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SITE HISTORY CATNEP 623Q pactfA A eAStj CanePa's Car w Stockton,C,q The Site Is Joe `�� CanS]StS of In ed at 623, automated c ar m operation for over tyro der c1 1c Avenue, In S ocwa ming facility, a f een Feb Callforrlr eel station dispenser ruar%/ a The Ca and a cony by he Usrs were b3, �1.and aHF reh 3, 1993, thnm ree wash and&e1 stat fln e stor, has be of two EIIirroen urrderiuj been the SSTs upon reirir�val of l2'()1)0-gallon tar ( IF d storage t ,the had be the tanks and gasoline US and replace mks (Us �, a}atjon area 7 n overflled f'IPrn d w'Ith fes! lines and in f anter be excaalatec �PAMAIMat 9 jt vas d sand ane S,�a�_gall a double wall anal a' Cai�fornja At .Y` 6cub covered thatn diesel �}� system The lab At least I6I$011 amp, ue ie 3 the of ail a fuel lines had le As r Pclrtecl aTF concentratio r' results 'ndic sanlAles were col and yvore xeriaoaed wed and that ritalned 773 mtr ns one(1 aced Predo cane d disposed from the soilrte from the tan . of at Fo (diesel) was detectedgI PR-G sample Coll m�narjtly love and La QST beneath the form ones and BTFx Con ted from the eentratnorth (gasoline acavarloIl far laboratory fuel'to 3800 In g er fuel disFei sejr Ple at 32 1orng/kns UP to e stern sidewall oft 5 mg kg) ancial©w lir alispenser soil B E cOncentra Islands far labora g At lett $even mfg (totalhx tank excavatlr�n mat in the sora s espies Tp _D ns rang, froom analyses _6 oil' samples Were vlenes) TPS-D Ales collected (diesel) was not m 26 m ated cocollected from Can March I2 m beneath the detected at g to 5601000 ncentratlons of Tp ills ' l993, soilboringf°mer f above the l mgl`g were detect -G (UP laenseriox Moderate tar ren G"Indwt (Bcaj � Ins d b nel dispenser Islands tory reported det ctfth one BTEC coneentr g petroleum i? a entered Installed y WIIF alio dors yyrero del at approxi Immediate) Followin ns Were detected In soil samples frorxi ix matelY 56 Q the feet below thest of the fo and installed sort boring Ples collected frpmg to��5 feet ba e gr°end s�rrfacne(bfsei Of SWI-IF, the S V e area of thetf el Ion' ark of $feet bgs toy 5 IPvated TPS-G g ) a network laborato wells were dispenser island nine soil 'Vapor feet bus and an field obs a a1s Acc Por extractio absen,atio greed uPon talled without co ording to n (SV Internal ns,all of by rhe p mpjiIn die former E) wells AuthojxtY to bjistron (ICS SV Wells show SID, due a��°�°giro! logs an�onsuitailt, bVill�ere drilled unit dared October °nstruct issued b was installed aid signs ofgasalinenstraints Mrrhout the collect pax Bas 7, 1993 The y the San Joaquin €Yoe site for C°ntamination dv II�dlcated that a of Measured n f�eid r0Onitori a }� has started Valley alcor hrracrlo uri tallatip Se ijx d with a na nates ed on nified Air, n and ng Ins � Influent measure Photo '5nolprovided hY arch I Is 199 Pollution Cant treatment ender n. An Ment collected fir Ionization `detecto (PID) = average j' and °prate ral District (APCD Behlr °IrI the s , exceeded 2 2nfTijant organ�cthraugh -tune 10 CD}, the site Low teinber 28 and 30, system as 2,14 S PPM , par is per vaPor conce 1995 w-I throe to elevated concnt X43, LVHF Installe P (May IS, 1995 million fPtam ntrations, I from gh A4W-4 F rations of d four ) The last anis M 0 feet to 55 Meet Ield observations gasoline were dot)monitoxing yyell bgs and Indicated erred rn s (MW-1 ilii 3 and ��2 were not analyzed at 1L1W--2 fir moderate to str graurrd�b Nf -4 Indic In the labor Ater s through detection 11ated that T1' ato om 4i feet to 67 feet ong gasoli amPles Calle ed at data Is co Illjts frog )o feet b -G t' Analyses bgs Soils gasoline odors Of soil to the soil at AdW jztained jn jnrer,jm Srat�thevalJi11B Fere not detected Of 1 Coll fro R� a13'fringe A su d at ora pies Collected - nz M�'-1 'base nvcsta mmarl'of the ratoboar from Af W gcrtiorr, by W#�po$ ndtgroundwate� reported �on the initial data,kcal