-0430 FAX r <br /> r <br /> r <br /> October 26, 2004 _ <br /> t <br /> ,4 <br /> Ms Vicki McCartney OCT 2 7 2004 <br /> San Joaquin County ' <br /> Environmental Health Department ENVIE3MRENT HE:AITl s a <br /> 304 East Weber Avenue, Third Floor PEE MI-1/SEWICES <br /> Stockton, California 95202-2708 _\P1 <br /> RE Thrid Quarter 2004 Groundwater Monitoring Report lti1 <br /> Chevron Station 9-2033 <br /> 508 West Charter Way <br /> Stockton, California �V .ttti <br /> SECOR Project No 77CH 00000 23 0009 Q� <br /> Dear Ms McCartney ; <br /> SECOR International Incorporated (SECOR), on behalf of Chevron Environmental Management x <br /> Company (Chevron) has provided this report to summarize results of the third quarter 2004 <br /> (2Q2004) groundwater monitoring event at the above-referenced site <br /> COMPLETED ACTIVITIES -THIRD QUARTER 2004 <br /> Conducted quarterly groundwater monitoring and sampling, and, <br /> Prepared and submitted quarterly groundwater monitoring report <br /> PLANNED ACTIVITIES - FOURTH QUARTER 2004 <br /> ■ Conduct quarterly groundwater monitoring and sampling, and, <br /> ■ prepare and submit quarterly groundwater monitoring report <br /> DISCUSSION <br /> On August 9, 2004, Gettler-Ryan Incorporated (G-R) performed 3Q2004 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 22 58 to 23 08 feet below ground surface (bgs) Groundwater elevation <br /> across the site decreased an average of 1 21 feet from the previous sampling event Groundwater � <br /> flow was calculated to the northeast at an approximate gradient of 0 01 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 /> 1 4Chevron1920331Penodic Monitonng`iWM302004 QMR 92033 doc SECOR International incorporated <br />