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SITE 1 ST[)RY FA S CAR W ASH CAUEr 6230 Pacific Ave. Stocktcm,CA store-ation and a convenience washing facility, a eek wash and fuel station has been automated car California. Th Car Wash consists of an . Stockton, d dispensers Canepa's at 6230 Pacific Avenue' fuel l'uxeS an The USTs The site is located decades. tanks(USTs), stem- ration for over twoound storagea doubled walled system- A by ' in oPe 3 1993,tW,ee undergr laced with As e jjSTshad 25 and March s �� and P anon diesel UST. and that th Between FebrilarY Environmental ( and ane 5,000-8 d leaked excavation area. The oved by saline USTs ed that the fuel fines ha the UST California. were rem o 12,000'gallon it was discover moved from dfill in Manteca, consisted of �`' d piping, ands of soil were re The laboratory e tanks an p 600 cubic �' a'ed of at Farw d ' analyses. upon removal of th and disp for laboratory et}ons• One overfilled. Approximately cterized lam B c]ora excavation T$ xx ccm73 mg�g Tpa-6 been a subsequently the tank X15 mgfkg) and d soil was were collected kgaso"lle at excavation contained twas detected in one $ail excavate e nkTPH D (diese) former fuel dispenser At least 16 soil samplescantly sidewall°f fr' red In the northeastern x leases) irxdicated' total y be the kg? and BTE results le collected from 1`0,44(} moc-g ( collected from to 3,$04 Ing/kg) samples {1)soil same rani up to les were af -f,PH-G (up el dispenser sail and BTEX con! At soil same a soil samples At least seven concentrations limit rn th niple at 32 rn�g- analyses. 000 mg/kg were detected e tion s laboratory k to 560, reported is for from 26 mgt g above the laboratory tions ranging detected at ar enser islands. e former£uel d35penser Concentra v,as not dei er fuel disp Moderate ,lpyl_Iy {diesel) rsnmediately east of tlti ben' the instalwd by ground surface (bgs) collected from feet below the Elevated l l'H-G and ren {B-1)`� ately 56 feet g 1993,soil ho g roxim s to 5b•5 feetbgs Canarcl� 12 was encountered at app 15 feet bg 56.5 Groundwater 35 feetbgs� the area of islands. odors were detected l rs collected from d installee 5VE wells to strong petroleusrr detected in soil saxr►p wells were drilled an W pox of les as agreed concentrations were Bete a network of nine 5 Gilliam all of installation, er consultant, of laboratory same ations, to the farm e collection field obsery Mian unit Following the sail boxing According /cal logs and without d' that based °" interna comb enseT islands• ilir�g ge°log pox indicated ct issued by the fuel disp ,vithout camp constraints Mr' during installation. thority to Cons tru ICU were installed due to time contamination east under the Au ryctabeT , 1993. The notes Upon by the PHS�1l D sigrrs of gasoline d tream' CD), dated onitoring the SVE wells draw va r extraction an District (I Based on field rn tion e site for po Central p�str 1995. ,� a r'10ty LOLL►�a installed at' it pollution e 10, tired with, the Su" I -� L«zas (ICU)was 'Valley Unified A through aren�ent collected ° oaquin and operated �entxaLijLis, q, 4a--Or con" influent meas e started on March i 1, 199n"uent Organic k' The last was NYS �weragG s Ver million(Pf'm)' h MW-4) at pro-v i&" h Y ' 'x.,200 W-1 throug PID),exc� (may 15, 1995)• wells les collected fi°m detector { ld5 Pp four {4)monitorin oundwater same N7-1 system was�, Inst odors in the sail m MW-1 > 1993' asoline were detected i" asoline from September.2� and 30 trong g les collected MW-3 Between ted concentrations of g m©derate to s Soil same les collected from to eleva abser�ations indicatedeet to 61 feet bgs of s nrp parted detection the site. La r MV_d, Field d at MW-2 from �0 f soil ai-MVS the laboratory re W�1 thrc�ugl feet bgs an Analytes o abo 70 feet to 55 d in the labc9at�' detected at ar ve from' - 2 were not anaky or 13TE-X were not and3- and MW`4 indicated that TpH-G