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n ' <br /> Chevron Groundwater Monitoring Report QQ2001) Page 2 of 2 <br /> Facility 99-9840-4344 Waterloo Road,Stockton CA Date October 2,2001 <br /> DISCUSSION: <br /> This groundwater monitoring and"sampling event was performed by Gettler-Ryan Inc on July 23,2001 Three <br /> monitoring wells were monitored and sampled during this event TPHg was detected at a concentration of 65 µg/l <br /> in the sample collected from MW-I Benzene was detected at a concentration of 0 61 µg11 in the sample collected <br /> from MW-I MtBE was detected using EPA Method 8260 at concentrations of 180 µg11 in the sample collected <br /> from MW-I and 37 Ng/l in the sample collected from MW-2 Groundwater elevations across the site decreased an <br /> average of approximately 4 45 feet this quarter Groundwater flow was to the northeast at 0 002 ft/ft, consistent <br /> 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 Internattonal Inc <br /> William E Brasher, P E <br /> Project Manager <br /> ATTACHMENTS: <br /> • Table I —Screen Intervals <br /> • Attachment A—August 24,2001 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 Budisehch,4514 Waterloo Road, Hwy 88, Stockton,CA 95215 <br /> Kevin Lee, Subway,4410 Waterloo Road, Stockton, CA 95215 <br /> • <br />