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� S <br /> Chevron Quarterly Groundwater Monitoring Report(3Q2000) Page 2 of 2 <br /> acdrty 49-1848—1257 Yosemite Avenue,Manteca,CA Date November 10,2000_ <br /> DISCUSSION: <br /> This groundwater monitoring and sampling event was performed by Gettler-Ryan tnc on August 3,2000 Three <br /> wells were sampled mp ed during this event TPHg and benzene were reported in C-1 at concentrations of 190 ppb and <br /> 0 67 ppb respectively, and MtBE concentrations were reported in C-2 at 7 5 ppb and C-1 at 6 2 ppb,which were <br /> increases from last quarter Groundwater analytical results for C-3 were non detectable,which was consistent with <br /> historical data Groundwater elevations across the site decreased an average of approximately 149 feet this quarter <br /> Groundwater flow was northeast at 0 005 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 /> i <br /> oger offmore <br /> Probe Manager <br /> ATTACHMENTS: <br /> • Attachment A—October 19,2000 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 Routter Road, Suite A, Sacramento,CA 95827 <br /> Donna Feletto, Pan Pacific Retail Properties, 8785 Center Parkway, Suite B-350, Sacramento,CA 95823 <br /> Greg Gurss,Gettler-Ryan Inc, 3164 Gold Camp Drive, Suite 240 Rancho Cordova, CA 95670 <br />