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•� - A Case Closure Summary Page 2 <br /> ��� beaking Underground:�Fuel Storage Tank Program <br /> IIite4rease 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) 41 40 29 <.5ppb Xylene 2.0 <.005 14 <,Sppb <br /> TPH (Diesel) N/A N/A Ethylbenzene .32 <.005 .33 <.5ppb <br /> Benzene .012 <.005 .043 <.5ppb Oil & Grease. <br /> Toluene .6 <.005 7.0 <.5ppb Heavy metals" <br /> Other Other <br /> Comments (Depth of Remediation, etc.) : <br /> ALL WATER SAMPLES IN PPB. CONTAMINATED SOIL EXCAVATED DURING LOW GROUNDWATER PERIOD, <br /> GROUNDWATER BELOW DETECTION LIMITS AND MW DESTROYED. <br /> t <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board <br /> Basin Pian? (Yes) No <br /> Does completed corrective action protect potential beneficial uses per the Regional Board <br /> Basin Plan? (Yes) No <br /> Does corrective action protect public health for current land use? (Yes) No <br /> Site management requirements: N/A <br /> Should corrective action be reviewed if land use changes? (Yes) No <br /> Monitoring wells Decommisioned: (Yes) No Number Decommisioned: 5 Number Retained: 0 <br /> List enforcement actions taken: <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> Name:DONNA HERAN Title: DIRECTOR PHS/EHD <br /> Signature: ✓ Date: -11� <br /> i <br /> VI. RWQCB Notification <br /> Date Submitted to RB: RB Response: <br /> RWQCB Staff Name: Title: Date: <br /> VII. Additional Comments, Data, etc. <br /> GROUNDWATER RESULTS IN SECTION III. ABOVE IN PPB NOT PPM <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 />