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� f <br /> SECOR '�6�60 Wa suite 100 <br /> INTERNATIONAL Rancho Cordova CA 95670 <br /> S E C O R <br /> INCORPORATED 916 861 0400 TEL <br /> 916-861-0430 FAx <br /> December 16, 2003 <br /> Ms Kasey L Foley <br /> County of San Joaquin <br /> Environmental Health Department <br /> 304 East Weber Avenue, 3rd floor ENV r�u <br /> Stockton, CA 95202 3f ISI i i I <br /> Mccs <br /> RE Fuel Line Upgrade Soil Sampling Report <br /> 7-Eleven Store Number 20632 <br /> 4627 Da Vinci Drive <br /> Stockton, California <br /> SECOR Project No 77EL 20632 43 0520 <br /> Dear Ms Foley <br /> SECOR International Incorporated (SECOR) has prepared this letter on behalf of 7-Eleven, Inc (7- <br /> Eleven) to document the soil sample results obtained during the fuel line upgrade activities <br /> conducted at 7-Eleven store No 20632 located at 4627 Da Vinci Drive in Stockton, California (Figure <br /> 1) This work was conducted in accordance with the requirements of the San Joaquin County, <br /> Environmental Health Department (SJCEHD) The soil sample collection was performed by SECOR <br /> Glacier Environmental Services, Inc was subcontracted by 7-Eleven to complete the fuel line <br /> upgrade activities <br /> INTRODUCTION <br /> The purpose of SECOR's project involvement was the collection of soil samples to assess <br /> subsurface conditions beneath the former dispenser islands Specifically, SECOR's scope of work <br /> consisted of the following tasks <br /> • Preparation of a site-specific Health and Safety Plan, <br /> • Collection of soil samples beneath the dispenser islands and product line trenching at the <br /> direction of the SJCEHD specialist, <br /> • Laboratory analysis of soil samples collected from beneath the dispensers and the product <br /> line trenching, <br /> • Preparation of this report documenting the line upgrade and soil sampling activities <br /> SITE BACKGROUND <br /> Initial site assessment activities were executed in accordance with directives from SJCEHD <br /> requirements (Fluor Daniel GTI 1997) The assessment concluded that soil impacted with gasoline <br /> appeared restricted to a limited area surrounding the underground storage tank (UST) pit and <br /> underlying the fuel dispensers The UST's were replaced in 1998 as part of upgrading requirements <br /> Concurrent with limited over excavation, several days of high-volume dewatering occurred as part of <br /> construction activities, which also served as a short-term remediation event <br /> I7-Elevenl7-11 Stores1206321Line Upgrade120632 Fuel Line Upgrade Report doc SECOR Intemationa!Incorporated <br />