California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 7 - General Industry Safety Orders › Group 16 - Control of Hazardous Substances › Article 110 - Regulated Carcinogens › Section 5208.1 - Non Asbestiform Tremolite, Anthophyllite, and Actinolite

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
This section applies to occupational exposures to
						  non-asbestiform tremolite, anthophyllite, and actinolite.
(a) The 8-hour time weighted average
						concentration of airborne non-asbestiform tremolite, anthophyllite, and
						actinolite fibers to which any employee may be exposed shall not exceed 2
						fibers, longer than 5 micrometers, per cubic centimeter of air as determined by
						the membrane filter method using phase contrast illumination and 400 to 450X
						magnification. The ceiling or short time concentration to which employees are
						exposed shall not exceed 10 fibers, longer than 5 micrometers, per cubic
						centimeter of air.
(b) Engineering
						Controls. Controls such as, but not limited to, isolation, enclosure, exhaust
						ventilation, and dust collection shall be used to meet the exposure limits in
						5208.1(a). All hand-operated and power-operated tools which may produce or
						release non-asbestiform tremolite, anthophyllite, and actinolite fibers in
						excess of such limit shall be provided with local exhaust ventilation systems.
						The American National Standards Institute Z9.2-1971 Standard Governing the
						Design and Operations of Local Exhaust Systems shall be used to design,
						construct, install, and maintain exhaust ventilation and dust collection
						systems in accordance with section
						5143.
(c) Work Practices.
(1) Non-asbestiform tremolite, anthophyllite,
						and actinolite shall be mixed, handled, applied, removed, cut, or otherwise
						worked wet insofar as practicable.
(2) Non-asbestiform tremolite, anthophyllite,
						and actinolite spills shall be cleaned up promptly.
(3) Non-asbestiform tremolite, anthophyllite,
						and actinolite-containing cement, mortar, coating, grout, plastic, or similar
						material shall not be removed from bags, cartons, or other containers without
						being wetted, unless it is enclosed and/or ventilated to effectively control
						airborne fibers as specified in section
						5208.1(a).
(4) The spraying of any substance containing
						any amount of non-asbestiform tremolite, anthophyllite, and actinolite in or
						upon a building or other structure during its construction, alteration, or
						repair is prohibited.
EXCEPTIONS:
(A) Exterior and interior coatings and
						laminating resins containing encapsulated non-asbestiform tremolite,
						anthophyllite, and actinolite fibers bound within finished product from
						manufacture through application.
(B) Cold process asphalt roof
						coatings.
(C) Substances containing
						less than one-quarter of 1 percent non-asbestiform tremolite, anthophyllite,
						and actinolite solely as a result of naturally occurring impurities in the
						substance or its components.
(5) Non-asbestiform tremolite, anthophyllite,
						and actinolite waste, scrap, debris, bags, containers, equipment or other
						non-asbestiform tremolite, anthophyllite, and actinolite-contaminated material
						consigned for disposal which may produce in any reasonably foreseeable use,
						handling, storage, processing, disposal, or transportation employee exposure to
						airborne non-asbestiform tremolite, anthophyllite, and actinolite fibers in
						excess of the limits prescribed by section
						5208.1(a) shall be
						collected and disposed of in sealed impermeable bags or other closed
						impermeable containers which shall be labeled in accordance with section
						5208.1(i).