Laserfiche WebLink
d. <br /> Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> IIf Release and Site Characterization Information (continued) I <br /> FEMam Documented Contaminant Concentrations--Before and After Cleanup <br /> ant Soil {ppm) <br /> Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> ( as} 13,000 4,300 400 .430 Ethylbenene 170 .78 2.3 .023 <br /> Xylene 1500 12 7 .0049 <br /> TPH(Diesel) <br /> Benzene 18 <.4 21 A0092 <br /> Toluene 270 <.4 17 <.0009 MTBE <.009 <br /> I. <br /> Comments: All levels in ppm. Soil Before BTX levels from soil below UST at time of removal, ES result from RW1 at 35' <br /> below grade, TPH-g level from P2 at 40' below grade. Soil After levels are from P5 at 40' below grade, at 55' below grade <br /> was ND. Groundwater Before is from MW1 on 1017193. Groundwater After is from MW4 on 10123197. <br /> i <br /> I <br /> IV. Closure <br /> i <br /> Does compldted 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: No Number Decommissioned: 0 -Number retained: 11 <br /> List enforcement actions taken'. NOR <br /> List enforcement actions rescinded: None <br /> V. Locai Agency Representative Data <br /> Name: Donna Heran Title: Director of Environmental Health . <br /> Signature: Date: �lc4 <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 1126/98 Response Date: 1125198 <br /> RB Staff: P.!Anderson Response: Concurrence <br /> Title: Hydrogeologist <br /> VII. Additional Comments, Data, etc. <br /> This document and the related CASE CLOSURI LETTER,Shall be retained by the lead agency as part of the official <br /> site file. <br />