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f <br /> EPO RT ` <br /> ' f :QUARTERLY GROUND «'ATER T%IONITORING R <br /> `NIARCH:1995 <br /> t' r Hess-Du6ois':Cleaners <br /> 348,tii'est Iiartl'ing �'4'ay: l•�! L� <br /> SEockfon, California: ; <br /> MAY. 311995 <br /> f 19 May 1995. '2 <br /> 1rNVIRONMEMAL HEAM s <br /> PERMIT/SERVICES <br /> 1:0: INTRODUCTION AND SCOPE OF.WORh <br /> At-the' reduesf of .Mr Peter Wallace. property' owner; Geological Audit Services, Inc <br /> {GeoAudit) conducted ji-ound:water Ilion'toi-ilig field_ activities=at°3,48 West Hard ina'1Vay <br /> J `.• .� S <br /> t in:Stockton, 'Califori]Ia,.(Figure, 1:- Location Map) ',Ad v' ced_GeciEnvlror]nlental, 'Iiic:`. <br /> AGE `was subse uentl retained to'piepareahe Quarterly Repo rt'on,field.clata collected <br /> { ) q ,. y <br /> by GeoAudit. A`plan of the site is depicted on Figure <br /> 2.0: . -BACKGROUND <br /> .2.1. SITE LOCATION <br /> The-site-is located in a topoaral3hic4llh!.flat:busineSslresidential area.of Stockton; C�1lifor��ia ' <br /> (Figure 1). The site is located''on:Hardinff 1Vay; jppro inlately,one-quarter mile.��eSt of the <br /> intei•sectioi]`of Pacific Avenue. The site is.cur reiltli' occupied-by,a drY cleaning bUSineSS:, , <br /> . 2 • UST,REMOVAL •_' � ` ' � • . , 1' ' ' - " ' ' <br /> Eight u]]der rotai]d stori ge d iks .'(UST's) were removed ffom't11e.• site by -Falcon] Energy <br /> Associate`s.(FEA) in Jamia]y 1991. It is our i ndersta' ndin&tl'at-:tlie tanks contained stoddard,- ; <br /> ' 'solvents 'used'in c1q._cleaning p'Iocesses. . J. <br /> t, Tanl.s,l#1 through #7 2. <br /> were reniov fi:on] a common excavation along the souther n 00, 1101 <br /> of tllej)ro 14 Y., tank pit.#1 Tank #.8`\vas removed fron]'belieath the,side\valk along Van' <br /> h' Bureil'.Stke"et. (tank -,pita #2):, Soil .samples collected`;froni'tank''pit- #1 'indicated ' hat all , <br /> unairthorized r=elease o€1lydrocarbons Lias occurred:No•total petroleuin,hydrocarboi]s (TPH <br /> as stoddafdsolvent).or volatile aromatics (benzene,,tgluene,'etl]ylbenzene and total ayle]tes-' <br /> wer=e detected in_tahk pit #2. ; <br /> 2:3. .MONITORI1�TCr 'WELL INSTALLATION AND SAMPLING <br /> Threegroii��chvater.mou�torin,g'wellsN�'eieiiistalled•atthe.site.on26October•1993..The' wells <br />