Catalog Search Results
170) Technical support document for the May 24, 2010, stratospheric ozone intrusion exceptional event
Pub. Date
2011.
Description
The Colorado Department of Public Health and Environment, Air Pollution Control Division, has prepared this report for the United States Environmental Protection Agency (EPA) to demonstrate that the elevated ozone concentrations along Colorado's Front Range and the exceedance of the 8-hour National Ambient Air Quality Standard (NAAQS) for ozone at Manitou Springs on May 24, 2010, was caused by a natural event, specifically a stratospheric intrusion...
Pub. Date
2006.
Description
This report discusses results for ambient air toxics monitoring conducted at three locations in Denver during the year May 2002 through April 2003. The air monitoring project discussed in this report did not include monitoring for semi-volatile organic compounds. Thus, potential health effects for inhalation of pesticides or diesel emissions cannot be assessed. These compounds have not been monitored in recent years, except at some specific hazardous...
Pub. Date
[2012]
Description
Surface mining operations in Colorado, including sand and gravel pits, borrow pits, and quarries, as well as concrete batching operations and hot mix asphalt plants, release air pollutants that are regulated by the Air Pollution Control Division (Division) at the Colorado Department of Public Health and Environment. This document provides an overview of the air pollution reporting and permitting requirements that apply to these operations.
Pub. Date
[2010]
Description
On April 28, 2009 the Environmental Protection Agency (EPA) amended the requirements for stack testing and opacity observations for the Nonmetallic Mineral Processing Industry. These requirements, known by this industry as OOO standards, will affect facilities that commenced construction modification, or reconstruction after April 22, 2008. This guide is organized in two parts: Part I -Who is Subject to Subpart OOO? and Part II - What are the Old...
Pub. Date
2004.
Description
On Thursday October 30, 2003, Delta, Crested Butte, Mount Crested Butte, and Grand Junction recorded exceedances of the twenty-four-hour PM10 standard with readings of 215 ug/m3 at Delta, 177 ug/m3 at Crested Butte, 165 ug/m3 at Mount Crested Butte, and 234 ug/m3 at Grand Junction. The exceedances were caused by a combination of dense smoke transported from the massive wildfires in Southern California and blowing dust from the desert Southwest and...
Pub. Date
2004.
Description
On Thursday October 30, 2003, Delta, Crested Butte, Mount Crested Butte, and Grand Junction recorded exceedances of the twenty-four-hour PM10 standard with readings of 215 ug/m3 at Delta, 177 ug/m3 at Crested Butte, 165 ug/m3 at Mount Crested Butte, and 234 ug/m3 at Grand Junction. The exceedances were caused by a combination of dense smoke transported from the massive wildfires in Southern California and blowing dust from the desert Southwest and...
Pub. Date
2003.
Description
Over the past eight years, the monitors located at the Municipal Power Plant and Municipal Building in Lamar, Colorado experienced exceedances of the 24-hour National Ambient Air Quality Standard (NAAQS) for PM10 (particulate matter having a nominal aerodynamic diameter equal to or less than 10 microns). Each of these exceedances was associated with unusually high winds and blowing dust in the Lamar area.
Author
Pub. Date
[1972]
Description
Air pollution is a matter of concern everywhere, but at high altitudes it may have more significance because of the difficulty that some people have breathing rarefied air. Much of the construction in Western states is above the 6,000 foot level, and highways have been constructed above the 14,000 foot level. The results of tests for carbon monoxide, hydrocarbons, nitrogen oxides and particulates at construction sites in Colorado are presented in...
.png)