Laserfiche WebLink
N"..r <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) NA NA NA <0.05 Xylenes <br /> <0.005 NA <0.0006 <0.0005 <br /> TPH (Diesel) 11 <1.0 0.58 <0.05 Ethylbenzene <0.005 NA <0.0003 <0.0005 <br /> NA NA <br /> <0.005 NA <0.0003 <0.0005 Oil&Grease NA NA <br /> Benzene <br /> Toluene <0.005 NA <0.0003 <0.0005 Heavy Metals NA NA NA NA <br /> MTBE NA NA <0.0005 NA <br /> Comments: SOIL 'BEFORE' DATA FROM TANK PULL SAMPLES; SOIL 'AFTER' DATA FROM SOIL BORING B-5. <br /> WATER'BEFORE' DATA FROM GRAB SAMPLE COLLECTED FROM THE TANK PIT DURING TANK REMOVAL, <br /> EXCEPT MTBE RESULT FROM SOIL BORING B-1; WATER'AFTER' DATA FROM MW-1. <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: 1 <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: DONNA RERAN, REHS Title: DIRECTOR, ENVIRONMENTAL HEALTH DEPT. <br /> Signature: Date: r p j r <br /> 1 ll <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 12/22/10 Response Date: 01/14/11 <br /> RB Staff: JAMES L.L. BARTON, PG Response: CONCURRANCE <br /> Title: ENGINEERING GEOLOGIST <br /> VII. Additional Comments, Data, etc. <br /> MONITORING WELL MW-WES1 IS BEING RETAINED BY THE CITY OF TRACY FOR USE WITH THE WASTEWATER <br /> TREATMENT PLANT POND MONITORING PROGRAM AND WILL BE PROPERLY DESTROYED WHEN IT NO <br /> LONGER HAS A BENEFICIAL USE FOR THE CITY. <br /> This document and the related CASE CLOSURE LETTER shall be retained by the lead agency as part of the official site file. <br />