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� 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 Soil After Water Water Contaminant Soil Soil After Water Water <br /> Before (ppm) Before After Before (ppm) Before After <br /> (Ppm) (Ppm) (Ppm) (Ppm) (Ppm) (PPM) <br /> TPH-G <.05 ---- ---- ---- MTBE .0065 <.020 ---- <.005 <br /> TPH-D <1 ..-- ---- ---- PCB <0.3 ---- ---- ---- <br /> Benzene <0.5 ---- ---- ---- 1,2DCA <.005 <.020 ---- <.005 <br /> Toluene <0.5 ---- ---- ---- EDB <.005 <.020 ---- <.005 <br /> Ethylbenzene <0.5 ---- ---- ---- DIPE ---- <.020 ---- . <.005 <br /> Xylene <1 ---- ---- ---- ETBE ---- <,020 ---- <.005 <br /> ---- ---- ---- TAME ---- <.020 ---- <.005 <br /> TBA ---- <.200 ---- <.050 <br /> No cleanup was performed. Soil Before results are from soil beneath the UST at the time of removal. Soil and Water After <br /> are from geoprobe samples collected 1/28/00. MTBE was initial concern and was ND in additional investigation. <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? No <br /> Monitoring wells decommissioned: N/A Number Decommissioned: 0 Number retained: 0 <br /> List enforcement actions taken: NOR sent <br /> List enforcement actions rescinded: None <br /> V. Local Agency Representative Data <br /> Name: Donna Heran Title: Director of Environmental Health <br /> Signature: �G u� 1-a- --` Date: I_ 3 p <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> E <br /> Submitted to RB: August 21, 2000 Response Date: December 6, 2000 <br /> taff: Marty HartzellResponse: Concurrence for closure. No further action <br /> Assoc Eng Geologist required <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 <br /> official site file. (08/24/93) Exhibit N Page 2 of 2 <br />