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+ a `I - <br /> Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> Ij <br /> III. Release and Site Characterization Information (continued) <br /> r <br /> ximum Documented Contaminant Concentrations--Before and After Cleanup <br /> m Water (PPB) Contaminant Soil (ppm) Water (PPB) ` <br /> ntaminant Soil (ppm) Before After Before After <br /> Before After Before After <br /> H (Gas) x10 ---- ---- ---- Xylene 0.32 ¢0.005 **5.0 ---- <br /> TPH (Diesel) 1200 200 **520 ---- Ethylbenzene Ol19 c0Y005 **2y9 ---- <br /> Benzene c0.05 c0.005 **0.3 ---- Oil & Grease - ---- ---- ---- <br /> Toluene 0.22 x0.005 **2.5 ---- LEAD metals ---- <br /> ---- ---- Other <br /> MTBE --- c0.005 <br /> 4 <br /> Comments (Depth of Remediation, eta.) : 1 <br /> EXCAVATION REMOVED BULK OF HYDROCARBON MASS FROM SITE. VERY LIMITED SOIL CONTAMINATION <br /> REMAINING. ONLY VERY LOW GRAB GROUNDWATER CONTAMINATION SHOWN. BENEFICIAL USES ARE <br /> PROTECTED, NOW AND IN THE FUTURE. **GRAB WATER SAMPLES** <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses ger 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 /> J <br /> Should corrective action be reviewed if land use changes? NO <br /> Monitoring wells Decou=isioned: NA Number pecoumiisioned: Number Retained: <br /> List einforcement actions taken: <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: j DO A ,HERAN Title: DIRECTOR, ENVIRONMENTAL HEALTH DIVISION <br /> Signature; E G�-y��U,_(ti, Date: 1 <br /> VI. RWQCB Notification <br /> Date Submitted to RB: 1,1 3I (p RB Response: CCnCjL <br /> RWQCBk!Staff Name: �. �{z 0iJc1� Title: Date: <br /> VII. Additional Comments, Data, etc. <br /> i <br /> l <br /> I� <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 />