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� , 1 <br /> Chevron Groundwater Monitoring Report(2Q2002) Page 2 of 2 <br /> Facility #9-9840—4344 Waterloo Road Stockton,CA Date June 20,2002 <br /> DISCUSSION: <br /> This groundwater monitoring and sampling event was performed by Gettler-Ryan Inc on April 4,2002 Three <br /> monitoring wells were sampled during this event TPHg was detected in the samples collected from MW-1 and <br /> MW-2 at concentrations of 53 µg/1 and 65 gg/l,respectively Benzene was detected in the sample collected from <br /> MW-2 at a concentration of 0 81µg/1 MtBE was detected using EPA Method 8260 at concentrations of 98 µg/1 in <br /> the sample collected from MW-1 and 57 µg1l in the sample collected from MW-2 Groundwater elevations across <br /> the site increased an average of approximately 2 61 feet this quarter Groundwater flow was to the northeast at 0 002 <br /> ft/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 /> r <br /> Brian Silva <br /> Project Manager <br /> ATTACHMENTS: <br /> • Table 1 —Screen Intervals <br /> • Attachment A—May 7,2002 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 /> Joseph Budiselich,4514 Waterloo Road, Hwy 88,Stockton,CA 95215 <br /> Kevin Lee, Subway,4410 Waterloo Road,Stockton,CA 95215 <br /> i <br />