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i <br /> Chevron Groundwater Monitoring Report(IQ2001) Page 2 of 2 <br /> Facility #9-9840-4344 Waterloo Road,Stockton,CA Date April 12,2001 <br /> i <br /> DISCUSSION: <br /> This groundwater monitoring and sampling event was performed by Gettler-Ryan Inc on February 23,2001 TPHg <br /> was reported in one well and,benzene and MtBE were reported in two of the three wells sampled TPHg <br /> concentrations were reported at 140 ppb in MW-1 Benzene concentrations were reported at 1 5 ppb in MW-1 and <br /> 0 70 ppb in MW-2 MtBE concentrations(by EPA Method 8260)were reported at 230 ppb in MW-1 and 14 ppb in <br /> MW-2 Groundwater elevations across the site increased an average of approximately 1 01 feet this quarter <br /> Groundwater flow was to the northeast at 0 002 fL/ft, consistent with historical data <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 /> oge offmor <br /> Project Manager <br /> ATTACHMENTS: <br /> • Table i —Screen Intervals <br /> • Attachment A—March 16,2001 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 Routter Road, Suite A, Sacramento, CA 95827 <br />