Catalog Search Results
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
1999.
Description
The primary goals of this study are to: Develop comprehensive inventories of Prevention of Significant Deterioration (PSD) increment consuming emissions for nitrogen oxides (NOx) in southwest Colorado; Develop meteorological fields as necessary for input to the Industrial Source Complex (ISC3) and CALPUFF models; Setup and run the ISC3 and CALPUFF models for appropriate near-field and far-field receptors, respectively; Compare modeled concentration...
Pub. Date
2007.
Description
This guidance document is intended to provide direction to contractors, consultants and property owners and operators who are involved in soil disturbing activities in areas with known or suspected asbestos-contaminated soil, or where asbestos-contaminated soil is discovered. The guidance is meant to assist in compliance with the Solid Waste Regulations, and where applicable, Air Quality Control Commission Regulation No. 8, Part B (5 CCR 1001-10,...
Author
Series
Atmospheric science paper volume no. 367
Pub. Date
1983.
Description
A series of studies was conducted at several arctic locations to determine the relationship between cloud condensation nuclei (CCN) and ice nuclei (IN) and the pollutant aerosol.
Author
Pub. Date
2007.
Description
Roadside vegetation is exposed to a variety of biotic and abiotic stresses that can impact plant health. Drought, pollution, disease, insects, lack of nutrients, and roadbed management practices may potentially act alone or synergistically to adversely affect plants in proximity to the roadside. To date, little published research documents the impacts of certain deicers on vegetation in relationship to other potential stresses. This study provides...
Pub. Date
2004-
Description
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...
Pub. Date
[2012]
Description
Solid waste landfills release air pollutants that are regulated by the Air Pollution Control Division. As the waste in a landfill decomposes, it breaks down to form landfill gases (LFGs), such as Methane (CH4 ), Carbon Dioxide (CO2), and non-methane organic compounds (NMOC). Landfills also can produce smog causing volatile organic compounds (VOCs), and air toxics, pollutants known or suspected of causing cancer and other serious health effects. Particulate...
Author
Pub. Date
2010.
Description
This report addresses the impact on a regional scale of particulate emissions from the Energy Fuels Resources Corporation (Energy Fuels) proposed Piñon Ridge Mill located in Montrose County, Colorado. The regional dust analysis was completed in response to questions posed by the Colorado Department of Public Health and Environment (CDPHE) regarding the possible contribution from the operations of the proposed Piñon Ridge Mill to particulate matter...
Author
Pub. Date
2009.
Description
There is an overarching concern about the long term trade offs between air quality protection and efforts to mitigate unwanted wildfire. The emissions from wildfire may exceed air quality standards to such a degree that it may be prudent to allow greater levels of burning now to prevent unmitigated wildfires in the future. Prescribed fire implementation needs to regard to issues, such as health risk, public safety, and ecosystem damage if prescribed...
Pub. Date
2010.
Description
The importance of atmospheric nitrogen (N) deposition relative to the natural processes and natural character of Rocky Mountain National Park (RMNP) has become better understood over time, as scientific research and monitoring that began in the early 1980's have documented various changes to ecosystems in the park. These changes include forest and soil biogeochemical changes, enhanced microbial activity in soils, increased N in lakes and streams,...
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