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' % <br /> Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> Ill. Release and Site Characterization Information (continued) <br /> [Maximum Documented Contaminant Concentrations -- Before and After Cleanup <br /> Contaminant Soil Before (ppm) Water (ppm) Contaminant Soil Before (ppm) Water (ppm) <br /> After Before After After Before After <br /> TPH (Gas) 12,000 950 172 0.56 Xylenes 880 190 26 <0.0005 <br /> TPH(Diesel) NA 310 NA NA Ekhy[benzene 170 31 4.6 0.001NA NA <br /> Benzene 28 1 9.4 0.034 Oil&Grease NA NA <br /> Toluene 710 41 82.6 <0.0005 Heavy Metals NA NA <br /> NA NA <br /> MTBE NA <0.033 NA NA <br /> Comments: SOIL 'BEFORE' DATA FROM VW-2 @ 21'BSG (1992). SOIL'AFTER' DATA FROM SB-3 @ 20'BSG (2009). <br /> WATER 'BEFORE' DATA FROM MW-2 ON 10126188; WATER'AFTER' DATA FROM MW-2 ON 7119110. THE <br /> GROUNDWATER HAS BEEN ANALYZED FOR MTBE AND REPORTED NON-DETECT. <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: YES Number Decommissioned: 1 Number retained: 24 (+3 SETS <br /> OF VAPOR PROBES <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: ADRIENNE ELLSAESSER, REHS Title: ACTING PROGRAM COORDINATOR, UNIT IV <br /> Signature: Date: <br /> � :7-AU he> <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: JAMES L.L. BARTON, PG Response: <br /> Title: ENGINEERING GEOLOGIST <br /> VII. Additional Comments, Data, etc. <br /> COMPLIANCE WITH PUBLIC PARTICIPATION REQUIREMENTS IN SECTON 2728 OF THE CALIFORNIA CODE OF <br /> REGULATIONS HAS BEEN MET. <br /> This document and the related CASE CLOSURE LETTER shall be retained by the lead agency as part of the official site file. <br />