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Case Closure Summary Page 2nderd Fuel ` j , <br /> e Tank <br /> III. Release and Site Chard rizationuinformationr(coat nue {gra <br /> Maxi== Documented Contaminant Concentrations--Before and After Cleanup <br /> Contaminant Soil (ppm) Water (PPB) Contaminant Soil <br /> Before After Before After (ppm) Water (PPB) <br /> Before After Before After <br /> TPH (Gas) 313 ---- ---- 170 Xylene 6.2 <br /> TPH (Diesel) ---- ---- ---- ---- Ethylbenzene ____ _- 1010 4,2 <br /> Benzene 0.051 ---- 24.6 2.0 Oil & Grease - 1_94 -1.1 <br /> -- <br /> �EToluene -5_5 ---- 73.2 <0.3 LEAD metals 6.3 ---- 0.05 ---- <br /> Other <0.01 <br /> E <br /> nts (Depth of Remediation, etc.) : <br /> WERE REMOVED IN 1980. INVESTIGATION SHOWS MINIMAL IMPACT TO SOIL AND GROUNDWATER <br /> THE LAST 17 YEAR PERIOD, BENEFICIAL USES OF GROUNDWATER ARE <br /> CTED, NOW AND IN THE FUTURE. <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board <br /> Basin Plan? YES <br /> Does completed corrective action protect potential beneficial uses per the Regional Board <br /> 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 Decommisioned: NO Number Decommisioned: 0 Number Retained: 4 <br /> List enforcement actions taken: <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: DONNA HERAN Title: DIRECTOR, ENVIRONMENTAL HEALTH DIVISION <br /> Signature: Date: 17 <br /> VI. RWQCB Notifica ion <br /> Date Submitted to RB: RB Response: <br /> RWQCB Staff Name: Title: Date: <br /> VII. Additional Comments, Data, etc. <br /> This document and the related CASE CLOSURE LETTER, Shall be retained by the lead agency <br /> as part of the official site file. (08/24/93) <br /> Exhibit N Page 2 of 2 <br />