GENERAL39079

• Permit No: M1977211
• IBM Index Class Name: General Documents
• Doc Date: 6/25/2001
• From: US DEPT OF AGRICULTURE
• Media Type: D
• Archive: No

Pikeview Quarry Environmental Assessment Page 31
' from roads. Also, following summer storms, runoff from heated roads causes rapid
increases in stream temperatures.

3.2.5 Air Quality
' Air quality management in the Pike National Forest is accomplished through
compliance with the Clean Air Act amendment of 1977 (P.L. 95-95), Colorado's 1974
Fugitive Dust Laws (CRS 1973, 25-7-]08), the Colorado Air Quality Control Act of 1979,
' and the Wilderness Act of 1964.
The Forest Service's role in air quality management is to coordinate National Forest
' activities with State and Federal air quality control efforts. This is accomplished through
proper management of Forest Service activities such as prescribed fire, construction and use
of roads, and the operation of various facilities to insure compliance with air quality
' regulations and standards. In addition, the Forest Service is responsible for efforts to protect
National Forest System land from adverse impacts created by external sources of air
pollution, such as industrial plants and automobiles. This effort involves coordination of
' planning and permitting activities with the Environmental Protection Agency and the
Colorado Department of Public Health and Environment, Air Quality Control Division.
' The U.S. Environmental Protection Agency (EPA) and the Colorado Department of
Health, Air Quality Control Division have established air quality standards to protect public
health and the environment. For purposes of this proposed project, the pollutants of concern
1 would be carbon monoxide and fine particulate matter (PMZ 5) from fuel combustion in
motor vehicles (trucks), and mining equipment (screening operations) and respirable
particulate matter (PMIO) or fugitive dust from construction activities and wind erosion from
disturbed areas. The National Ambient Air Quality Standards (NAAQS) adopted by EPA
and the Colorado Air Quality Control Commission are shown below (Table 3.3).

1
1
Table 3.3. National Ambieut Air Quality Standards
Pollutant Averaging Time Concentration
Carbon Monoxide l hour' 35 ppm (40 mg/m')
8 hour' 9 ppm (10 mg/m')
Fine Particulate Matter Annual arithmetic mean 15 µg/mt
(PMt s) •' 24 hour' 65 µg/m3
Respirable Particulate Matter Annual arithmetic mean 50 µg/m'
(PM,°) 24 hour' 150 µg/m'
• Concentration not to be exceeded more than one time per year in averaging time.
•• The PM 2.5 standard is included for information only. A 1999 federal court ruling blocked implementation of this
standard, which EPA proposed in 1997. (http:/hvww.epa.gov/ttn/oarpg/naagsfinn
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