N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 56-9.1 - Final cleaning procedures

The following cleanup procedures shall be required after completion of Phase II B activities:

(a) Continuous negative pressure ventilation. If required during Phase II B, the negative pressure ventilation units shall remain in continuous operation during implementation of Phase II C, including observance of settling/waiting periods and drying times.

(b) First cleaning, lockdown encapsulation and top layer removal. All surfaces of the regulated abatement work area shall be first wet-cleaned using rags, mops and sponges. For collecting excess liquid and wet debris, a wet purpose HEPA filtered shop vacuum may be used and shall be emptied prior to removal from the regulated abatement work area. When the first cleaning has been completed, a thin coat of a lockdown encapsulant agent shall be applied to all surfaces within the regulated abatement work area which were not the subject of removal or abatement. In no event shall lockdown encapsulant be applied to any surface which was the subject of removal or other abatement response activity, prior to obtaining satisfactory clearance air results for the regulated abatement work area. Once the lockdown encapsulant has been applied, and the appropriate waiting/settling or drying time requirements of this Subpart have been met, the cleaned, exposed top barrier layer of plastic sheeting shall then be removed from walls, ceilings and floors. Windows, doors, HVAC system vents and other openings shall remain sealed. Decontamination system enclosures shall remain in place and shall continue to be utilized.

(c) Second cleaning and bottom layer removal. After the top layer of plastic sheeting has been removed, all objects and surfaces in the regulated abatement work area shall be HEPA-vacuumed and then wet-cleaned. After the second cleaning and waiting/settling or drying time requirements of this Subpart, then the remaining bottom layer of plastic sheeting on walls, ceilings and floors shall be removed. All windows, doors, HVAC system vents and all other openings shall remain sealed.

(d) Third or final cleaning and visual inspection. After the bottom layer of plastic sheeting has been removed, all objects and surfaces in the regulated abatement work area shall be HEPA-vacuumed and then wet-cleaned. After the final cleaning is complete, clearance air sampling shall not commence until the appropriate waiting/settling or drying time requirements of this Subpart have elapsed and a visual inspection has been completed by the project monitor to confirm that the scope of abatement work for the asbestos project is complete, and no visible asbestos debris/residue, pools of liquid, or condensation remain. The asbestos abatement contractor supervisor must complete a satisfactory visual inspection for completeness of abatement and cleaning, prior to commencement of the project monitor visual inspection.

(1) Project monitor visual inspection. An appropriately trained and certified project monitor, contracted by the building/structure owner, independent of the asbestos abatement contractor, shall complete the visual inspection. The project monitor visual inspection for completeness of abatement and completeness of cleanup shall be performed as per the provisions of the current ASTM standard E1368 "Standard Practice for Visual Inspection of Asbestos Abatement Projects". If the property owner is the asbestos abatement contractor for the asbestos project, the owner shall contract with an independent project monitoring firm asbestos contractor for the necessary visual inspection on the asbestos project. The asbestos abatement contractor and property owner, prior to the scheduling of the required visual inspection, shall provide a complete abatement scope of work for the asbestos project to the project monitor. An entry shall be made into the asbestos abatement contractor supervisor's daily log by both the supervisor and the individual performing the inspection, detailing the findings of the visual inspection. The full name and NYSDOL asbestos handling certificate number of the certified individual performing the inspection shall also be documented in the supervisor's daily log.

(e) Exemption from multiple cleaning and sheeting removal. When the regulated abatement work area is not required to be plasticized, or when a tent enclosure unit is used, one thorough final cleaning followed by the observance of the appropriate waiting/settling or drying time requirement of this Subpart shall be required. For regulated abatement work areas where one layer of plastic sheeting is allowed, such as the use of spray plastic or pre-demolition asbestos projects, two cleanings (first and final), each followed by observance of the appropriate waiting/settling or drying time requirements of this Subpart is required. Cleanings shall consist of all surfaces in the regulated abatement work area being HEPA vacuumed first and then wet-cleaned.

(f) Waiting/settling and drying times requirements. For sequential removals as per section 56-8.6(b) of this Part, the most stringent waiting/settling/drying time shall be observed.

(1) The following waiting and drying times per material abated shall be observed for each stage of cleaning as per this Subpart:

(i) fireproofing, plaster, TSI and other friable materials -12 hours

(ii) abrasive removals of floor tile/mastic with machinery -12 hours (such as a bead blaster, grit blaster, etc.)

(iii) manual removal of floor tiles/mastic - 4 hours

(iv) manual abatement of interior non-friable materials - 4 hours

(v) incidental disturbance asbestos project - 4 hours

(vi) tent with glovebag abatement of TSI - 2 hours

(vii) intact transite panel removals indoors - 2 hours

(viii) Exterior non-friable ACM abatement without negative pressure enclosure - None

(h) Decontamination of tools and equipment. All equipment (except negative air ventilation system) and tools shall be removed from the regulated abatement work area and properly decontaminated as per this Part, prior to commencement of clearance air sampling.

Notes

N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 56-9.1