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Case Closure Summary Page 2 <br /> Leaking Undefground Fuel Storage Tank Program <br /> Ill Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations - - Before and After Cleanup <br /> Contaminant Soil (ppm) Water (ppm) Contaminant ii Soil (ppm) Water (ppm) <br /> I Before After Before After Before After Before After <br /> TPH (Gas) 3,400' <1.02 Ethylbenzene1l x39.0' <.0052 <br /> TPH (Diesel) <1.0' <.1.02 Xylene r 163.0' <.0052 <br /> Benzene 3.7' <,0052 MTBE !j .I 4.9' <.0052 <br /> Toluene 59.0' <.0052 Heavy Metals; <br /> Lead-organic <br /> Comments:. Groundwater contamination was not investigated nor encountered at the time of tank removal and <br /> overexcavation. Soil sample notations made for identification: 1. SSA-EMR=001 @15' on 05/02/96 at the time of tank <br /> removal. 2. SSA-EMR-006@20' on 05/03/96 following the over-excavation'! <br /> The soil after results indicate that there was no residual soil contamination following the excavation attempt. <br /> IV. Closure h' <br /> Does completed corrective action protect existing beneficial uses per the Regional Board Basin Plan? (Yes) <br /> Does completed corrective action protect potential beneficial uses per the Regional Board Basin Plan? (Yes) <br /> Does corrective action protect public health for current land use? (Yes) <br /> Site management requirements: None. <br /> Should corrective action be reviewed if land use changes?(No) <br /> it <br /> wells decommissioned: NA Number Decommissioned: 0 Number retained: (0) <br /> Monitoring ( ) <br /> , <br /> List enforcement actions taken: NOR sent 06/06196. <br /> List enforcement actions rescinded: None <br /> V. Local Agency Representative Data ' <br /> Name: Do a Heran Title: Director of Environmental Health �. <br /> 44 <br /> Signature: 3,,� Date: <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification 11 I <br /> Date Submitted to RB: Response Date: None necessary - Soils only site <br /> RB Staff. J. Brathovde Response: !'I <br /> Title: Assoc Eng Geologist ;{ <br /> { <br /> VII. Additional Comments, Data, etc. <br /> 3 <br /> t <br /> I <br /> is document and the related a e retained y.;t a lead agency as part of the official <br /> site file. (08124193) Exhibit N Page 2 of 2 <br /> MM/CLOSURE/2300.SWB <br />