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ROGER <br /> F(?DTT DRAFT <br /> October 9, 199ASSOCIATES <br /> Jnii No. 125-9-1--t") <br /> G OTECHNICAL, GEOLOGIC & ENVIRONMENTAL SERVICES <br /> C'na-nin Brothei-s, Inc. <br /> MAY 3 <br /> 1203 <br /> North Cantor Avenue <br /> Stockton, California 952703 <br /> Attention: Mi. Russell Chapin <br /> Subject: Work Plan for Tank Removal <br /> 1766 Mo.nte Diablo Avenue <br /> SI-C) CalifoI n_,'a <br /> Nh-. ChapLn: <br /> Roger Foott Associates, Inc., presents the following work plan which <br /> -u <br /> d�=n-bes propos d procedures associated with removal of underground fuel storage <br /> L f. 0 <br /> 1%1 <br /> -'tes from the Chapin Brot'ners,serVice station and auto repair facility located at 1766 <br /> I'vIci nt e D i a 1L.Z10 Allvei-ntic !,n Stockton, California. <br /> BA-C-KC,RP-,T-j-NTD <br /> Th-- site currei-i-2-y contains two 4,000-gallon and two 8,000-gallon <br /> underground storage tanks and one underground waste oil tank. The tanks are <br /> thought to be 17 to 40 years old. The site is covered by asp-halt and concrete paving <br /> and the sit%-, building. Two 8,000-gallon underground tanks are present in the <br /> nortbeaste-m. quadrant of the site; they contained super unleaded and regular ieaded <br /> gasoline fur retail sale. `1'wo 4,000-gallon tanks along the northwestern edge of the <br /> site are, ,nanlfbidedtogether and stored regular unleaded gasoline. One 500-gallon <br /> waste oil tank is present between the site building and the eastern property line. <br /> We previously conducted a subsurface environmental investigation to <br /> evaluate soil and groundwater conditions at site. The investigation included drilling <br /> one soil boring to a depth of approximately 35 feet and installing one monitoring <br /> well. T soil encountered in the soil boring consisted of sandy silt in the upper 12 ft <br /> W'd slightly silty sand from 12 ft to at least 35 ft. Three soil sampies and one <br /> gu.omidwater s,,;rr.pJe were tested for total petroleum_ hydrocarbons as gasoline <br /> (J'Phg), and for benzene, toluene, ethylibenzene, and total xylene isomers (BT"EX). <br /> 1450 Harbor BoOevard, Suite Go West Sacraniento,CA 95691 a (916) 325-2580 o Fax (916) 325-2570 <br />