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Chevron Quarterly Groundwater Monitoring Report(3Q2000) Page 2 of 2 <br /> Facility #9-3232—8660 Lower Sacramento Road,Stockton CA Date December 15 2000 <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 TPI-Ig was reported in all three wells at concentrations of 75 3 ppb in <br /> MW-1, 59 0 ppb m MW-3,and 4,780 ppb in MW-2 Benzene was reported in MW-2 at a concentration of 986 ppb <br /> MtBE was reported in MW-3 at a concentration of 5 8 pph using EPA Method 8260 Analytical results indicate a <br /> general slight decrease of petroleum hydrocarbons during this event Groundwater elevations across the site <br /> decreased an average of approximately 4 94 feet this quarter Groundwater flow was undetermined(historical data <br /> indicate an easterly flow direction) <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 /> i� <br /> Roge o more <br /> Project Manager <br /> ATTACHMENTS <br /> • Attachment A—November 27, 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 /> Richard Berger, Berger& Company, 667 East Canal Drive,Turlock, CA 95380-4095 <br />