ARSD 74:36:18:10. Visible emission limit for construction and continuous operation activities

The owner or operator of a state facility or a state contractor may not discharge into the ambient air from a fugitive source an air pollutant of a density equal to or greater than that designated as twenty percent opacity, as determined by the EPA's Method 9 in 40 C.F.R. Part 60, Appendix A-4 (July 1, 2024) for a series of two minute averages with a minimum of a total of six minutes of readings. The Environmental Protection Agency's Method 9 in 40 C.F.R. Part 60, Appendix A (July 1, 2024) must be used to determine the opacity.