Laserfiche WebLink
t <br /> � � u <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 (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH(Gas) 15,000 97 29 .570 Ethylbenene 330 .031 .910 >.0005 <br /> TPH (Diesel) Xylene 2,100 .24 3.9 .0015 <br /> Benzene 15 >.005 1.9 >.0005 TCE <br /> Toluene 220 .18 5 >.0005 PCE <br /> MTBE >10 >.05 NA >.001 <br /> Comments: SOIL BEFORE Results for TPH-g, MTBE, Xylene and EthylBenzene are from VW5 at 15 feet, Benzene and <br /> Toluene are from B1 at 30 feet. SOIL AFTER Results are from CB1 at 35 feet. WATER BEFORE Results are from MW2 <br /> on 3/16/95. WATER AFTER Results are from IAS2 on 4/27/01. Vapor extraction/air sparging was performed at the site <br /> from 9/2/99 until 1/23/01 and 133.5 gallons of gasoline were removed. <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: No Number Decommissioned: 0 Number retained: 14 <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> Name: Margaret Lagorio Title: Supervising REHS <br /> Signature: Date: —7 I S I b t <br /> VI. Central Valley Re ional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: Marty Hartzell Response: <br /> Title:Associate 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 <br /> site file. <br />