NYC-WTC_000209480

NYC 9/11 Public Portal Document

the collapse of the World Trade Center £ind if these systems require cleaning. a. In cases where cleaning is requested for an individual residence, portions ofthe HVAC system dedicated to that residence will be evaluated. b. In cases where cleaning is requested for a whole building, the building’s HVAC system will be evaluated as a whole. c. HVAC assessments shall be conducted in accordance with the National Air Duct Cleaners Association (NADC A) General S]3ecification for the Cleaning of Commercial Heating, Ventilating and Air Conditioning Systems and the NADCA Assessment, Cleaning and Restoration Standard (ACR 2002). d. The results ofthe whole building ID/AC system evaluations shall be documented in a leW report. This report shall be provided to DEP and EPA within 2 business days of the completion of the evaluation. This report shall include the name and qualifications of inspector, date of inspection, building location, a description ofthe HVAC system, the basis for the determining whether or not the system was impacted by the collapse ofthe WTC and if the system requires cleaning. Deliverables

The Project Monitor shall record ifthe HVAC systems has been impacted by dust or debris from the collapse of the WTC, if the HVAC system has been evaluated and cleaned subsequent to September 11,2001 (ifyes, then when and by whom) and ifthe H VAC system requires cleaning. This information shall be provided via F2L or an agreed Upon alternative electronic format or website approved by EPA within 24 hot rs of activity.

6. HVAC systems that have been impacted by dust or debris from the collapse of the World Trade Center will be cleaned. In the event that a I lVAC system for an entire building requires cleaning, a separate, site specific contract will be awarded by DEP for this work. If only a portion of a HVAC system requires cleaning, then the cleaning contractor will conduct the cleaning utilizing specialized labor trained and experienced in duct cleaning. a. The monitoring contractor shall schedule and oversee the cleaning of HVAC systems. b. The Monitoring Contractor shall inspect HVAC systems or portions thereofcleaned to verify cleanliness. Ifvisible dust or other contaminants are evident through visual inspection or testing, then the Monitoring Contractor will direct the HVAC cleaning contractor to relean those portions of the system where dust or other contaminants are present and reinspect. c. HV AC cleaning, and cleanliness inspections shall be conducted in accordance with the National Air Duct Cleaners Association (NADCA) General Specification for the Cleaning of Commercial Heating, Ventilating and Air Conditioning Systems and the NADC A Assessment, Cleaning and Restoration Standard (ACR 2002).

7. Sampling of residences and common spaces where cleaning has not been requested a. Based on consultation with resident, aggressive or modified aggressive air sampling will be

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