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l <br /> W � � <br /> Chevron Groundwater Monitoring Report(4Q2001) Page 2 of 2 <br /> Facility 49-9840—4344 Waterloo Road Stockton,CA hate January 2,2002 <br /> �) DISCUSSION: <br /> This groundwater monitoring and sampling event was performed by Gettler-Ryan Inc on October 5,2001 Three <br /> monitoring wells were monitored and sampled during this event TPI-Ig was detected at a concentration of 89 Ag/l <br /> in the sample collected from MW-2 Benzene was detected at a concentration of 1 4 µg/1 in the sample collected <br /> from MW-2 MtBE was detected using EPA Method 8260 at concentrations of 23 µg11 in the sample collected from <br /> MW-1 and 25 µg/l in the sample collected from MW-2 Groundwater elevations across the site decreased an <br /> average of approximately 3 53 feet this quarter Groundwater flow was to the north at 0 003 ft/ft, consistent with <br /> 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 feet 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 1 —Screen Intervals <br /> • Attachment A—November 1,2001 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 /> Joseph Budiselich,4514 Waterloo Road, Hwy 88, Stockton,CA 95215 <br /> Kevin Lee, Subway, 4410 Waterloo Road, Stockton, CA 95215 <br /> • <br />