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Oct 2913 03:05p Arbabian Family, I ' .0 2- 472-9584 p.4 <br /> Y <br /> is <br /> II <br /> ii <br /> l <br /> ;i <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 Before (ppm) Water (ppm) Contaminant Soil Before (ppm) Water (ppm) <br /> } After Before After After Before After <br /> TPH(Gas) 15W NA 130.0 <0.05 Xylene 85 NA 3.3 <0.001 <br /> { TPH(Diesel) 5.6 NA NA NA Ethylbenzene 17 NA 1.70 <0.001 <br /> Benzene 0.27 NA 0.77 <0.001 Oil&Grease <50 NA NA NA <br /> Toluene 20 NA 0.034 <0.001 Heavy Metals Pb<9.5 NA NA NA <br /> MTBE 50 NA 16D 0.011 <br /> Comments: The Soil Before Concentrations:TPH-g, E. and T are from sample N-1 at 16 feet collected on 12130119,38; B is <br /> t from ST-20 collected 01/1511999;X from TLA at 10.5 feet collected 12131/1998; TOG from FL-2-3 at 3 feet collected <br /> 05/141997; Pb from ST-16 (stockpile)collected 01/1511999;and MTBE is from TX-5 at 11.5 feet collected 1213111998. No <br /> Soil After Concentrations are available.The Ground Water Before Concentrations. TPH-g and MTBE are from MW-5 <br /> collected on 12123/1998; BTEX are from MW-3 collected on 09/1511993.The Ground Water After Concentrations:TPH-g, <br /> a <br /> BTEX and MTBE are from MW-10 collected on 04/1212011. <br /> i <br /> ' IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board Basin Plan?Yes <br /> 1 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 /> MonitoringlRemediation Wells Decommissioned?No Number Decommissioned: 1 Number retained: 53 <br /> List enforcement actions taken: NOR sent to RPs <br /> List enforcement actions rescinded: None <br /> V. Local Aciency Representative Data <br /> Name:Adrienne Ellsaesser, REHS Title:Action Program Coordinator <br /> Signature: Date: / !7`� <br /> Vl. Central Valley Regional Water Qualily Control Board RB Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: I Barton Response: <br /> Title: Eng. Geologist <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 site file. <br /> i <br /> i <br /> Received Time Oct- 29. 2013 3: 11PM No. 3541 <br />