On February 23, 2014, Colorado's Air Quality Control Commission ("Commission") fully adopted EPA's Standards of Performance for Crude Oil and Natural Gas Production, Transmission, and Distribution found in 40 C.F.R. Part 60, Subpart OOOO ("NSPS OOOO") into Regulation Number 6, Part A; adopted corresponding revisions to its emissions reporting and permitting framework in Regulation Number 3, Parts A, B, and C; and adopted complementary oil and gas...

Public participation and hearing guidance guidebook has been prepared to provide members of the public and other interested parties information on the hearing process known as adjudication.

This public participation and hearing guidance guidebook has been prepared to provide members of the public and other interested parties a guide on the rulemaking process.

This plan contains the final version of the implementation process for the evaluation study of prescribed fire required by CRS 25-7-111(5) - HB09-1199, Section 4.

These reports discusses results for ambient air toxics monitoring conducted by the Colorado Department of Public Health and Environment (CDPHE) at the long-term trends site at Grand Junction, Colorado. This site was established as part of the "rural" area component of the EPA National Air Toxics Trends Study. Since that time, the EPA has reconsidered, and decided that the site is more indicative of urban concentrations, and has changed the designation...