References
- U.S. Environmental Protection Agency. Regional Haze Regulations: Final Rule. 40 CFR Part 51; Fed. Regist. 1999, 64, 35, 714–35,774.
- U.S. Environmental Protection Agency. Tracking Progress Under the Regional Haze Rule. EPA-454/B-03–004. September 2003.
- U.S. Environmental Protection Agency. Guidance for Estimating Natural Visibility Conditions Under the Regional Haze Program. EPA-454/B-03– 005. September 2003.
- Molenar, J.V. Analysis of the real world performance of the Optec NGN-2 ambient nephelometer. Proceedings of Visual Air Quality, Aerosols, and Global Radiation Balance, A&WMA, Pittsburgh, PA, 1997; pp. 243-265.
- U.S. Environmental Protection Agency. Compilation of Air Pollutant Emission Factors, AP-42. Vol. 1: Stationary Point and Area Sources. Section 13.2.2, unpaved roads. 2001.
- U.S. Environmental Protection Agency. Effects of the 1990 CAA Amendments on Visibility in Class I Areas: An EPA Report to Congress, October 1993 (EPA–452/R–93–014). 1993.
- VIEWS (2005). Regional Planning Organization Site Map: http://www. epa.gov/air/visibility/regional.html (accessed May 16, 2005).