Kansas Administrative Regulations › Agency 28 - DEPARTMENT OF HEALTH AND ENVIRONMENT › Article 50 - ASBESTOS CONTROL › Section 28-50-9 - Work practices for asbestos-removal projects in occupied spaces

Current through Register Vol. 43, No. 28, July 11,
			 2024
(a) Each
			 asbestos-removal project that involves the removal of friable
			 asbestos-containing materials from a structural item or equipment that is
			 located in any area that can be expected to subsequently be reoccupied by any
			 person after the project is completed, or in an area that is only directly
			 accessible from an area that is, or subsequently will be, occupied by any
			 person other than persons directly involved in the project, shall be conducted
			 in accordance with the following requirements:
(1) Each proposed work area shall be isolated
			 from other areas of the building and outside areas by erecting temporary
			 partitions that are rigid and airtight around the work area or by installing
			 airtight seals over doorways, windows, and ventilation system openings, except
			 that doorways between the work area and decontamination facilities and waste
			 load-out areas shall be closed off with a control curtain. At least one
			 temporary partition or seal shall contain a clear viewing area that is 18
			 inches or more in height and width and is installed in a manner that will allow
			 direct visual observation of the work area from a location outside of the work
			 area. Plastic sheeting used for the construction of airtight seals shall be not
			 less than four mils thick. Whenever possible, each heating and ventilation
			 system serving the work area shall be shut down and locked out. If these
			 systems cannot be shut down, special provisions shall be made to assure that
			 airborne contamination from the work area cannot enter the ventilation system
			 and be carried to other areas of the building. Appropriate warning signs shall
			 be prominently posted at all entryways into the work area. Provisions shall be
			 made to prevent any person other than those persons having responsibilities
			 directly related to the project from entering the area before the requirements
			 of paragraphs (9) and (12) of this subsection are met and the project is
			 approved in accordance with all other applicable requirements.
(2) All movable furnishings, equipment, and
			 fixtures in the proposed work area shall be precleaned with a HEPA
			 filter-equipped vacuuming device or wet cleaning methods. After cleaning, the
			 items shall be removed from the work area and stored in an area that is not
			 subject to contamination with asbestos fibers. The items shall not be returned
			 to the work area until final room cleanup has been completed and approved in
			 accordance with requirements applicable to the project.
(3) All structural item surfaces, other than
			 those from which asbestos is to be removed, and all non-movable furnishings,
			 equipment, and fixtures remaining in the proposed work area shall be precleaned
			 with a HEPA filter-equipped vacuuming device or wet cleaning methods and
			 covered with not less than four-mil-thick plastic sheeting, except that floors
			 shall be covered with a minimum of two layers of six-mil-thick plastic sheeting
			 that extends up the walls at least 12 inches. Plastic sheeting on walls shall
			 be affixed to the wall in a manner that assures that it will remain in position
			 throughout the length of the project and shall overlap the floor sheeting at
			 least 12 inches above the intersection of the walls with the floor. Any tears
			 that are noted in the protective plastic sheeting required by this subsection
			 shall be immediately repaired.
(4)
			 HEPA filter-equipped ventilation fans shall be installed in a manner that will
			 continually exhaust air from all locations within the work area. The total
			 capacity of the fans shall be sufficient to remove the entire volume of air
			 contained in the workroom area within 15 minutes or less, unless a longer time
			 period is specifically approved by the department. The removed air shall be
			 discharged through a duct that has been installed through the plastic on the
			 walls in a manner that will provide an airtight seal between the plastic and
			 the outside surface of the duct. The exhausted air shall be discharged outside
			 of the building whenever possible and shall not be discharged inside the
			 building, unless this discharge is specifically approved by the department in
			 writing. Each ventilation fan shall be continuously operated throughout the
			 duration of the project until the action required by paragraph (12) of this
			 subsection is completed. Each fan shall be operated in a manner that
			 establishes, and maintains, a flow of air into the work area from all adjacent
			 areas of the building as demonstrated by use of smoke-producing tubes. At a
			 minimum, these determinations shall be made and the results recorded before
			 initiation of asbestos-removal operations and at the start of each day's
			 operation.
(5)
(A) A decontamination facility shall be
			 provided between the work area and building areas intended to remain
			 uncontaminated with asbestos fibers generated by the asbestos-removal
			 operations. All persons entering or leaving the work area shall pass through
			 and use the decontamination facility. Each decontamination facility shall
			 consist of the following designated areas, which are each to be entered through
			 a doorway that is covered by a control curtain:
(i) A clean room that shall be maintained
			 free of asbestos-containing debris and shall be first entered by any persons
			 entering the work area. The clean room shall be constructed in a manner that
			 provides adequate space for removing or putting on street clothing, putting on
			 and fit-testing respirators, and putting on protective clothing and other
			 protective equipment required to be worn in the work area.
(ii) A shower room that shall be first passed
			 through by any person that moves from the work area into the clean room. These
			 persons shall be required to shower before entering the clean room. Each shower
			 room shall be provided with at least one shower head that is supplied with hot
			 and cold water. Adequate quantities of soap, hair shampoo, and towels shall be
			 provided to accommodate each person who emerges from the work area. Shower
			 enclosures shall be leak proof and constructed of disposable or easily washable
			 material. Shower water may be drained directly into the building's plumbing
			 system or collected for subsequent disposal in accordance with the requirements
			 of K.A.R. 28-50-14.
(iii) An
			 equipment room that shall be passed through before the shower room can be
			 entered from the work area. The equipment room shall be used for temporary
			 storage of contaminated tools, equipment, and protective clothing used in the
			 work area. The floor and walls of the room shall be lined with not less than
			 six-mil-thick plastic sheeting. Tools, equipment, and protective clothing shall
			 be free of gross contamination before removal from the work area into the
			 equipment room.
(B) All
			 decontamination facility areas shall be fully enclosed and shall be contiguous
			 to each other and the work area unless connected to one another by enclosed
			 passageways that are effectively isolated from areas intended to remain free of
			 asbestos contamination. Decontamination facilities shall remain in place and in
			 functional condition until removal of airtight seals and partitions is
			 authorized in accordance with the requirements of K.A.R. 28-50-9(a)(12).
(6) A waste load-out
			 area may be constructed between the work area and the exit through which
			 asbestos-containing waste materials are intended to be removed from the work
			 area. If a waste load-out area is provided, it shall be totally enclosed, and
			 the doorway between the work area and the waste load-out area shall consist of
			 a combination of control curtain and rigid door. The floor of the load-out area
			 shall be covered with not less than six-mil-thick plastic sheeting, which shall
			 be kept clean and free of visible asbestos-containing debris. Floor covering
			 shall be removed upon completion of the project and disposed of in compliance
			 with the requirements of K.A.R. 28-50-14. Asbestos-containing waste shall not
			 be transferred from the waste load-out area unless it has been placed in
			 containers that comply with the requirements of K.A.R. 28-50-14(a). Waste
			 containers shall be removed from the waste load-out area only by persons who
			 enter the load-out area from an area that is intended to be maintained free of
			 asbestos-containing debris generated by the removal operations. The doorway
			 between the work area and load-out area shall be kept secured except when waste
			 materials are being transferred from the work area. The load-out area doorway
			 shall not be used as an entrance or exit by persons who leave or enter the work
			 area.
(7) All exposed surfaces of
			 friable asbestos-containing materials shall be maintained in a wet condition
			 while the material is being removed or cleaned up from structural or equipment
			 items. Any friable asbestos-containing material shall be wetted with a water
			 solution containing an effective wetting agent. The wetting solution shall be
			 applied with a low pressure spraying system. The effectiveness of the solution
			 in penetrating the asbestos-containing materials shall be determined by
			 applying it to a small representative sample of the material before the gross
			 removal operation is initiated. The removed friable asbestos-containing
			 materials shall be maintained in a wet condition until placed in sealed
			 containers for disposal in accordance with the requirements of K.A.R. 28-50-14.
			 All accumulations of loose debris shall be removed from floors and other
			 surfaces and placed in sealed bags or containers as quickly as practicable and
			 at least daily.
(8) After the
			 asbestos-containing materials have been removed from the structural or
			 equipment items, all plastic sheeting, equipment, and surfaces in the work area
			 shall be cleaned with a HEPA filter-equipped vacuuming device or by wet
			 cleaning methods and shall be free of all visible debris, but if more than one
			 layer of plastic sheeting has been used on walls and floors, this additional
			 layer of sheeting may be removed and disposed of instead of being cleaned.
			 Sheeting that is removed shall be disposed of in compliance with the
			 requirements of K.A.R. 28-50-14. Any liquid or material that has leaked through
			 these additional layers of sheeting shall be removed by wet cleaning methods.
(9) The surfaces from which the
			 friable asbestos-containing materials have been removed shall be cleaned free
			 of all visible residues and then covered with an effective sealing material
			 before the final layer of plastic sheeting covering the floors, walls, and
			 non-movable items is removed.
(10)
			 After the sealant has dried, the plastic wall and floor coverings shall be
			 removed and disposed of in compliance with the requirements of K.A.R. 28-50-14.
			 After removal of the plastic wall and floor coverings, all surfaces in the work
			 area shall be cleaned with a HEPA filter-equipped vacuuming device or by wet
			 cleaning methods and shall be free of all visible debris.
(11) After completing the requirements in
			 paragraph (10) of this subsection, clearance monitoring, as described in
			 40 C.F.R.
			 763.90(i), as in effect on
			 July 1, 1998 and hereby adopted by reference, may be conducted. In the absence
			 of clearance monitoring, an air stream from a high speed leaf blower or
			 equivalent device shall be swept across all surfaces within the work area for a
			 period of not less than five minutes for each 1,000 square feet of surface
			 area.
(12) Each temporary
			 partition and airtight seal provided for doors, windows, and duct openings in
			 accordance with paragraph (1) of this subsection shall remain in place until
			 the sampling results from the clearance monitoring, referenced in K.A.R.
			 28-50-9(a)(11), indicate compliance or in the absence of clearance monitoring,
			 the temporary partitions and airtight seals shall remain in place for no fewer
			 than 24 hours after completion of the actions required by paragraph (11) of
			 this subsection and until the cleanup is approved in accordance with any other
			 special requirements applicable to the project.