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Case Closure Summary Page 2 _ <br /> eaking Underground Fuel Storage Tank f4ram <br /> I <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) NIA NIA NIA NIA Ethylbenzene <.005 <.005 NIA NIA <br /> TPH(Diesel) 35 35 NIA NIA Xylene .631 .531 NIA NIA <br /> Benzene <.010 <.010 NIA NIA Oil &Grease NIA NIA NIA NIA <br /> Toluene .018 .018 NIA NIA Heavy Metals NIA NIA NIA NIA <br /> Mineral Spirits NIA NIA NIA NIA Lead NIA N/A NIA NIA <br /> MTBE NIA NIA NIA NIA <br /> Comments: DIESEL CONTAMINATION EVIDENCED IN SOIL SAMPLES COLLECTED AT TIME OF T.R. SITE <br /> ASSESSMENT WITH SOIL BORING COULD NOT CONFIRM CONTAMINATION; 3 BORINGS, 5 SAMPLES ND. <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? <br /> Monitoring/Vapor wells decommissioned: NIA Number Decommissioned: NIA Number retained: NIA <br /> List enforcement actions taken:. NOR SENT , <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: LAURIE C LA Title: REHS, PROGRAM MANAGER <br /> Signature: Date: <br /> R <br /> VI. ent 1 Valley Regional Water Quality Control Board (RB) Notification <br /> D Submitted to RB: 02/04/98 Response Date: 08103/98 <br /> _ S <br /> RB Staff: MARK LIST Response: CONCURRENCE <br /> Title: ENGINEERING GEOLOGIST <br /> VII, Additional Comments, Data, etc. <br /> SOIL ONLY; LOW RISK SOIL CASE <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 /> ii <br /> i <br /> k <br />