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Chevron Quarterly Groundwater Monitoring Report(3Q2000) Page 2 of 2 <br /> Facility #9-2033—508 West Charter Way,Stockton,CA Date December 15,2000 <br /> • DISCUSSION: <br /> This groundwater monitoring and sampling event was performed by Gettler-Ryan Inc on August 14, 2000 Three <br /> wells were sampled during this event TPHd was reported in MW-1 at a concentration of 170ppb TPHg was <br /> reported in MW-3 at a concentration of 4,800 ppb Benzene was reported in MW-3 at a concentration of 690 ppb <br /> MtBE was reported at a concentration of 3 5 ppb in MW-1 and 210 ppb in MW-3 Groundwater analytical results <br /> are generally consistent with historical data,with MtBE concentrations decreasing slightly in MW-1 and increasing <br /> slightly in MW-3 Groundwater elevations across the site decreased an average of approximately 0 88 feet this <br /> quarter Groundwater flow was to the east to northeast at 0 008 ft/ft <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 /> ef <br /> R J Hoffmor <br /> Project Manager <br /> ATTACHMENTS: <br /> • Attachment A—November 9,2000 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 /> Pearl Myer, 1 120 South Hunter Street, Stockton, CA 95206 <br /> 10 <br />