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,, -- <br /> Closure Summary Page L am <br /> Sto <br /> e Tank <br /> t <br /> Leakin' 'idergr uSnfouel ion r(continued) <br /> �2II. <br /> Release and Site Charade izat <br /> Maximum Documented Contaminant Concentrations--Before and After Cleanup <br /> m Contaminant Soil (ppm) fore t1�ar (ppm) <br /> fo . <br /> Contaminant. Soil (ppm) Water (Pp Before After Be +a After <br /> Before- After Before After <br /> .O$ Xylene 870 13. .030 .13017 <br /> TPH (Gas) 31.000 < 1..0 .91 .029 .OtS13. <br /> onzene <br /> TPH (Diesel) 2,#00 1.0 1.20 .071.017 Oil &h+Srease 7 20 uxsk I <br /> Benzene 390 6.5 .24: <.0005 Heavy, metals w <br /> Toluene .015 .044: <br /> other 1,2,DCA .086 .062 Other TCB i <br /> Comments (Depth of Remediation, etc.) : AND BENZENE FROM 46PPM <br /> VAPOR P;XTRACTION, 19.9 , R]bNG80 11.,000 PPM TPH-0 TO t ii0 PPM., <br /> �"TO 6 PpM TPH-G AT 5000P'PM <br /> AND. <br /> 6700PPM WITH B1CNYENE AT e_2PPM AND "1.3PPM IN: :TWO AREAS.:THE, <br /> C ROUNnWATNR: LEVELS A9 OF .JULY, 1996 SHOW TP I-G '0991'�H AT 260PPSi BEN�BNP) �0.5AT (MH' S .... <br /> OFFSITE,OUNWU'P LMI MN. .5 STILL RECORDS TPR-G/D AT 2g'OpgB/;62PPS. MTBE ON S'ITE.:AT 300PP$ �+i44-;1. <br /> AND AT 19.LYPPB 7N -5 AND AT 140PP.E ON UPGRADII3NT UGT SITE. ONSITE DCA.. .IN 3i7►T8R AT 62PPB _,�N. <br /> -1 AND TCE IN MW .1. IS y4:4PPB:. LOW99 LEVELS TRICHLC}ROETFi AND TCA ON AOP'FSITffi STILL. <br /> t IV« Closure <br /> �. <br /> Does completed corrective action protect existing beneficial ossa per the Regioaa). `Bard <br /> { <br /> Basin Plain:7 No. COMZCTIVE ACTION pLAN ;PROPOSED <br /> Does oomplet id correctivesaction protect potential beneficial ugog per the Regional Bgo;td <br /> Basin Plait? n/a <br /> Does corrective action protect public health for current land unot n/a <br /> site management requiremsntsl PETROI.ETJIE C0STITUENTS CONSIDERED TO BE NOT AS PROBLEMATIC <br /> AS EXISTING GROUNDWATER SOLVENT PROBLEM. SITS IN CVRWQCB SOLVENT PLUME STUDY,LODI ARRA <br /> ,t Should corrective action :be reviewed if land use changes? (Yes) <br /> Monitoring wells Decommisioned: (No) Number Decommis oned. Number Retained: <br /> List enforcement actions taken: NONE <br /> j <br /> 1. q <br /> List enforcement actions rescinded: n/a <br /> r <br /> s� <br /> V. Local Agency Representative Data <br /> Name: Title: <br /> Signature: It <br /> Date: <br /> VI. RWQCB ilotificattion <br /> Yate Submitted to RB: 20 SEPT 1996 RB Response <br /> iE <br /> RWQCB Staff Names J. BRATHOVDE Title: fl Date: <br /> VII. Additional Comments, Data, etc.. <br /> PREVIOUS ICED SUPERVISOR, DIANE HINSON, IN A MEMO JANU"Y 22, 1996 STATED NO GROUNDWATER <br /> REMEDIATION IS TO BE REQUIRED BY HHD DUE TO HIGHER RISK-jCONDITION$ OF SOLVENT'S IN THE <br /> 4. <br /> GROUNDWATER ALREADY. CONDITIONAL CLOSURE MAY BE ALLOWED IF NO OBJECTIONS BY LA'b'CDOWNER, <br /> D. STAUDENRAUS ARE VOICED. ATTORNEY FOR LANDOWNER DOES'[OBJECT BASED ON LACK OF INDEMNIFI- <br /> CATION. OWNER WAS APPRISED OF EXISTING CONTAMINATION AT,,TIME OF 1992 PURCHASE. VAPOR EXTRI <br /> ATION PROVED :SUCESSFUL. POSSIBLE UPGRADIENT OFF-SITE SOURCE STILL EXISTS. NEW RP, TEXACO, 1 <br /> RELUCTANT TO INTITIATE ANY REMEDIAL ACTIVITY AS: REQUIRED: BY EHD CASE MOR. <br /> This document -and the related CASE: CLOSURE LETTER, Shall beretained by .the :lead agency <br /> as part of the: official site file. <br /> Exhibit N Page 2 of 2 <br />