So if your workplace actvity generates more than 25 ug/m3 over an 8-hour TWA, you MUST follow the new OSHA regulations.
This includes (but is not limited to) activities such as
- Concrete grinding and polishing with walk-behind or handheld grinders
- Joint cuttng with handheld or walk-behind saws
- Tuck pointng
- Shot blasting
- Concrete drilling
Bottom Line: All concrete operators who grind, cut, or polish concrete, sand, mortar, block, terrazzo, and natural stone must follow the new regulations or risk incurring heavy fines.