|
A State Implementation Plan (SIP) is the federally approved and
enforceable plan by which each state identifies how it will attain
and/or maintain the health-related primary and welfare-related secondary
National Ambient Air Quality Standards (NAAQS) described in Section
109 of the Clean Air Act (CAA) and 40 Code of Federal Regulations
50.4 through 50.12. It may be helpful to view a SIP as a state's
blueprint for clean air. The process of developing a SIP starts
when the state develops a draft SIP that contains control measures
and strategies, proposes it in a public process, formally adopts
it, and submits it to EPA by the Governor's designee. EPA must take
formal rulemaking action to approve or disapprove a SIP, and once
approved by EPA a SIP is included in the Code of Federal Regulations
(Title 40, Part 52) and becomes federally enforceable. From time
to time a state may choose to revise its SIP or EPA may require
a state to revise its SIP. EPA is required to take rulemaking action
on SIP revisions as well as SIPs.
The primary and secondary NAAQS that EPA established to protect
public health and welfare, also known as criteria pollutants, include
the following pollutants:·
- carbon monoxide
- lead
- nitrogen dioxide
- ozone
- particulate (PM 10)
- particulate (PM 2.5)
- sulfur dioxide
SIP documents contain a wide variety of information including
air quality goals, measurements of air quality, emission inventories,
modeling demonstrations, control strategies, evidence of public
participation, and more. While EPA is working toward making SIP
documents fully accessible electronically, our initial effort is
focused on ensuring EPA-approved SIP regulations are available for
each state, commonwealth or territory. Fully electronically accessible
SIPs will become a reality for future SIP actions as EPA fully automates
the rulemaking process through EDocket
in the coming months. In the meantime, EPA will continue to present
currently approved state regulations and add information to the
site periodically.
Where You Live
Select the state or region of concern.
Region
1 - Connecticut, Maine, Massachusetts, New Hampshire, Rhode
Island, and Vermont
Region 2 -
New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
Region
3 - Delaware, Maryland, Pennsylvania, Virginia, West Virginia,
and the District of Columbia
Region 4
- Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina,
South Carolina, and Tennessee
Region
5 - Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin
Region
6 - Arkansas, Louisiana, New Mexico, Oklahoma, and Texas
Region
7 - Iowa, Kansas, Missouri, and Nebraska
Region 8
- Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming
Region 9
- Arizona, California, Hawaii, Nevada, and Pacific Islands and
Tribal Nations subject to US law
Region
10 - Alaska, Idaho, Oregon, and Washington
|
|
