NYC-WTC_000233286

NYC 9/11 Public Portal Document

enclosure shall be installed to serve as an isolation barrier, dependent upon the size and configuration of the area disturbed. Then negative air ventilation systems shall be established as per Section 56-7.8(a). (ii) For outdoor regulated abatement work areas, all adjacent building openings within twenty-five (25) feet of the outermost limit of the disturbance shall be sealed with two (2) layers of six-mil fire retardant plastic sheeting. (2) Tent enclosures if necessary, shall be constructed as per section 56- 7.11 (f)(1) to surround the area of disturbance. The tent shall be sealed to the surfaces beyond the limits of contamination, and those surfaces of the tent enclosure (wall, ceiling, or floor) shall not require plastic sheeting. An attached airlock is required. (3) Due to the nature of this work, background air samples shall not be required. (4) Wet methods shall be employed to minimize further disturbance of the affected material during cleanup activities. No removal of undisturbed ACM, PACM or asbestos material shall be allowed during the incidental disturbance cleanup emergency asbestos project. (5) Visual Inspection. Once final cleaning is complete, a visual inspection shall be completed by the supervisor to confirm that the scope of abatement work for the asbestos project is complete, and no visible debris/residue, pools of liquid, or condensation remain. (6) Removal of Personal Protective Equipment. The worker’s disposable protective clothing shall be removed and left in the incidental disturbance work area upon exiting. (7) Exiting Procedures. After exiting the tent, workers shall immediately don clean protective clothing within the attached airlock. Workers shall then proceed immediately to a shower for decontamination. (8) Final Cleaning and Clearance Procedures. Final clean-up procedures shall comply with Section 56-9, except that only one stage of cleaning (final) is to be performed. Lockdown encapsulant use is not required except for porous contaminated surfaces subject to cleaning. After clean­ up is complete, a visual inspection followed by completion of clearance procedures, shall be performed consistent with the requirements of Subpart 56-9. 56-11.3 Minor Asbestos Projects.

(a) Air Sampling and Analysis. Air sampling and analysis on a minor asbestos project conducted under this Section shall be conducted in accordance with the requirements of Subpart 56-4 of this Part.

12 NYCRR56 Subpart 11, Page 97

CITY_21MC100_0 03235117

NYC-WTC_000233383