OSHA's silica standard for construction (29 C.F.R. § 1926.1153(a)) applies to all occupational exposures to respirable crystalline silica in construction work, except where employee exposures will remain below the AL of 25 μg/m3, calculated as an 8-hour TWA, under any foreseeable conditions. 29 C.F.R. § 1926.1153(a). The exception applies only where exposures below 25 μg/m3 as an 8-hour TWA are expected or achieved without using engineering or other controls. The exception is intended to ensure that the standard does not apply to employees whose work results in only minimal silica exposures. See 81 Fed. Reg. at 16706.
Developed by OSHA in cooperation with industry and labor organizations, the FAQs provide employers and workers with guidance on the standard’s requirements. In addition, a series of six new videos instruct users on methods for controlling exposure to silica dust when performing common construction tasks, or using construction equipment. The videos cover topics including handheld power saws, jackhammers, drills, and grinders.
Visit OSHA’s silica standard for construction page for more information and resources on complying with the standard.