NYC-WTC_000233286

NYC 9/11 Public Portal Document

(e) Final Cleaning and Clearance Procedures. Final clean-up and clearance procedures for abatement shall comply with Section 56-9, except that only one stage of cleaning (final) is to be performed. Lockdown encapsulant use is not required. (1) Exemption from Project Monitor Visual Inspection. Asbestos projects which are exempt from clearance air sampling requirements at one or two- family owner occupied residential buildings/structures, are also allowed an exemption from the project monitor visual inspection requirements. For asbestos projects utilizing this exemption, 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. The results of this inspection shall be documented by the supervisor in the asbestos abatement contractor daily project log, and once the asbestos project is complete the supervisor shall also obtain the owner’s written acceptance of the final results of the asbestos project within the daily project log. (f) Final Waste Removal From the Site. The requirements of Subpart 56-10 shall apply, once all asbestos project regulated abatement work areas have been completed. 56-11.7 Non-friable Flooring and/or Mastic Removal. The following Phase II abatement procedures shall apply for removal of non-friable asbestos-containing flooring and/or mastic materials including cove base and associated mastic. (Note - Full work area preparation, abatement and multiple cleanings per this Part are required for beadblaster use or other abrasive abatement method.)

(a) Air Sampling and Analysis. Air sampling and analysis on an asbestos project conducted under this Section shall be conducted in accordance with the requirements of Subpart 56-4 of this Part. (b) Regulated Abatement Work Area Preparation. (1) Establishment of Regulated Abatement Work Areas. Each regulated abatement work area shall be established and signage posted as per the requirements of Section 56-7.4. Each regulated abatement work area shall remain vacated except for certified workers until satisfactory clearance air sampling results have been obtained or the asbestos project is complete. (2) Preliminary Preparation. Regulated abatement work area preparation shall also comply with sections 56-7.1 through section 7.10, except that six (6) air changes per hour are required within the work area. (3) Critical and Isolation Barriers. Prior to the placement of critical and isolation barriers, affected surfaces shall be pre-cleaned using HEPA- filtered vacuum equipment and wet cleaning methods. All critical and isolation barriers shall be installed as per Section 56-7.11(a-b) and all seams of HVAC or other system components that pass through a regulated abatement work area shall be sealed prior to beginning Phase II

12 NYCRR56 Subpart 11, Page 107

CITY_21MC100_0 03235127

NYC-WTC_000233393