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10 <br /> QPSECOR www secor com <br /> NTERNATIONAL 3017 Kilgore Road Suite 100 <br /> S E C ® R INCORPORATED Rancho Cordova CA 95670 P <br /> 916 861-0400 TEL <br /> 916 861-0430 FAx i <br /> I <br /> July 16, 2004 <br /> Mr Michael Infurna <br /> San Joaquin County Environmental Health o s d E' <br /> 304 East Weber Avenue, Third Floor a, � � <br />' Stockton, California 95202 2l3` <br /> J Cr-W <br /> RE UST Site Assessment Report <br /> Chevron Bulk Fuel Terminal 1001621 r E <br /> 22888 Kasson Road <br /> Banta, California <br /> SECOR Project No 77CH 11621 210170 <br /> I�SS� <br /> Dear Mr Infurna I , <br /> SECOR International Incorporated (SECOR), on behalf of Chevron Environmental <br /> Management Company (Chevron), presents this assessment report for the above- �p <br /> referenced site (Figure 1) The purpose of this site assessment was to evaluate soil and <br /> groundwater quality in the area surrounding the former 1,000-gallon transmix underground , y <br /> storage tank (UST) removed in March 2003 This work was performed as outlined in <br />` SECOR's Work Plan for Site Assessment Activities, dated July 23, 2003 This Work Plan <br /> was approved by the California Regional Water Quality Control Board (RWQCB) and the F <br /> San Joaquin County Environmental Health Department (County) as indicated in their 1 <br /> letters, dated August 28, 2003 (Attachment 1) " <br /> SITE DESCRIPTION �1 <br /> The site is an active bulk fuel terminal located approximately 5 miles east of Tracy, in the a <br /> agricultural community of Banta, California The terminal has been in operation since 1966, <br /> and consists of nine aboveground fuel storage tanks (AST), tank-truck loading racks, <br /> above- and belowground piping, a storage building, and an office with a service bay The $a,� <br /> ASTs are enclosed by a 3-foot high secondary containment berm A portion of this berm ' <br /> forms a spill containment area located in the northern portion of the terminal Fuel lines <br /> from the fuel storage tanks run above ground within the secondary containment area The <br /> fuel lines run under the paved portion of the terminal below ground between the secondary <br /> containment area and the tank-truck loading racks The transmix UST is located east of kr�a <br /> AST#139 and dust north of the office <br /> i � <br /> The San Joaquin Groundwater Basin underlies the site Beneficial uses of groundwater in <br /> the area include municipal, domestic, irrigation, stock watering, process, and service <br /> supply Historical groundwater gradient flows in a northeasterly direction A site history is �I <br /> presented in Attachment 2 <br /> I 1Chevron11001621\REPORTS120041UST Site Assessment Report doc <br />