Recently, the Occupational Safety and Health Administration (OSHA) issued a final rule to aimed at curbing lung cancer, silicosis, chronic obstructive pulmonary disease and kidney disease in workers by limiting their exposure to respirable crystalline silica.

About 2.3 million workers are exposed to respirable crystalline silica in their workplaces, including 2 million construction workers who drill, cut, crush, or grind silica-containing materials such as concrete and stone, and 300,000 workers in general industry operations such as brick manufacturing, foundries, and hydraulic fracturing, also known as fracking. Responsible employers have been protecting workers from harmful exposure to respirable crystalline silica for years, using widely-available equipment that controls dust with water or a vacuum system.

Key Provisions

• Reduces the permissible exposure limit (PEL) for respirable crystalline silica to 50 micrograms per cubic meter of air, averaged over an 8-hour shift.
• Requires employers to: use engineering controls (such as water or ventilation) to limit worker exposure to the PEL; provide respirators when engineering controls cannot adequately limit exposure; limit worker access to high exposure areas; develop a written exposure control plan, offer medical exams to highly exposed workers, and train workers on silica risks and how to limit exposures.
• Provides medical exams to monitor highly exposed workers and gives them information about their lung health.
• Provides flexibility to help employers — especially small businesses — protect workers from silica exposure.

Compliance Schedule

Both standards contained in the final rule take effect on June 23, 2016., after which industries have one to five years to comply with most requirements, based on the following schedule:

Construction - June 23, 2017, one year after the effective date.

General Industry and Maritime - June 23, 2018, two years after the effective date.

For full details, visit www.osha.gov/silica/. ALCC is monitoring this rule and will share, in the coming weeks, information for landscape companies who may be affected by it.

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