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X,"N <br /> tif 3 1 C ff r 7};H .4. S^%LG•�t .may,a y f„ v <br />�1a'l�tY 1y�' g, u�M <br /> V �- <br /> 4'e , <br /> 4 <br /> (�r+crrm,rnto_1:f1 g`;li70 � <br /> iFlti , <br /> �rvironn.ontat { f <br /> Cp�dutlAnts,tnc. <br /> l,1oVC[Tlbf:r 7, 1991 <br /> M[. Kenneth Farnest r <br /> 13ltraknar Inc. <br /> 525 VV"t'Lhird Street <br /> Hanford,California 93230 <br /> unitoring 1-t%tter lic�[rt,'Third Quarter 1991 <br /> Sul�jc.(. Qukrterly M 7 <br /> lk;acon Station No.6% I�cx1t California <br /> 2448 West Kettielnan Lancs, <br /> l3elta 1'suycct No. 40-9f)-839 <br /> l near Mr. Earnest: Ultramar Ikse. (Ultramar),to <br /> pelta), has been autlsoriz�d by <br /> round water betreath P,�'ss Dn Ss itiono. fi4�' I.M`letter <br /> lcelt<t roan invc gation Df dieysoilcan g rfotmed at the site- <br /> coaduc- 1_oe1i,CalifDrnia. The location of the site is shown in Figure 1. <br /> uasterl round water <br /> mw�llorCollected for analysis on <br /> 2AA8 West Iiettlentan 1 ine, ground work r k', Wltll the field <br /> report Wntains results of d1e n1Ost rent Q Y S rformed in accusdance <br /> Ground water levels were measured aad E <br /> 5eptemt+k=r 20, 1991• Work conducted at the site by lleita was <br /> Is and roc I res described in L nclosure A. t}ke site as shown ill Figure 2. <br /> metlto< P nt to <br /> INCUS are Present at and adjace wells contain measurable,ground <br /> of 32 monitoring acrd fDtar 34 MW-35, an[l <br /> A rota wells MW 20> MW-14, <br /> of these monitoring wells are currently ells water level data cgllected sinx <br /> water. Ground water level data co1l5U�rtted in Table from tlrWith€ foxintately 53 and 54 feet bCluw the <br /> Mytir_36,on September 2f), 1991,are p ' srui from t}keu ground wat<r <br /> rehruary 1991. (,round water was Present at the site <br /> be(ween e[t aFP <br /> lsjgl towtrd the southeast as shown <br /> Ground water elevation contours Prc'P titan at the site. <br /> surface Drr SePtentlx r 2�nferred ground water flow directs Ss)il vapur recovery S-y, wells <br /> level clank indicate tl+� 1991 an operating• 7 and MW 1p and n►onitoring <br /> On August_3, Ultramar g. 'AW-5 hfW- A and mW-35 on <br /> 1'i*ure 3. wells MW-2• <br /> SyStent applies vacvuttl to vada e um in theseevens. Previous Ground water level <br /> _ 4 and MW-35. She gft�und waver surface measured in ntanitorins wells "'sW <br /> t IW 3 ` *rouncE water tlow direction at the site <br /> tunbc:r 2a, 1991, may be elevated due to ds indicated d L <br /> Sep ' April,and Iunc 199 wa�cr Clow direction from tike south lei tlse <br /> r <br /> datacollected iu Tebruary, k . oun:!Vapor recovery system. "[Herefore,the actual <br /> was loward the south. 'Ute alTparent shift of the br <br /> Y y r alion of the soil e <br /> reviousl c.sG+bliMlied tisxttherly trckxl. <br /> s<xkdNast ma have been caved b ole ` Y <br /> ground water t4aw direction may reunlble tits P -)0, <br /> 1991, wLrU submitted to a California ccrtitied <br /> ' nzene,toluene,ethylbenzene,and yyleues <br /> BTUX)and <br /> Ground water s:tmPlcti collected on Scpteut�-r (}, <br /> a5 dyDlkne. A ya,rnmary of these analytical results, and the <br /> laboratory to determine the concentration of to•l able 2. Cuplt�ti of ttie field sampling <br /> tut+l l�troleuni hydrocarboIAS (LPId) ' fi B.L concentration mals hasul nn die <br /> reviotss sampling eve1113,t A di }ved t>e <br /> an;tlypcal result~Scam preunted in Enclosure <br /> information sheets are P <br /> DOVI Delivk'r Sotutior�` <br />