SITE INFORMATION AND CORRESPONDENCE

Home Browse Search

Case Closure Summary Page making Underground Fuel Storage Tank Pr..,am I 111 Release and Site Characterization Information (continued) LW, um Documented Contaminant Concentrations --Before and After Cleanup inant Soil (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) Before After Before After Before After Before After s) 1,600 400 36 0.112 Ethylbenene 26 11 1.4 0.0016 iesel) NA NA NA NA Xylene 140 43 5.9 0.0089 e 0.8 0.3 1.7 0.0079 MTBE 0.2 0.065 0.025 0.0008 42 5.9 4.6 X0.0005 nts: Soil Before TPH-gasoline and MTBE results are from P1 @4.5; benzene results are from TK1-N@13; and ,ethyl benzene, and total xylene results are from TK1-S@15, all collected on 09104196. Soil After results are from ollected on 02103101. Water Before results are from B-2 collected on 02103101. Water After results are from MW-1d on 12111107. IV. Closure Does completed corrective action protect existing beneficial uses per.the Regional Board Basin Plan? Yes Does completed corrective action protect potential beneficial uses per the Regional Board Basin Plan? Yes Does corrective action protect public health for current land use? Yes Site management requirements: None Should corrective action be reviewed if land use changes?Yes Monitoring/Vapor wells decommissioned: No Number Decommissioned: 0 Number retained: 3 monitoring wells List enforcement actions taken: NOR 04/10/97 List enforcement actions rescinded: None V. Local Agency Representative Data Name: Margaret Lagorio, REHS Title: Program Coordinator Signature: Date: $ $ b VI. Central Valley Regional Water Quality Control Board (RB) Notification Date Submitted to RB: Response Date: RB Staff: James L.L. Barton Response. Title: Associate Engineering Geologist VI1. Additional Comments, Data, etc. This document and the related CASE CLOSURE LETTER, Shall be retained by the lead agency as part of the official site file.