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Corporation . <br /> 4005.Port Chicago Highway <br /> • ,,�,.: Concord, CA 94520-1120 <br /> Tel. 925.288.9898 J <br /> hy^ Fax. 925.288:0888 <br /> VA*FOPHsvu - 01 OCT22� � 2: 59 A Member of The IT Group <br /> October 17,2001 <br /> Mr.Bob DeNinno <br /> 7-Eleven,Inc. <br /> 3130 S. Owyhee Street <br /> Boise, Idaho 83705 <br /> Subject: -> Workplan for Additional Assessment and Feasibility Testing <br /> ,7-Eleven Site No.21756 <br /> 853 East Yosemite Avenue <br /> Manteca, California <br /> IT Corporation Project 781723 <br /> Dear Mr. DeNinno: <br /> In accordance with the request of the San Joaquin County Public Health Services/Environmental Health <br /> Department(SJCEHD) (letter August 10,2001, received by IT Corporation September 25,2001),the <br /> following outlines proposed additional vertical/lateral assessment of dissolved methyl tertiary butyl ether <br /> (MTBE) and hydrocarbons at the referenced site (Figures 1 and 2,Attachment 1). In addition, proposed <br /> feasibility testing for:remediation is discussed. As discussed with the SJCEHD,the original deadline for <br /> submittal of this workplan was revised from September 10,2001,to October 20, 2001. <br /> WORKPLAN FOR ADDITIONAL SITE ASSESSMENT <br /> Qualitative Risk:Evaluation <br /> Sensitive Receptors <br /> Past reports on sensitive receptors indicate that the nearest potential receptor is an active municipal well <br /> located about 2,000 feet downgradient of the site. This well is 155 feet deep,with the top of its screen at a <br /> depth of about 65 feet below.grade.Therefore,this site is considered to be of a small risk to sensitive <br /> receptors. <br /> I <br /> G <br />