Back to the resource library Re: Proposed revisions to Regulation No. 6, Pt. A., Standards of Performance for New Stationary Sources October 3, 2012 | Share: Download See All Related Resources Comments on Colorado’s Air Toxics Rules Comments to Colorado’s Energy and Carbon Management Commission on Produced Water Comments on the Midstream Rulemaking by Colorado Air Quality Control Commission On Inefficient Enclosed Combustion Devices (ECDs) in Colorado Related Content Colorado