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Air Quality Program

Infrastructure, Rule, and Program SIPs

Infrastructure SIPs

When EPA establishes a new National Ambient Air Quality Standard (NAAQS) or revises an existing NAAQS, the federal Clean Air Act requires Washington to develop an infrastructure State Implementation Plan (SIP). The infrastructure SIP demonstrates that Washington has the necessary legal authority, regulatory structure, and sufficient resources to implement the NAAQS statewide.

Infrastructure SIP Title Status

Infrastructure SIP for the 2010 Nitrogen Dioxide, 2008 Ozone, and 1997, 2006, and 2012 Fine Particulate Matter National Ambient Air Quality Standards

Submitted to EPA in September 2014

Infrastructure SIP Certification for the 2008 Lead National Ambient Air Quality Standards

EPA partially approved SIP on 7/27/14

Infrastructure SIP Certification for the 1997 8-Hour Ozone National Ambient Air Quality Standards

EPA partially approved SIP on 5/24/12

Interstate Transport SIP State Implementation Plan for 1997 8-Hour Ozone and PM2.5 National Ambient Air Quality Standards

EPA approved SIP on 8/27/07


Rule SIPS

Washington usually submits rules (Washington Administrative Codes or WACs) along with a SIP as enforceable means to carry out the control strategy in any type of SIP. Sometimes, rules are even submitted as standalone SIP revisions. When EPA approves a rule as part of Washington’s SIP, the rule becomes “federally-enforceable.” That is, if Washington does not implement the rule, EPA or citizens can step in and enforce the rule at the federal level.

Rule SIP Title Status

Including revised chapter 173-400 WAC, General Air Quality Regulations, in the Washington SIP

Ecology submitted this SIP revision to EPA in 1/14

  1. EPA proposed to partially approve Ecology’s general air quality rules on 7/10/14
  2. EPA proposed to approve Ecology’s nonattainment new source review rules on 7/25/14
  3. EPA expects to act on the Prevention of Significant Deterioration program, the final portion of the SIP submittal, in a separate action

Including revised chapter 173-433 WAC, Solid Fuel Burning Devices, in the Washington SIP

EPA approved this SIP revision on 4/9/14

Including new chapter 173-476 WAC, Ambient Air Quality Standards, in the Washington SIP

EPA approved this SIP revision on 3/4/14


Program SIPs

Some SIPs satisfy programs or parts of programs required by the Clean Air Act.  The subjects addressed by these SIPs can be quite diverse. One example is the Motor Vehicle Inspection and Maintenance Program, more commonly known as the Emission Check Program. This program is required for carbon monoxide and ozone nonattainment areas. Other examples include the Washington State Visibility Protection Program and the 1998 Smoke Management Program.

Program SIP Title Status

2010 Regional Haze SIP and 2011 Regional Haze SIP Updates

On 12/6/12 EPA approved the Best Available Retrofit Technology (BART) determination for the TransAlta Centralia Generation LLC Coal-fired power plant in Centralia, WA.

On 6/11/14, EPA partially approved and partially disapproved the 2010 Regional Haze Plan. EPA developed a Federal Implementation Plan (FIP) for the elements they did not approve.

In addition, EPA also approved an alternate to BART for five BART emission units at the Tesoro Refining and Marketing refinery in Anacortes. An emission unit is an individual piece of equipment that emits air pollutants at a stationary source, such as steam generators, combustion turbines, or printing presses.

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