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rt <br /> SECOR <br /> December 19, 2000 <br /> Mr Marty Hartzell <br /> California RWQCB Central Valley Region <br /> 3443 Routier Road, Suite A <br /> Sacramento, Ca 95827-3098 <br /> Subject: Quarterly Monitoring and Sampling Report (Q412000) <br /> Ranch Market <br /> 23569 Santa Fe Road <br /> Riverbank, California <br /> SECOR Protect No. 077.42083.008 <br /> Dear Mr Hartzell <br /> SECOR International Incorporated (SECOR) submits this quarterly report to summarize the <br /> methods and results of fourth quarter 2000 groundwater monitoring and sampling for the above <br /> referenced-site (Figures 1 and 2, Attachment 1) <br /> iGroundwater monitoring and sampling were conducted on November 16, 2000, to determine <br /> water table elevation and the distribution of dissolved hydrocarbons in the site-related <br /> groundwater monitoring wells <br /> BACKGROUND <br /> The site is located at the southwestern intersection of Santa Fe Road and Henry Road in <br /> Riverbank, California (Figure 1) Facilities onsite consist of a single story bnck building with a <br /> septic tank and leach field The remainder of the Site is covered with asphalt paving Currently <br /> the Site is being used as a muni-market without gasoline service <br /> Underground Storage Tank Removal <br /> On May 20, 1991, three underground storage tanks (UST) were removed from a common tank <br /> pit (Figure 2) Strong hydrocarbon odors and discolored soil was observed by SJCEHD in the <br /> tank pit following removal of the tanks Tank pit floor soil samples collected at depths of 9 to 11 <br /> feet below ground surface (bgs) contained reportable concentrations of gasoline range petroleum <br /> hydrocarbons (Attachment 2, Table 1) <br /> File Riverbank 06 40 <br /> ;01- AI1�otr' Road Ntrrlr 100 h'amho (01dol 11 950-U WO 161 0ino 9M 1 Ur),() I(it rrnx � ni c ,»1 <br />