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r <br /> Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> III Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations-- Before and After Cleanup <br /> Contaminant Soil (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH (Gas) 1900 ND ND Ethylbenene 23 ND ND <br /> TPH (Diesel) ND Xylene 25 ND ND <br /> Benzene <2 ND ND <br /> Toluene 7.4 ND ND <br /> MTBE <br /> Comments: The soil before results are from a soil boring. It was determined that there was limited soil contamination and <br /> remediation was not required so there are no after results for the soil. There was no groundwater contamination detected in <br /> two sampling occurrences. <br /> IV. Closure <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? Yes <br /> Monitoring/Vapor wells decommissioned: 0 Number Decommissioned: 0 Number retained 3 <br /> List enforcement actions taken: NOR dated 5/24/94 <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> Name: Margaret Lagoho Title: Supervising REHS <br /> Signature: Date: fp l q L'� <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: J. Brathovde Response: <br /> Title: Assoc Eng Geologist <br /> VII. Additional Comments, Data, etc. <br /> SOIL ONLY <br /> This document and the related CASE CLOSURE LETTER, Shall be retained by the lead agency as part of the official <br /> site file. <br />