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. M9-1G-' 7C7 1G:.dea 1L:M--Lll LLLIUI 1 UKLLL.M ILL NU:4i9ti-'773-13.57 Pela rar -.----- <br /> �IB: JAN "1'96 15:34 NO -005 P .05 <br /> DRAFT <br /> of a site. relna dfaticm perfornied by WI-Ir, cDnsultanis. The cxeatvatod hydrocarhtan- <br /> affex;tecl acdls reaultcd from leaky underground storage tanks at the North Union Street <br /> -tile. Appniximately 7,400 cuhfc yaardx of thaw sail are surcicpiled atthe Vilest Wel3er <br /> Street site; the dimensions tat the sto*p1lo are approximately 125 x 260 feci and the <br /> depth ranges frwn I to 3 feet. <br /> Twenty sail starnplos were entleeted in 40-fcaot intervals fmm a grid AxmstnWted 011 <br /> the soil st(wkpile in August, ]SPA. I he sell samples were anal)rted for benzene, toiucnc, <br /> ethylbenzenc, and xylem (BTEX) and TPP in the gmulline range MH-g), kerDsene <br /> range MII-k� diesel range (TPI-1-d), and ofl range CFPH-o) by Amixican <br /> Environmental Network (A7 N) Labormory, a State-ccrlirwd onvimninvaital laboratory. <br /> The results of IIIIs sainplMij ofl'ori were presonied with the third yuxrwr groundwater <br /> saampAng results frum the North Union Street sire (ICI Ktaiser. 1995). <br /> Twu of the 20 soil samples extllu:tvd had TPH cumcantrrations imuecding tbv <br /> proptasctl sail cic4tnup luvoh;of lilt?zn&4g4 canal 1,O00 r gftg fern TPH-d ustd TPH-% <br /> respectively. Soil sample CS-13 had 5,500 ing/kg asf TPN-d land I1,00D mgAg of TFII-o; <br /> sample CS-2 had 180 tng ft Wird. Based on lite grid spacing, the arnount of acnes <br /> represented by these samples is estimated to tee approadinately 300 euble yards, assuming <br /> a 1596 volume expansion rammpanying mcavcmmt of the soil. <br /> 'Me fallowing=tion trremns it plan for remodiation, of the 300 cultic yards oaf <br /> Clam II wasto with TPH cc nccntratiOnS axcwding the: proposed rail drtanup lovels. <br /> 3.0 OF-SITIEf DISPOSAL PLAN <br /> Off-aitc elfapw aI of tiro Wroleum affoc td soil in a Class 11 landfill could be <br /> mnplcted in tapprwriax ale3y four it) six weeks, I'lie forward Ltandtill in southern <br /> Stockton has lower diclxaxaal costa than the next nearest disposal facility, the ISM landfill <br /> in Iavermore. The Forward dIsIx al facility, being closer to the site has the added <br /> It{a sxor►.oivtnGoz <br /> ��Frcm2.ttln 2 <br />