Catalog Search Results
Author
Description
The Division has prepared a table listing indoor air remediation goals and action levels for a number of volatile organic compounds to be used at sites where vapor intrusion may be a concern. This was prompted in response to the U.S. Environmental Protection Agency (EPA) having released a new assessment of the health effects of trichloroethene (TCE) and tetrachloroethene (PCE), two commonly used degreasing solvents.
Pub. Date
2016.
Description
Ground-level ozone (the primary constituent of smog) is the most complex, difficult to control, and pervasive of the six principal air pollutants. Unlike other pollutants, ozone is not usually emitted directly into the air, but at ground-level is formed via photochemical reactions among NOx and volatile organic compounds (VOCs) in the presence of sunlight. Scientific evidence indicates that ground-level ozone not only affects people with impaired...
Pub. Date
2020.
Description
On December 19, 2019, Colorado's Air Quality Control Commission (Commission) strengthened existing oil and gas control measures in Regulation Number 7 to further minimize emissions from oil and gas operations across the state. The Commission also revised Air Pollutant Emission Notice (APEN) and permitting requirements in Regulation Number 3.
Pub. Date
2014.
Description
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...
Pub. Date
2012.
Description
Once the immediate danger of a wildfire has passed, people have questions about indoor air quality in unburned homes in or near the fire zone. A major concern is the potential for toxins and other contaminants in the soot and ash that may be deposited in homes from nearby burned structures, and the health and safety of families reoccupying these homes.
Author
Pub. Date
2021.
Description
Report on the independent investigation of allegations made by three CDPHE employees regarding non-enforcement of National Ambient Air Quality Standards. This report primarily focuses on allegations regarding the modeling analysis conducted for a specific permit application for the Cripple Creek & Victor Gold Mine (CC&V), including claims of falsified data, suppression of information, and a conflict of interest.
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