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SITE HYSTORy AA Cso� S cpawxS-a 6230 pacific Ave Stockton CA tare and a e°I'vei�i rLcen has been facility, a fuel station nd fuel statin toWashliagckton,California The car Wash a consists of an automated car arlss mash 6230 pacific Avenue in S fuel lines and C e tanks {LISTS)' walled system The site is located at o decades dexound stc�rag with a doubled As reported In operation for aver two tree laced diesel UST that and March 3, 1g03' ental ( F) and replaced 000-gallon had leaked and V'HF Erivironrn rJ5 fs and ane fuel lines from the 3j ST Februari` laved by anon gasoline that the removed and Landfill Between 000_g it was discovered of sail were dispensers were rem a 12, and P,IPIng, ards used of at Fa+"v consisted Of of the tanks ately 61111 cubic y and disp Mg/kg)ani low The SSTs tory c oval r°xim clnaractenj ro excavation u oi'r bsec]uently from the tank tank by 'VHF, p overfilled APP G (gasoline at <15 of the UST. bad been soil was su les were collected PH sidewall the }he excavated sail same Inaptly law T n°rtheastern total xylenes) excavation area t least 16 6dicated predom from the to 111,01111 mfg 1lected In Manteca, California A le collected les were ca Th. laboratory res�It i� soil same sail same ofTPH-G Tn 1 Poll and BTEX concentrations up seven trahons analyses T g pit least Conten Were detected in conceInatians le at 32 mg" analyses Elevated 'DT"ed BTEX contained 113 mgoxie soil same to 560,000 mgg �Wcted In °� ng from 26 Mg(kg above the laborataty tep excavatran dispenser is at °r TPLd-D (diesel) former fuel disp ations not detected user Islands and BTEC cancent� diesel) was former fuel dispe er fuel frorn beneath the TPH- ta 3,800 m g) les Bath the farm east of the form ben (up el dispenser sail same pies collected from F Imre aund surface (bgs ediately the gr G and tine fu 56 feet below ff"1'L- 11rnIt In the sails was Installed by s E}evated detection 1 raxlmately to 56 5 feet bg soil feetbgs35 feet fe to 56 5 feetbgs Match l2, 1993' boring was countered d to i s On M Grounclw e detected Frain from were drilled °dors-were les collected 5�E) wells � Fax dispenser Islands etrolen 0Il sarnp extraction ( t -NIlharn Moderate to strong p Were detected In $ soil vapor a network of nine to the former c011sultan ,the collection of BTE)(concen�atlons According +without based 19 0 ,cal logs and banng installation, user islands cling g Mr Fax Indicated that the soil the fuel dl5pe constraints Bunn'installation Following in the area of lied without c°mpdue to time inatton t under the and installed Frere costa PBSIEFaDs gasoline conta" and treatmen PCD), SHF, the SVE .tells upon by the ed signs of g extraction Istrlct of eed P SIE we showed for vapor Pollution C01MI),TJ fl 1995 samples as agz at the sste lune 1 laboratory atians,all of the S Installed alley�nlftesi AiIId Aerated' ouor conCentratlon5, obsery (ICU) was 1994 o vapor The last Or,field bastion unit (ed by the San to on March 11 organic Internal cam ct issu stares MrF average Influent g r million (Ppin) Authorit7` to Cons 3 The notes pwe's by exceeded 2,200 PSrts p rovlded ' D), m(May 1995) at dated.4ct°ber l45 pp an field monitoring tion detector was 2, l through ) Based With a photo Ioniza the systemwells EM - measured onitoring ter samples collected from ent measurement collected from installed four (`l)m akind�va the Sail at -- Inflii 1993, were detected In gT asoline agars in frai�iMl-1 line to Stroll?, les ca ted M - '0' Berate er 28 andlle� Between Septemb ted concentrations of gala mo feetbgSail sarnP les collected from olted indicated s p site Low to eleva Field observations qq feet to �'� 1 of camp laboratory re the }IIVINVA F d at -2 from of soil ana yses groundwater analytical _l throug Analyses or soave the to 55 feetbgs an ej porgy were not detected of the Soil and Braun I from 211 feet of aral)(Eed In th e A summary and�`2 were n ted that TP .,he capillary fring 3 �-4 >n orae feet bg5 t4 the and detection limits