My firm drills a series of 1/2-inch diameter holes in sheet rock to dry it out where rooms have been flooded. Is drilling these holes a prohibited practice?
No. The requirement for HEPA exhaust control does not apply to the use of all power tools. Specifically, HEPA exhaust control is not required when using a power drill to drill holes in sheetrock. When using a power drill with a drill bit to cut through sheetrock, the speed associated…