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Chevron Groundwater Monitoring Report(3Q2001) Page 2 of 2 <br /> Facility #9-1848— 1257 Yosemite Avenue,Manteca,CA Date October 8,2001 <br /> i <br /> DISCUSSION. <br /> This groundwater monitoring and sampling event was performed by Gettler-Ryan Inc on July 12,2001 Three <br /> wells were sampled during this event Laboratory test results reported TPHg and benzene as non-detectable in <br /> samples for all of the wells MtBE concentrations were reported in sample from well C-2 at 45 pg/l MtBE in well <br /> C-2 was confirmed using EPA Method 8260B with a reported concentration of 110 µg/l Groundwater elevations <br /> across the site decreased an average of approximately 2 18 feet this quarter Groundwater flow was northeast at <br /> 0 02 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 /> Rog offmore <br /> Project Manager <br /> ATTACHMENTS• <br /> • Table I --Screen Intervals <br /> • Attachment A—August 2,2001 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 /> Donna Feletto, Pan Pacific Retail Properties, 8785 Center Parkway, Suite B-350, Sacramento, CA 95823 <br /> • <br />