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r <br /> Chevron Quarterly Groundwater Monitoring Report(3Q2000) Page 2 of 2 <br /> facility 49-9840—4344 Waterloo Road Stockton CA Date January 23 2001 <br /> • <br /> DISCUSSION: <br /> This groundwater monitoring and sampling event was performed by Gettler-Ryan Inc on September 26,2000 <br /> Three wells were sampled during this event TPHg,benzene, and MtBE were reported in two of the three wells <br /> TPHg concentrations were reported at 179 ppb in MW-1 and 164 ppb in MW-2 Benzene concentrations were <br /> reported at 12 2 ppb in MW-I and 30 1 ppb in MW-2 MtBE concentrations(by EPA Method 8260) were reported <br /> at 130 ppb in MW-1 and 22 ppb in MW-2 Analytical results for this quarter show a slight increase in <br /> concentrations in the wells Groundwater elevations across the site decreased an average of approximately 5 78 feet <br /> this quarter Groundwater flow was to the northeast at 0 003 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 1nc <br /> Gable <br /> Senior Geologist <br /> ATTACHMENTS: <br /> • Attachment A—November 21,2000 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 />