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Case Closure Summary Page 2i N <br /> eaking [Underground Fuel Storage Tank Bram <br /> Ill Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Cori.centrations --Before and After Cleanup <br /> Y l <br /> Contaminant Soil (ppm) Water" (ppm: Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH (Gas) 240 35 22 ND Xylene 6.8 1.2 .328 ND <br /> TPH(Diesel) 1400 590 280 NO Ethylbenzene 36 1.2 1.3 ND <br /> Benzene 1.6 <.05 1.9 NO Oil &Grease <br /> Toluene .630 .29 .052 ND Heavy Metals <br /> Mineral Sprits NS NS MTBE <br /> MTBE NS .00028 NS NO <br /> 7 <br /> Comments: SOIL BEFORE FOR TPH DIESEL FROM B3 (12.5'), TPH GAS AND BTEX FROM BI (12.5'). SOIL AFTER <br /> FOR TPH DIESEL FROM B12 (17.5'),TPH GAS, BENZENE, TOLUENE, ETHYL BENZENE FROM B11 (12.5'),XYLENE <br /> FROM B12 (10'). GROUNDWATER BEFORE FOR TPH DIESEL FROM B1,TPH GAS FROM MW1 (01123195), BETEX <br /> FROM MW3 (01123195). GROUNDWATER,AFTER FROM MW3 (04108198) <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board Basin Plan? YES <br /> p p 9 , <br /> ;j <br /> Does completed corrective action:protect potential beneficial uses per the Regional Board Basin Plan? YES <br /> Does corrective action protect public health'i;for current land use? YES <br /> 40 <br /> Site management requirements: NONE <br /> Should corrective action be reviewed if land use changes? YES <br /> MonitoringNapor wells decommissioned: NO it Number Decommissioned: 0 Number retained: 7 <br /> A. <br /> List enforcement actions taken: NOR SENT j <br /> j6E+f <br /> List enforcement actions rescinded: NONE IL- <br /> !¢ 1 <br /> it <br /> V. Local Agency Representative Data <br /> Name: MARGARET LAGORIO Title: SUPERVISING RENS <br /> E SITE MITIGATION/LOP UNIT <br /> Signature: -, Date: <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: ,i Response Date: <br /> 4 <br /> RB Staff: MARK LIST ; Response: <br /> Title: ENGINEERING GEOLOGIST <br /> i <br /> VII. Additional Comments, Data, etc. <br /> This document and the related CASE CLOSURE LETTER, Shall be retained by the lead agency as part of the official <br /> site file. a <br /> �i <br /> is <br /> i <br />