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Sto&fon SRev!t a StWIon <br /> Januaryti,I " <br /> SqW ment Company,Inc. <br /> P.Q.Box 500 <br /> Stodoon.CA 94201 <br /> Attn: Mr.IMM Rorer <br /> Am W Saw"BRneath Gasoline Storage Tank <br /> Ruiz Grocery Stora,Exceltech Project No.1619G <br /> Dear W.lis: <br /> At yaw tregtrM.ext MW'day,Decotrsbow 14.t 887,Exce±te6't sent a crew loft Ruls merry Store <br /> at A491 W09 Dwharrt Fenry Rid nm Trsrey,Ctdltorrft oto&M two enfty cry berkW and <br /> W609 sols SWW, s lrom beneath an Imploce zuftwface"*"Von"ta*. It vras necsetssry b <br /> drill tfte berlftgs W an an*due to obaMmodo s dlrrscet y oral the ftr k,Ttte work wars perfamed <br /> under Permit NO.07-4192 ist �ed by the Sari Joaquin Local Health District(S,1LHD}and foibwed <br /> Our t of November`IS,"987 and addendum of November 20.1987. A representative of <br /> SJUAD.Dan We.was Present at'8+ei rite and observed a portlen of tris work. <br /> One b*"was d'red under each end of the tank. The borings were Initiated W <br /> . r appr0 mately 10 <br /> set from Me cOMer of the .ani.tared drittod at a 4_"egree angle aro that the bottom of the bo" <br /> was dkoctly under the tank at 3ptaroxIM0101y.10 feet In depth. Samples were eoneeted M&foot <br />' Intervals along 411e3 bereho'e.-sing Sam-,J&e^ulWed with braes liners. One <br /> Ilner tram each vamp;ng interval was saved`or analysis. The ands of the firer were seated with <br /> foil and plastic caps,bq;ejd on a chain-of-cststody sheet,and placod in a chilled cooler for <br /> transport to a state-certired laboratory for anaiysis. .A boring!og was precaned`or each <br /> borehole. <br />�. Boring SB-1 was initiated at the end of the tank near the <br /> PUMP and boring 58-2 was Initiated at <br /> the OQpOStte end of the tank. The two lowertrtost samotes'from eCAC1 borehote were anafyxsd for <br /> total hydrocarbons as gasoline with a dl�tinct.lon o'the cc'pounds benzene,toutene,ethylbenzene, <br /> f <br /> and totalxylenes, These samp€es <br /> were cOrected from at>lsrnximatety 8 feet below the surface(the <br /> level of the tank,bottom)and from. 10 feet below the surface(directly below the tank). <br /> Analysis shows heat hydrocarbon contamination was detected In samples SS1-3,S82-2, and <br /> S82-3. fire reeutfs of the analyses ars attached as well as oopies of the boring logs,SJLHO <br /> permit,chasm-of-custody,and sits sketch showing the taring !ocat€ons. <br /> It you have any questions,please call. <br /> 4 Sincerely, <br />{ ECC' 'TF--CH.INC. <br />( Stephen Costello Christopher M.Palmer,C.E.G. 1262 <br /> Staff Geologist Manager, Geotechnical Services <br /> cc:Dan Moe(SfLHQ) <br /> 41674 CHR!STY STP.EET FREMONT, CA 945U <br /> PHONE(415)659.0404 CONTR. L!C, NO.484324 <br /> t <br /> i <br /> i <br /> i <br /> w <br />