Laserfiche WebLink
Case Closure Summary <br /> Leaking Underground Fuel Storage Tank Program Page 2 <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 <br /> Before After Before After (Ppm) Water (ppm) <br /> TPFf(Gas) 11,000 NA Before After Before After <br /> 250 5.2 Xylene 970 NA 20 0.46 <br /> TPH(Diesel) 2,400 NA <500 <1.0 Ethylbenzene 190 NA <br /> Benzene 39 NA 22 0.012 Oil &Grease NA 4.0 0.28 <br /> Toluene 470 NA 50 NA NA NA <br /> 0.10 Lead(Pb) 9.67 NA NA NA <br /> MTBE <1.0 NA 0.10 <0.05 <br /> 1,2 DCA 0.36 NA 1.5 0.11 <br /> Comments: SOIL BEFORE CONCENTRATIONS: TPN-g toluene (T), xylene(X), , and MTBE are from MW-1 at 35'on <br /> 7122/2003; TPH--d is from VW-1 on 8126/2008; benzene (B) is from P7 at 45' on 5/23/2002; ethylbenzene (E) is fromVW-1 <br /> on 3/16/2005; and 1,2 DCA is from SB-1 at 55' on 3/10/2005. SOIL AFTER CONCENTRATIONS: no results are available. <br /> WATER BEFORE CONCENTRATIONS: TPH-g and T are from VW-1 on 8/2612008; TPH-d is from MW-1 on 6/22/2006; B, <br /> MTBE, and 1,2 DCA is from MW-1 on 7/31/2003, E is from MW-1 on 5125/2005; and X is from MW-1 on 8/30/2006. <br /> WATER AFTER CONCENTATIONS: TPH-g, TPH-d, T, X, E, are from MW-13 on 12/2812012-1 B is from.MW-6 on <br /> 12/28/2012; MTBE is from MW-1 on 6/1/2007; and 1,2 DCA is from MW-1 on 5/2112012. <br /> NA=Not Anal zed <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 <br /> Number Decommissioned:20 Number retained: D <br /> List enforcement actions taken: NORs sent to 2 RPs July 24, 2002 <br /> List enforcement actions rescinded: NA <br /> V. Local A ency Representative Data <br /> Name: Donna Heran, REHS <br /> Title: Director <br /> Signature:. <br /> v �� ---- Date: 02/15/2014 <br /> Vl. Central Valley Regional Water Quail'ty Control Board RB) Notification <br /> DaEEngimneering. <br /> to RB: 05/23/2013 <br /> Response Date: 06/24/2013 <br /> RBs L.L. Barton <br /> TitlGeolo ist Response: concurrence <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. <br />