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Chevron Groundwater Monitoring Report(I Q2002) Page 2 of 2 <br /> Facility 49-1848—1257 Yosemite Avenue,Manteca,CA Date April 4,2002 <br /> • <br /> DISCUSSION: <br /> This groundwater monitoring and sampling event was performed by Gettler-Ryan Inc on January 10,2002 Three <br /> wells were sampled during this event MtBE concentrations were reported in the sample collected from well C-3 by <br /> EPA Method 8260 at 92 µg11 Groundwater elevations across the site increased an average of approximately 2 l2 <br /> feet this quarter Groundwater flow was calculated to be to the north at approximately 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 /> KeL <br /> Ro r Hoffmorc <br /> Project Manager <br /> ATTACHMENTS• <br /> • Table 1 —Screen Intervals <br /> • Attachment A—February 5,2002 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 />