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. � <br /> PCB Decontamination Area - Building 7.07 <br /> Estimated Closure Date: Year 2040 based on useful life of 45 years. <br /> This is a decontamination area, no storage is done at this location. <br /> CLOSURE SCHEDULE <br /> Number of Days Prior to Completion <br /> Task. of Closure (Task to be COMDleted) <br /> Stop receiving wastes 300 <br /> Notify DOHS 180 <br /> Remove wastes 120 <br /> Disassemble or demolish collection facility 90 <br /> ' <br /> ', Decontaminate facility lO <br /> Final inspection and certification 0 <br /> Post Closure Maintenance it required <br /> ^ <br /> CLOSURE STEPS <br /> l . Stop receiving wastes . <br /> 2. Notify DOHS of proposed action. <br /> 3. Contact DRMO to have wastes received at licensed TSD facility. <br /> ` <br /> 4. Steam clean floors, exterior concrete ula6m , curbs and sumps . Collect, <br /> analyze and dispose of rinse water in accordance with current environmental <br /> regulations. ^- <br /> 5. Inspect all surfaces for residues and signs of deterioration. <br /> O. Take surface samples in areas of neuiduea , cracks or other deterioration. <br /> ' <br /> ?. Take a concrete core sample in each pit. <br /> 8. Take additional core samples if indicated by previous sampling. Conduct <br /> all sampling and analysis in accordance with Article ll . Title 22. California <br /> Administrative code. <br /> Q. Either treat contaminated material onsite or send to offiite disposal at <br /> licensed T3DF. , r <br /> lO. Backfill excavations to grade with engineered fill material . <br /> ll . The Commanding Officer and an independent California registered Civil <br /> Engineer will certify that work has been completed in accordance with the <br /> closure plan. DOHS to give final approval of the closure. <br /> 3 <br /> ';q?nxzs /mommusxo) iw'MZrKJMW3H � <br />