Laserfiche WebLink
i r <br /> is <br /> Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> 111. Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations--Before and After Cleanup <br /> m Contaminant Soil Before (ppm) 9efore <br /> (ppm) <br /> Contaminant Soil Before (ppm) Water <br /> (ppm)) After After <br /> After Before After 0.0023TPH (Gas) 4,880 0.3 <.05 <.05. Xylenes 188 0.017;NA NA NA Ethylbenzene 33.9 0.047 <.0005 <br /> TPH (Diesel) NA <,0005 Oil&Grease NA NA NA <br /> Benzene 2.77 0.005 0.0006 NA <br /> Toluene 32.1 0.011 <.0005 <:0005 Heavy Metals 0.46 NA NA <br /> MTBE NA. <.5 NA 0.0023 <br /> N NOT PERFORMED AT THIS SITE. 'BEFORE' SOIL CONCENTRATIONS FROM <br /> Comments: ACTIVE REMEDIATIO <br /> ENTRATIONS FROM SOIL BORING SB-3, EXCEPT MTBE FROM 12197 <br /> TANK PULL RESULTS; 'AFTER' SOIL CONC <br /> AND 10102 SOIL BORINGS. WATER'BEFORE' CONCENTRATIONS FROM 08/15/89 QUARTERLY WELL SAMPLING; <br /> WATER 'AFTER' CONCENTRATIONS FROM 11126103•QUARTERLY WELL SAMPLING. <br /> IV. Closure <br /> F <br /> completed corrective action protect existing beneficial uses per the Regional Board Basin Plan? YES <br /> completed corrective action protect potential beneficial uses per the Regional Board Basin Plan? YEScorrective 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: 0 Number Decommissioned: 0 Number retained: 3 <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: MARGARET LAGORIO, REHS Title: SUPERVISOR, SITE MITIGATION UNIT <br /> Signature: -Date:. <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: . <br /> RB Staff: JAMES L.L. BARTON Response: <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 <br /> site file. <br />