N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 56-8.6 - Multiple abatement within a single regulated abatement work area

(a) Simultaneous abatement. Simultaneous or concurrent abatement of multiple types of ACM within a single regulated abatement work area shall not be allowed, unless the multiple types of ACM are part of the same system (e.g., floor tile/cove base and mastics, or ceiling/wall tile and mastic). Simultaneous removals are allowed on a project as long as they are within different regulated abatement work areas.

(b) Requirements for sequential abatement. When multiple types of abatement work are done in a common regulated abatement work area or enclosure, a sequential order of abatement is required as shown below.

(1) Initial plasticizing. Initial plasticizing of the containment area shall be as required for the most stringent case of removal.

(2) Sequential removal. Sequential removal shall allow for only one type of removal of ACM at a time in a sequential order within the work area until that type of material is completely removed. Thereafter, another type of ACM can be removed within the same work area. Relief from plasticizing is for the surfaces to be abated only at the time of that specific material abatement. Other surfaces shall be plasticized as the material being abated dictate, except as noted below.

(i) Order of sequential abatement. The following sequence of abatement within a work area shall begin at the ceiling or upper level and progress one material at a time down to the floor and from most friable material to least friable material.

(ii) Example:

(a) First. All ceiling fireproofing, ceiling plaster or similar ceiling OSHA Class I friable material shall be completely abated so that no visible exposed ACM, PACM or asbestos material remains. Then the friable mechanical/tank insulation, isolation/ vibration damper material and thermal pipe, ducts, pipe fitting insulation, mudded firebrick, or similar OSHA Class I or Class II friable material shall be completely abated so that no visible exposed material remnants remain. Glovebags may be used. After all friable ACM has been abated, the area shall be cleaned of all debris/residue using HEPA vacuuming and wet wiping.

(b) Second. OSHA Class II non-friable materials shall be abated. If other areas/surfaces were abated, no new plasticization shall be required. Ceiling and wall tiles, transite, interior window glazing, expansion joint, millboard and other NESHAP Category I and II non-friable ACM shall be abated so that no visible exposed material remnants remain and the area shall be cleaned of all debris/residue using HEPA vacuuming and wet wiping.

(c) Last. OSHA Class II non-friable flooring abatement shall be last. Non-friable ACM flooring materials and ACM mastic shall be abated so that no visible exposed material remnants remain and the area shall be cleaned of all debris/residue using HEPA vacuuming and wet wiping. If beadblaster or a similar abrasive type of abatement method is used, full work area preparation, including establishment of negative pressure filtration systems, shall be required and this abatement may be done as one of the first types of abatement and then the flooring area abated shall be re-plasticized with a double-layer of six-mil fire-retardant plastic sheeting, to be utilized as a dropcloth during the remaining abatement.

(iii) Temporary walls. New temporary hardwalls used to separate an enclosed regulated abatement work area into smaller regulated abatement work area enclosures shall be constructed as per section 56-7.11(b) of this Part. Existing columns, I beams and interior walls may be used to support or to act as part of the new containment walls provided that the existing walls, columns, and I beams to which these temporary walls are to be attached or used shall be completely abated prior to the erection of these new containment walls to allow this attachment. Caulk, fire-retardant expandable foam or duct tape shall be used to form an airtight seal for these partitions.

(a) Airlock. Each newly enclosed regulated abatement work area shall have an attached airlock as defined in section 56-2.1 of this Part, and the airlock shall be constructed at the enclosure entrance, as per section 56-7.5(b)(11) of this Part. Each enclosure and airlock shall be cordoned off 25 feet from its perimeter. Critical openings within the cordoned off area shall be covered with two layers of six mil fire-retardant polyethylene in conformance to section 56- 7.11(a) of this Part.

(iv) Intermediate completions. On completion of each type of asbestos abatement within these work area enclosures, a complete single clean of all surfaces in the entire area - ceiling, walls and floors - shall be performed by HEPA vacuuming and wet wiping. No final clearance air samples shall be required for each individual type of material abatement, until the last type of ACM, PACM or asbestos material is abated. Each intermediate completion shall include a visual inspection for completeness by the supervisor. Results of the visual inspection and time of intermediate completion shall be documented by the supervisor in the daily project log.

(v) Final required cleaning. A complete single clean of all surfaces in the entire area -- ceiling, walls and floors, followed by a visual inspection as described in Subpart 56-9 of this Part shall be performed by HEPA vacuuming and wet wiping, after all abatement is complete.

(vi) Final clearance air samples. After the final cleaning and visual inspection requirements are completed and the final settling/drying period is observed, prior to dismantling the regulated abatement work area, Phase IIC final clearance air samples shall be collected and satisfactory clearance air results obtained as per section 56-9.2 of this Part.

Notes

N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 56-8.6