The Clean Air Act Advisory Committee’s Tailoring Rule Permit Streamlining Workgroup announced April 25 that it will complete its recommendations to streamline the greenhouse gas permitting program by September 15. The full committee will finalize its recommendations to the Environmental Protection Agency in October. The committee convened the work group to consider revisions to the agency’s greenhouse gas permitting program in response to the agency’s March 8 proposed third step of its tailoring rule, which requires new sources that emit 100,000 MT CO2e annually and existing sources that make modifications that increase their emissions by 75,000 Mt per year to obtain the permits.