Laserfiche WebLink
I' king Underground Fuel Storage Tank Pro <br /> y III Release and Site Characterization information (continued) <br /> Maximum Documented Contaminant Concentrations --Before and After Cleanup <br /> (Ppm Contaminant Soil (ppm) Water (ppm) <br /> Contaminant Soil (ppm) Water Aft ) Before After Before After <br /> Before After Before After NA NA <br /> TPH(Gas) N40.01 <br /> A NA NA NA Xylene 0.005 <0.01 NA NA <br /> TPH(Diesel) 2400 41.0 NA NA Ethylbenzene 40.005 <br /> Benzene 40.005 40.005 NA NA Oil&Grease NA NA NA NA <br /> Toluene 0.005 40.005 NA NA Heavy Metals NA NA NA NA <br /> MTBE NA NA NA NA <br /> Comments: The Soil Before concentrations are from a piping trench sample (S4-trench 1) collected at approximately 4 feet <br /> bgs. The area of identified diesel contamination was over-excavated to approximately 14 feet bgs and resampled. The Soil <br /> After concentrations are from samples collected post over-excavation. The contaminated soil stockpile was then treated on- <br /> site (estimated TPH-d mass of 144 pounds) and soil confirmation samples were collected and analyzed. The confirmation <br /> sample results were below laboratory detection limits for TPH-d. The treated soil will remain on-site per RP . <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: NA <br /> Should corrective action be reviewed if land use changes? NA <br /> Monitoring/Vapor wells decommissioned:Q Number Decommissioned: 0 Number retained: 0 <br /> List enforcement actions taken: NOR sent to the RP <br /> List enforcement actions rescinded: NA <br /> V. Local Agency Representative Data <br /> Name: Adrienne Ellsaesser, REHS Title: Acting Program Coordinator <br /> Signature: � / � Date: L1121114) <br /> VI. Central Valle Regional Water QualityControl Board RB Notification 7 <br /> Date Submitted to RB: Response Date: <br /> RB Staff: J. 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 <br /> site file. <br />