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r , <br /> I <br /> Chevron Groundwater Monitoring Report(2Q2001) Page 2 of 2 <br /> Facility 49-1848— 1257 Yosemite Avenue,Manteca CA Date July 13,2001 <br /> DISCUSSION: <br /> This groundwater monitoring and sampling event was performed by Gettler-Ryan Inc on May 23,2001 Three <br /> wells were sampled during this event TPHg were reported in the sample from well C-I at a concentration of 60 <br /> pg/1 Laboratory test results reported benzene as non-detectable in samples for all of the wells MtBE <br /> concentrations were reported in sample from well C-I at 2 8 µg11 and in the sample from well C-2 at 15 pg/I MtBE <br /> in well C-2 was confirmed using EPA Method 8260B with a reported concentration of 14 µg/1 Groundwater <br /> elevations across the site decreased an average of approximately 0 65 feet this quarter Groundwater flow was <br /> 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 Inc <br /> William E Brasher, P E <br /> Project Manager <br /> ATTACHMENTS: <br /> • Table I —Screen Intervals <br /> • Attachment A--June 19,2001 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 />