Silica Regulations: Why Silica Can Impact Health, What PPE Your Workers Need and How to Stay Compliant

Silica regulations affect businesses that cut, grind, drill or crush materials such as concrete, stone, brick, block or engineered stone. Crystalline silica is a common mineral in these materials. It is harmless in a solid countertop or foundation, but everyday tasks can break it into respirable dust fine enough to settle deep in the lungs. Long-term exposure is linked to silicosis (incurable), as well as lung cancer, chronic obstructive pulmonary disease (COPD) and kidney disease. That is why OSHA’s respirable crystalline silica standard sets a permissible exposure limit (PEL) of 50 micrograms per cubic meter of air, averaged over an 8-hour shift, and an action level of 25 micrograms that triggers exposure assessment. For employers, the business case for silica safety is direct: meeting the standard protects your workforce, avoids citations and keeps projects moving without costly stoppages.

Compliance starts with choosing an efficient path. Construction employers can follow OSHA’s Table 1, which matches common tasks with specific dust controls and, if needed, respirator requirements. Employers who follow Table 1 do not have to separately measure exposure levels. Those who don’t use Table 1 must assess exposure through air monitoring or objective data. Either way, silica regulations require a written exposure control plan, a designated competent person to implement it, worker training, recordkeeping and medical surveillance for employees required to wear a respirator 30 or more days per year. Personal protective equipment is the last line of defense, after engineering controls such as water spray and vacuum dust collection. Appropriate respirators must be used under a written respiratory protection program with proper fit testing. Practical silica safety measures also include safety glasses or goggles, gloves, and disposable coveralls or work clothes that stay on site, so workers do not carry dust home. Selecting the right controls up front often reduces how much PPE, monitoring and medical surveillance a job requires.

Converse Consultants has provided environmental and occupational health and safety services for decades, and our team of industrial hygienists, scientists and engineers offers silica testing and monitoring. We help employers determine whether their tasks fall under Table 1 or require exposure assessment, conduct air monitoring, develop written exposure control plans and identify cost-effective controls that satisfy silica regulations. As an employee-owned firm since 1946, we focus on practical solutions that keep you compliant and productive. With offices across California and Nevada, Converse Consultants is ready to support your silica safety program. Call or email us at 626.930.1200 or converse@converseconsultants.com to discuss your project.

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