Revised scopes of work for indoor dust cleaning program, August

NYC 9/11 Public Portal Document

allow cleaning of the underlying surface and will be returned to their original location. q- Dishwasher toe plates will be removed and the floor beneath the appliance will be cleaned. r. Baseboard heaters will be cleaned. Protective covers on finned radiant heaters and baseboard heaters will be removed to expose heat elements. Fins are to be brushed and vacuumed to remove dust. s. All cleaning equipment will be vacuumed and/or wet wiped after completion ofthe cleaning and before removal from the work area.

4. HEPA air filtration devices (AFDs) will run continuously during all cleaning activities, as appropriate given site conditions. AFDs shall be installed and operated to provide a minimum ofone air change every 15 minutes. Make up air should be derived from a non-impacted source (i.e. open window or common spaces previously cleaned).

5. A minimum of one asbestos supervisor shall be present in each building during work.

6. A Cleaning Checklist (to be developed by EPA) will be completed by the cleaning contractor as tasks are completed to document the progress of the cleaning.

7. The cleaning contractor shall notify the monitoring contractor immediately upon completion ofthe cleaning. The Monitoring Contractor will conduct a thorough visual inspection to verify the absence ofvisible dust accumulations. Ifdust is observed the cleaning contractor will reclean as necessary at no additional cost.

8. Air sampling shall be performed by the Monitoring Contractor after the area is free of dust accumulations as determined by the Monitoring Contractor. The residence will be recleaned and retested if the clean-up criteria of0.0009 fibers/cc (PCME measured by TEM) is not achieved or if determined necessary by EPA. This clean-up criterion may be reevaluated and revised, if determined necessary based on field conditions and analytical limitations.

9. Any damage or loss that occurs during cleaning is the responsibility ofthe cleaning contractor. The cleaning contractor is not responsible for damage or loss caused by the acts of third parties not involved in the cleaning activities.

10. Residents may identify and tag certain furnishings (e.g. carpets and fabric covered furniture) for disposal rather than cleaning. Disposal ofresidents’ personal property shall not occur without prior written authorization by the owner.

11. Disposal ofall wastes generated during the cleaning shall be the responsibility ofthe contractor. All waste generated shall be treated as asbestos-containing material (ACM). Transportation and disposal of generated waste shall be in compliance with all applicable rules and regulations.

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NYC-WTC_000139107