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Regional Haze Update

WESTAR

September 17-19, 2007

EPA Office of Air Quality Planning & Standards

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State Implementation Plans (SIPs)

• Due December 17th, 2007– Interim progress reports due every 5 years– Full SIP revisions due every 10 years

• SIP preparation revolves around:– the 1999 Regional Haze Rule– the 2005 BART Guidelines– the Reasonable Progress Guidance (issued June, 2007)

• Most States SIPs will be submitted under §51.308, but 4 States (Arizona, New Mexico, Utah, and Wyoming) will use §51.309 for addressing SO2 their SIPs

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SIPs – What’s Required?

• Reasonable Progress Goals (RPGs)– 2 goals – one for the 20% worst visibility days and one for the

20% best visibility days– RPGs projected initially for 2018 and revised every 10 years– SIP requires an analysis of 4 statutory factors:

• Cost of compliance• Time necessary for compliance• Energy and non-air quality impacts• Remaining useful life of source

– Consideration given to point, area, and mobile sources– 4 factors used in combination with the uniform rate of progress

(glidepath) to determine which sources are reasonable to control

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SIPs – What’s Required (cont.)?

• Best Available Retrofit Technology (BART)– BART eligibility review:

• Major Point Sources in one of 26 categories • In the 1962 – 1977 timeframe • PTE ≥ 250 TPY of any one visibility impairing pollutant

– Subject to BART generally if modeled visibility impact exceeds a threshold (no higher than 0.5 dv)

– BART control limits determined by consideration of 5 factors:• Cost of compliance, energy and non-air quality impacts, existing

pollution control technology, remaining useful life of source, degree of visibility improvement resulting from the use of BART

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SIPs – What’s Required (cont.)?

• Long Term Strategies– Must include enforceable limits, compliance

schedules and other measures necessary to achieve reasonable progress goals

– Requires consultation among States• Monitoring, and other implementation

requirements– Requires submission of emission inventories;

monitoring requirements satisfied through participation in IMPROVE network

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SIPs – Status

• NC, MO, and PA draft SIPs have been submitted to EPA and the FLMs

• Roughly 30 States expected to submit on time

• We know several States will be late – States should work with their regional office to

get SIPs in as soon as possible.

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Issues

• Late/Incomplete SIPs

• Commitments in SIPs

• Consistent Review of SIPs