I am under going demolition work in pre-1978 building. I have paint chip samples sent away to determine ppm of lead. At what levels are contractors required to wear hazmat suits and respirators? ...
Taking into consideration the building supplies that were available in that time period for that particular geographic area (say, a major metropolitan city in the mid-western United States), do homes ...
I've got an old house with some asbestos tape on the heating vents, and some old floor tiles which are asbestos suspects as well; duct cleaning firms won't do cleaning on the vents with the tape ...