October 6, 2011

FACT SHEET

Proposed Revisions to the Federal Implementation Plans to Reduce Interstate
Transport of Fine Particulate Matter and Ozone

ACTION

EPA is proposing technical adjustments to the final Cross-State Air Pollution Rule (CSAPR).
CSAPR is a sound, achievable, market-based program that will deliver strong public health
protections. No changes are being proposed or contemplated to the core elements of the
program. The proposed revisions will not affect the significant air quality improvements slated
to occur under CSAPR, nor have a major impact on CSAPR's goal to reduce interstate transport
of pollution to help downwind states in their efforts to attain and maintain the National
Ambient Air Quality Standards (NAAQS). Instead, these revisions provide important technical
adjustments that will promote the development of allowance market liquidity and smooth the
transition from the Clean Air Interstate Rule (CAIR) programs to the CSAPR programs starting in
2012. The revisions reflect new information with technical merit that was brought to the EPA by
stakeholders from a small number of units after the final CSAPR was published.

The proposal revises some discrepancies affecting state budgets in Florida, Louisiana, Michigan,
Mississippi, Nebraska, New Jersey, New York, Texas, and Wisconsin and new unit set-asides in
Arkansas and Texas. This action revises unit-level allocations in Alabama, Indiana, Kansas,
Kentucky, Ohio and Tennessee to better account for utility consent decrees. The proposal also
amends the assurance penalty provisions for all states within the programs thus increasing the
opportunity for market-based compliance options until January 2014. Finally, the proposed rule
revises typographical errors in the final CSAPR.

The proposal will be open to public comment for 30 days from publication in the Federal
Register.

STATE BUDGETS AND NEW UNIT SET ASIDES

Florida - This action would revise assumptions in the CSAPR analysis used to determine
Florida's budget that did not reflect the unavailability of a nuclear unit. These revisions would
result in an increase to Florida's 2012 ozone-season NOx budget with corresponding revisions
to assurance levels and new unit set-asides.

Louisiana—This action would revise assumptions in the CSAPR analysis used to determine
Louisiana's budget that did not account for operational requirements at specific units. These
revisions would result in an increase to Louisiana's ozone season NOx budget with
corresponding revisions to assurance levels and new unit set-asides.

Michigan - This action would revise an assumption in the CSAPR analysis used to determine
Michigan's budget that included a selective catalytic reduction (SCR) control on a source in
Michigan that did not have an SCR. This revision would result in an increase to Michigan's
annual NOx budget with corresponding revisions to assurance levels and new unit set-asides.
This revised assumption would also affect the calculation of Michigan's potential ozone season

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NOx budget if that state is included in the CSAPR ozone season NOx program as proposed in the
Supplemental Notice of Proposed Rulemaking (76 FR 40662, July 11, 2011). EPA will address this
issue, along with other public comments submitted on that rule, when the Agency finalizes it
later this year.

Mississippi—This action would revise assumptions in the CSAPR analysis used to determine
Mississippi's budget that did not account for operational requirements at specific units. These
revisions would result in an increase to Mississippi's ozone season NOx budget with
corresponding revisions to assurance levels and new unit set-asides.

Nebraska - This action would revise an assumption in the CSAPR analysis used to determine
Nebraska's budget that included an SCR control on a source in Nebraska that did not have an
SCR. This revision would result in an increase to Nebraska's annual NOx budget with
corresponding revisions to assurance levels and new unit set-asides.

New Jersey - This action would revise assumptions in the CSAPR analyses used to determine
New Jersey's budgets that included SCR and scrubber controls on a source in New Jersey that
did not have either as well as an assumption that did not reflect operational requirements at
specific units. This revision would result in an increase to New Jersey's annual S02 budget,
annual NOx budget, and ozone season NOx budget with corresponding revisions to assurance
levels and new unit set-asides.

New York - This action would revise assumptions in the CSAPR analyses used to determine New
York's budget that did not account for operational requirements at specific units. These
revisions would result in an increase to New York's annual S02 budget, annual NOx budget, and
ozone season NOx budget with corresponding revisions to assurance levels and new unit set-
asides.

Texas - This action would revise two assumptions in the CSAPR analysis used to determine
Texas' S02 budget. First, three flue gas desulfurization (FGD, or scrubber) controls were
included on sources that did not have FGDs. Second, full flue gas treatment was assumed in
existing scrubbers at five facilities. These technical adjustments would result in an increase to
Texas' S02 budget with corresponding revisions to assurance levels and new unit set-asides. In
addition, this action would revise assumptions that did not reflect operational requirements at
specific units. This revision would result in an additional increase to Texas' ozone season NOx
and annual NOx budgets with corresponding revisions to assurance levels and new unit set-
asides.

Wisconsin - This action revises an assumption in the CSAPR analyses used to determine
Wisconsin's S02 budget that included a scrubber control in 2014 on a source in Wisconsin that
is not expected to have a scrubber online by 2014. This revision would result in an increase to
Wisconsin's S02 budget with corresponding revisions to assurance levels and new unit set-
asides. In addition, this action would revise an assumption that included an SCR control on a
source in Wisconsin that did not have an SCR and result in an increase to Wisconsin's annual

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NOx budget with corresponding revisions to assurance levels and new unit set-asides. This
revised assumption would also affect the calculation of Wisconsin's potential ozone season NOx
budget if that state is included in the CSAPR ozone season NOx program as proposed in the
Supplemental Notice of Proposed Rulemaking (76 FR 40662, July 11, 2011). EPA will address this
issue, along with other public comments submitted on that rule, when the Agency finalizes it
later this year.

Finally, this action would recalculate the new unit set asides for Texas and Arkansas to include
two planned facilities, assuring those new facilities of proper new unit allocations.

ASSURANCE PENALTY PROVISIONS

Under the final CSAPR, assurance provisions were included to provide sources within each state
with limited, but necessary, flexibility so that they can continue to comply with this rule in years
in which more fossil fuel generation occurs than projected in the average base case year.

This proposed rule amends the assurance penalty provisions for all states within the programs
so they start in 2014, instead of 2012, to promote the development of allowance market
liquidity as these revisions are finalized, thereby smoothing the transition from the CAIR
programs to the CSAPR programs in 2012.

CONSENT DECREES

EPA is proposing to revise certain unit-level allocations in six states - Alabama, Indiana, Kansas,
Kentucky, Ohio and Tennessee - affected by federally enforceable consent decrees to prevent
CSAPR allocations from exceeding the terms of these judicial actions. This action does not add
to any state budgets but ensures that these allowances can be fully available for statewide
compliance with CSAPR.

FUTURE REVISIONS

EPA is seeking all relevant information that may support similar revisions by the comment
deadline on this rulemaking, so that the Agency may consider whether a subsequent and timely
rulemaking process should address any further revisions to the final CSAPR state budgets.

BACKGROUND

The CSAPR replaces CAIR starting January 1, 2012. Sources covered by the CSAPR annual S02
and NOx programs must comply - that is, surrender allowances to cover their 2012 annual
emissions - in March 2013. Sources covered by the NOx ozone season program must comply
on November 30, 2012 by surrendering allowances sufficient to cover their ozone season NOx
emissions. EPA issued CAIR on May 12, 2005 and the CAIR federal implementation plans (FIPs)
on April 26, 2006. In 2008, the US Court of Appeals for the DC Circuit remanded CAIR to the
Agency, leaving existing CAIR programs in place while directing EPA to replace them as rapidly
as possible with a new rule consistent with the Clean Air Act.

The CSAPR was proposed July 6, 2010. EPA held three public hearings on the proposed rule
during the 60-day comment period. EPA also issued three notices of data availability (NODAs)

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to provide additional opportunities for public comment on data, modeling, and other key
aspects of the rule. The Agency received hundreds of detailed comments from states,
environmental and public health groups, industry, and other stakeholders during the comment
periods for the proposed rule and NODAs. The final CSAPR was finalized on July 6, 2011.

HOW TO COMMENT

EPA will accept comment on the proposal for 30 days after publication in the Federal Register,
unless a public hearing is requested in which event comments must be received within 45 days.
Comments, identified by Docket ID No. EPA-HQ-OAR-2009-0491, may be submitted by one of
the following methods:

•	www.regulations.gov: follow the on-line instructions for submitting comments.

•	E-mail: Comments may be sent by electronic mail (e-mail) to a-and-r-Docket@epa.gov.

•	Fax: Fax your comments to: 202-566-1741.

•	Mail: Send your comments to: Air and Radiation Docket and Information Center,
Environmental Protection Agency, Mail Code: 6102T, 1200 Pennsylvania Ave., NW,
Washington, DC, 20460.

•	Hand Delivery or Courier: Deliver your comments to: EPA Docket Center, 1301,
Constitution Ave., NW, Room 3334, Washington, D.C. Such deliveries are only accepted
during the Docket's normal hours of operation, and special arrangements should be
made for deliveries of boxed information.

•	Public Hearing. If requested, a public hearing will be held on October 28, 2011. The
time, location and details of the hearing will be announced separately. Written
statements (duplicate copies preferred) should be submitted to Docket ID No. EPA-HQ-
OAR-2009-0491.

FOR MORE INFORMATION

To download a copy of the proposed rule, go to www.epa.gov/crossstaterule.

For more information contact: Gabrielle Stevens, U.S. Environmental Protection Agency, Clean
Air Markets Division, MC 6204J, Ariel Rios Building, 1200 Pennsylvania Ave., NW, Washington,
D.C. 20460, telephone (202) 343-9252, e-mail at stevens.gabrielle@epa.gov.

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