Laserfiche WebLink
%%./ <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) 6,300 NA 4.7 0.099 Xylenes 1,600 NA 0.770 <0.0005 <br /> TPH (Diesel) 5.7 NA 3.5 4.4 Ethylbenzene 250 NA 0.270 <0.00052 2 4 7 <br /> Benzene <0.005 NA <0.0005 0.002 TPHmo <12 NA <br /> 208 NA <br /> <0.0005 Lead Pb NA NA <br /> Toluene 500 NA 0.24 <br /> 1,2 DCA 0.18 NA 0.970 0.230 MTBE 10 NA <0.001 <0.0005 <br /> Comments: `Soil Before' TPHg, Benzene, Toluene, Xylenes, Ethylbenzene from P3 @ 40' on 3/26/02. MTBE from P3 @ <br /> 15'on 3/26/02. TPHmo, TPHd from SB-2 @35' on 1/14/09. Lead not analyzed. `Soil After'. None. No active remediation <br /> completed. Lead not analyzed. `Water Before'TPHg, Benzene, Xylenes, Ethylbenzene from MW-1 on 9/12/08, TPHd from <br /> MWA on 12/5/08, Toluene, MTBE from MWA on 8/22/06, 1,2 DCA from MWA on 11/21/06,TPHmo from MWA on <br /> 12/1/10. Lead not analyzed. `Water After' TPHg, 1,2 DCA from MWA on 4/13/12,TPHd, Benzene, Toluene, Xylenes, <br /> Ethylbenzene, TPHmo and MTBE from MW-6D on 4/13/12. Lead not analyzed. NA= Not Analyzed <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: 7 Number retained: 0 <br /> List enforcement actions taken: Notice of Responsibility: 6/25/02, 2/28/07 <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: Donna Heran, REHS Title: Director <br /> Signature: Date: 06/24/2014 <br /> ­�e,Ij-A A-,,, <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 09/04/2012 Response Date: 09/20/2012 <br /> RB Staff: JAMES L.L. BARTON, PG Response: Concurrence <br /> Title: ENGINEERING 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 />