40 CFR § 52.834
Control strategy: Sulfur dioxide
June 9, 2020
Approval—On April 21, 1997, the Iowa Department of Natural Resources (IDNR) submitted a maintenance plan and redesignation request for the Muscatine County nonattainment area. The maintenance plan and redesignation request satisfy all applicable requirements of the Clean Air Act.
[63 FR 13345, Mar. 19, 1998]