What is being done about haze?

Several existing programs under the Clean Air Act, such as State
Implementation Plan (SIP) Limits, the Title IV Acid Deposition regulations,
and the NOx SIPCall and currently regulating haze-forming pollutants and
their precursors.  In 1999, EPA issued the Regional Haze Rule (RHR),
intended to further reduce haze and protect visibility in "federal Class I
areas," which are certain types of national and international parks and
wilderness areas.  Since the regulation was proposed, over 40 states
have requested major changes in the rule, as have diverse groups
including industrial, business and environmental advocates.

Regional Haze Timelines:

Full Text of the RHR:

Map of Class I areas:

Under the RHR, states must develop specifications for BART sources that
meet EPA requirements.  BART rules will establish the types of emissions
reductions that must be achieved by existing sources.  

The BART requirement will greatly impact the use of coal in the nation as a
whole.  BART regulations for coal-fired utilities are expected to require a
reduction of 90 to 95% in sulfur dioxide emissions.  While this level is
achievable, it is extremely expensive and may force the shutting down of
may coal-fired plants.  It is highly unlikely that the replacement generation
will be coal-fired.

What is Haze?

Where does haze-forming pollution come from?

What can you do?

What is a Regional Planning Organization (RPO)?