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CBROWN AND CALDWELL 40th Anniversary 1947-1987 <br /> CONSULTING ENGINEERS Service • Excellence • Eflk ency <br /> May 12, 1987 <br /> Mr. Dan Moe, R.S . ENVIROMENTAE HEALTH <br /> Environmental Health Division <br /> FERIAIT/SERVICES <br /> San Joaquin Local Health District <br /> Post Office Box 2009 <br /> Stockton, California 95201 017-3338-02/1 Ck <br /> Subject: Closure Plan for ARCO Station 6020 , Manteca <br /> ��Fs <br /> fe cd <br /> Dear Mr. Moe: S L ,pr <br /> Enclosed, in duplicate, is Brown and Caldwell ' s (BC) Permanent <br /> Closure/Tank Removal Plan for the removal of one 240-gallon waste <br /> oil tank at ARCO Station 6020 located at 1711 East Yosemite Avenue, <br /> Manteca, California. Enclosed with the plan is a site plot map, a <br /> copy of the contractor' s certificate of insurance, and a signed <br /> "Release of Authorization" form. Slim Blackman, an employee of the <br /> contractor, John Snodgrass, has indicated that he will complete the <br /> San Joaquin County Local Health District (County) tank removal <br /> permit application. <br /> After approval of this plan, we will contact the County to schedule <br /> an inspection of the site. It is understood by BC that a County <br /> representative will be on site during tank removal to designate the <br /> quantity and locations of soil samples to be taken. <br /> Each sample will be collected in a 2-inch- by 6-inch-diameter brass <br /> tube, which will be fitted into a hand-operated drive sampler. The <br /> sampler will be driven into undisturbed soil, free of sluff. The <br /> sample tube will then be removed from the sampler, the ends <br /> visually inspected to identify lithology, and capped with aluminum <br /> foil , plastic caps, and tape to provide an airtight seal. Each <br /> sample will be labeled on site to show date, project number, sample <br /> location, and depth interval. The sealed samples will be stored on <br /> ice and protected from meltwater. <br /> Between each borehole, all sampling equipment will be washed with <br /> laboratory-grade detergent, rinsed with tap water, then rinsed with <br /> deionized water. The soil samples collected at the ARCO Station <br /> 6100 site will be submitted to Eureka Laboratory in Sacramento and <br /> analyzed for U.S. Environmental Protection Agency (EPA) 8010 , EPA <br /> 8015 modified , EPA 8020 , and EPA 8080 . Eureka Laboratory is <br /> certified by the California Department of Health Services for <br /> hazardous waste analysis . Their certification number is 108 . <br /> 723 S STREET SACRAMENTO,CA 95814 • (916)444-0123 <br />