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SECOR wom secorcom <br /> INTERNATIONAL 3017 Kilgore Road Suite 100 i <br /> (� ® INCORPORATED Rancho Cordova,CA 95670 <br /> 916-861 0400 TEL <br /> 916 861 0430 fax <br /> 1J <br /> January 24, 2003s � #; <br /> m <br /> >> p <br /> 1 <br /> Margaret Lagorio <br /> San Joaquin County Public Health Services �P NLS'"ASH, <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor til` <br /> Stockton, CA 95202 p� <br /> r� <br /> RE Chevron Groundwater Monitoring Report (402002) ; <br /> Chevron Station 9-6258 <br /> 2409 East Main Street f <br /> Stockton, California T <br /> SECOR Protect No 77CH 00000 00 0017 <br /> Dear Ms Lagorio <br /> SECOR International Incorporated is providing this report to summarize the recently <br /> completed groundwater-monitoring event at the above referenced site The site is located at 2409 ,A <br /> East Main Street, Stockton, California <br /> ACTIVITIES COMPLETED FOURTH QUARTER 2002 LA <br /> Conducted quarterly groundwater monitoring and sampling Prepared and submitted quarterly <br /> groundwater monitoring report <br /> PROPOSED ACTIVITIES FOR FIRST QUARTER 2003 <br /> Conduct quarterly groundwater monitoring and sampling Prepare and submit quarterly groundwater <br /> monitoring report <br /> k <br /> DISCUSSION <br /> This groundwater monitoring and sampling event was performed by Gettler-Ryan Inc on October <br /> 18th, 2002 Groundwater samples were collected from two wells MW-3 was not sampled due to' <br /> insufficient water No concentrations of TPHg, benzene, or MtBE were detected above the <br /> laboratory reporting limit in groundwater samples collected from wells MW-1 or MW-2 Groundwater <br /> elevation across the site decreased an average of approximately 1 92 feet this quarter Groundwater <br /> b <br /> flow was to the southeast at 0 002 ft/ft, consistent with historical data <br /> LIMITATIONS " <br /> The findings presented in this letter are based on data and interpretations provided by Gettler-Ryan, <br /> Inc Gettler-Ryan's report is attached The data presented in this summary is accurate only to the ' <br /> degree implied by the sources and methods used No warranty, expressed or implied, is made by <br /> SECOR <br /> V k <br /> • r� y <br /> , I <br /> 1 IChevron196258IPenodic Monrtorrng420021402002 OMR 96258 doc SECOR Intemat,onat Incorporated <br />