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Subpart 56-15

CLEANUP PROCEDURES

Sec.
56-15.1     General requirements
56-15.2     Post-abatement requirements
56-15.3     Demolition requirements
56-15.4     Minor asbestos projects

Historical Note:  Supbart (§§56-15.1 - 56-15.4) filed July 7, 1987 eff. July 28, 1987.

§ 56-15.1   General requirements.

     The following cleanup procedures shall be required for all large and small abatement projects:

     (a)   Frequency for containerizing.  Cleanup of accumulations of loose asbestos material shall be performed whenever enough loose asbestos material has been removed to fill a single leak-tight container of the type commensurate with the material properties. In no case shall cleanup be performed less than once prior to the close of each working day. Asbestos material shall be kept wet until cleaned up.

     (b)   Frequency for dust.  Accumulations of dust shall be cleaned off all surfaces on a daily basis using HEPA vacuum and/or wet-cleaning methods.

     (c)   Frequency for enclosures.  Decontamination enclosures shall be HEPA-vacuumed and/or wet-cleaned at the end of each shift.

     (d)   Cleanup tools and equipment.  Accumulations of asbestos waste material shall be containerized utilizing HEPA vacuums or rubber or plastic dust pans, squeegees or shovels. Metal shovels shall not be used to pick up or move waste.

Historical Note:  Sec. filed July 7, 1987 eff. July 28, 1987.

§ 56-15.2   Post-abatement requirements.

     The following cleanup procedures shall be required after completion of all abatement activities:

     (a)   Cleanup tools and equipment.  All accumulations of asbestos waste material shall be containerized, utilizing HEPA vacuums or rubber or plastic dust pans, squeegees or shovels. Metal shovels shall not be used to pick up or move waste. HEPA vacuums shall be used to clean all surfaces after gross cleanup.

     (b)   First cleaning.  All surfaces in the work area shall be first wet-cleaned using rags, mops and sponges. To pick up excess liquid and wet debris, a wet-purpose shop vacuum may be used and shall be decontaminated prior to removal from the work area. Encapsulant use in such cleaning shall be performed consistent with section 56-12.1(i) of this Part.

     (c)   First sheeting removal.  The cleaned, exposed barrier layer of plastic sheeting shall be removed from walls and floors. Windows, doors, HVAC system vents and all other openings shall remain sealed. Decontamination enclosure systems shall remain in place and be utilized.

     (d)   Second cleaning and sheeting removal.  After the first cleaning, at least 12 hours shall be allowed for asbestos to settle. Thereafter, all objects and surfaces in the work area shall be HEPA- vacuumed and/or wet-cleaned. The remaining plastic, on walls and floors only, shall then be removed. All windows, doors, HVAC system vents and all other openings shall remain sealed.

     (e)   Third cleaning.  After the second cleaning, at least 12 hours shall elapse before HEPA- vacuuming and/or wet-cleaning all surfaces in the work area. The negative pressure ventilation units shall remain in continuous operation during the settling periods and the third cleaning.

     (f)   Removal of waste.  All containerized waste shall be removed from the work area and the holding area.

     (g)   Removal of tools and equipment.  All tools and equipment shall be removed from the work area and decontaminated as per this Part.

     (h)   Clearance air monitoring.  Clearance air monitoring, as per the schedule for air sampling and analysis, shall be conducted.

     (i)   Removal of isolation barriers.  The isolation barriers shall be removed only after satisfactory clearance air-monitoring results have been achieved.

Historical Note:Sec. filed July 7, 1987; amd. filed Oct. 18, 1991 eff. Jan. 1, 1992. Amended (b).

§ 56-15.3   Demolition requirements.

     The following cleanup procedures shall be required for demolition projects:

     (a)   Method, tools and equipment.  All accumulations of asbestos waste material shall be containerized and removed. Metal shovels may be used to pick up or move waste, except in the vicinity of any isolation barriers which could be breached. The areas around isolation barriers shall be cleaned utilizing rubber or plastic dust pans, squeegees or shovels. To pick up excess liquid and gross wet asbestos waste material, a wet-purpose shop vacuum may be used and shall be decontaminated prior to removal from the work area.

     (b)   Removal of waste.   All containerized waste shall be removed from the work area and the holding area.

     (c)   Cleanup of surfaces.  All surfaces in the work area shall be wet-cleaned using rags, mops and sponges. HEPA vacuums shall be used to clean all surfaces after gross cleanup.

     (d)   Plastic sheeting removal.  Where porous floor or cinderblock-like materials have been plasticized for surface barrier containment, each layer of plastic in succession shall be cleaned as in subdivision (c) of this section, sprayed with a thinned encapsulant and removed when dry.

     (e)   Removal of tools and equipment.  All tools and equipment shall be removed from the work area and decontaminated as per this Part.

     (f)   Clearance air monitoring.  Clearance air monitoring, as per the schedule for air sampling and analysis, shall be conducted.

     (g)   Removal of isolation barriers.  The isolation barriers shall be removed only after satisfactory clearance air-monitoring results have been achieved.

Historical Note:  Sec. filed July 7, 1987; amd. filed Oct. 18, 1991 eff. Jan. 1, 1992. Amended (d).

§ 56-15.4   Minor asbestos projects.

     If a glovebag or tent is used and fails or loses its integrity, the following procedures shall be required:

     (a)   Isolation barrier construction.  An isolation barrier shall be constructed as follows:

 

     (1)  HVAC isolation.  The HVAC systems shall be shut down immediately and all openings shall be sealed with at least six-mil fire-retardant plastic sheeting and duct tape.

     (2)  Uncontaminated areas.  Passageways to uncontaminated areas of the building or structure shall be sealed with at least six-mil fire-retardant plastic sheeting and duct tape.

     (b)   Negative air pressure equipment ventilation.Negative air pressure equipment ventilation that complies with Subpart 56-6 of this Part shall be installed and utilized.

     (c)   Cleanup.  Cleanup shall be accomplished as follows:

 

     (1)  Method, tools and equipment.  All accumulations of asbestos waste material shall be containerized. Metal shovels or HEPA vacuums may be used to pick up or move waste, except in the vicinity of any isolation barriers which could be breached. The areas around the isolation barriers shall be cleaned utilizing rubber or plastic dust pans, squeegees or shovels. HEPA vacuums shall be used to clean all surfaces after gross cleanup.

     (2)  Cleanup of surfaces.  All surfaces in the work area shall be first wet-cleaned using rags, mops and sponges.

     (3)   Second cleaning.  After the first cleaning, at least 12 hours shall be allowed for asbestos to settle. Thereafter, all objects and surfaces in the work area shall be HEPA-vacuumed and/or wet-cleaned. The isolation barrier shall be breached for entry and exit with minimal frequency and shall be resealed immediately. All windows, doors, HVAC system vents and all other openings shall remain sealed.

     (d)   Removal of contaminated equipment and waste.  Contaminated equipment and all containerized waste shall be removed from the work area.

     (e)   Clearance air monitoring.  Clearance air monitoring, as per the schedule for air sampling and analysis, shall be conducted.

     (f)   Removal of isolation barrier.  The isolation barrier shall be removed only after satisfactory clearance air monitoring results have been achieved.

Historical Note:  Sec. filed July 7, 1987; amd. filed Oct. 18, 1991 eff. Jan. 1, 1992.

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