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- Case Closure Summary Page 2 <br /> Leakin fnderground Fuel Storage Tank F ram <br /> III. Release and Site Charac4Vrization Information (continuedY <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) Xylene .047 ,041- <br /> TPH (Diesel) 17;230 17;230 Ethylbenzene .016 .0140 <br /> Benzene Oil & Grease <br /> Toluene Heavy metals <br /> Other Other <br /> Comments (Depth of Remediation, etc.) : FOUR (4) EXPLORATORY SOIL BORINGS WERE ADVANCED <br /> THROUGH UST BACKFILL AND INTO THE NATIVE SOILS SURROUNDING THE REMOVED 6,000 GALLON UST. <br /> SOIL SAMPLES COLLECTED WERE NONDETECTABLE FOR BTEX, TPH-D. <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board <br /> Basin Plan? 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: NONE <br /> Should corrective action be reviewed if land use changes? Yes No <br /> Monitoring wells Decommisioned: Yes No Number Decommisioned: Number Retained: <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: DO HERAN Title: DIRECTOR, ENVIRONMENTAL HEALTH DIVISION <br /> Signature: Date: <br /> VI. RWQCB Notification <br /> Date Submitted to RB: N/A 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 />