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Chevron Groundwater Monitoring Report(I Q2002) Page 2 oft <br /> Facility 49-3232—8660 Lower Sacramento Road,Stockton,CA Datc April 9 2002 <br /> DISCUSSION: <br /> This groundwater monitoring and sampling event was performed by Gettler-Ryan Inc on January 23, 2002 <br /> Groundwater samples were collected from three wells during this event TPHg was detected in samples collected <br /> from two of the three wells, at concentrations of 5,000 pg/I in MW-2, and 310 µg/l in MW-3 Benzene was <br /> detected at concentrations of 420 pg/1 in the sample collected from MW-2 and 24 4g/l in the sample collected from <br /> MW-3 MtBE was detected in the sample collected from MW-3 at a concentration of 10 µg11,using EPA Method <br /> 8260 Depth to water across the site decreased by an average of approximately 4 49 feet from the previous quarter <br /> The groundwater flow direction was to the south at 0 004 ft/ft, consistent with the previous monitoring event <br /> LIMITATIONS- <br /> The findings presented in this letter are based on data and interpretations provided by Gettler-Ryan, Inc Gettler- <br /> Ryan's report is attached The data presented in this summary is accurate only to the degree implied by the sources <br /> and methods used No warranty,expressed or implied, is made by SECOR <br /> If you have any questions,please feel free to call us at(916) 861-0400 <br /> Sincerely, <br /> SECOR International Inc <br /> Brian Silva --"- <br /> Project Manager <br /> ATTACHMENTS: <br /> Attachment A—February 15,2002 Groundwater Monitoring& Sampling Report by Gettler-Ryan Inc <br /> cc Bob Cochran,Chevron Products Company, P O Box 6004, San Ramon, CA 94583-0804 <br /> Marty Hartzell, RWQCB-CVR,3443 Routier Road, Suite A,Sacramento,Ca 95827 <br /> Richard Berger, Berger&Company,667 East Canal Drive,Turlock, CA 95380-4095 <br /> • <br />