Minn. R. Part 7011.0510
No owner or operator of existing indirect heating equipment shall cause to be discharged into the atmosphere from said equipment any gases that contain filterable particulate matter or sulfur dioxide in excess of the standards of performance shown in part 7011.0545.
No owner or operator of existing indirect heating equipment shall cause to be discharged into the atmosphere from said equipment any gases which exhibit greater than 20 percent opacity, except for one six-minute period per hour of not more than 60 percent opacity. An exceedance of this opacity standard occurs whenever any one-hour period contains two or more six-minute periods during which the average opacity exceeds 20 percent or whenever any one-hour period contains one or more six-minute periods during which the average opacity exceeds 60 percent.
For the purposes of this part and part 7011.0545, "existing indirect heating equipment" means indirect heating equipment on which construction, modification, or reconstruction did not commence after January 31, 1977.
Minn. R. Part 7011.0510
Statutory Authority: MS s 116.07