Title 8 CCR 1529. Asbestos (DOSH)_Part 3.pdf

6/12/23, 10:36 AM California Code of Regulations, Title 8, Section 1529. Asbestos. (C) Negative Pressure Glove Bag Systems. Negative pressure glove bag systems may be used to remove ACM or PACM from piping. 1. Specifications: In addition to specifications for glove bag systems above, negative pres...

6/12/23, 10:36 AM California Code of Regulations, Title 8, Section 1529. Asbestos. (C) Negative Pressure Glove Bag Systems. Negative pressure glove bag systems may be used to remove ACM or PACM from piping. 1. Specifications: In addition to specifications for glove bag systems above, negative pressure glove bag systems shall attach HEPA vacuum systems or other devices to bag to prevent collapse during removal. 2. Work Practices: a. The employer shall comply with the work practices for glove bag systems in subsection (g)(5)(B)2.d. of this section. b. The HEPA vacuum cleaner or other device used to prevent collapse of bag during removal shall run continually during the operation until it is completed at which time the bag shall be collapsed prior to removal of the bag from the pipe. c. Where a separate waste bag is used along with a collection bag and discarded after one use, the collection bag my be reused if rinsed clean with amended water before reuse. (D) Negative Pressure Glove Box Systems: Negative pressure glove boxes may be used to remove ACM or PACM from pipe runs with the following specifications and work practices. 1. Specifications: a. Glove boxes shall be constructed with rigid sides and made from metal or other material which can withstand the weight of the ACM and PACM and water used during removal: b. A negative pressure generator shall be used to create negative pressure in the system: c. An air filtration unit shall be attached to the box: d. The box shall be fitted with gloved apertures: e. An aperture at the base of the box shall serve as a bagging outlet for waste ACM and water: f. A back-up generator shall be present on site: g. Waste bags shall consist of 6 mil thick plastic double-bagged before they are filled or plastic thicker than 6 mil. 2. Work practices: a. At least two persons shall perform the removal: b. The box shall be smoke-tested for leaks and any leaks sealed prior to each use. c. Loose or damaged ACM adjacent to the box shall be wrapped and sealed in two layers of 6 mil plastic prior to the job, or otherwise made intact prior to the job. d. A HEPA filtration system shall be used to maintain pressure barrier in box. (E) Water Spray Process System. A water spray process system may be used for removal of ACM and PACM from cold line piping if, employees carrying out such process have completed a 40-hour separate training course in its use, in addition to training required for employees performing Class I work. The https://www.dir.ca.gov/title8/1529.html 11/37 6/12/23, 10:36 AM California Code of Regulations, Title 8, Section 1529. Asbestos. system shall meet the following specifications and shall be performed by employees using the following work practices. 1. Specifications: a. Piping shall be surrounded on 3 sides by rigid framing, b. A 360 degree water spray, delivered through nozzles supplied by a high pressure separate water line, shall be formed around the piping. c. The spray shall collide to form a fine aerosol which provides a liquid barrier between workers and the ACM and PACM. 2. Work Practices: a. The system shall be run for at least 10 minutes before removal begins. b. All removal shall take place within the water barrier. c. The system shall be operated by at least three persons, one of whom shall not perform removal, but shall check equipment, and ensure proper operation of the system. d. After removal, the ACM and PACM shall be bagged while still inside the water barrier. (F) A small walk-in enclosure which accommodates no more than two persons (mini-enclosure) may be used if the disturbance or removal can be completely contained by the enclosure with the following specifications and work practices. 1. Specifications: a. The fabricated or job-made enclosure shall be constructed of 6 mil plastic or equivalent: b. The enclosure shall be placed under negative pressure by means of a HEPA filtered vacuum or similar ventilation unit: 2. Work practices: a. Before use, the mini-enclosure shall be inspected for leaks and smoke tested to detect breaches, and any breaches sealed. b. Before reuse, the interior shall be completely washed with amended water and HEPAvacuumed. c. During use, air movement shall be directed away from the employee's breathing zone within the mini-enclosure. (6) Alternative control methods for Class I work. Class I work may be performed using a control method which is not referenced in subsection (g)(5) of this section, or which modifies a control method referenced in subsection (g)(5) of this section, if the following provisions are complied with: (A) The control method shall enclose, contain or isolate the processes or source of airborne asbestos dust, or otherwise capture or redirect such dust before it enters the breathing zone of employees. (B) A certified industrial hygienist or licensed professional engineer who is also qualified as a project designer as defined in subsection (b) of this section, shall evaluate the work area, the projected work https://www.dir.ca.gov/title8/1529.html 12/37 6/12/23, 10:36 AM California Code of Regulations, Title 8, Section 1529. Asbestos. practices and the engineering controls and shall certify in writing that the planned control method is adequate to reduce direct and indirect employee exposure to below the PELs under worst-case conditions of use, and that the planned control method will prevent asbestos contamination outside the regulated area, as measured by clearance sampling which meets the requirements of EPA's Asbestos in Schools rule issued under AHERA, or perimeter monitoring which meets the criteria in subsection (g)(4)(B)2. of this section. 1. Where the TSI or surfacing material to be removed is 25 linear or 10 square feet or less, the evaluation required in subsection (g)(6) of this section may be performed by a "competent person", and may omit consideration of perimeter or clearance monitoring otherwise required. 2. The evaluation of employee exposure required in subsection (g)(6) of this section, shall include and be based on sampling and analytical data representing employee exposure during the use of such method under worst-case conditions and by employees whose training and experience are equivalent to employees who are to perform the current job. (7) Work Practices and Engineering Controls for Class II work. (A) All Class II work, shall be supervised by a competent person as defined in subsection (b) of this section. (B) For all indoor Class II jobs, where the employer has not produced a negative exposure assessment pursuant to subsection (f)(2)(C) of this section, or where during the job, changed conditions indicate there may be exposure above the PEL or where the employer does not remove the ACM in a substantially intact state, the employer shall use one of the following methods to ensure that airborne asbestos does not migrate from the regulated area; 1. Critical barriers shall be placed over all openings to the regulated area; or, 2. The employer shall use another barrier or isolation method which prevents the migration of airborne asbestos from the regulated area, as verified by perimeter area monitoring or clearance monitoring which meets the criteria set out in subsection (g)(4)(B)2. of this section. (C) Impermeable dropcloths shall be placed on surfaces beneath all removal activity; (D) All Class II asbestos work shall be performed using the work practices and requirements set out above in subsection (g)(1)(A) through (C) of this section. (8) Additional Controls for Class II work. Class II asbestos work shall also be performed by complying with the work practices and controls designated for each type of asbestos work to be performed, set out in this subsection. Where more than one control method may be used for a type of asbestos work, the employer may choose one or a combination of designated control methods. Class II work also may be performed using a method allowed for Class I work, except that glove bags and glove boxes are allowed if they fully enclose the Class II material to be removed. (A) For removing vinyl and asphalt flooring materials which contain ACM or for which, in buildings constructed no later than 1980, the employer has not verified the absence of ACM pursuant to subsection (g)(8)(A)9. of this section. The employer shall ensure that employees comply with the following work practices and that employees are trained in these practices pursuant to subsection (k)(9) of this section: 1. Flooring or its backing shall not be sanded. 2. Vacuums equipped with HEPA filter, disposable dust bag, and metal floor tool (no brush) shall be used to clean floors. 3. Resilient sheeting shall be removed by cutting with wetting of the snip point and wetting during delamination. Rip-up of resilient sheet floor material is prohibited. https://www.dir.ca.gov/title8/1529.html 13/37 6/12/23, 10:36 AM California Code of Regulations, Title 8, Section 1529. Asbestos. 4. All scraping of residual adhesive and/or backing shall be performed using wet methods. 5. Dry sweeping is prohibited. 6. Mechanical chipping is prohibited unless performed in a negative pressure enclosure which meets the requirements of subsection (g)(5)(A) of this section. 7. Tiles shall be removed intact, unless the employer demonstrates that intact removal is not possible. 8. When tiles are heated and can be removed intact, wetting may be omitted. 9. Resilient flooring material including associated mastic and backing shall be assumed to be asbestos-containing unless an industrial hygienist determines that it is asbestos-free using recognized analytical techniques. (B) For removing roofing material which contains ACM the employer shall ensure that the following work practices are followed: 1. Roofing material shall be removed in an intact state to the extent feasible. 2. Wet methods shall be used to remove roofing materials that are not intact, or that will be rendered not intact during removal, unless such wet methods are not feasible or will create safety hazards. 3. Cutting machines shall be continuously misted during use, unless a competent person determines that misting substantially decreases worker safety. 4. When removing built-up roofs with asbestos-containing roofing felts and an aggregate surface using a power roof cutter, all dust resulting from the cutting operation shall be collected by a HEPA dust collector, or shall be HEPA vacuumed by vacuuming along the cut line. When removing built-up roofs with asbestos containing roofing felts and a smooth surface using a power roof cutter, the dust resulting from the cutting operation shall be collected either by a HEPA dust collector or HEPA vacuuming along the cut line, or by gently sweeping and then carefully and completely wiping up the still-wet dust and debris left along the cut line. The dust and debris shall be immediately bagged or placed in covered containers. 5. Asbestos-containing material that has been removed from a roof shall not be dropped or thrown to the ground. Unless the material is carried or passed to the ground by hand, it shall he lowered to the ground via covered, dust-tight chute, crane or hoist: a. Any ACM that is not intact shall be lowered to the ground as soon as is practicable, but in any event no later than the end of the work shift. While the material remains on the roof it shall either be kept wet, placed in an impermeable waste bag, or wrapped in plastic sheeting. b. Intact ACM shall be lowered to the ground as soon as is practicable, but in any event no later than the end of the work shift. 6. Upon being lowered, unwrapped material shall be transferred to a closed receptacle in such manner so as to preclude the dispersion of dust. 7. Roof level heating and ventilation air intake sources shall be isolated or the ventilation system shall he shut down. https://www.dir.ca.gov/title8/1529.html 14/37 6/12/23, 10:36 AM California Code of Regulations, Title 8, Section 1529. Asbestos. 8. Notwithstanding any other provision of this section, removal or repair of sections of intact roofing less than 25 square feet in area does not require use of wet methods or HEPA vacuuming as long as manual methods which do not render the material nonintact are used to remove the material and no visible dust is created by the removal method used. In determining whether a job involves less than 25 square feet, the employer shall include all removal and repair work performed on the same roof on the same day. (C) When removing cementitious asbestos-containing siding and shingles or transite panels containing ACM on building exteriors (other than roofs, where subsection (g)(8)(B) of this section applies) the employer shall ensure that the following work practices are followed: 1. Cutting, abrading or breaking siding, shingles, or transite panels, shall be prohibited unless the employer can demonstrate that methods less likely to result in asbestos fiber release cannot be used. 2. Each panel or shingle shall be sprayed with amended water prior to removal. 3. Unwrapped or unbagged panels or shingles shall be immediately lowered to the ground via covered dust-tight chute, crane or hoist, or placed in an impervious waste bag or wrapped in plastic sheeting and lowered to the ground no later than the end of the work shift. 4. Nails shall be cut with flat, sharp instruments. (D) When removing gaskets containing ACM, the employer shall ensure that the following work practices are followed: 1. If a gasket is visibly deteriorated and unlikely to be removed intact, removal shall be undertaken within a glovebag as described in subsection (g)(5)(B) of this section. 2. The gasket shall be immediately placed in a disposal container. 3. Any scraping to remove residue must be performed wet. (E) When performing any other Class II removal of asbestos containing material for which specific controls have not been listed in subsections (g)(8)(A) through (D) of this section, the employer shall ensure that the following work practices are complied with. 1. The material shall be thoroughly wetted with amended water prior to and during its removal. 2. The material shall be removed in an intact state unless the employer demonstrates that intact removal is not possible. 3. Cutting, abrading or breaking the material shall be prohibited unless the employer can demonstrate that methods less likely to result in asbestos fiber release are not feasible. 4. Asbestos-containing material removed, shall be immediately bagged or wrapped, or kept wetted until transferred to a closed receptacle, no later than the end of the work shift. (F) Alternative Work Practices and Controls. Instead of the work practices and controls listed in subsection (g)(8)(A) through (E) of this section, the employer may use different or modified engineering and work practice controls if the following provisions are complied with. 1. The employer shall demonstrate by data representing employee exposure during the use of such method under conditions which closely resemble the conditions under which the method is https://www.dir.ca.gov/title8/1529.html 15/37