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E <br /> IW <br /> Chevron Quarterly Groundwater Monitoring Report(3Q2000) Page 2 of 2 <br /> Faculty 09-6171 —6633 Pacific Avenue,Stockton,CA Date February 5,2001 <br /> • DISCUSSION: <br /> This groundwater monitoring and sampling event was performed by Gettler-Ryan Inc on August ]5,2000 Seven <br /> wells were sampled during this event TPHg was reported in six of the wells sampled at concentrations ranging <br /> from 110 ppb in MW-4 to 330 ppb in MW-7 Benzene was reported in four of the wells at concentrations ranging <br /> from 0 51 ppb in MW-3 to 1 6 ppb in MW-2 MtBE was reported in three of the wells at concentrations of 2 6 ppb <br /> in MW-2, 5 9 ppb in OW-1, and 14 ppb m MW-6 Groundwater analytical results were generally consistent with <br /> historical data Groundwater elevations across the site decreased an average of approximately 2 13 feet this quarter <br /> Groundwater flow was to the north at 0 03 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(9I6)861-0400 <br /> Sincerely, <br /> SECOR Inter I Inc <br /> Scott Gable <br /> Senior Geologist <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 /> Wilbur Smith 11, Sims-Grupe Management, 374 Lincoln Center, Stockton, CA 95207 <br /> Donald Bradshaw, Levine-Fricke-Recon, 1900 Powell Street, 12" Floor,Emeryville,CA 94608-1827 <br />