Apr 23, 2018· OK028.22 Sierra Club and Center for Biological Diversity comments on EPA-R06-OAR-2017-0145-0001· EPA-R06-OAR-2017-0145-0022
The Sierra Club and Center for Biological Diversity respectfully submit the attached comments on EPAs March 22, 2018 proposal to approve revisions to the Oklahoma State Implementation Plan (SIP) (83 Fed. Reg. 12,514 (March 22, 2018)).