1. BACKGROUND
    2. PROCEDURAL HISTORY
    3. Rulemaking Proposal
    4. Hearings
      1. Pre-First-Notice Public Comments
    5. SUMMARY OF PRE-FIRST-NOTICE PUBLIC COMMENTS
      1. Public Comment 2: Kincaid and Dominion
      2. Public Comment 3: Zion
    6. Public Comment 4: Ameren
    7. Public Comment 5: IEPA
      1. Public Comment 7: ELPC, American Lung Association of Metropolitan Chicago, Environment Illinois, and Sierra Club
      2. Public Comment 8: Midwest Generation
    8. Public Comment 11: IEPA and Midwest Generation
    9. BOARD FIRST-NOTICE DISCUSSION
      1. Size of the Clean Air Set-Aside (CASA)
    10. Over-Fired Air (OFA)
    11. Pro rata Allocation of Allowances from the CASA
    12. Fluidized Bed Combustion (FBC) Boilers
    13. Two-Year “Look-Back”
    14. Heat Input vs. Gross Electrical Output
    15. Air Quality Modeling
    16. Fuel-Weighting
    17. Proposed Subpart F: Combined Pollutant Standards (CPS)
      1. Technical Feasibility and Economic Reasonableness
        1. SO2
    18. SUMMARY OF FIRST-NOTICE PUBLIC COMMENTS
    19. Public Comment 14: Midwest Generation
    20. Public Comment 15: IEPA
    21. Public Comment 16: Zion
    22. PC 17: Kincaid and Dominion
    23. BOARD SECOND-NOTICE DISCUSSION
    24. Contested Issues Analysis
    25. Determination of Allocations for SIPC for 2009 - 2011
    26. Allocations Based on Gross Electrical Output vs. Heat Input
      1. Correcting for “Air In-Leakage”
      2. Fuel-Weighting Factors
    27. Clean Air Set-Aside (CASA)
      1. Compliance Supplement Pool (CSP)
    28. Rule Language Changes from First to Second Notice
    29. CONCLUSION
    30. ORDER
    31. TITLE 35: ENVIRONMENTAL PROTECTION
    32. SUBTITLE B: AIR POLLUTION
      1. CHAPTER I: POLLUTION CONTROL BOARD
      2. SUBCHAPTER c: EMISSION STANDARDS AND LIMITATIONS FOR STATIONARY SOURCES
        1. PART 225
          1. Section
    33. Section 225.425 Annual Trading Budget
      1. Section 225.465 Clean Air Set-Aside (CASA) Allowances
    34. Section 225.525 Ozone Season Trading Budget
      1. Section 225.550 Monitoring, Recordkeeping and Reporting Requirements for Gross Electrical Output and Useful Thermal Energy
        1. Phase I Phase II

ILLINOIS POLLUTION CONTROL BOARD
August 23, 2007
IN THE MATTER OF:
PROPOSED NEW CLEAN AIR
INTERSTATE RULES (CAIR) SO
2
, NO
x
ANNUAL AND NO
x
OZONE SEASON
TRADING PROGRAMS, 35 ILL. ADM.
CODE 225, SUBPARTS A, C, D, E, and F
)
)
)
)
)
)
)
R06-26
(Rulemaking – Air)
Adopted Rule. Final Order.
OPINION AND ORDER OF THE BOARD (by T.E. Johnson):
Today the Board adopts the Clean Air Interstate Rule (CAIR) as a final rule. On April
19, 2007, the Board adopted its first-notice proposal, which was published in the
Illinois Register
on May 11, 2007.
See
31 Ill. Reg. 6769 (May 11, 2007). The 45-day first-notice public
comment period ended on June 25, 2007. On July 26, 2007, the Board adopted its second-notice
proposal for review by the Joint Committee on Administrative Rules (JCAR). On August 14,
2007, JCAR issued a certification of no objection concerning the rule. With this final adoption,
the Board makes only minor changes to the second-notice rule amendments at the suggestion of
JCAR. The Board will not discuss those changes. The Board will now file the adopted
amendments with the Secretary of State for publication in the
Illinois Register
as a final rule.
The rule will become effective on August 31, 2007.
This rulemaking was initiated by the Illinois Environmental Protection Agency (IEPA) in
part because the State of Illinois must meet federal Clean Air Act (42 U.S.C. §§ 7401
et seq
.)
requirements for controlling fine particulate matter (PM
2.5
) and ozone in the greater Chicago and
Metro East/St. Louis nonattainment areas. The United States Environmental Protection Agency
(USEPA) has determined that most eastern states, including Illinois, will not be able to timely
meet the National Ambient Air Quality Standards (NAAQS) largely because individual states
cannot effectively address the interstate transport of airborne pollution from upwind areas. To
address this regional problem, USEPA promulgated federal CAIR. Under federal CAIR, states
like Illinois are given the option of complying with emission budgets set by USEPA or, as
adopted here for nitrogen oxides (NO
x
) and sulfur dioxide (SO
2
) emissions from fossil fuel-fired
electric generating units, using federal “cap and trade” programs.
Specifically, by adopting the CAIR SO
2
trading program, the CAIR NO
x
annual trading
program, and the CAIR NO
x
ozone season trading program, with specific allocations for NO
x
and retirement ratios for SO
2
, this rulemaking is designed to reduce the intra- and interstate
transport of SO
2
and NO
x
emissions from fossil fuel-fired electric generating units. The Board
adopts four new subparts (C, D, E, F), a new appendix, and revisions to existing Subpart A of
Part 225 of the Board’s regulations for controlling emissions from large combustion sources (35
Ill. Adm. Code 225).

 
2
In today’s opinion, the Board first provides background and procedural history on this
rulemaking. Next, the Board discusses the pre-first notice public comments filed in this
proceeding and describes how the Board ruled on the contested issues at first notice. The Board
then summarizes the public comments received during the first-notice public comment period.
Those summaries are followed by a description of the Board’s second-notice analysis and
disposition of those issues that remained in dispute after the Board’s first-notice decision. The
adopted rules themselves are set forth in the order following this opinion.
BACKGROUND
IEPA stated that the CAIR rule is intended to satisfy Illinois’ obligations under USEPA’s
“Rule to Reduce Interstate Transport of Fine Particulate Matter and Ozone; Revisions to Acid
Rain Program; Revisions to the NO
x
SIP Call”
1
(federal CAIR), 70 Fed. Reg. 25162 (May 12,
2005). Stat. at 1.
2
According to IEPA, the rule is also designed to address, in part, IEPA’s
obligation to meet certain federal Clean Air Act (CAA) requirements, including:
Adopting control strategies necessary to demonstrate attainment of the fine particulate
matter (PM
2.5
) and 8-hour ozone NAAQS in the greater Chicago and Metro East/St.
Louis nonattainment areas;
Adopting an implementation plan addressing visibility; and
Adopting an implementation plan addressing the interstate transport of air pollution.
Id
.
at 2.
In the federal CAIR, USEPA stated that it “has assessed the role of transported emissions
from upwind States in contributing to unhealthy levels of PM
2.5
and 8-hour ozone in downwind
States.” Rule to Reduce Interstate Transport of Fine Particulate Matter and Ozone, 69 Fed. Reg.
4566 (Jan. 30, 2004). USEPA proposed the federal CAIR emission reductions for SO
2
and NO
x
that apply to upwind states based on that assessment.
Id
. USEPA gave three primary reasons for
addressing interstate pollution transport in a timely manner. First, USEPA stated that emissions
from upwind states can, either alone or combined with local emissions, cause NAAQS
exceedences and jeopardize public health in downwind communities.
Id
. Second, according to
USEPA, the interstate transport of pollution must be addressed on a regional scale because the
significant contributions of pollution from upwind states force downwind areas to incur extra
cleanup costs to achieve greater local emissions reductions.
Id
. Third, a regional approach to
controls should result in achieving air quality standards more economically.
Id
.
The federal CAIR requires 28 eastern states that were identified as significantly
contributing or interfering with the maintenance of one or more NAAQS in downwind areas to
revise their SIPs to include control measures on SO
2
and NO
x
. The federal CAIR also requires
1
“SIP” is the short form of state implementation plan.
2
IEPA’s “Statement of Reasons” included in the rulemaking proposal is cited as “Stat. at _.”

3
that 25 states must reduce: (1) annual SO
2
and NO
x
emissions for the purposes of the PM
2.5
NAAQS; and (2) seasonal NO
x
emissions for purposes of the 8-hour ozone NAAQS.
In the federal CAIR, USEPA found that Illinois significantly contributes both PM
2.5
and
ozone, and is impacted by pollution from other states. USEPA gave Illinois the option of
complying with emission budgets set by USEPA or adopting a federal “cap and trade” program
covering its electric generating units (EGUs). IEPA, in its proposal, chose the latter option, and
the Board adopted that approach at first and second notice and adopts it today as a final rule.
The CAA established a comprehensive program for controlling and improving the
nation’s air quality through both state and federal regulation. Stat. at 4. Under Sections 108 and
109 of the CAA, USEPA is charged with identifying air pollutants that endanger the public
health and welfare, and with formulating the NAAQS that specify the maximum permissible
concentrations of those pollutants in the ambient air. 42 U.S.C. §§ 7408-7409. USEPA has
promulgated NAAQS for various pollutants, including 8-hour ozone and PM
2.5
. 40 C.F.R. § 50.
Pursuant to Section 107(a) of the CAA, states are given primary responsibility for ensuring that
the ambient air quality meets the NAAQS for the identified pollutants. 42 U.S.C. § 7407(a).
Part D, Subpart I of the CAA requires adoption of control strategies necessary to
demonstrate attainment of the fine particulate matter (PM
2.5
) and 8-hour ozone NAAQS in the
greater Chicago moderate nonattainment area and the Metro East/St. Louis moderate
nonattainment area. Part D, Subpart 2 of the CAA requires adoption of control strategies
necessary to demonstrate attainment of the 8-hour ozone NAAQS for those two nonattainment
areas. Section 169(A) of the CAA requires the adoption of an implementation plan addressing
visibility. Section 110(a)(2)(D) of the CAA requires adoption of a SIP addressing the interstate
transport of air pollution. Stat. at 2.
USEPA believes that notwithstanding the CAA requirements for achieving the NAAQS
as described above, the majority of eastern states will not be able to meet the 8-hour ozone and
PM
2.5
NAAQS by the statutory deadlines for attainment.
See
69 Fed. Reg
.
4566, 4579 (Jan. 30,
2004). USEPA believes that a major reason for this failure is that states are not able to address
the interstate transport of pollution from upwind areas. Interstate transport is the process by
which air pollutants move from upwind areas to downwind areas. Stat. at 8.
The emission source category that USEPA determined to be most cost-effective to
control is EGUs, although states have the flexibility to choose the measures to adopt to achieve
the specified emissions reductions. Under federal CAIR, USEPA is requiring that states found to
be contributing to PM
2.5
transport be subject to an annual NO
x
limitation and SO
2
limitation
under CAIR and that states found to be contributing to ozone transport be subject to an ozone
season limitation. Because Illinois is a significant contributor for both PM
2.5
and ozone, USEPA
has established three emissions budgets for Illinois: the first would cap emissions of NO
x
on an
annual basis; the second would cap emissions of NO
x
during the ozone season; and the third
would cap the emissions of SO
2
on an annual basis. These caps are based on emission reductions
from EGUs. The required emissions reductions will be implemented in two phases. Phase I for
NO
x
reductions will start in 2009 (covering 2009-2014). Phase I for SO
2
reductions will start in
2010 (covering 2010-2014). Phase II for both NO
x
and SO
2
reductions will start in 2015

4
(covering 2015 and thereafter).
In lieu of complying with USEPA’s emissions budgets, states have the option of adopting
the federal “cap and trade” programs covering its EGUs:
CAIR NO
x
annual trading program;
CAIR NO
x
ozone season trading program; and
CAIR SO
2
trading program. 40 C.F.R. §§ 51.123(o)(1) and (aa) and 40 C.F.R. §
51.124(o)(1), respectively.
For the CAIR NO
x
trading programs, a state is given a pool of allowances equal to its NO
x
budgets to distribute as it chooses. For the CAIR SO
2
trading program, USEPA allocates the
allowances to affected EGUs based on the allocations that the unit receives under the federal
Acid Rain program. The trading programs do not require EGUs to install specific control
technology or meet a particular emission limit. Instead, each affected unit is required at the end
of each control period to hold allowances sufficient to cover the tons of NO
x
and SO
2
emitted.
These allowances can be obtained either through a direct allocation from a state (NO
x
allowances) or USEPA (SO
2
allowances) or through trading. It is anticipated that affected units
that can install the least costly controls will do so, and will “over control,” and thereby have
extra allowances to sell to other EGUs that cannot as cost-effectively reduce emissions.
This rule, which amends Subpart A and adds new Subparts C, D, E, and F of Part 225,
adopts the CAIR SO
2
, CAIR NO
x
annual, and CAIR NO
x
ozone season trading programs to
reduce the intrastate and interstate transport of SO
2
and NO
x
emissions. Stat. at 1. The rule is
intended to cover the entire State of Illinois and is expected to affect existing and new EGUs.
Id
.
at 24. Approximately 229 existing EGUs will be subject to the CAIR NO
x
annual, CAIR SO
2
,
and CAIR NO
x
ozone season trading programs.
Id
. at 24-25. For the CAIR NO
x
annual, and
SO
2
trading programs, existing units are those that commenced operation before January 1, 2006;
and for the CAIR NO
x
ozone season trading program, existing units are those that commenced
operation before May 1, 2006.
Id
. at 25. Of these units, 170 are gas and oil-fired boilers, 59 are
coal-fired boilers, and the remainder are gas and oil-fired combustion turbines.
Id
. Some coal-
fired boilers have the capability to burn natural gas, fuel oil, or both. Of the 59 coal-fired boilers,
34 are tangentially-fired, five are wall-fired, 18 are cyclone-fired boilers, and one is a circulating
fluidized bed boiler.
Id
.
The rule is expected to affect existing EGUs, and any new EGUs that serve a generator
greater than 25 megawatts, or any unit with a maximum design heat input that is greater than 250
thousand British thermal units per hour (mmBtu/hr) and that has the potential to use more than
50% of the “potential electrical output capacity” and that sell electricity to the grid. Stat. at 25.
While gas-fired turbines typically have low emissions of SO
2
, they still must comply with the
requirements of the CAIR SO
2
trading program.
Id
. In Illinois, emissions from oil and gas
boilers and turbines are approximately 2,000 tons per year (TPY) of SO
2
as compared to 361,000
TPY of SO
2
from coal-fired boilers.
Id
.

 
5
PROCEDURAL HISTORY
Rulemaking Proposal
IEPA filed its rulemaking proposal on May 30, 2006. On June 15, 2006, the Board
accepted the proposal for hearing. As required by Section 27(b) of the Environmental Protection
Act (Act) (415 ILCS 5/27(b) (2006)), the Board requested that the Department of Commerce and
Economic Opportunity (DCEO) conduct an economic impact study (EcIS) on this rulemaking.
The Board’s EcIS request, dated June 28, 2006, was placed in this rulemaking’s docket. DCEO
did not respond to the Board’s request. The Board has received no testimony or comment
regarding the DCEO’s lack of response.
On July 20, 2006, based on a federal deadline discussed below, the Board granted IEPA’s
motion for expedited review in part. To maximize opportunities for public participation,
however, the Board denied IEPA’s motion in part by declining to proceed immediately to first
notice without commenting on the merits of the IEPA proposal.
Hearings
The Board held five days of hearings. The first hearing began on October 10, 2006, and
continued through October 12, 2006, in Springfield. The second hearing began on November 28,
2006, and continued through November 29, 2006, in Chicago.
3
Over the course of the two hearings, Rachel Doctors and John Kim participated on behalf
of IEPA. Kathleen Bassi, Stephen Bonebrake, and Shelden Zabel participated on behalf of
Dynegy Midwest Generation (Dynegy) and Southern Illinois Power Cooperative (SIPC). David
Rieser participated on behalf of Ameren Energy Generating Company, Ameren Energy
Resources Generating Company, and Electric Energy, Inc. (collectively, Ameren). Steven J.
Murawski participated on behalf of Zion Energy, LLP (Zion). Faith E. Bugel participated on
behalf of the Environmental Law and Policy Center (ELPC). Bruce E. Nilles participated on
behalf of the Sierra Club. James Russell participated on behalf of the Christian County
Generation, LLC. Bill Forcade participated on behalf of Kincaid Generation, LLC (Kincaid).
Finally, Keith Harley participated on behalf of Environment Illinois.
At the first hearing, the hearing officer entered into the record and accepted as hearing
exhibits the pre-filed testimony of the following witnesses submitted on behalf of IEPA: Gary E.
Beckstead (Ag. Exh. 6), David E. Bloomberg (Ag. Exh. 10), Roston Cooper (Ag. Exh. 12), Rory
Davis (Ag. Exh. 9), Robert Kaleel (Ag. Exh. 4), Yoginder Mahajan (Ag. Exh. 7), James R. Ross
(Ag. Exh. 2), and Jacquelyn Sims (Ag. Exh. 8). A total of 20 exhibits were offered and accepted
at the first hearing.
At the second hearing, the hearing officer entered into the record and accepted as hearing
exhibits the pre-filed testimony of the following witnesses: Jason M. Goodwin on behalf of Zion
3
Hearing transcripts are cited as “Tr. at [page] ([hearing date]).”

 
6
(Zion Exh. 1), Gregory Kunkel on behalf of Christian County Generation (Christian County Exh.
1), C.J. Saladino on behalf of Kincaid (Kincaid Exh. 1), Steven C. Whitworth on behalf of
Ameren (Ameren Exh. 1), and Charles Kubert on behalf of ELPC (Kubert Exh. 1). Robert B.
Asplund testified on behalf of Kincaid. A total of seven exhibits were offered and accepted at
the second hearing.
Motions to Dismiss and Amend
On November 30, 2006, Dynegy, Midwest Generation, LLC (Midwest Generation), and
SIPC moved to dismiss the rulemaking proposal. On January 5, 2007, SIPC and Midwest
Generation withdrew as parties to the motion to dismiss.
On March 13, 2007, IEPA and Dynegy filed a joint motion to amend Section
225.465(b)(4)(B) of the proposed rule to address Dynegy’s concerns regarding the
manner in which the Clean Air Set-Aside (CASA) provisions “penalized sources with
consent decrees relative to their baghouse projects.” Joint Motion at 1, 3. Dynegy also
requested that the Board stay action on the motion to dismiss. The Board received two
other motions to amend the rule: motions to amend were submitted by IEPA on
November 27, 2006, and by Midwest Generation and IEPA jointly on February 16, 2007.
In its April 19, 2007 first-notice opinion and order, the Board granted the three motions
to amend and incorporated the requested amendments. The Board also granted Dynegy’s request
to stay ruling on Dynegy’s motion to dismiss, based on Dynegy’s representation that it would
withdraw the motion if the rule changes proposed jointly by Dynegy and IEPA were accepted at
first notice. In its July 26, 2007 second-notice opinion, the Board, noting that Dynegy had not
filed the promised withdrawal, on its own motion struck Dynegy’s motion to dismiss. On
August 21, 2007, Dynegy filed a letter explaining why it did not withdraw its motion to dismiss.
According to Dynegy, the company was waiting to withdraw the motion because the rule
language jointly proposed by Dynegy and IEPA, as adopted at first notice by the Board,
contained a typographical error considered significant by Dynegy. Dynegy Letter at 1-2. The
typographical error, identified as such by IEPA (PC 15 at 27), was corrected by the Board at
second notice.
Pre-First-Notice Public Comments
Sixteen public comments were filed before first notice. IEPA filed post-hearing
comments to the first set of hearings on October 27, 2006 (PC 1). On December 15, 2006,
Kincaid filed a Dominion NO
x
Compliance Strategy and the resumé of Andy Yaros (PC 2). On
December 21, 2006, the Board received the post-hearing comments to the second set of hearings
from of Jason M. Goodwin for Zion (PC 3). On January 5, 2007, post-hearing comments were
received from Ameren (PC 4); IEPA (PC 5); Dynegy and SIPC (PC 6); ELPC, the American
Lung Association of Metropolitan Chicago, Environment Illinois, and the Sierra Club (PC 7);
Midwest Generation (PC 8); Midwest Generation and IEPA (PC 9); and Kincaid (PC 10). On
January 10, 2007, IEPA filed a motion for leave to file
instanter
a revised joint comment
(granted April 19, 2007), attaching the revised joint comment (PC 11) of IEPA and Midwest

 
7
Generation. Finally, on February 5, 2007, the Sierra Club submitted 85 clean air questionnaires
from Harold Washington College (PC 12).
First Notice
The Board adopted its first-notice opinion and order on April 19, 2007. First notice was
published in the
Illinois Register
on May 11, 2007 (31 Ill. Reg. 6769 (May 11, 2007)), which
began the 45-day first-notice public comment period, ending on June 25, 2007.
First-Notice Public Comments
The Board received five first-notice public comments: PC 13 from SIPC; PC 14 from
Midwest Generation; PC 15 from IEPA; PC 16 from Zion; and PC 17 from Kincaid and
Dominion.
Second Notice
The Board issued its second-notice opinion and order on July 26, 2007. The second-
notice period began the next day, on July 27, 2007, with the Board’s submittal of the written
notice to JCAR. The CAIR rule was considered by JCAR at its meeting on August 14, 2007. On
that same date JCAR issued a certification on no objection regarding the rule.
Motion for Additional Hearing
After the second-notice period had begun, Midwest Generation, on July 30, 2007, filed a
motion for an additional hearing. The Board denied the motion by order of August 9, 2007.
SUMMARY OF PRE-FIRST-NOTICE PUBLIC COMMENTS
Public Comment 2: Kincaid and Dominion
Kincaid and Dominion asserted that the most economical means to NO
x
compliance is to
install high capital cost selective catalytic reduction (SCR) equipment on their largest units with
the highest NO
x
rates. PC 2 at 1. Dominion has put SCRs on 12 of its largest coal units.
Id
.
With SCRs removing 90% or more on their large units, Dominion is able to put less costly
controls on smaller units that do not remove nearly as high a percentage of NO
x
.
Id.
Public Comment 3: Zion
Zion preferred a fuel-neutral allocation mechanism, but was willing to consider a
compromise alternative fuel-weighting factor that closes the gap between the fuel-neutral option
and IEPA’s proposal. Zion suggested a compromise factor of 0.7 for both gas-fired and oil-fired
units. PC 3 at 2. A revised oil-fired factor that is consistent with the proposed gas-fired factor is
necessary to streamline the process for determining the quantity of allowance allocations,
according to Zion.
Id.
Zion added that a compromise factor also provides additional
consideration for reliability (through enhanced allocation treatment) for units operating in gas-

 
8
curtailed situations when: (a) natural gas is unavailable; (b) power demand is potentially very
high; or (c) reliability of the electric power supply is critical.
Id.
Zion proposed a CASA set-aside in the 5-10% range, rather than 25%, because setting
aside such a large portion of the allowance pool unjustifiably increases the compliance burden on
facilities that already face significant emission reduction obligations through an artificial
reduction in allowances available for allocations. PC 3 at 4. Zion also suggested that CASA
applicants be restricted to electric-generating sources and that non-generating sources be
eliminated from consideration in the proposed rule.
Id.
Public Comment 4: Ameren
Ameren requested that the Board allow the use of CASA allowances to support advanced
over-fired air (OFA) NO
x
reduction strategies. PC 4 at 1. Ameren proposed language designed
to create a narrow and limited eligibility for OFA projects. PC 4 at 5. Ameren stated that such
projects can only be eligible if they achieve 30% reductions. Alternatively, projects must be
installed as part of a phased NO
x
control program which includes an advanced computerized
combustion control system or a NO
x
control reduction strategy already identified as eligible
under Sections 225.460(c) and 225.560(c).
Id
.
Public Comment 5: IEPA
IEPA maintained that fuel-weighting as proposed is appropriate. PC 5 at 4. IEPA
rejected a proposal on behalf of Christian County Generation to eliminate
pro rata
reduction of
CASA allocations for early adopters. IEPA maintained its support for the 25% CASA as
proposed.
Id
. at 7. IEPA disagreed with allowing OFA projects to receive allowances from the
CASA.
Id
. at 10.
IEPA agreed to allow the only remaining fluidized bed combustion (FBC) boiler in
Illinois to receive CASA allowances. The single existing FBC boiler is the SIPC 123 boiler in
Marion, Williamson County. IEPA, however, opposed allowing any future FBC boilers to
receive CASA allowances. PC 5 at 11.
IEPA agreed to revise the allocation method proposed in Sections 225.465(b)(5)(B) and
225.565(b)(5)(B) relating to allocating CASA allowances to clean coal technology projects. PC
5 at 17. The new subsections include a factor change from 1.0 to 1.4.
Id
. The factor change
would compensate for SIPC’s direct measurements and provide the same level of incentive IEPA
was attempting to achieve.
Id.
IEPA proposed several additional changes to the rule language suggested by USEPA. PC
5 at 21. IEPA contended that the three most significant suggested amendments were: (1)
deleting Subsection (d)(5)(C) in Sections 225.445 and 225.545 that required IEPA to reduce a
unit’s allocation from the new unit set-aside (NUSA) if it had been allocated excess allowances
for the prior control period; (2) deleting the definition for “CAIR Trading programs” because it
was not used in the proposal; and (3) clarifying the language concerning fractional allowances to

9
indicate that IEPA can only allocate whole allowances and allowances that cannot be distributed
on that basis would be retained and distributed
pro rata
for the next control period.
Id
.
Public Comment 6: Dynegy and SIPC
Dynegy and SIPC stated they have consistently expressed their position that a set-aside of
25% for the CASA is not justifiable and would merely displace the location of the emissions. PC
6 at 3. Dynegy and SIPC stated that IEPA has not identified projects that justify the size of the
set-aside, and fear that a significant, and perhaps inequitable, portion of the CASA allowances
could go to Ameren.
Dynegy and SIPC also disputed IEPA’s economic analysis of the CASA as highly cost-
effective. Further, stated the companies, USEPA does not suggest anywhere in the preamble to
CAIR that there should be an additional set-aside for early adopters, clean coal technology, and
so forth. PC 6 at 12. The companies took issue with the structure of the CASA and stated that
providing carve-out “incentives” for those who reduce early and subsidizing the costs of more
expensive pollution control equipment is inconsistent, and skews how CASA allowances are
allocated.
Id
. at 18. The companies argued that the CASA does not treat all EGUs equally and
offers examples as to how CASA subsidizes the construction of pollution control equipment by
some companies at the expense of others. The companies also opposed Ameren’s proposal to
add “advanced” OFA to the CASA.
The companies contended that the Governor’s energy plans are no bases to justify the
size of the energy efficiency and renewable energy (EE/RE) portion of the CASA and that IEPA
does not bear the responsibility for developing CAIR to accommodate the Governor’s energy
plan. PC 6 at 13.
The companies opposed IEPAs proposal that allowance allocations be based upon gross
electrical output rather than heat input. PC 6 at 24. The companies stated that the efficiency
assumed in IEPA’s heat input to gross electrical output formula is not representative of actual
efficiencies at the plants and disadvantages the vast majority of the regulated entities. Dynegy
and SIPC stated that industry wants an appropriate conversion formula to be applied.
Id
. at 25.
With respect to encouraging efficiency, the companies noted that high efficiency does not equate
to lower emissions and greater environmental benefit. The companies used SIPC’s circulating
fluidized bed (CFB) as an example.
Id
. at 25-26.
The companies supported IEPA’s proposal regarding weights assigned to fuel types and
opposed Zion’s request that the Board remove the fuel-weighting or, alternatively, assign a factor
of 1.0 for coal and 0.6 for all other fuels. PC 6 at 27.
Finally, Dynegy and SIPC had concerns about the two-year “look-back.” The companies
opposed IEPA’s approach to annual allowance allocations, and supported use of USEPA’s
approach of using a permanent baseline. PC 6 at 28-29. The companies favored updating
allocation methodology to take the average of the three highest years’ heat input during a five-
year “look-back” period (currently in place in Illinois under 35 Ill. Adm. Code 217, Subpart W).
Id
. at 31.

 
10
Public Comment 7: ELPC, American Lung Association of Metropolitan Chicago,
Environment Illinois, and Sierra Club
ELPC, by itself and on behalf of American Lung Association of Metropolitan Chicago,
Environment Illinois, and the Sierra Club urged the Board to amend IEPA’s proposed CAIR rule
in three principle ways. PC 7 at 1. First, the renewable energy and energy efficiency set-asides
should be increased from 12% to 15%, with an annual increase of 1% to a maximum of 20%, to
better meet the rule’s own renewable energy goals.
Id.
Second, the CASA proposed for FBC
boilers should be eliminated because FBC boilers are not a clean coal technology.
Id.
Third, the
fuel-weighting factors should be eliminated, because they discourage the use of cleaner fuels in
energy production.
Id.
According to these environmental groups, a fuel-neutral allocation
system that does not differentiate between coal and non-coal units is even-handed, treating all
units the same and allowing the trading program to do a more effective job of determining the
most cost-effective compliance combination.
Id
. at 10.
Public Comment 8: Midwest Generation
Midwest Generation supported a three-year averaging and five-year “look-back” period
to determine an EGU’s allowances, rather than the two-year period that IEPA proposed. PC 8 at
1. According to the company, this approach would help to make level the allowances for EGUs
in Illinois and avoid a skewed distribution of allowances or penalties associated with unexpected
or extended outages.
Id.
Midwest Generation was concerned that the two-year “look-back”
would encompass periods when the EGUs experience outages of various lengths of time and
EGUs would consequently receive a “short” allocation.
Id.
Finally, Midwest Generation
requested that the Board consider heat input as the basis for allocations, which is how Midwest
Generation has reported and certified for years.
Id
. at 5.
Public Comment 10: Kincaid
Kincaid did not support the 25% CASA. Kincaid stated that IEPA provided no
justification that the level of the proposed set-aside is necessary from an air quality perspective.
Kincaid further contended that these provisions would significantly increase compliance costs
for Illinois sources and competitively disadvantage the State relative to surrounding states.
According to Kincaid, this approach also could jeopardize USEPA approval of the Illinois CAIR
SIP, and even Illinois sources’ participation in the federal trading program. Kincaid asserts this
may also deny Illinois the economic advantages of the USEPA trading program that many other
surrounding states will realize through adoption of the USEPA rule.
Kincaid also did not support the withholding of allowances from the Compliance
Supplement Pool (CSP). According to the company, the early reduction incentives that Illinois
included in its rules implementing the “NO
x
SIP Call” not only provide companies added
compliance flexibility, easing the burden once the requirements take effect, but also benefit the
environment by providing emission reductions sooner. PC 10 at 2-3.

 
11
Kincaid supported the five-year baseline at Part 225, Subparts D and E, Sections
225.435(a) and 225.535(a) for the initial annual and ozone season allocation of NO
x
allowances
for the years 2009, 2010, and 2011. For the year 2012 and beyond, Kincaid urged IEPA to use a
five-year baseline, with an average of the three highest years, throughout the annual and seasonal
NO
x
trading rules, with periodic revisions every five or six years. Kincaid asserted that a longer
baseline period would ensure that allocations would be fairly distributed among affected
facilities, taking into account market swings, prolonged maintenance breaks, and lengthy outages
to install the extensive control equipment needed to comply with these rules, as well as the
recently finalized mercury rules at Part 225, Subpart B. PC 10 at 10.
Public Comment 11: IEPA and Midwest Generation
IEPA and Midwest Generation entered into a memorandum of understanding (MOU)
under which the parties agreed to a timeline for Midwest Generation to achieve “deep and
sustained” reductions in emissions of mercury, SO
2,
and NO
x
from Midwest Generation’s coal-
fired Illinois EGUs. PC 11 at 2. IEPA and Midwest Generation asked the Board to include a
new Subpart F entitled “Combined Pollutant Standards,” 35 Ill. Adm. Code Section 225.600 –
225.640, along with a new Appendix A to Part 225, in the proposed CAIR rulemaking that
reflects the parties’ agreement.
Id
. Under Subpart F, the agreement provides that Midwest
Generation will achieve reductions in mercury, NO
x
, Particulate Matter (PM), and SO
2
emissions
through a combination of permanent shut-downs of EGUs, installation of activated halogenated
carbon injection systems for reduction of mercury (ACI), and installation of pollution control
equipment for NO
x
, PM, and SO
2
emissions that will also reduce mercury emissions.
Id
.
BOARD FIRST-NOTICE DISCUSSION
As the Board stated in its first-notice opinion of April 19, 2007, the majority of
participants in this rulemaking supported the majority of the IEPA-proposed rule, as amended
during this proceeding. The Board noted, however, that significant contested issues remained:
(1) whether the CASA is too large; (2) whether over-fired air (OFA) projects should be excluded
from receiving allowances from the CASA 25% set aside; (3) whether a
pro rata
allocation of
allowances from the CASA is appropriate; (4) whether FBC boilers should receive CASA
allowances in the clean coal technology category; (5) whether allocations should be based on
gross electrical output or heat input; (6) whether a two-year “look-back” provision updated on an
annual basis to determine an EGU’s allowances is appropriate; (7) whether the air quality
modeling submitted IEPA in its Technical Support Document (TSD) is appropriate and
supportive of the emissions standards in the proposal; (8) whether fuel-weighting as proposed is
appropriate; and (9) whether a new Subpart F, Combined Pollutant Standards (CPS), should be
included in the proposal. The Board at first notice addressed each of these contested issues in
turn, as described below.
Size of the Clean Air Set-Aside (CASA)
The Board noted that the CASA, and particularly the 25% set-aside, has been widely
addressed during this rulemaking. IEPA asserted that USEPA left the authority to the individual
states to distribute their allocations as necessary to meet each state’s individual goals. PC 5 at 7.

12
IEPA contended that a financial analysis of the impact of the worst-case scenario (retiring the
30% set-aside (CASA plus NUSA) and relying solely on a 70% main pool) showed that the
reliability of the grid would be intact and residential and commercial electric rates would not be
greatly impacted.
Id
.
Kincaid provided testimony that the 30% set-aside is too great and that the proposal
penalizes facilities that have already installed the best available technology.
See
Kincaid Exh. 1
(Testimony of Saladino) at 13. Kincaid argued that the IEPA proposal to adopt “beyond CAIR”
NO
x
reductions through a proposed set-aside program that far surpasses that of any surrounding
states, places Illinois electricity consumers at a severe economic disadvantage. PC 10 at 6.
Kincaid contended that there appears to be little chance that these allowances will ever be
returned to the EGUs because the proposal calls for any NO
x
allowances that remain unclaimed
from the four CASA allowance pools to be used to replenish each of the four CASA pools. PC
10 at 6.
Zion asserted that IEPA’s proposed 25% CASA is far out of line with the proposed set-
aside pools in many other CAIR states. PC 3 at 3. Zion suggested a CASA set-aside percentage
in the 5-10% range. Setting aside 25% of the allowance pool, in Zion’s opinion, unjustifiably
increases the compliance burden on facilities that already face significant emission reduction
obligations through an artificial reduction in allowances available for allocations.
Id
. at 4. Zion
also proposed that CASA applicants be restricted to electric generating sources and that non-
generating sources be eliminated from consideration in the proposed rule.
Id.
Ameren stated that CASA represents a useful balancing of technology, economic, energy,
and environmental considerations. Ameren requested the Board to adopt those portions of the
amended proposal that allow Ameren and other companies seeking to use the Multi-Pollutant
Strategy (MPS) to obtain CASA allowances. PC 4 at 3.
Dynegy and SIPC contended that a set-aside of 25% for the CASA is not justifiable. PC
6 at 2. They argued that setting aside 25% of Illinois’ cap is the equivalent of providing no
allowances to approximately a 4,250 megawatt (MW) EGU, and that this amounts to not
allocating allowances to the entirety of Dynegy’s system, plus City Water Light & Power and
SIPC, with 102 MW “still not accounted for.” PC 6 at 10-11.
Conversely, ELPC provided testimony recommending that the EE/RE set-asides be
increased to be consistent with the policy goals and policy targets set forth in the Governor
Blagojevich’s Sustainable Energy Plan. Tr.2 at 138. ELPC testified that increasing the EE/RE
set-aside from 12-15.4% would provide enough allowances to reach the Governor’s Sustainable
Energy Plan goal of having 10% of the electricity provided to Illinois consumers come from
renewable energy sources by 2015. PC 7 at 3.
The Board found at first notice that the set-aside as proposed by IEPA is appropriate.
Kincaid’s assertion that it is penalized for previously installing technology is interesting but not
persuasive. IEPA has stated that its goal in drafting the set-aside was to reasonably maximize
the impact for future emissions reductions, and not to reward entities that would already be using
emission controls. As the Board noted, the intention appears to have been to provide as large an

 
13
incentive as possible to attract new controls by subsidizing the large installation costs and not the
already existing, and smaller, operational costs. The Board at first notice agreed that providing
incentives for controls already installed would lessen the incentive for new controls.
Further, the record showed that a number of facilities are in a situation similar to Kincaid
regarding CASA allowances for already-installed equipment. Fourteen units are controlled by
SCR/selective non-catalytic NO
x
reduction (SNCR), one unit controlled by baghouse, and five
units controlled by flue gas desulfurization (FGD). Each of these units is ineligible for CASA as
proposed.
Kincaid acknowledged at hearing that installing the SCRs was a voluntary decision made
for business purposes.
See
Kincaid Exh. 1 (Testimony of Saladino) at 7. Kincaid’s installation
of the SCRs was spurred at least in part by the incentives presented by the early reduction credits
available under Section 217.770 of the Subpart W rules. Thus, CASA aside, Kincaid has already
received credit to assist in recovering installation costs for its SCRs. Finally, the Board at first
notice agreed with IEPA that, while entities that have previously installed controls may not avail
themselves of CASA allocations for those installations, such entities may still earn allowances by
participating in a different CASA category.
At first notice, the Board found that ELPC’s position, that IEPA should increase the
EE/RE set-asides from 12-15.4% to be consistent with the policy of Governor Blagojevich’s
Sustainable Energy Plan, is likewise without merit. The Governor’s Sustainable Energy Plan
and the allocation methodology proposed in the Illinois CAIR may both encourage renewable
energy and energy efficiency, but they are separate programs. IEPA has stated that it did not
intend to set its EE/RE allocations predicated on the policy goals of the Governor’s Sustainable
Energy Plan. Nonetheless, the Board noted that the possibility of under-subscription in CASA
categories other than EE/RE may result in allocations eligible for approved EE/RE projects,
thereby exceeding the 12% initial design value.
Over-Fired Air (OFA)
The Board observed at first notice that a question existed as to whether OFA projects
should be excluded from receiving allowances from the CASA. As proposed by IEPA, Sections
225.460(c)(1) and 225.560(c) specifically excluded OFA from the list of projects eligible for
CASA clean technology allowances. IEPA maintained that neither standard OFA nor advanced
OFA should be an eligible project for the CASA. IEPA argued that OFA is expected to be a
common NO
x
control employed by sources under the model CAIR trading program due to its
low costs. PC 5 at 10. According to IEPA, allowing OFA or advanced OFA to be considered for
allowances from the CASA could greatly reduce the available CASA allowances and, therefore,
reduce the incentive for sources to install the significantly more costly and typically more
effective NO
x
controls such as SNCR and SCR.
Id
. at 10-11.
Ameren requested that the Board allow the use of CASA allowances to support advanced
OFA NO
x
reduction strategies. PC 4 at 1. Ameren proposed that projects providing advanced
OFA to achieve at least a 30% reduction of the baseline NO
x
or OFA projects that are included as

 
14
part of a comprehensive NO
x
reduction strategy with other listed technologies be allowed to
receive CASA allowances.
Id
. at 3.
Dynegy and SIPC argued that if the Board were to accept Ameren’s proposal without
certain qualifications, Ameren would again be rewarded merely for coming to par with the other
generators in the State. PC 6 at 16. Dynegy and SIPC contended that unless the regulated
community as a whole would be given credit for OFA systems, regardless of the date of
installation, that achieve a specified level of NO
x
removal rather than by use of some type of
ambiguous “advanced” OFA scheme, they cannot support Ameren’s requested addition to the
CASA.
Id
. at 17.
In reviewing the record, the Board noted that the main reason cited by many companies
for not installing controls is the large capital costs, and to a lesser degree the generally smaller
ongoing operating and maintenance costs. The testimony showed that the costs of OFA and
advanced OFA are significantly less than the costs of other controls. IEPA’s primary stated
purpose in establishing the pollution control upgrade category of the CASA is to lower the
capitol costs of upgrading, thereby promoting more expensive controls than OFA and advanced
OFA. Further, IEPA contended that the more costly controls generally result in the greatest
reductions in emissions. PC 5 at 10.
At first notice, the Board agreed with IEPA in that no evidence exists that advanced OFA
would result in significantly higher costs than standard OFA. The Board found that IEPA’s
conclusion, that it is likely that many units would be installing OFA control technology even
without CASA incentives, is soundly supported in the record.
See
,
e.g.
, Ameren Exh. 1 at 5.
Further, any CASA allowances allocated to OFA or advanced OFA could possibly offset more
costly controls with greater reductions in emissions and, therefore, increase the probability that
such controls will not be installed, whereas it does not appear that further incentive for the use of
OFA and advanced OFA is necessary.
Pro rata
Allocation of Allowances from the CASA
IEPA argued that
pro rata
allocation of CASA allowances (a proportionate sharing
among all eligible parties) is the best allocation method in that it provides equality for applicants
as well as ease of implementation for IEPA. IEPA specifically determined that fixed portion
schemes would be difficult to implement because the CASA allocation scheme is based on the
number of electricity hours generated or conserved and will vary each year.
Christian County Generation provided testimony in support of eliminating
pro rata
reductions of CASA allocations for early adopters, primarily to reduce the uncertainty in
allocations introduced by a
pro rata
allotment. Christian County Exh. 1 (Testimony of Kunkel)
at 6. As an alternative, Christian County Generation suggested a “first-come first-served” basis.
Tr.2 at 156.
The Board at first notice found that a proportionate sharing of allowances among all
eligible applications is appropriate. The Board agreed with IEPA that a system using fixed
portions could lead to difficulties in execution because the CASA is based on the number of

 
15
electricity hours generated or conserved, which will vary on a yearly basis. A
pro rata
allocation
system, the Board found, would open up the CASA to all eligible facilities, and would also be
workable from IEPA’s perspective.
Fluidized Bed Combustion (FBC) Boilers
In its in initial proposal, IEPA proposed that FBC boilers be allowed to receive CASA
allowances in the clean coal technology category. However, IEPA committed to review its
stance on this issue after the first hearing and proposed before first notice that Illinois’ single
existing FBC boiler be allowed to receive CASA allowances, but that allowances to any future
FBC boilers be denied. PC 5 at 11. The Board agreed with IEPA and at first notice adopted the
revisions proposed by IEPA to Sections 225.460 and 225.465 with some minor changes.
ELPC argued that allowances should not be available as proposed for FBC boilers. PC 7
at 2. ELPC argued that FBC boilers should not receive CASA credits because: (1) controlled
FBCs are not lower in NO
x
emissions than controlled pulverized coal (PC) boilers; (2) they do
not achieve the low NO
x
emissions that integrated gasification combined cycle (IGCC) plants do;
and (3) they emit more greenhouse gases than PC boilers.
Id
. at 4.
ELPC argued that because new FBC boilers have not been required to install the most
effective NO
x
controls, PC boilers achieve lower NO
x
emissions levels and have lower NO
x
permit levels than FBC boilers. PC 7 at 6. PC boilers using the most modern NO
x
controls
achieve approximately 30% lower NO
x
emissions than FBCs, which are generally built without
the best-performing control technology, according to ELPC.
Id
. Further, ELPC argued that
expected NO
x
emission levels for recently-proposed IGCC plants result in more than 45% lower
NO
x
emissions.
Id
. at 7.
The Board noted at first notice that Illinois has 59 coal-fired boilers that would be
affected by the proposal. Only one of these is an FBC boiler: the SIPC FBC boiler in Marion.
The other boilers are all pulverized coal combustion (PCC) boilers and cyclone-fired boilers
(which burn crushed coal). The SIPC FBC boiler was constructed in 2001 and began operating
in 2003. PC 5 at 11.
The SIPC FBC boiler is approximately 120 MW in size, fires predominantly Illinois coal,
and is a circulating FBC boiler with limestone injection and add-on controls consisting of an
SNCR and baghouse. From 2003 to 2005, the SIPC FBC boiler had an average annual NO
x
emission rate of 0.10 lbs/mmBtu, which is lower than the system-wide NO
x
emission rates for
any of the other boilers in Illinois. It is believed that this NO
x
emission rate was achieved with
only part-time operation of the SNCR for NO
x
control. The NO
x
emission rate from SIPC’s FBC
boiler has reached as low as 0.06 lbs/mmBtu during the third quarter of 2005. For SO
2
, the FBC
boiler had an average annual NO
x
emission rate of 0.47 lbs/mmBtu, which likewise is lower than
the system-wide SO
2
emission rates for any of the other boilers in Illinois. These emission rates
could be lower should SIPC decide to more fully use the NO
x
controls currently in place or
install additional controls for NO
x
and SO
2
on the FBC boiler.
Id.
at 12.

16
Regarding the existing SIPC FBC boiler, the Board at first notice agreed with IEPA that
it is appropriate to recognize SIPC’s prior initiative to invest in a cleaner technology and allow
SIPC FBC to receive CASA allowances. The record indicates that the uncontrolled emission
rates of FBC boilers are lower than the emission rates of other boilers for both NO
x
and SO
2
.
Further, the SIPC FBC boiler’s actual emissions between 2003 and 2005 averaged 0.10
lbs/mmBtu for NO
x
and 0.47 lbs/mmBtu for SO
2
with part-time operation of SNCR for NO
x
control. As noted by IEPA, the FBC boiler emission rates could be lower should SIPC decide to
more fully utilize the NO
x
controls currently in place or install additional controls for NO
x
and
SO
2
on the FBC boiler. Allowing the SIPC FBC to receive CASA allowances provides an
incentive for SIPC to further reduce NO
x
emissions because the number of CASA allowances
received is proportional to the amount of NO
x
emitted.
The Board additionally found at first notice that it was proper to deny access to CASA
allowances for any new FBC boiler. At the time of construction, SIPC’s FBC boiler was
considered a more current technology for utility boilers. PC 5 at 11. Since the installation of
SIPC’s FBC boiler, however, IGCC facilities have become commercially viable and the number
of applications for IGCC permits has increased nationwide.
Id
. at 13. The Board found that the
record is clear, and IEPA acknowledges, that FBC boilers result in higher NO
x
emissions than
IGCC plants. IGCC have become commercially viable. The Board at first notice found that
CASA allowances for clean coal technology must be available only for the most promising
commercially available technology,
i.e
., IGCC.
The Board also found persuasive ELPC’s argument that it is inappropriate to allow
“other” technologies that achieve emission rates comparable to FBC boilers to receive CASA
allowance. PC 7 at 6. To further IEPA’s intent and implement ELPC’s suggestion, the Board
amended Section 225.460(e) to exclude FBC boilers from the list of comparable technologies.
The Board therefore amended Section 225.460(e) to limit the comparison only to projects similar
in effect as the projects listed in Sections 225.460(a), (b), (c)(1) and (c)(2)(A).
IEPA proposed revisions to the allocation method in Sections 225.465(b)(5)(B) and
225.565(b)(5)(B) relating to allocating CASA allowances to clean coal technology projects to
account for the fact that SIPC directly measures its emission rate in pound per megawatt
(lb/MW) rather than converting from pound per million Btu (lb/mmBtu). PC 5 at 17-18. IEPA
asserted that the proposed revision would not result in a significant change for the CASA
allowance distribution.
Id
. The proposed revision would include new subsections in Sections
225.465(b)(5)(B) and 225.565(b)(5)(B). Subsection (b)(5)(B) would include an equation similar
in all respects to the prior method with the exception of a factor change from 1.0 to 1.4. The
factor change would compensate for SIPC’s direct measurements and provide the same level of
incentive that IEPA was previously attempting to achieve.
Id
.
At first notice, the Board agreed that the SIPC FBC boiler represents a special
circumstance as compared to the other boilers in the State. The Board found that the solution
proposed by IEPA has merit in that it recognizes the difference between the SIPC FBC boiler
and existing boilers, while also recognizing that clean coal technology has improved since the
SIPC FBC boiler was constructed. As stated in the first-notice opinion, IEPA’s new proposal

 
17
along with the changes made by the Board should also alleviate the concerns raised by ELPC in
that future FBC boilers will not have access to CASA clean coal technology allowances.
The Board explained that by focusing on the most promising technology, IGCC, IEPA’s
proposal accomplishes CASA intentions while not penalizing SIPC for its recent installation of,
what until recently, was the best commercially viable technology. As is evidenced by the
increasing number of IGCC applications for permits nationwide, it is only recently that have
IGCC facilities been recognized and accepted as commercially viable. Thus, the Board found
that IEPA’s amended proposal that Illinois’ existing FBC boiler be allowed to receive CASA
allowances, but that allowances to any future FBC boilers be denied, is appropriate.
Two-Year “Look-Back”
As the Board observed in its first-notice opinion, IEPA’s proposed rule for allowance
trading includes a two-year look-back period, updated on an annual basis, to determine an EGU’s
allowances. Dynegy and SIPC were troubled by IEPA’s approach to annual allowance
allocations. The companies’ concern with the two-year look-back was that the look-back period
would, from time to time, encompass periods when the EGUs experience outages of various
lengths of time. PC 6 at 28. Dynegy and SIPC were concerned with the look-back being so
short, with no “levelizing” allowed through the averaging of a number of years’ operations
chosen from a larger number of years, such as the highest three years’ operation out of a
specified five-year period. PC 6 at 28-29. The companies argued that in light of IEPA’s past
failure to timely allocate allowances, it becomes critical that the updating occur annually and
timely. PC 6 at 29.
Dynegy and SIPC argued that USEPA suggested a permanent baseline for sources in the
model rule with new sources rolling into the existing source permanent baseline once they have
five years’ operating data, causing an adjustment of all existing sources’ allocations. PC 6 at 29,
citing 70 Fed. Reg. 25161, 25279 (May 12, 2005). Dynegy and SIPC argued that a permanent
baseline comprised of the three highest years’ operational heat input or converted heat input over
a five-year period would provide the level of certainty of the allowance stream. PC 6 at 32.
Midwest Generation also expressed concern about the impact of outages on what it
opined is a short, two-year, look-back period. PC 8 at 1. Midwest Generation asserted that
under the language of the rule, these situations cannot be avoided.
Id.
Further, Midwest
Generation noted that USEPA has provided in its NO
x
trading rules that when a state fails to
timely allocate allowances, USEPA will rely upon the previous allocation to cover the
unallocated period. PC 8 at 3. Thus, argued Midwest Generation, if a timely allocation is not
made for the two NO
x
programs proposed by these rules, some EGUs may be frozen at an
allowance level that reflects extensive outages.
Id.
Midwest Generation supported revising the
rule to reflect a three-year averaging concept and five-year look-back period.
The Board found at first notice that, mindful of the issues concerning a two-year look-
back, the benefits of a relatively short look-back period outweigh any potential difficulties.
IEPA asserted that a two-year look-back period provides an incentive for efficient operations,

 
18
which will result in fewer emissions per unit of power produced. Stat. at 35. The Board agreed
with this general principle.
In addition, the concerns raised by Midwest Generation, SIPC, and Dynegy were also
raised with IEPA prior to the proposal being filed with the Board. In response, IEPA changed
the initial look-back period for the 2009, 2010, and 2011 control periods from using data only
from 2004 and 2005, to allowing the use of data from the three highest control periods of 2001
through 2005. Stat. at 48. IEPA reasoned that because companies did not have an opportunity to
plan for the first allocation when scheduling outages, such a change was appropriate, and that
with respect to future allocations, the allocations will balance out.
Id
.
Again, the Board found IEPA’s logic persuasive. Also, the changes incorporated into the
proposal to allow the use of data from the three highest periods should alleviate the concerns
raised. As the Board explained, because allocations are made annually and with a shorter look-
back period, if a company has a planned outage in one control period, it will need and will
receive fewer allowances for that control period, and because the company should have received
allowances for that future outage year based on a higher rate of operation, it should have excess
banked allowances from the outage year that it can use for the allocation year that reflects the
prior outage. Thus, the short look-back period allows low and high usage years to be quickly
accounted for, and the Board adopted the rule for first notice as proposed in this regard.
Heat Input vs. Gross Electrical Output
IEPA proposed that allocations be based on gross electrical output for both new and
existing affected units. For sources that do not currently have the equipment installed to measure
gross electrical output, the initial allocations for control periods 2009 through 2011 will be based
on heat input. A conversion factor of 3.413 mmBtu/MWh and an efficiency factor of 33% would
be used to convert the heat input of a unit to gross electrical output. Stat. at 35; TSD at 101.
Midwest Generation requested that the Board consider heat input as the basis for
allocations, which is what Midwest Generation has reported and certified for years. PC 8 at 5.
Midwest Generation argued that heat input data is more reliable than output data as the manner
of output data’s measurement and its quality assurance is not uniform.
Id.
The joint comment filed by Dynegy and SIPC asserted that the two companies generally
prefer that allocations be based upon heat input rather than gross electrical output as proposed by
IEPA. PC 6 at 2. However, that same public comment provided that Dynegy prefers reliance on
gross electrical output as the basis for allocations, but would find heat input as a basis for
allocations acceptable. PC 6 at 24. Nonetheless, Dynegy and SIPC asserted that the efficiency
assumed in IEPA’s formula at Section 225.435(a)(2) to convert heat input to gross electrical
output is not representative of actual efficiencies at the plants.
Id
.
Further, Dynegy and SIPC stated that it is their understanding that IEPA will accept as
gross electrical output data any data that is acceptable to USEPA pursuant to 40 C.F.R. § 60 or
75. PC 6 at 27. Dynegy and SIPC were concerned about language currently in the rule
suggesting that there must be an actual measurement device installed on the generator,

 
19
effectively a wattmeter, when that is not required by USEPA under 40 C.F.R. § 60 or 75.
Dynegy and SIPC asked the Board to ensure that the language included in the rule reflects the
parties’ intent.
Id
.
Christian County Generation provided testimony that its IGCC project would be greatly
disadvantaged by an allocation methodology that relies upon heat input. Tr.2 at 126-29.
The Board found at first notice that IEPA’s proposal to use gross electrical output as a
basis for distributing allowances is reasonable. IEPA’s proposal allows owners and operators
that do not have gross electrical output data for the initial look-back period to use heat input data
for the allocations during the first three control periods. Additional flexibility was provided in
the amendment to the proposal filed on November 27, 2006. As amended, the proposal clarified
that either gross electrical output or heat input may be used to calculate converted gross output
for the control periods 2009 through 2013.
The Board found at first notice that gross electrical output does encourage efficiency, and
that its application in this instance, as amended, is technical feasible and economically
reasonable.
Air Quality Modeling
Kincaid urged IEPA to conduct a thorough modeling demonstration to determine the
level of reductions that may be necessary to resolve any residual non-attainment problems
following implementation of the CAIR reductions. PC 10 at 3; Kincaid Exh. 1 (Test. of
Saladino) at 4-5. Kincaid asserted that recent air quality modeling by the Lake Michigan Air
Directors Consortium (LADCO) suggests additional reductions from the EGU sector beyond the
reductions expected from the federal CAIR program will not solve the residual ozone and PM
2.5
non-attainment problem in the Chicago area. PC 10 at 4.
IEPA asserted that it presented the results of two modeling studies in the TSD that
address the issues raised by Kincaid, and has, therefore, already presented the type of modeling
suggested. PC 5 at 19.
In reviewing the record, the Board noted at first notice that in March 2005, USEPA
presented a document entitled: “Technical Support Document for the Final Clean Air Interstate
Rule – Air Quality Modeling.” TSD at 35. IEPA summarized USEPA’s modeling results in the
TSD showing that NO
x
and SO
2
reductions from power plants are effective in reducing ozone
and PM
2.5
concentrations in downwind nonattainment areas, but that CAIR would not provide
sufficient emission reductions, even in Phase II, to allow the Chicago nonattainment area to
attain either the ozone or PM
2.5
standards.
Id
.
The TSD also presented the results of modeling performed by LADCO.
See
Table 3-5 of
the TSD. The LADCO modeling indicates that to reach the emission reduction targets needed
for both ozone and PM
2.5
attainment, local volatile organic compound (VOC) reductions of
approximately 75% are needed for Chicago to attain the ozone standard, assuming that no
additional reductions are achieved regionally beyond those provided by CAIR.

 
20
IEPA asserted that when regional reductions of NO
x
and SO
2
are made, the modeling
indicates that there is less emission reduction burden in the nonattainment area. USEPA’s
modeling, therefore, clearly shows that Illinois must seek additional emission reductions, either
locally or regionally, to achieve attainment of the air quality standards. PC 5 at 19.
At first notice, the Board found that modeling submitted by IEPA in the TSD is
appropriate and supportive of the emissions standards in the proposal. The record indicates that
lowering emissions of NO
x
and SO
2
from power plants is effective in reducing ozone and PM
2.5
concentrations in downwind nonattainment areas. Therefore, the Board found that the record
supports adopting the proposal, and that no additional modeling is needed at this time.
Fuel-Weighting
The various participants were split on this issue, but IEPA maintained that fuel-weighting
as proposed is appropriate. Zion preferred a fuel-neutral allocation mechanism, but was willing
to consider a compromise alternative fuel-weighting factor that closes the gap between the fuel-
neutral option and IEPA’s proposal. Zion suggested a compromise factor of 0.7 for both gas-
fired and oil-fired units. PC 3 at 2.
ELPC urged the elimination or modification of the fuel-weighting component of the
proposed Illinois rule, arguing that a fuel-neutral approach would achieve the deeper, faster
reductions IEPA seeks. PC 7 at 10.
Dynegy and SIPC supported IEPA’s proposal regarding weights assigned to fuel types,
noting that USEPA retained the fuel factors. Dynegy and SIPC encouraged the Board to retain
them as proposed by IEPA. PC 6 at 27-28.
The Board noted that the fuel-weighting factors in the proposal are identical to the federal
CAIR model rule and reflect different burdens to control emissions. As testified to at hearing,
coal-fired units bear the greatest burden to achieve emission reductions under CAIR. Tr.1 at
127-29. This is also the reason stated by USEPA for not employing a fuel-neutral allocation
methodology in the CAIR model rule.
The Board agreed at first notice with IEPA that the predominant sources of both NO
x
and
SO
2
emissions in Illinois are from coal-fired power plants, and that these sources likewise have
higher emission rates for both pollutants. Reductions at these sources, therefore, will provide the
greatest benefits. As the Board explained, the more feasible controlling these emissions is under
the proposed rule, the more likely they are to be controlled. Accordingly, the Board did not
modify IEPA’s approach to fuel-weighting as proposed.
Proposed Subpart F: Combined Pollutant Standards (CPS)
IEPA and Midwest Generation proposed that a new Subpart F, CPS, be added to the
proposal as a result of a December 10, 2006 MOU between the parties. The new subpart

 
21
establishes an alternative means of compliance with emissions standards for mercury in Subpart
B, Section 225.230(a) and would establish specific emissions levels for NO
x
, PM, and SO
2.
The proposed subpart was included in joint public comments, PC 9 and PC 11, filed
before the Board on January 5 and 10, 2007, respectively. At first notice, the Board agreed that
the proposal for compliance set forth in Subpart F would achieve greater reductions in SO
2
, NO
x
,
and mercury than the proposed CAIR standards. The Board also found the proposed Subpart F
would further reduce ambient levels of ozone and PM
2.5
, leading to benefits to public health and
the environment. The parties to the MOU asserted that the proposed Subpart F is both
technically feasible and economically reasonable, and that the level of mercury, NO
x
, and SO
2
reductions required in the proposed Subpart F is expected to substantially contribute to the
State’s efforts to achieve the CAA’s NAAQS. PC 9 at 4.
The Board found at first notice that Subpart F is technically feasible and economically
reasonable, and included the subpart in the proposal the Board adopted.
Technical Feasibility and Economic Reasonableness
In its first-notice opinion, the Board found that IEPA demonstrated that technology is
available to meet CAIR requirements. The Board first discussed the CAIR SO
2
and NO
x
issues
before reaching a decision on technical feasibility and economic reasonableness.
SO
2
In the federal CAIR and supporting documents, USEPA has determined that the control
techniques required for EGUs to comply with the CAIR SO
2
trading program are highly cost-
effective, and are, thus, technically feasible and economically reasonable. Stat. at 40, citing Exh.
A, 70 Fed. Reg. 25165 (May 12, 2005).
Control techniques for reducing SO
2
emissions from new or existing fossil fuel-fired
EGUs include physical coal cleaning to remove pyrites (inorganic sulfur compounds); chemical
coal cleaning to remove pyrites and organic sulfur present in coal; switching to either natural gas
or to low sulfur western coal; blending coal and limestone before combustion; dry scrubbing
with limestone or lime slurry (also called spray dryer absorber); and FGD. Stat. at 41; TSD 5.1.
As the Board discussed, the record shows that coal cleaning can result in SO
2
emission
reductions ranging from 10-40% for physical coal cleaning and can result in SO
2
emission
reductions ranging from 50-75% for chemical coal cleaning, while emissions reductions
achieved through fuel substitution depend on the type of fuel, ranging from 50-80% from
switching to low-sulfur coal to 98-100% from switching to natural gas. TSD 5.1. Emission
reductions from dry SO
2
removal range from 60-85% for combustion of a limestone mixture to
90-98% when spray drying is used in conjunction. Other than fuel switching to natural gas, the
greatest emission reductions of SO
2
are achieved through the use of a FGD, ranging from 90-
98% reduction, regardless of the type used.
Id
.
IEPA contended that costs of coal cleaning processes vary from $10.10 (at 35-70%

22
pyretic sulfur removal) to $58.67 per ton of coal (at 99% pyretic sulfur and 24-72% organic
sulfur removal). Stat. at 42. Cost data for FGD systems, expressed as electrical output, range
from $7.89 to $14.36 mill/kWh for a lime FGD to $9.72 to $63.82 mill/kWh for magnesium
oxide FGDs. TSD 6.1.
The record shows that in Illinois, electric utility units are currently using coal washing,
blending low-sulfur western coal with higher sulfur eastern coal, and FGDs. Blending coal with
limestone is not currently used in Illinois, but companies have submitted applications to IEPA to
use the process at two boilers. TSD 5.1.
IEPA contended that cost-effectiveness of SO
2
controls for Illinois’ EGUs will be $500 to
$800 (in 1999 dollars) per ton of SO
2
reduced in the years 2010 through 2014, and $700 to
$1200 (in 1999 dollars) per ton of SO
2
reduced in the year 2015 and the years thereafter. Stat. at
42, TSD Table 6-6. IEPA asserted that it relied upon the cost analyses performed by USEPA
and believes that the cost-effectiveness of controls for Illinois EGUs will be similar. Stat. at 42.
NO
x
NO
x
emissions from EGUs are regulated in Illinois under the federal Acid Rain Program
(Title IV of the CAA), the NO
x
SIP Call trading program as set forth in Subpart W of 35 Ill.
Adm. Code Part 217, and a state rate-based rule set forth in Subpart V of 35 Ill. Adm. Code Part
217. Under Phase I of the federal Acid Rain program, NO
x
emissions for affected units
lb/mmBtu are limited to 0.45 lb/mmBtu and 0.50 lb/mmBtu for certain existing tangential and
wall-fired boilers burning coal, respectively. Under Phase II, NO
x
emissions are limited to 0.40
and 0.46 for these boilers. The limit for cyclone-fired boilers greater than 155 MW is 0.86
lb/mmBtu.
See
Stat. at 42. However, in Illinois, any unit serving a generator that has a
nameplate capacity greater than 25 MWe and produces electricity for sale was required to meet a
NO
x
emissions limit during the ozone season of 0.25 lb/mmBtu, beginning with the 2003 control
period.
See
35 Ill. Adm. Code 217, Subpart V.
In 2000, Illinois adopted the federal NO
x
SIP Call trading program. An initial NO
x
emission budget for EGUs was established based on an emission rate of 0.15 lb/mmBtu. The
program commenced with the 2004 ozone season. Sources complied with this rule through
either installation of add-on controls, or trading of NO
x
allowances. Stat. at 43
The allowance allocation budget for the CAIR NO
x
Annual and Ozone Season programs
in 2009 is based on a NO
x
emission rate of 0.15 lb/mmBtu and for 2015, 0.125 lb/mmBtu. IEPA
anticipated that sources that installed SNCR with ammonia or urea injection or SCR with
ammonia to comply with the requirements of Subpart W (Federal NO
x
SIP Call trading program)
would be able to meet the requirements of the CAIR NO
x
Annual trading program by operating
the add-on controls year round. Stat. at 43. IEPA asserted that compliance with the CAIR NO
x
Ozone Season trading program during Phase I would not require additional control measures
because the NO
x
allocation budget for the years 2009 through 2014 is the same in Illinois, 30,701
tons for allocation.
Id
.
However, IEPA stated that for the annual program, sources that have not yet installed

23
add-on controls are anticipated to either need to install add-on control or purchase additional
allowances. Stat. at 43-44.
The control technologies available to reduce NO
x
emissions from EGUs have been
discussed at hearing, in public comments, and by USEPA. A listing of the technologies can be
found in table 5-2 of IEPA’s TSD. These technologies include combustion tuning (CT), burner-
out-of-service (BOOS), OFA, Low NO
x
Burners (LNB), Fuel Switching (low nitrogen coal or
natural gas), lean flue gas reburn, SNCR, and SCR. The record indicates that operational
modifications such as BOOS, OFA, and LNB can achieve NO
x
reductions in a range of 10-25%
for coal-fired boilers and 30-50% for gas and oil-fired boilers, reburning can achieve NO
x
reductions in a range of 50-60% for coal-fired boilers and gas and oil-fired boilers, fuel
switching from coal to natural gas or low-nitrogen coal can achieve NO
x
reductions in a range of
40-75% for all types of boilers, while SNCR can achieve NO
x
emission reductions in a range of
30-60% for all types of boilers, and SCR can achieve NO
x
reductions in a range of 75-90% for
all types of boilers.
See
TSD Table 5-2.
Tables 6-3, 6-4, and 6-5 of the TSD summarize the range of cost-effectiveness of the
various control options for each type and size of EGU. TSD Tables 6-3, 6-4, and 6-5.
According to IEPA, for the control periods 2009 through 2014, there will be no additional cost
associated with complying with the CAIR NO
x
Ozone Season trading program because the
Illinois’ CAIR NO
x
Ozone Season budget remains the same as the current NO
x
SIP Call budget.
Stat. at 44. This estimate assumes the cost-effectiveness values for Illinois EGUs are the same as
that calculated by USEPA for the entire region impacted by CAIR.
Id
. For the CAIR NO
x
Annual trading program, there will be an additional cost of $500 per ton to operate these controls
in the non-ozone season in 2009 through 2014 (October 1 through March 31), and the cost-
effectiveness of annual and seasonal NO
x
controls for Illinois EGUs will be $1,600 per ton of
NO
x
reduced in 2015 and thereafter. TSD 6.3.
IEPA used an integrated planning model (IPM) to evaluate the economic impact of the
CASA and NUSA provisions included in this proposal. According to IEPA, the IPM modeling
shows that the reduction of allowances only minimally increases the costs discussed above. Stat.
at 44. IEPA stressed that while the CASA is 25% of the allowances, existing units are eligible to
apply for these allowances for free if they install air pollution controls, build clean units, or
implement other energy conserving or renewable energy projects.
Id
. IEPA contended that IPM
modeling represents the worst-case scenario because it did not address the potential use of any
CASA allowances for the existing EGUs. IEPA noted, however, that future projects will more
likely be eligible for CASA use and thus further reduce cost. Stat. at 45.
Discussion
Section 27(a) of the Act directs the Board to take into account the “technical feasibility
and economic reasonableness of measuring or reducing the particular type of pollution” when
conducting a substantive rulemaking. 415 ILCS 5/27(a) (2006). After carefully reviewing the
entire record, the Board found at first notice that the proposal as amended is technically feasible
and economically reasonable. In making this determination, the Board considered the USEPA
findings on CAIR NO
x
and SO
2
control technology costs and applications, and NO
x
and SO
2

 
24
removal effectiveness. The Board was also persuaded by the IPM modeling provided by IEPA.
In addition to the IPM modeling discussed above, IEPA conducted modeling to determine the
cost impact of the 25% CASA and 5% NUSA on Illinois electricity rates. That modeling
projects that retail electricity rates will not change, and there was a slight change in average
production costs. TSD Table 7.6.
While retail electricity prices for the CAIR region are projected to increase minimally
with the implementation of CAIR, the Board agreed with IEPA that trading will provide EGUs a
cost-effective way to comply with CAIR that will minimize the costs passed on to consumers.
IEPA estimated that regional retail electricity prices will be 2-3% higher with CAIR. In Illinois,
IEPA predicted the retail electricity prices will increase 2.6% in 2010 and 4.3% in 2015 as a
result of implementing CAIR. However, by 2020, IEPA expected rates to decrease 2.6%,
leaving a net increase of 1.7%. TSD 6.4.
The Board noted that the SO
2
trading program IEPA proposed is substantially identical to
the measurement requirements for the federal CAIR Rule developed by USEPA. Further, the
issues concerning NO
x
are issues that relate to the underlying federal requirements. The Board
therefore found USEPA’s decision to adopt the requirements persuasive.
In addition, the Board noted that the interested parties in this rulemaking in large part did
not argue that the proposal is not technically feasible or economically reasonable. Kincaid
argued that no evidence exists in the record of either regulatory proceeding that it is technically
feasible and economically reasonable for the affected facilities to comply simultaneously with
both CAIR and CAMR regulations, and that it has provided information in both regulatory
proceedings that the economic impact of the individual and combined regulations is
unreasonable. PC 10 at 20. The Board disagreed. The Board considered whether each
rulemaking is technically feasible and economically reasonable, and decided affirmatively in
both rules.
SUMMARY OF FIRST-NOTICE PUBLIC COMMENTS
Public Comment 13: SIPC
SIPC stated that because of special circumstances at its facility during the proposed
“look-back” period of 2001 through 2005, SIPC is significantly disadvantaged in calculating
initial allowances. PC 13 at 2. SIPC asserted that due to the timing of construction of a CFB at
its generating station, it is unique relative to the initial allocations. The CFB began operating in
mid-2003 and “went through a shake-down period of a year to a year and a half.”
Id
. It was not
until 2005 that the CFB experienced “‛normal’ operation,” according to SIPC.
Id
.
For this reason, contended SIPC, averaging the converted gross electrical output of 2005
with the other years puts SIPC at a disadvantage for the distribution of initial allocations,
compared to the other EGU’s in the State. PC 13 at 2. SIPC requested that it be allowed to use
only 2005 data, or, alternatively, to average the converted gross electrical output from 2006 with
that from 2005 to determine SIPC’s initial allocation.
Id
. at 3. SIPC proposed amendments to
the first-notice versions of Sections 225.435 and 225.535 as follows:

25
Section 225.435/535 Methodology for Calculating Annual Allocations
The Agency will calculate converted gross electrical output, in MWh, for each
CAIR NO
x
unit that has operated during at least one calendar year prior to the
calendar year in which the Agency reports the allocations to USEPA as follows:
a)
For control periods 2009, 2010, and 2011 . . . :
1)
Gross electrical output. . . . If the unit does not have gross
electrical output for the 2004 and 2005 control periods, the gross
electrical output will be the gross electrical output data from the
2005 control period. The gross electrical output data from the
2005 control period will be used for Unit 123 at SIPC. . . .
2)
Heat input (HI). . . . If the unit does not have heat input from the
2004 and 2005 control periods, the heat input from the 2005
control period will be used. The heat input from the 2005 control
period will be used for Unit 123 at SIPC. . . .
Id
.
SIPC stated that IEPA did not agree with the above amendment because it would have to
adjust initial allocations that it has already calculated and submitted to USEPA to meet early
deadlines. SIPC did not believe this to be an adequate reason and noted that perhaps IEPA was
premature in submitting a rule to USEPA prior to second notice. PC 13 at 4.
SIPC also asked the Board to amend Sections 225.435(a) and 225.535(a), which provide
that the owners or operators of EGUs subject to CAIR may tell IEPA whether they want their
initial allocations determined on the basis of gross electrical output or heat input converted to
gross electrical output. As SIPC pointed out, however, the June 1, 2007 deadline for the owners
or operators to submit their choices had passed. PC 13 at 4-5. Accordingly, without amendment,
the rule “improperly contains a deadline that predates the final adoption and effectiveness of the
rule.”
Id
. at 5
SIPC preferred to have all allocations based upon heat input. SIPC stated that any
efficiencies from basing allocations on gross electrical output “are not available to SIPC and any
other type of unit that has pollution control as part of the boiler.” PC 13 at 5. Due to the “pre-
adoption deadline contained in the rule,” SIPC asked the Board to ensure that Sections
225.435(a) and 225.535(a) reflect that initial allocations will be based only on heat input, with no
conversions to gross electrical output. Later in its public comment, SIPC nevertheless requested
that the Board amend the date by which sources must notify IEPA of their “choice regarding use
of heat input or (converted) electrical output to a date after the rule is adopted.”
Id
. at 6-7.
SIPC also pointed out that IEPA’s proposed revision to the formulae at Sections
225.465(b)(5)(B) and 225.565(b)(5)(B), with which the Board concurred, did not appear in the
first-notice language through apparent inadvertent omission. PC 13 at 5-6. SIPC explained that
the IEPA-proposed revision accommodates SIPC’s CFB by changing the factor of 1.0 to 1.4 in

 
26
the equation used to determine the number of allowances that SIPC may receive from the CASA.
SIPC requested that the amendment be included at second notice.
Id
.
Public Comment 14: Midwest Generation
Midwest Generation sought to amend the method used in Subpart F, Combined Pollutant
Standards (CPS), for determining the flue gas flow rate. PC 14 at 1. According to Midwest
Generation, in Section 225.615(g)(4), the flue gas flow rate:
must be determined for the point of sorbent injection; provided that this flow rate
may be assumed to be identical to the stack flow rate if the gas temperatures at the
point of injection and the stack are normally within 100° F, or it may otherwise be
calculated from the stack flow rate, corrected for the difference in gas
temperatures.
Id
.
Midwest Generation proposed to amend Section 225.615(g)(4) to allow for correction of
the flue gas flow rate for the amount of “air in-leakage” between the injection location and the
stack, in addition to the difference in gas temperatures already allowed under the proposed rule.
PC 14 at 1. Midwest Generation maintained that allowing for this additional correction would
provide several benefits. For example, the correction would provide a more accurate
determination of the flue gas flow rate, resulting in a reduction of unnecessary sorbent use
“where the cost of such sorbent is significant and where the supply of sorbent is limited and may
be subject to shortfalls.”
Id
. According to Midwest Generation, the correction would neither
diminish neither the effectiveness of the applied sorbent nor the ability of an affected source to
otherwise comply with mercury emissions limits.
Midwest Generation proposed the following amendments to the first-notice version of
Section 225.615(g)(4):
(g)(4) For purposes of subsection (g)(3) of this Section, the flue gas flow rate
must be determined for the point of sorbent injection; provided that this flow rate
may be assumed to be identical to the stack flow rate if the gas temperatures at the
point of injection and the stack are normally within 100º F, or the flue gas flow
rate may otherwise be calculated from the stack flow rate, corrected for the
difference in gas temperatures and air leakage into the ductwork after the point of
injection as determined by measurement of O
2
or CO
2
. Unless the Agency
approves an alternative procedure, the following equations shall be used to
determine the flow rate at the point of injection corrected for air in-leakage into
the ductwork:
Corrected Flow Rate (acfm) = Stack Flow Rate (acfm) x (1-Air In-Leakage
Factor)
where:
Air In-Leakage Factor = (%O
2
, Stack, Wet - %O
2
, ESP Inlet, Wet)

 
27
(20.9 - %O
2
, Stack, Wet)
or
Air In-Leakage Factor = (%CO
2
, ESP Inlet, Wet - %CO
2
, Stack, Wet)
(%CO
2
, Stack, Wet)
For purposes of this subsection, “acfm” shall mean actual cubic feet per minute.
PC 14 at 2.
Public Comment 15: IEPA
IEPA stressed the need for expedited adoption of the CAIR proposal. According to
IEPA, to avoid having USEPA’s Federal Implementation Plan (FIP) allocate NO
x
emission
allowances in Illinois for the 2009 control period:
Initial allocations based on a fully adopted state rule are required to be submitted
to USEPA no later than September 30, 2007. If Illinois fails to either fully adopt
its CAIR proposal by September 25, 2007, or submit final NOx allocations for the
Annual and Ozone trading programs by September 30, 2007, USEPA will use the
NO
x
allocations for Illinois sources as set forth in the FIP. PC 15 at 2-3, citing 71
Fed. Reg. 25328 (Apr. 28, 2006).
Later in its public comment, IEPA emphasized the “importance and urgency in the Board
continuing to handle this rulemaking in an expedited manner such that a final rule is effective
before September 2007 if at all possible.”
Id
. at 4.
IEPA also responded to the issues raised in the public comments of SIPC and Midwest
Generation. IEPA disagreed that the initial allocation methodology significantly disadvantages
SIPC. PC 15 at 4. Even if SIPC did not have three years of “normal” operations during the
initial look-back period, IEPA maintained that SIPC should not be treated differently from any
other regulated source:
In any regulation of general applicability, there will always be affected sources
that say the rule affects them differently than somebody else. However, adding a
special provision for SIPC raises the question of what other sources might have
issues whereby they did not have “normal” operations during the look-back
period – whatever “normal” might mean.
***
[G]ranting a special, essentially site-specific, change in the regulation for SIPC
opens the door to all other affected regulated entities to request special treatment
as well.
Id
. at 4-5.
IEPA also maintained that giving SIPC special treatment in the rule would be unfair and
harm other sources. Because Illinois has a fixed number of allowances, “[a]ny allowance that is
given to SIPC must be removed from the allocation for another source – a source that has

28
demonstrated a need for that allowance using the proper allocation calculation.” PC at 5.
Additionally, IEPA asserted that SIPC’s unit does not need the extra allowances. Based
on SIPC’s description of 2005 being its first “normal” year, IEPA estimated the approximate
number of allowances SIPC would need for its unit. According to IEPA, the available
information indicates that if SIPC:
runs its control device throughout the year, it will easily have enough allowances,
based on the draft allocations sent to USEPA by the Illinois EPA and posted on its
website, to cover Unit 123. In addition, SIPC will almost certainly receive
additional
allowances from the CASA. This means SIPC should not only have
enough allowances to cover emissions from Unit 123, but also have enough
allowances to bank or sell. PC 15 at 4-5 (emphasis in original).
IEPA further disagreed with SIPC’s call for initial allocations to be based solely on heat
input. IEPA stated it is aware that the deadline for submitting gross electrical output data has
already passed and therefore needs to be modified in the rule. IEPA’s public comment proposed
language to remedy that problem. PC 15 at 5. SIPC’s concerns about efficiency, continued
IEPA, have been addressed at length in this record. Even though one of SIPC’s boilers may not
be as efficient as others in the State, IEPA explained, CFB boilers were considered in the
design of the regulation and:
Any perceived shortfall in allowances allocated to this unit due to differences in
efficiency should be exceeded by additional allowances allocated from the CASA.
It should also be noted that virtually all electrical generating utility (“EGU”)
boilers in Illinois operate pollution control equipment that reduce the overall
efficiency of a given unit. This is addressed by the allocation methodology being
based on gross electrical output rather than net electrical output.
Id
. at 5-6.
In addition, IEPA disputed SIPC’s suggestion that IEPA opposes SIPC’s heat input
position because IEPA would need to adjust allocations submitted to USEPA. According to
IEPA, SIPC has apparently misunderstood IEPA’s reasons for opposition, none of which “have
anything to do with previous submittal of allocations nor USEPA’s parallel processing. PC 15 at
6.
IEPA also disagreed with Midwest Generation’s suggestion to add a provision to the CPS
designed to correct the determination of the flue gas flow rate for air leaked in between the
mercury sorbent injection location and the stack. IEPA noted that the sorbent flow language in
the CPS matches equivalent language in the Multi-Pollutant Standard (MPS) at Section
225.233(c)(2)(D). According to IEPA, changing the CPS without likewise changing the MPS
would be “inappropriate and unfair to those sources planning to make use of the MPS.” PC 15 at
7. Moreover, continued IEPA, Midwest Generation “has only brought this issue to the Illinois
EPA’s attention one week prior to the end of first notice comment period.”
Id
. at 8. IEPA stated
therefore that it has not had an opportunity to properly review “the implications of such a
change.”
Id
. IEPA maintained that Midwest Generation’s proposal is a “last-minute
modification with unforeseeable consequences.”
Id
.

 
29
Lastly, IEPA proposed a number of clarifications and corrections to the first-notice rule
language. According to IEPA, the proposed changes are of four types: (1) changed dates within
the CAIR rule to avoid retroactive application; (2) changes based on comments received from
USEPA; (3) previously proposed amendments that were inadvertently omitted from first notice;
and (4) “some typos that need correction and some clarifications that need to be made.” PC 15 at
7; see also PC 15 at 7-34, Attachments.
Public Comment 16: Zion
Zion focused on two elements of the rule as proposed at first notice: fuel-weighting, and
the CASA. Zion contended that “the Board has failed to adequately address or reasonably
incorporate comments about” these issues into the proposed rule. PC 16 at 1.
Fuel-Weighting
The first-notice proposed rule included the fuel-weighting factor recommended by IEPA:
1.0 for coal-fired units, 0.6 for oil fired units, and 0.4 for gas-fired units. This is identical to the
federal CAIR model rule.
While still maintaining that fuel neutrality is viable, Zion urged the Board to amend
Sections 225.435, 225.445, 225.535, and 225.545 by adopting Zion’s previously-recommended
compromise alternative fuel-weighting factor of 0.7 for both gas-fired and oil fired units. PC 16
at 2. Zion suggested that IEPA rejection of Zion’s positions has two bases, neither of which can
withstand scrutiny.
IEPA’s first basis, according to Zion, is that because coal-fired sources emit higher rates
of NO
x
and SO
2
, reductions at these sources will have higher benefits, so that these sources are
more likely to be controlled. PC 16 at 3, citing PC 5 at 4-5. Zion believed that this basis may
sound more logically accurate than is the case. Zion opined that the current allocation of
allotments operates as an “emission limit” that results in a less stringent “emission limit” for
coal-fired units at the expense of gas and oil-fired units. Zion calculated that as compared to a
fuel-neutral allotment approach, under the current proposal, there are approximately 10% more
allowances for coal-fired units, while gas-fired units would receive 56% fewer allowances and
oil-fired units 34% fewer allowances. PC 16 at 3-4.
Zion suggested that under a cap and trade program such as CAIR, unit owners compare
the cost of installing and operating controls versus purchasing allowances. Rather than
increasing controls of coal-fired units, Zion predicted that:
by reducing the gap between allocations and actual emissions for coal fired units, the
Proposed Rule will have just the opposite effect—it will create a disincentive to
install controls and reduce the financial incentive for units with existing controls to
increase their reduction capabilities and “over-control”(footnote omitted). PC 16 at 4-5.

30
Zion pointed to IEPA’s experience with its own fuel-neutral NO
x
Budget Trading
Program as an example both of a “highly successful method of achieving reductions,” and of
how as:
control installations have allowed companies to over-control and generate excess
allowance, the cost of compliance via the ‘purchase’ [of allocations] route has
been significantly reduced, thus making it a more attractive option than installing
new or enhancing existing emission control. PC 16 at 5.
Zion concluded that adoption of the proposed rule would reduce the largest emitters’ incentive to
install controls on their most emitting units.
Id.
at 6.
IEPA’s second basis, Zion related, is that the State’s economic analysis found the NO
x
policy to be economically reasonable based upon fuel-weighting, and that deviation from it
would impact the economic analysis of the proposal. PC 16 at 6. In this context, IEPA noted
that the fuel-weighting factors proposed are identical to those in the federal CAIR model rule.
Id
. at 3. Zion believed this basis is faulty as well. According to Zion, IEPA’s economic analysis
“has been shown during the public hearing process to fail to stand up to scrutiny.”
Id.
at 6. Zion
also concluded that using the federal CAIR fuel-weighting factors does not support the proposal
because the factors’ “impact is substantially different on sources like Zion due to other elements
of the Proposed Rule that are not included in the federal CAIR model rule (
e.g.
CASA and its
size).”
Id.
Clean Air Set-Aside (CASA)
Zion maintained that the Board should reduce the size of the CASA found in Sections
225.445, 225.460, and 225.465 to more equitably address comments and the evidence in the
record. PC 16 at 6. Zion reiterated the position taken before first notice that the CASA should
be revised in two ways.
Id
.
First, Zion believed that a smaller portion of the total allowance budget should be made
available for non-emitting sources. PC 16 at 6-7. Rather than the proposed 25%, Zion suggested
a CASA set-aside of 5 to 10%, which it asserts is more in line with other states including
Minnesota.
Id.
at 7. Zion asserted that the 25% CASA “unjustifiably increases the compliance
burden on facilities that already face significant emission reduction obligations through an
artificial reduction in allowances available for allocations.”
Id
.
Second, Zion suggested that applicants for CASA be limited to electric generating units
and that non-generating sources (
e.g.
, energy efficiency projects and demand-side management
project) not be considered. PC 16 at 7. Zion maintained that allowing non-generating sources to
apply for CASA will give “unwarranted financial incentives to non-emitters that have no direct
compliance burden,” especially as economic incentives are already available.
Id
. Zion believed
that failing to restrict CASA applicants would provide even more stringent reduction obligations
for affected units.
Id
.

31
Zion maintained that the record is replete with commenters who support its position on
CASA. PC 16 at 7-8. However, Zion opined that despite the evidence in the record, IEPA
continues to reject a proposed reduction to the CASA size and the Board “seems to accept the
Agency’s positions regarding the need for the existing size of CASA.”
Id.
at 8. Zion
characterized IEPA’s position as consisting of four claims:
1.
Illinois has chosen to carve a set-aside away from the main pool to provide
incentive to various other areas to promote Illinois’ interests (
e.g.
,
pollution control upgrades for cleaner air, integrated gasification
combined cycle (IGCC) for cleaner generation, energy
efficiencies/renewable energy (EE/RE) efforts for zero emission
generation, and a small pool to undertake these projects early on) whose
individual contribution will benefit the environment;
2.
each of the CASA project categories assists Illinois EPA in their duty to
attain the National Ambient Air Quality Standard (NAAQS);
3.
results of a financial analysis of the impact, under a worst-case scenario
where the entire 30% [set-aside] was retired, showed that the reliability of
the grid would be intact and that residential and commercial electric rates
would not be greatly impacted; and
4.
the positive impacts for Illinois outweigh the concomitant detriment posed
by Illinois EPA’s choice for a 30% set-aside.
Id.
, citing PC 5 at 7.
As to IEPA’s first claim, that CASA is necessary to promote other Illinois interests, Zion
believed the position is misplaced. PC 16 at 8. Zion opined that IEPA relied upon the
Governor’s Sustainable Energy Plan to justify the large size of the CASA; however, IEPA has
acknowledged that it is not responsible for implementing the renewable portfolio standard in
Governor’s Sustainable Energy Plan.
Id.
at 8-9.
Zion also believed IEPA second claim, that the size of CASA is necessary to achieve
NAAQS, is without merit. PC 16 at 9. Zion pointed to IEPA’s testimony indicating that CASA
will not reduce NO
x
emissions in Illinois even if the entire 30% is retired.
Id
. Zion also asserted
that IEPA “admitted during the hearing that the Chicago area has already attained the 8-hour
ozone standard without the Proposed Rule.”
Id
. Zion indicated that Illinois’ return to ozone
attainment has been confirmed by two recent redesignation proposals, which were possible
without this rule.
Id
. Zion further commented that CAIR is an interstate rule and as such “local
reductions will not necessarily be tied to improvements in Illinois’ air quality or attainment
goals.”
Id
. Zion argued that, in effect, the proposed CASA will place an increased burden on
Illinois, resulting in primarily benefits, if any, in other areas.
Id
. at 9-10.
Zion reiterated that the financial analysis IEPA is relying upon to support the size of
CASA did not withstand the scrutiny of the public comment period. PC 16 at 10. Further, Zion
maintains that IEPA did not bolster the economic analysis after the attacks upon the analysis and
IEPA admitted that the analysis performed was revised before submission to the Board.
Id
.

 
32
Finally, Zion maintains that IEPA has no support in the record for its position that the
positive impacts of the 30% set-aside outweigh the concomitant detriments. PC 16 at 10. Zion
noted that IEPA has not clearly explained what the positive impacts are or whether the same
positive impacts would occur with a smaller CASA.
Id
. According to Zion, IEPA and the Board
have not fully evaluated the detriment posed by the 30% set-aside.
Id
. Zion further claimed that
the full evaluation of the detriments is lacking especially when comparing the full economic
impact on businesses in Illinois to similar businesses outside Illinois that have “far less reaching
or aggressive” CAIR standards.
Id.
PC 17: Kincaid and Dominion
Kincaid began its public comment by noting that Dominion owns and operates the 1,250
megawatt coal-fired Kincaid Generation, LLC power plant located in Kincaid, Illinois, and holds
a 50% interest in the 1,400 megawatt natural gas-fired Elwood Energy, LLC combustion turbine
plant located in Elwood, Illinois. PC 17 at 1.
According to Kincaid and Dominion, Subparts D (CAIR NO
x
Annual Trading Program)
and E (CAIR NO
x
Ozone Season Trading Program) of the first-notice rules “far exceed the
federal CAIR requirements and will competitively disadvantage Illinois businesses and
electricity ratepayers.” PC 17 at 1. Kincaid and Dominion did not support the 25% CASA of
NO
x
allowances under proposed Sections 225.455 and 225.555.
Id
. They felt that IEPA has
failed to justify that the level of the proposed set-aside is necessary from an air quality
perspective. They also believed these provisions “will significantly increase compliance costs
for Illinois sources and competitively disadvantage the state relative to surrounding states” by
denying Illinois the economic advantages of the USEPA trading program that many other
surrounding states will realize.
Id
. at 1-2.
Kincaid and Dominion further did not support the proposed withholding of allowances
from the Compliance Supplement Pool under Section 225.480 of the CAIR NO
x
Annual Trading
Program proposal. They argued that these allowances are provided in the USEPA rule to
“encourage early reductions during 2007 and 2008.” PC 17 at 2. Kincaid and Dominion noted
that Illinois included early reduction provisions in its NOx SIP Call rules:
These early reduction incentives not only provide companies added compliance
flexibility that ease the burden once the requirements take effect, but benefit the
environment as well by providing real emission reductions sooner.
Id
.
Kincaid and Dominion asserted that IEPA “should justify any ‘beyond CAIR’ NO
x
reductions with a thorough modeling demonstration.” PC 17 at 2. They felt that it is neither
reasonable nor environmentally justified to require all Illinois sources subject to CAIR to
implement “beyond CAIR” reductions “across-the-board” for the purpose of resolving “local
problems” of nonattainment.
Id
. Kincaid and Dominion urged IEPA to conduct a thorough
modeling demonstration to determine the “level of reductions that may be necessary to resolve
any residual nonattainment problems following implementation of the CAIR reductions.”
Id
.

33
According to Kincaid and Dominion, the 25% NO
x
set-aside is “unreasonably
burdensome” to Illinois generators and their customers and “has not been demonstrated to be
necessary to achieve attainment with the ambient air quality standards.” PC17 at 2. Kincaid and
Dominion quoted USEPA in stating that the program is designed “to balance the burden for
achieving attainment between regional-scale and local-scale control programs.”
Id
., citing 70
Fed. Reg. 25166 (May 12, 2005). Kincaid and Dominion did not believe it is necessary for
Illinois to have “beyond CAIR” NO
x
reductions, and instead propose “full adoption of USEPA’s
federal ‘model rule’ on the same schedule established by the USEPA.”
Id
. at 3.
Kincaid and Dominion stated that recent air quality modeling by the LADCO suggests
additional NO
x
reductions from the EGU sector, beyond the reductions expected from federal
CAIR, “will not solve the residual ozone and PM
2.5
non-attainment problem in the Chicago
area.” PC 17 at 3. According to Kincaid and Dominion:
A comprehensive attainment plan should be thoroughly researched and fully
developed that clearly and conclusively demonstrates the level of emissions
reductions needed and the source categories for which the most efficient and
effective reductions can be achieved. Only when this plan has been fully
developed will IEPA have the justification to proceed with “beyond CAIR”
reductions.
Id
.
Kincaid and Dominion argued that further EGU reductions of SO
2
and NO
x
are “unlikely
to impact PM
2.5
concentrations sufficiently to achieve attainment in any residual PM
2.5
nonattainment areas in Illinois or in other states.” PC 17 at 3. They therefore asserted that
mandated “beyond CAIR” EGU reductions of SO
2
and NO
x
“may not be necessary, cost
effective or even have any beneficial effect” on reducing monitored PM
2.5
particle
concentrations.
Id
. Kincaid and Dominion felt it is premature to require “beyond CAIR” SO
2
or
NO
x
reductions from EGUs because the “absolute value of PM
2.5
concentrations measured in the
field may not be driven by SO
2
or NO
x
reductions.”
Id
.
Kincaid and Dominion also referenced recent modeling funded by the Midwest Ozone
Group, the Illinois Environmental Regulatory Group, the Illinois Energy Association, and others,
conducted by Alpine Geophysics. This modeling used “a finer, 4 kilometer grid and 2005 as a
base year.” PC 17 at 4. Kincaid and Dominion stated that the modeling results, which they have
reviewed with LADCO staff, indicate that:
all the monitors in the 5-state (Illinois, Indiana, Wisconsin, Ohio and Michigan)
region will attain both the ozone and the PM
2.5
ambient air quality standards by
2015, when Phase 2 of the federal CAIR rules becomes effective.
Id
.
According to Kincaid and Dominion, “[i]t does not appear that further regional
reductions by the utility sector will make a significant difference in the attainment status of the
Chicago MSA.” PC 17 at 4. Instead, based on an analysis presented at an October 18, 2005
meeting of the Indiana Department of Environmental Management Utility Rules Workgroup,
further utility emission reductions “actually cause ozone levels to increase in the Chicago MSA.”
Id
. Kincaid and Dominion also pointed out that data presented at the meeting indicate that

 
34
Illinois EGU NO
x
emissions contribute approximately 4% of the ozone resulting in Chicago
nonattainment, behind ozone contributions from “Boundary Conditions” or sources outside the
5-state region (38% of the ozone from NO
x
and VOC), “Illinois On-road” or mobile sources
(26% of the ozone), and “Illinois Non-road,” “Illinois Non-EGU,” and “Indiana On-road”
sources.
Id
. Kincaid and Dominion therefore supported implementing CAIR as established by
USEPA, “and then work with sources in local nonattainment areas to determine the appropriate
mix of reductions needed to resolve remaining local nonattainment area issues.”
Id
.
BOARD SECOND-NOTICE DISCUSSION
The Board received five first-notice public comments, summarized above. In its second-
notice opinion of July 26, 2007, the Board addressed the remaining contested issues presented in
those comments. The Board then discussed amendments proposed to the rule language adopted
at first notice.
Contested Issues Analysis
The following contested issues were raised in public comment filed during the first-notice
period, though many of these issues were previously posed to the Board and addressed in the
Board’s first-notice decision: (1) determination of allocations for SIPC for 2009 – 2011; (2)
allocations based on gross electrical output instead of heat input; (3) proposal to correct for “air
in-leakage”; (4) fuel-weighting factors; (5) aspects of the CASA (size, availability, purpose,
economic impact); and (6) withholding allowances from the Compliance Supplement Pool
(CSP).
At second notice, the Board found that none of these disagreements warranted any
changes to the Board’s first-notice proposal. The Board addressed each of the issues separately.
Determination of Allocations for SIPC for 2009 - 2011
The first-notice rule for allowance trading included a “look-back” period that would be
updated on an annual basis to determine an EGU’s allowances. Although the proposal provided
for a two-year look-back period, the initial look-back period for the 2009 – 2011 control periods
uses data from the three highest control periods of 2001 through 2005. SIPC stated that during
the look-back period of 2001 – 2005, there were not three years of operation that SIPC considers
“normal” for the purposes of calculating a representative number of allocations. PC 13 at 1-2.
As the Board discussed in its first-notice opinion, the initial look-back period was
expanded from two years to five in response to concerns presented to IEPA before the proposal
was filed with the Board. Stat. at 48. When SIPC reiterated its concerns with the first-notice
proposal, IEPA responded that “the calculation methodology is fair and equal to all sources in
the program,” and that carving out a special provision for SIPC would “open the door” to all
other sources that might have similar issues. PC 15 at 4-5.
The Board recognized that each regulated entity might have factors that would affect
their number of allocations if more than just the gross electrical output or heat input data from

 
35
the look-back period were considered. Because Illinois has a fixed number of allowances, the
Board found that each source’s operating history should be treated as equally as possible. The
two-year look-back period, updated annually, also provides a means for IEPA to periodically
reevaluate the changes in operating patterns and the resulting allocations. As stated at first
notice, the short look-back period allows for the quick accounting of high and low usage years.
For these reasons, the Board declined at second notice to adopt SIPC’s recommendation.
Allocations Based on Gross Electrical Output vs. Heat Input
The first-notice proposal based allocations on converted gross electrical output. In its
latest public comment, SIPC maintained that it would prefer that allocations were based upon
heat input instead of gross electrical output because SIPC employs pollution control as part of
the boiler. PC 13 at 5. IEPA acknowledged that although operating pollution control equipment
reduces the overall efficiency of a unit, virtually all EGU boilers in Illinois are similarly affected.
PC 15 at 6.
As discussed in the Board’s second-notice opinion, IEPA’s Rory Davis testified that the
output-based allocation methodology “encourages greater efficiency from sources by allocating
based on output rather than use of fuel, adds a degree of flexibility in compliance strategies for
sources, as is true for most trading programs, and is consistent with the allocation methodology
used for the Clean Air Set-Aside.” Ag. Exh. 9 at 2. Davis explained:
Many of the categories of the CASA eligible for allowances for environmentally
beneficial practices do not include a measure of heat input, and measuring heat
input for other eligible categories would be inconsistent with the goals of the
CASA. These include zero emission electrical generation, energy efficiency
projects, clean coal technology projects, and pollution control technology
upgrades. Further, it would not promote the goals of the CASA to allocate a
greater number of CASA allowances for a greater measure of heat input. In
addition, employing an output-based allocation methodology creates a level
playing field where the production or conservation of electricity by the specified
means in the CASA is encouraged in the same manner that allowances are
allocated to affected CAIR sources.
Id
.
Although USEPA gave the states discretion in choosing their methods of allocation,
USEPA had this to say about its own methodology in a discussion referring to cogeneration
units:
The use of modified output, rather than actual heat input, as the basis of
determining allowance allocations will promote the development of cleaner more
efficient generation of both electricity and process steam . . . . This approach
neglects energy losses in the combustion turbine and generator. [US]EPA
believes that any efficiency gains made by reducing these losses will be rewarded
by [USEPA’s] approach, by resulting in greater electricity and/or steam output for
a given amount of heat input. 71 Fed. Reg. 25358 (Apr. 28, 2006).

 
36
The Board noted its appreciation that different system configurations might detract from
allowances allocated to a unit, but stated its understanding from IEPA that this affects most all
boilers in Illinois similarly: “virtually all electrical generating utility (“EGU”) boilers in Illinois
operate pollution control equipment that reduce the overall efficiency of a given unit.” PC 15 at
5-6. The Board remained convinced that using gross electrical output to determine allocations
has the benefit of encouraging efficiency and providing a compatible way to determine
allowances for CASA projects that might have no definable heat input.
Correcting for “Air In-Leakage”
Midwest Generation proposed to add a provision to Section 225.615(g)(4) of the
Combined Pollutant Standards (CPS) that it claimed would correct the determination of the flue
gas flow rate for air leaked in between the mercury sorbent injection location and the stack. PC
14 at 1. By adjusting the flue gas flow rate for air leaked in, Midwest Generation stated that less
sorbent would be wasted without diminishing the effectiveness of the treatment. Midwest
Generation estimated the average “air in-leakage” at each unit accounts for 10 to 15% of the total
flue gas flow and “air in-leakage does not contain any emissions, let alone additional
concentrations of Mercury.”
Id
. at 1-2.
As the Board discussed in its second-notice opinion, the first-notice rule contained only a
provision to correct the flue gas flow rate for the difference in gas temperatures between the
point of injection and the stack. As noted by IEPA, this provision matches the language in the
Multi-Pollutant Standard (MPS) found at Section 225.233(c)(2)(D) of Subpart B on the control
of mercury emissions from coal-fired electric generating units. PC 15 at 6. IEPA expressed
concern about changing this provision in the CPS without a corresponding change in the MPS
and further analysis on the possible consequences. PC 15 at 6.
The Board noted that although Midwest Generation stated sorbent costs are significant
and supply may be limited, it did not include an economic analysis or cost figures to quantify the
sought-after benefit. Midwest Generation’s proposal also did not illustrate the derivation of the
equations or relate the adjustment to the correction for gas temperature. The Board found that at
that point in the rulemaking process, the justification for the equations proposed by Midwest
Generation had not been adequately developed and the Board accordingly declined to adopt the
change.
Fuel-Weighting Factors
The first-notice proposal contained fuel-weighting factors for calculating a unit’s
converted gross electrical output: 1.0 for coal-fired; 0.6 for oil-fired; and 0.4 for other fuels such
as natural gas. Zion again argued that the fuel-weighting factors should be revised either to a
fuel-neutral position or to reflect a factor of 0.7 for both natural gas-fired and oil-fired units. PC
16 at 2. Zion presented the 0.7 value as representing a compromise alternative fuel-weighting
factor to close the gap between the fuel-neutral and fuel-weighted options. According to Zion,
the alternative factor is intended to provide additional consideration for reliability when natural
gas is unavailable, power demand is high, or reliability is critical.
Id
.

 
37
The Board quoted from USEPA’s discussion of fuel weighting:
[US]EPA proposed an allocation methodology based on the example allocation
methodology in the CAIR SIP model rules, which included adjustments to heat
input by fuel type, using fuel adjustment factors that are based on average historic
NO
x
emissions rates by 3 fuel types (coal, natural gas, and oil) for the years 1999-
2002. These adjustment factors are 1.0 for coal-fired units, 0.6 for oil-fired units,
and 0.4 for units fired with all other fuels (e.g., natural gas). The factors reflect
inherently different emissions rates of different fossil fuel-fired units.
***
[US]EPA believes that these adjustment factors appropriately consider the
inherently higher emissions rate of coal-fired units and the relatively greater
burden on these units to control emissions. 71 Fed. Reg. 25357 (Apr. 28, 2006).
As observed by the Board, the proposal contains fuel-weighting factors that are identical
to the federal CAIR model rule and reflect different burdens to control emissions. As stated by
USEPA, the factors are based on historic NO
x
emissions rates of which natural gas was one of
the three fuel types specifically assessed and assigned a factor of 0.4. USEPA used fuel types in
determining the state budgets. Stat. at 35. The Board found that Zion’s proposal to use a factor
of 0.7 did not appear to be based on historic emissions rates, but rather represented a mid-point
between the high 1.0 and low 0.4 factors. PC 3 at 2. Zion intended its alternative factor to
account for the burden of reliability problems with natural gas, but USEPA focused on the
burden of controlling emissions.
Coal-fired power plants represent the predominant sources of NO
x
and SO
2
in Illinois and
likewise have higher emission rates for both pollutants. As the Board observed at first and
second notice, reductions at these sources therefore will provide the greatest benefits, and the
more feasible controlling these emissions is under the rule, the more likely they are to be
controlled. Accordingly, at second notice, the Board did not modify the first-notice approach to
fuel-weighting.
Clean Air Set-Aside (CASA)
Size of the CASA.
For energy efficiency and conservation, renewable energy, and clean
technology projects, the proposal at first and second notice contained a CASA of 25% of the
federal allocations. The size of the proposed allocations reserved for the CASA continued to
concern Kincaid and Zion. Zion believed a smaller allowance budget should be made available,
suggesting 5-10% to be more comparable to other states. PC 16 at 7.
As the Board noted, IEPA’s Statement of Reasons provides that:
extensive modeling analysis has shown that Illinois will need to go significantly
beyond the CAIR NO
x
and SO
2
reductions to attain the PM
2.5
and 8-hour ozone
NAAQS.
See
, TSD 3.2. This set-aside, if unused, can be part of a larger plan to
reach attainment. Stat. at 50.

38
IEPA acknowledged that the size of the CASA would not equate to an equal amount of emission
reduction, but maintained that “it will lead to an improvement in air quality as it will encourage
more efficient and cleaner operating technologies to enter the market place.”
Id
. As IEPA
expects the demand for energy to increase, ensuring commensurate air quality improvement
requires reduced demand for energy from fossil fuel-fired plants, and an increase in renewable
energy sources.
Id
. at 51.
USEPA left the decision on using set-asides up to the states, so they may craft their
allocation approaches to meet their state-specific policy goals. 70 Fed. Reg. 25279 (May 12,
2005). This flexibility under CAIR allows Illinois to use set-asides, like CASA, as a tool to
promote energy efficiency, clean technology, and renewable energy. Stat. at 51. USEPA
explained that such tools encourage innovate approaches to generating emission reductions:
In light of the increasing incremental cost associated with stationary source
emission reductions and the difficulty of identifying additional stationary sources
of emission reduction, [US]EPA believes that it needs to encourage innovative
approaches to generating emission reductions. Consequently, [US]EPA believes
that it is appropriate and consistent with the [Clean Air] Act to allow a percentage
of the total emission reductions needed to satisfy ROP [Rate of Progress], RFP
[Reasonable Further Progress], attainment, and maintenance requirements to
come from programs that may not fully meet the traditional requirements [of
Sections 110, 172, 182, and 175A of the CAA].
Incorporating Emerging and
Voluntary Measures in a State Implementation Plan
, USEPA (Sept. 2004) at 8.
USEPA also advised that “[i]t is . . . important to encourage and reward greater application of
energy efficiency and renewable energy measures and incorporate the emission reductions that
these measures will accrue into the air quality planning process.”
Guidance on SIP Credits for
Emission Reductions from Electric-Sector Energy Efficiency and Renewable Energy Measures
,
USEPA (Aug. 5, 2004) (USEPA, Aug. 2004 Guidance) at 1.
The proposal at first and second notice sets aside percentages for four categories making
up the CASA:
Energy Efficiency and Conservation Projects/Renewable Energy Generation: 12%
Pollution Control Upgrade: 5%
Clean Coal Technology: 6%
Early Adopters: 2%
IEPA explained that a portion of the set-asides comes about from Section 9.10 of the Act
(415 ILCS 5/9.10 (2006)), which prescribes a percentage of the State’s energy production that
should come from renewable energy: 5% by 2010 and 15% by 2020. Stat. at 51. The 12%
figure is a combined value representing the renewable energy initiative of Section 9.10 coupled
with energy efficiency and conservation. This value is consistent with the USEPA
recommendation that a set-aside for the combination of EE/RE range between 5% and 15%.
Id
.
at 33. USEPA guidance suggested other types of energy projects can also be encouraged through
set-asides. USEPA, Aug. 2004 Guidance at 3-4. IEPA proposed the additional categories above,

39
adding on another 13% of the budget to encourage new air pollution controls, cleaner
technology, and early adoption of such projects. Stat. at 51.
As stated in its first-notice and second-notice opinions, the Board found that the set-
asides proposed by IEPA are appropriate. The allocations under the CASA categories work
toward addressing the Section 9.10 initiative while “encouraging a more diverse universe of
energy producers.” Stat. at 49.
Availability of the CASA.
Zion renewed its suggestion that applicants for CASA
allowances be restricted to electric-generating sources, eliminating non-generating sources (
e.g.
,
energy efficiency projects and demand-side management projects) from applying for CASA
allowances. PC 16 at 7. The restriction, Zion continued, would make more allocations available
to affected units for compliance. Without the restrictions, Zion stated that IEPA would be
offering “unwarranted financial incentives to non-emitters that have no direct compliance
burden.”
Id
. In support of these restrictions, Zion added that such efficiency and demand-side
management projects already realize economic incentives through “reductions in direct energy
costs and tax breaks.”
Id
.
As discussed in the Board’s second-notice opinion, allowing non-generating sources to
apply for CASA allowances is consistent with the approach taken with the Emission Reduction
Market System (ERMS) for volatile organic material (VOM) trading. 35 Ill. Adm. Code 205. In
part like the rules proposed for second notice, ERMS was designed to:
Implement innovative and cost-effective strategies to attain the national ambient
air quality standard (NAAQS) for ozone and to meet the requirements of the
Clean Air Act. 35 Ill. Adm. Code 205.110(a).
ERMS provides for open trading, specifically allowing “Special Participants”:
c) Special Participants
Any person may purchase ATUs [Allotment Trading Units] to retire for air
quality benefit only. Such person shall be a special participant and shall register
with the Agency prior to its first ATU purchase. Special participants will not
have Transaction Accounts in the Transaction Account database. All ATUs
purchased by special participants will be retired effective on the date of purchase
and will be listed as retired in the appropriate database. 35 Ill. Adm. Code
205.610(c).
A “Special participant” in ERMS means “any person that registers with the Agency and may
purchase and retire ATUs but not sell ATUs, as specified in Section 205.610 of this Part.” 35 Ill.
Adm. Code 205.130.
The open trading policy is the approach the State took in ERMS, an earlier example of
pollution trading. Zion did not cite to the issue of restricting trade in the federal discussion. The

40
Board found the ability for non-generators to apply for CASA allowances is consistent with the
open trading policy of ERMS at the State level and promotes energy efficiency.
Purpose of the CASA.
In criticizing the 25% CASA as “unreasonably burdensome,”
Kincaid and Dominion maintained that IEPA should justify “beyond CAIR” reductions with a
modeling demonstration to determine the level of reductions needed to resolve residual
nonattainment problems after CAIR is implemented. PC 17 at 2. Kincaid and Dominion also
stated that “beyond CAIR” reductions may not have any beneficial effect on reducing PM
2.5
.
Id
.
at 3. Kincaid and Dominion claimed that modeling conducted by Alpine Geophysics, dated
March 20, 2007, indicates that Illinois, Indiana, Wisconsin, Ohio, and Michigan will attain both
the ozone and PM
2.5
ambient air quality standards by 2015, when Phase 2 of the CAIR rules
becomes effective.
Id
. at 3-4.
As clarified by the Board in its second-notice opinion, the 25% CASA set-aside does not
equate with emissions reductions. Rather, the CASA represents a portion of the NO
x
emissions
allowances to be used for particular purposes,
i.e.
, EE/RE, pollution control upgrades, clean coal
technology, and early adopters. Accordingly, the CASA itself is not a “beyond CAIR”
reduction. That said, in IEPA’s Statement of Reasons, IEPA responded to a suggestion that set-
asides be retired only if modeling showed an air quality benefit would result. According to
IEPA, a “modeling demonstration would not be particularly instructive in this instance. The
effect of emissions reductions are incremental and no measure alone will assure attainment.”
Stat. at 52. IEPA continued by listing several other control measures that it intends to pursue
before seeking additional reductions in SO
2
or NO
x
from EGUs.
Id
.
Zion reiterated IEPA’s testimony at hearing that the proposed CASA and NUSA would
not reduce NO
x
emissions in Illinois even if the entire 30% were retired, and that the Chicago
area has already attained the 8-hour ozone standard without implementation of the proposed rule.
PC 16 at 9. Zion observed that local reductions would not necessarily result in improvements in
Illinois because CAIR is regional program, and Illinois would experience a burden from CASA
that will have primary benefits in other areas.
Id
.
Again, the Board emphasized that the allowances in the CASA are not simply being
retired. This contrasts with the Compliance Supplement Pool, discussed below. At hearing,
James R. Ross, Manager of the Division of Air Pollution Control in IEPA’s Bureau of Air,
testified in response to the question of whether the “primary purpose behind the proposal of the
CASA in its form [is] to result in reduced emissions, or was there a different purpose that was
driving the Agency’s proposal?” (Tr. at 91 (Oct. 10, 2006, a.m.):
The primary purpose was to encourage energy efficiency, renewable energy, clean
technology and early adopters, and as I stated, to the extent that those result in
additional NO
x
reductions, we would expect corresponding improvements to
public health and air quality (
id
.).
The Board further noted that neither of Illinois’ ozone nonattainment areas has been redesignated
as having attained the 8-hour ozone NAAQS. Moreover, in its Statement of Reasons, IEPA
stated that it:

41
presented modeling indicating that neither the greater Chicago nor Metro-East
nonattainment areas will attain the PM
2.5
NAAQS by the attainment dates nor will
the greater Chicago area attain the 8-hour ozone NAAQS by the attainment date.
Moreover these areas will not reach attainment in 2018, 3 ½ years after the
implementation of Phase II of the CAIR SO
2
and NO
x
trading programs.
See,
TSD 3.2. Illinois will need between 30 and 35 percent reductions of NO
x
beyond
the CAIR to achieve the current PM
2.5
NAAQS. Stat. at 51-52.
Finally, the Board found it useful to keep in mind the regional nature of CAIR, as
described by USEPA:
The [US]EPA conducted extensive air modeling to determine the extent to which
emissions from certain upwind States were impacting downwind nonattainment
areas. All States found to contribute significantly to downwind PM
2.5
[and 8-hour
ozone] nonattainment and maintenance problems are included in the CAIR region
. . . . 71 Fed. Reg. 25304 (Apr. 28. 2006).
In addition, the CAIR will improve PM
2.5
and 8-hour ozone air quality in the areas that
would remain in nonattainment for those two NAAQS after implementation of the CAIR.
Because of CAIR, the States with those remaining nonattainment areas will find it less
burdensome and less expensive to reach attainment by adopting additional local controls.
71 Fed. Reg. 25333 (Apr. 28, 2006).
Economic Impact of the CASA.
Zion expressed reservations over the reliance on the
“Analysis of Illinois NOx Budget Reductions by ICF Resource Incorporated using the Integrated
Planning Model [IPM].” PC 16 at 10. Zion associated the size of the CASA with a detrimental
economic impact to Illinois businesses when compared to businesses in other states that will be
subject to less aggressive CAIR standards.
Id
. Kincaid and Dominion followed this idea, stating
that the proposed CASA provisions will competitively disadvantage Illinois businesses and
electricity ratepayers relative to surrounding states. PC 17 at 1.
Although Zion, Kincaid, and Dominion expressed concern regarding the economic
implications of the rule, the companies did not provide for the rulemaking record a comparative
economic analysis of the predicted retail electricity rates in surrounding states to demonstrate or
quantify a competitive disadvantage for Illinois businesses or electricity ratepayers.
USEPA gave a regional perspective on the economics of the rule, stating that:
incentives provided by cap-and-trade encourage economically efficient
compliance over the entire region . . . . The economically efficient outcome will
not depend on the relative levels of individual unit allowance allocations. 71 Fed.
Reg. 25357 (Apr. 28, 2006).
As to the potential benefits to the economy from the approaches like CASA, USEPA stated:

 
42
[Energy efficiency and renewable energy] measures can save money, have other
economic benefits, reduce dependence on foreign sources of fuel, increase the
reliability of the electricity grid, enhance energy security, and, most importantly
for air quality purposes, reduce air emissions from electric generating power
plants. USEPA, Aug. 2004 Guidance at 1.
As stated at first and second notice, the Board considered the USEPA findings on CAIR NO
x
and
SO
2
control technology costs, the IPM modeling provided by IEPA, and IEPA modeling used to
determine the cost impact of CASA on Illinois electricity rates. The modeling projects that retail
electricity rates would not change, and there was a slight change in average production costs.
TSD Table 7.6. The Board found that no new information has been presented in this rulemaking
record to warrant the Board altering its first-notice finding that the proposal is economically
reasonable.
Compliance Supplement Pool (CSP)
As the Board discussed in its second-notice opinion, USEPA created a Compliance
Supplement Pool (CSP) for the first year of the CAIR program that states may elect to distribute
through early reduction credits or through direct distribution for a demonstrated hardship or
disruption in the electricity supplied to the grid. Illinois received 11,299 CAIR NO
x
allowances
in the CSP for the 2009 control period. Stat. at 31. IEPA proposed retiring the allowances in the
CSP in the interest of “working toward a timely attainment of [the 8-hour ozone and PM
2.5
]
NAAQS.” Stat. at 36;
see
proposed 35 Ill. Adm. Code 225.480.
Kincaid, Dominion, Dynegy, and SIPC did not support IEPA’s plan to withhold the
allowances from the CSP. PC 6 at 35; PC 17 at 2. Kincaid and Dominion stated that the CSP
allowances used as early reduction incentives provide compliance flexibility and “real emission
reductions sooner.” PC 17 at 2. IEPA viewed the CSP as counter-productive:
Given the difficulty that the State will face in attaining the PM
2.5
and 8-hour
ozone NAAQS, to have an additional 11,299 tons (for the annual NOx program)
emitted during the critical years that are being used to determine attainment is
counter productive. Further, the State may take SIP credit for retirement of these
allowances. Stat. at 36.
Although different than having a CSP for early reduction incentives, the Board noted that
for early adopters, the 2% CASA would provide 1,525 and 614 allowances for Phase I (2009 –
2014) NO
x
annual and ozone season trading, respectively. At second notice, the Board agreed
with IEPA that distributing the one-time allowances in the CSP for the 2009 control period
would be counter-productive to Illinois’ attainment efforts.
Rule Language Changes from First to Second Notice
In its first-notice public comment, IEPA proposed a number of “clarifications and
corrections” to the rules proposed at first notice. PC 15 at 7. IEPA further described its
proposed revisions:

 
43
a number of dates in the proposal, if left unchanged, would require retroactive
compliance. The Illinois EPA has also received a second set of comments from
USEPA and has noticed that a number of the amendments that it recommended in
its January 5, 2007, comments to the Board on the initial proposal were not
included in the first notice. In addition, there are some typos that need correction
and that some clarifications that need to be made.
Id
.
IEPA’s public comment, like the other four first-notice public comments, was filed on the
last day of the public comment period, June 25, 2007. The Board nevertheless did not receive
any motion for leave to file
instanter
a public comment in response to the IEPA-proposed
amendments. Accordingly, while contested issues have remained in this rulemaking as discussed
above, there was no opposition in the record to the specific word changes IEPA sought to make.
The Board also agreed with IEPA that these proposed changes in PC 15 were in the
nature of clarifications and corrections to the first-notice rules. The vast majority of the changes
were based on USEPA input received by IEPA. PC 15 at 7-26. Before first notice, in December
2006, USEPA provided IEPA with most of USEPA’s recommended “conforming amendments.”
PC 5 at 21; PC 15 at 7-19. On January 5, 2007, IEPA filed with the Board, as part of PC 5, these
USEPA-suggested edits, the highlights of which were discussed in the Board’s first-notice
opinion. Proposed New Clean Air Interstate Rules (CAIR) SO
2
, NO
x
Annual and NO
x
Ozone
Season Trading Programs, 35 Ill. Adm. Code 225, Subparts A, C, D, E, and F, R06-26, slip op. at
15 (Apr. 19, 2007) (CAIR First Notice). The changes, however, were inadvertently left out of
the first-notice rule text.
As SIPC pointed out, some other changes proposed by IEPA were found meritorious by
the Board in the first-notice opinion but also unintentionally omitted from the first-notice order.
PC 13 at 5-6; PC 15 at 27-28; CAIR First Notice at 14, 37;
see
Sections 225.465(b)(5)(B) and
225.565(b)(5)(B). IEPA also proposed changes to avoid any retroactive application of the rule.
For example, under the CAIR NO
x
annual trading program, for control periods 2009, 2010, and
2011, the deadline for the EGU owner or operator to submit to IEPA a statement that either gross
electrical output data or heat input data is to be used to calculate the unit’s converted gross
electrical output was revised from June 1, 2007, to September 15, 2007.
See
Section 225.435(a).
The Board found all of the changes proposed by IEPA in PC 15 appropriate and adopted
them for second notice. At the request of JCAR, the Board also made several minor language
changes to its first-notice order.
CONCLUSION
To reduce the interstate transport of SO
2
and NO
x
emissions and take steps necessary to
attain the PM
2.5
and 8-hour ozone NAAQS in the greater Chicago and Metro East/St. Louis
nonattainment areas, the Board adopts the CAIR SO
2
, CAIR NO
x
annual, and CAIR NO
x
ozone
season trading programs. The rule amends Subpart A and adds new Subparts C, D, E, and F and
Appendix A of Part 225. No substantive changes are made to the rule as proposed for second
notice. Based on this record, the Board finds that the amendments adopted today are technically

 
44
feasible and economically reasonable and will not have an adverse economic impact on the
People of Illinois.
See
415 ILCS 5/27(a), (b) (2006).
The rule will become effective on August 31, 2007. Accordingly, the State of Illinois
will be able to meet the USEPA deadline and avoid losing control of NO
x
allocations for the
2009 period. Important policy objectives underlying this rulemaking are therefore preserved,
including the CASA incentives to invest in renewable energy projects, which work toward
addressing the renewable energy initiative of Section 9.10 of the Act (415 ILCS 5/9.10 (2006)).
The Board adopts CAIR as a final rule.
ORDER
The Board adopts the following amendments to 35 Ill. Adm. Code 225 and directs the
Clerk to submit the amendments to the Secretary of State for publication in the
Illinois Register
as a final rule.
TITLE 35: ENVIRONMENTAL PROTECTION
SUBTITLE B: AIR POLLUTION
CHAPTER I: POLLUTION CONTROL BOARD
SUBCHAPTER c: EMISSION STANDARDS AND LIMITATIONS FOR STATIONARY
SOURCES
PART 225
CONTROL OF EMISSIONS FROM LARGE COMBUSTION SOURCES
SUBPART A: GENERAL PROVISIONS
Section
225.100
Severability
225.120
Abbreviations and Acronyms
225.130
Definitions
225.140
Incorporations by Reference
225.150
Commence Commercial Operation
SUBPART B: CONTROL OF MERCURY EMISSIONS FROM COAL-FIRED ELECTRIC
GENERATING UNITS
Section
225.200
Purpose
225.202
Measurement Methods
225.205
Applicability
225.210
Compliance Requirements
225.220
Clean Air Act Permit Program (CAAPP) Permit Requirements
225.230
Emission Standards for EGUs at Existing Sources

 
45
225.232
Averaging Demonstrations for Existing Sources
225.233
Multi-Pollutant Standard (MPS)
225.234
Temporary Technology-Based Standard for EGUs at Existing Sources
225.235
Units Scheduled for Permanent Shut Down
225.237
Emission Standards for New Sources with EGUs
225.238
Temporary Technology-Based Standard for New Sources with EGUs
225.240
General Monitoring and Reporting Requirements
225.250
Initial Certification and Recertification Procedures for Emissions Monitoring
225.260
Out of Control Periods for Emission Monitors
225.261
Additional Requirements to Provide Heat Input Data
225.263
Monitoring of Gross Electrical Output
225.265
Coal Analysis for Input Mercury Levels
225.270
Notifications
225.290
Recordkeeping and Reporting
225.295
Treatment of Mercury Allowances
SUBPART C: CLEAN AIR ACT INTERSTATE RULE (CAIR) SO
2
TRADING PROGRAM
Section
225.300
Purpose
225.305
Applicability
225.310
Compliance Requirements
225.315
Appeal Procedures
225.320
Permit Requirements
225.325
Trading Program
SUBPART D: CAIR NO
x
ANNUAL TRADING PROGRAM
Section
225.400
Purpose
225.405
Applicability
225.410
Compliance Requirements
225.415
Appeal Procedures
225.420
Permit Requirements
225.425
Annual Trading Budget
225.430
Timing for Annual Allocations
225.435
Methodology for Calculating Annual Allocations
225.440
Annual Allocations
225.445
New Unit Set-Aside (NUSA)
225.450
Monitoring, Recordkeeping and Reporting Requirements for Gross Electrical
Output and Useful Thermal Energy
225.455
Clean Air Set-Aside (CASA)
225.460
Energy Efficiency and Conservation, Renewable Energy, and Clean Technology
Projects
225.465
Clean Air Set-Aside (CASA) Allowances
225.470
Clean Air Set-Aside (CASA) Applications

 
46
225.475
Agency Action on Clean Air Set-Aside (CASA) Applications
225.480
Compliance Supplement Pool
SUBPART E: CAIR NO
x
OZONE SEASON TRADING PROGRAM
Section
225.500
Purpose
225.505
Applicability
225.510
Compliance Requirements
225.515
Appeal Procedures
225.520
Permit Requirements
225.525
Ozone Season Trading Budget
225.530
Timing for Ozone Season Allocations
225.535
Methodology for Calculating Ozone Season Allocations
225.540
Ozone Season Allocations
225.545
New Unit Set-Aside (NUSA)
225.550
Monitoring, Recordkeeping and Reporting Requirements for Gross Electrical
Output and Useful Thermal Energy
225.555
Clean Air Set-Aside (CASA)
225.560
Energy Efficiency and Conservation, Renewable Energy, and Clean Technology
Projects
225.565
Clean Air Set-Aside (CASA) Allowances
225.570
Clean Air Set-Aside (CASA) Applications
225.575
Agency Action on Clean Air Set-Aside (CASA) Applications
SUBPART F: COMBINED POLLUTANT STANDARDS
225.600
Purpose
225.605
Applicability
225.610
Notice of Intent
225.615
Control Technology Requirements and Emissions Standards for Mercury
225.620
Emissions Standards for NO
x
and SO
2
225.625
Control Technology Requirements for NO
x
, SO
2
, and PM Emissions
225.630
Permanent Shut-Downs
225.635
Requirements for CAIR SO
2
, CAIR NO
x
, and CAIR NO
x
Ozone Season
Allowances
225.640
Clean Air Act Requirements
225.APPENDIX A
Specified EGUs for Purposes of Subpart F (Midwest Generation’s Coal-
Fired Boilers as of July 1, 2006)
AUTHORITY: Implementing and authorized by Section 27 of the Environmental Protection Act
[415 ILCS 5/27].
SOURCE: Adopted in R06-25 at 31 Ill. Reg. 129, effective December 21, 2006; amended in
R06-26 at 31 Ill. Reg. ___________, effective August 31, 2007.

 
47
SUBPART A: GENERAL PROVISIONS
Section 225.120
Abbreviations and Acronyms
Unless otherwise specified within this Part, the abbreviations used in this Part must be the same
as those found in 35 Ill. Adm. Code 211. The following abbreviations and acronyms are used in
this Part:
Act
Environmental Protection Act [415 ILCS 5]
ACI
activated carbon injection
Agency
Illinois Environmental Protection Agency
Btu
British thermal unit
CAA
Clean Air Act [42 USC 7401 et seq.]
CAAPP
Clean Air Act Permit Program
CAIR
Clean Air Interstate Rule
CASA
Clean Air Set-Aside
CEMS
continuous emission monitoring system
CO
2
carbon dioxide
CPS
Combined Pollutant Standard
CGO
converted gross electrical output
CUTE
converted useful thermal energy
EGU
electric generating unit
ESP
electrostatic precipitator
FGD
flue gas desulfurization
GO
gross electrical output
GWh
gigawatt hour
HI
heat input
hr
hour
kg
kilogram
lb
pound
MPS
Multi-Pollutant Standard
MW
megawatt
MWe
megawatt electrical
MWh
megawatt hour
NAAQS
National Ambient Air Quality Standards
NO
x
nitrogen oxides
NUSA
New Unit Set-Aside
ORIS
Office of Regulatory Information Systems
O
2
oxygen
PM
2.5
particles less than 2.5 micrometers in diameter
RATA
relative accuracy test audit
SO
2
sulfur dioxide
SNCR
selective noncatalytic reduction
TTBS
Temporary Technology Based Standard

 
48
TCGO
total converted useful thermal energy
UTE
useful thermal energy
USEPA
United States Environmental Protection Agency
yr
year
(Source: Amended at 31 Ill. Reg. ____________, effective _______________)
Section 225.130
Definitions
The following definitions apply for the purposes of this Part. Unless otherwise defined in this
Section or a different meaning for a term is clear from its context, the terms used in this Part
have the meanings specified in 35 Ill. Adm. Code 211.
“Agency” means the Illinois Environmental Protection Agency.
[415 ILCS 5/3.105]
“Averaging demonstration” means, with regard to Subpart B of this Part, a demonstration
of compliance that is based on the combined performance of EGUs at two or more
sources.
“Base Emission Rate” means, for a group of EGUs subject to emission standards for NOx
and SO
2
pursuant to Section 225.233, the average emission rate of NOx or SO
2
from the
EGUs, in pounds per million Btu heat input, for calendar years 2003 through 2005 (or,
for seasonal NO
x
, the 2003 through 2005 ozone seasons), as determined from the data
collected and quality assured by the USEPA, pursuant to the 40 CFR 72 and 96 federal
Acid Rain and NO
x
Budget Trading Programs, for the emissions and heat input of that
group of EGUs.
“Board” means the Illinois Pollution Control Board.
[415 ILCS 5/3.130]
“Boiler” means an enclosed fossil or other fuel-fired combustion device used to produce
heat and to transfer heat to recirculating water, steam, or other medium.
“Bottoming-cycle cogeneration unit” means a cogeneration unit in which the energy
input to the unit is first used to produce useful thermal energy and at least some of the
reject heat from the useful thermal energy application or process is then used for
electricity production.
“CAIR authorized account representative” means, for the purpose of general accounts, a
responsible natural person who is authorized, in accordance with 40 CFR 96, subparts
BB, FF, BBB, FFF, BBBB, and FFFF to transfer and otherwise dispose of CAIR NO
x
,
SO
2
, and NO
x
Ozone Season allowances, as applicable, held in the CAIR NO
x
, SO
2
, and
NO
x
Ozone Season general account, and for the purpose of a CAIR NO
x
compliance
account, a CAIR SO
2
compliance account, or a CAIR NO
x
Ozone Season compliance
account, the CAIR designated representative of the source.

49
“CAIR designated representative” means, for a CAIR NO
x
source, a CAIR SO
2
source,
and a CAIR NO
x
Ozone Season source and each CAIR NO
x
unit, CAIR SO
2
unit and
CAIR NO
x
Ozone Season unit at the source, the natural person who is authorized by the
owners and operators of the source and all such units at the source, in accordance with 40
CFR 96, subparts BB, FF, BBB, FFF, BBBB, and FFFF as applicable, to represent and
legally bind each owner and operator in matters pertaining to the CAIR NO
x
Annual
Trading Program, CAIR SO
2
Trading Program, and CAIR NO
x
Ozone Season Trading
Program, as applicable. For any unit that is subject to one or more of the following
programs: CAIR NO
x
Annual Trading Program, CAIR SO
2
Trading Program, CAIR NO
x
Ozone Season Trading Program, or the federal Acid Rain Program, the designated
representative for the unit must be the same natural person for all programs applicable to
the unit.
“Coal” means any solid fuel classified as anthracite, bituminous, subbituminous, or
lignite by the American Society for Testing and Materials (ASTM) Standard
Specification for Classification of Coals by Rank D388-77, 90, 91, 95, 98a, or 99
(Reapproved 2004).
“Coal-derived fuel” means any fuel (whether in a solid, liquid or gaseous state) produced
by the mechanical, thermal, or chemical processing of coal.
“Coal-fired” means:
For purposes of Subparts B and F, or for purposes of allocating allowances under
Sections 225.435, 225.445, 225.535, and 225.545, combusting any amount of coal
or coal-derived fuel, alone or in combination with any amount of any other fuel,
during a specified year;
Except as provided above, combusting any amount of coal or coal-derived fuel,
alone or in combination with any amount of any other fuel.
“Cogeneration unit” means, for the purposes of Subparts C, D, and E,
a stationary, fossil
fuel-fired boiler or a stationary, fossil fuel-fired combustion turbine of which both of the
following conditions are true:
It uses equipment to produce electricity and useful thermal energy for industrial,
commercial, heating, or cooling purposes through the sequential use of energy;
and
It produces either of the following during the 12-month period beginning on the
date the unit first produces electricity and during any subsequent calendar year
after that in which the unit first produces electricity:
For a topping-cycle cogeneration unit, both of the following:
Useful thermal energy not less than five percent of total energy
output; and

50
Useful power that, when added to one-half of useful thermal
energy produced, is not less than 42.5 percent of total energy input,
if useful thermal energy produced is 15 percent or more of total
energy output, or not less than 45 percent of total energy input if
useful thermal energy produced is less than 15 percent of total
energy output; or
For a bottoming-cycle cogeneration unit, useful power not less than 45
percent of total energy input.
“Combined cycle system” means a system comprised of one or more combustion
turbines, heat recovery steam generators, and steam turbines configured to improve
overall efficiency of electricity generation or steam production.
“Combustion turbine” means:
An enclosed device comprising a compressor, a combustor, and a turbine and in
which the flue gas resulting from the combustion of fuel in the combustor passes
through the turbine, rotating the turbine; and
If the enclosed device described in
under the above paragraph of this definition is
combined cycle, any associated duct burner, heat recovery steam generator and
steam turbine.
“Commence commercial operation” means, for the purposes of Subparts B and F Subpart
B of this Part, with regard to an EGU that serves a generator, to have begun to produce
steam, gas, or other heated medium used to generate electricity for sale or use, including
test generation. Such date must remain the unit's date of commencement of operation
even if the EGU is subsequently modified, reconstructed or repowered. For the purposes
of Subparts C, D and E, “commence commercial operation” is as defined in Section
225.150.
“Commence construction” means, for the purposes of Section 225.460(f), 225.470,
225.560(f), and 225.570, that the owner or owner’s designee has obtained all necessary
preconstruction approvals (e.g., zoning) or permits and either has:
Begun, or caused to begin, a continuous program of actual on-site construction of
the source, to be completed within a reasonable time; or
Entered into binding agreements or contractual obligations, which cannot be
cancelled or modified without substantial loss to the owner or operator, to
undertake a program of actual construction of the source to be completed within a
reasonable time.
For purposes of this definition:

51
“Construction” shall be determined as any physical change or change in
the method of operation, including but not limited to fabrication, erection,
installation, demolition, or modification of projects eligible for CASA
allowances, as set forth in Sections 225.460 and 225.560.
“A reasonable time” shall be determined considering but not limited to the
following factors: the nature and size of the project, the extent of design
engineering, the amount of off-site preparation, whether equipment can be
fabricated or can be purchased, when the project begins (considering both
the seasonal nature of the construction activity and the existence of other
projects competing for construction labor at the same time, the place of the
environmental permit in the sequence of corporate and overall
governmental approval), and the nature of the project sponsor (e.g.,
private, public, regulated).
“Commence operation”, for purposes of Subparts C, D and E, means:
To have begun any mechanical, chemical, or electronic process, including, for the
purpose of a unit, start-up of a unit’s combustion chamber, except as provided in
40 CFR 96.105, 96.205, or 96.305, as incorporated by reference in Section
225.140.
For a unit that undergoes a physical change (other than replacement of the unit by
a unit at the same source) after the date the unit commences operation as set forth
in the first paragraph of this definition, such date will remain the date of
commencement of operation of the unit, which will continue to be treated as the
same unit.
For a unit that is replaced by a unit at the same source (e.g., repowered), after the
date the unit commences operation as set forth in the first paragraph of this
definition, such date will remain the replaced unit’s date of commencement of
operation, and the replacement unit will be treated as a separate unit with a
separate date for commencement of operation as set forth in this definition as
appropriate.
“Common stack” means a single flue through which emissions from two or more units
are exhausted.
“Compliance account” means:
For the purposes of Subparts D and E, a CAIR NO
x
Allowance Tracking System
account, established by USEPA for a CAIR NO
x
source or CAIR NO
x
Ozone
Season source pursuant to 40 CFR 96, subparts FF and FFFF in which any CAIR
NO
x
allowance or CAIR NO
x
Ozone Season allowance allocations for the CAIR
NO
x
units or CAIR NO
x
Ozone Season units at the source are initially recorded
and in which are held any CAIR NO
x
or CAIR NO
x
Ozone Season allowances

52
available for use for a control period in order to meet the source’s CAIR NO
x
or
CAIR NO
x
Ozone Season emissions limitations in accordance with Sections
225.410 and 225.510, and 40 CFR 96.154 and 96.354, as incorporated by
reference in Section 225.140. CAIR NO
x
allowances may not be used for
compliance with the CAIR NO
x
Ozone Season Trading Program and CAIR NO
x
Ozone Season allowances may not be used for compliance with the CAIR NO
x
Annual Trading Program; or
For the purposes of Subpart C, a “compliance account” means a CAIR SO
2
compliance account, established by the USEPA for a CAIR SO
2
source pursuant to
40 CFR 96, subpart FFF, in which any SO
2
units at the source are initially
recorded and in which are held any SO
2
allowances available for use for a control
period in order to meet the source’s CAIR SO
2
emissions limitations in
accordance with Section 225.310 and 40 CFR 96.254, as incorporated by
reference in Section 225.140.
“Control period” means:
For the CAIR SO
2
and NO
x
Annual Trading Programs in Subparts C and D, the
period beginning January 1 of a calendar year, except as provided in Sections
225.310(d)(3) and 225.410(d)(3), and ending on December 31 of the same year,
inclusive; or
For the CAIR NO
x
Ozone Season Trading Program in Subpart E, the period
beginning May 1 of a calendar year, except as provided in Section 225.510(d)(3),
and ending on September 30 of the same year, inclusive.
“Designated representative” means, for the purposes of Subpart B of this Part, the natural
person same as defined in 40 CFR 60.4102, and is the same natural person as the person
who is the designated representative for the CAIR trading and Acid Rain programs.
“Electric generating unit” or “EGU” means a fossil fuel-fired stationary boiler,
combustion turbine or combined cycle system that serves a generator that has a
nameplate capacity greater than 25 MWe and produces electricity for sale.
“Flue” means a conduit or duct through which gases or other matter is exhausted to the
atmosphere.
“Fossil fuel” means natural gas, petroleum, coal, or any form of solid, liquid, or gaseous
fuel derived from such material.
“Fossil fuel-fired” means the combusting of any amount of fossil fuel, alone or in
combination with any other fuel in any calendar year.
“Generator” means a device that produces electricity.

53
“Gross electrical output” means the total electrical output from an EGU before making
any deductions for energy output used in any way related to the production of energy.
For an EGU generating only electricity, the gross electrical output is the output from the
turbine/generator set.
“Heat input” means, for the purposes of Subparts C, D, and E, a specified period of time,
the product (in mmBtu/hr) of the gross calorific value of the fuel (in Btu/lb) divided by
1,000,000 Btu/mmBtu and multiplied by the fuel feed rate into a combustion device (in lb
of fuel/time), as measured, recorded and reported to USEPA by the CAIR designated
representative and determined by USEPA in accordance with 40 CFR 96, subpart HH,
HHH, or HHHH, if applicable, and excluding the heat derived from preheated
combustion air, recirculated flue gases, or exhaust from other sources.
“Higher heating value” or “HHV” means the total heat liberated per mass of fuel burned
(Btu/lb), when fuel and dry air at standard conditions undergo complete combustion and
all resultant products are brought to their standard states at standard conditions.
“Input mercury” means the mass of mercury that is contained in the coal combusted
within an EGU.
“Integrated gasification combined cycle” or “IGCC” means a coal-fired electric utility
steam generating unit that burns a synthetic gas derived from coal in a combined-cycle
gas turbine. No coal is directly burned in the unit during operation.
“Nameplate capacity” means, starting from the initial installation of a generator, the
maximum electrical generating output (in MWe) that the generator is capable of
producing on a steady-state basis and during continuous operation (when not restricted by
seasonal or other deratings) as of such installation as specified by the manufacturer of the
generator or, starting from the completion of any subsequent physical change in the
generator resulting in an increase in the maximum electrical generating output (in MWe)
that the generator is capable of producing on a steady-state basis and during continuous
operation (when not restricted by seasonal or other deratings), such increased maximum
amount as of completion as specified by the person conducting the physical change.
“Oil-fired unit” means a unit combusting fuel oil for more than 15.0 percent of the annual
heat input in a specified year and not qualifying as coal-fired.
“Output-based emission standard” means, for the purposes of Subpart B of this Part, a
maximum allowable rate of emissions of mercury per unit of gross electrical output from
an EGU.
“Potential electrical output capacity” means 33 percent of a unit’s maximum design heat
input, expressed in mmBtu/hr divided by 3.413 mmBtu/MWh, and multiplied by 8,760
hr/yr.

54
“Project sponsor” means a person or an entity, including but not limited to the owner or
operator of an EGU or a not-for-profit group, that provides the majority of funding for an
energy efficiency and conservation, renewable energy, or clean technology project as
listed in Sections 225.460 and 225.560, unless another person or entity is designated by a
written agreement as the project sponsor for the purpose of applying for NO
x
allowances
or NO
x
Ozone Season allowances from the CASA.
“Rated-energy efficiency” means the percentage of thermal energy input that is recovered
as useable energy in the form of gross electrical output, useful thermal energy, or both
that is used for heating, cooling, industrial processes, or other beneficial uses as follows:
For electric generators, rated-energy efficiency is calculated as one kilowatt hour
(3,413 Btu) of electricity divided by the unit’s design heat rate using the higher
heating value of the fuel, and expressed as a percentage.
For combined heat and power projects, rated-energy efficiency is calculated using
the following formula:
REE =
((GO + UTE)/HI)
×
100
Where:
REE =
Rated-energy efficiency, expressed as percentage.
GO
=
Gross electrical output of the system expressed in Btu/hr.
UTE =
Useful thermal output from the system that is used for
heating, cooling, industrial processes or other beneficial uses, expressed in
Btu/hr.
HI
=
Heat input, based upon the higher heating value of fuel, in
Btu/hr.
“Repowered” means, for the purposes of an EGU, replacement of a coal-fired boiler with
one of the following coal-fired technologies at the same source as the coal-fired boiler:
Atmospheric or pressurized fluidized bed combustion;
Integrated gasification combined cycle;
Magnetohydrodynamics;
Direct and indirect coal-fired turbines;
Integrated gasification fuel cells; or
As determined by the USEPA in consultation with the United States Department
of Energy, a derivative of one or more of the technologies under this definition
and any other coal-fired technology capable of controlling multiple combustion

55
emissions simultaneously with improved boiler or generation efficiency and with
significantly greater waste reduction relative to the performance of technology in
widespread commercial use as of January 1, 2005.
“Rolling 12-month basis” means, for the purposes of Subparts B and F Subpart B of this
Part, a determination made on a monthly basis from the relevant data for a particular
calendar month and the preceding 11 calendar months (total of 12 months of data), with
two exceptions. For determinations involving one EGU, calendar months in which the
EGU does not operate (zero EGU operating hours) must not be included in the
determination, and must be replaced by a preceding month or months in which the EGU
does operate, so that the determination is still based on 12 months of data. For
determinations involving two or more EGUs, calendar months in which none of the
EGUs covered by the determination operates (zero EGU operating hours) must not be
included in the determination, and must be replaced by preceding months in which at
least one of the EGUs covered by the determination does operate, so that the
determination is still based on 12 months of data.
“Total energy output” means, with respect to a cogeneration unit, the sum of useful
power and useful thermal energy produced by the cogeneration unit.
“Useful thermal energy” means, for the purpose of a cogeneration unit, the thermal
energy that is made available to an industrial or commercial process, excluding any heat
contained in condensate return or makeup water:
Used in a heating application (e.g., space heating or domestic hot water heating);
or
Used in a space cooling application (e.g., thermal energy used by an absorption
chiller).
(Source: Amended at 31 Ill. Reg. ____________, effective _______________)
Section 225.140
Incorporations by Reference
The following materials are incorporated by reference. These incorporations do not include any
later amendments or editions.
a)
40 CFR 60, 60.17, 60.45a, 60.49a(k)(1) and (p), 60.50a(h), and 60.4170 through
60.4176 (2005).
b)
40 CFR 75 (2006 2005).
c)
40 CFR 78 (2006).

56
d)
40 CFR 96, CAIR SO
2
Trading Program, subparts AAA (excluding 40 CFR
96.204 and 96.206), BBB, FFF, GGG, and HHH (2006).
e)
40 CFR 96, CAIR NO
x
Annual Trading Program, subparts AA (excluding 40
CFR 96.104, 96.105(b)(2), and 96.106), BB, FF, GG, and HH (2006).
f)
40 CFR 96, CAIR NO
x
Ozone Season Trading Program, subparts AAAA
(excluding 40 CFR 96.304, 96.305(b)(2), and 96.306), BBBB, FFFF, GGGG, and
HHHH (2006).
gc)
ASTM. The following methods from the American Society for Testing and
Materials, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken PA
19428-2959, (610) 832-9585:
1)
ASTM D388-77 (approved February 25, 1977), D388-90 (approved
March 30, 1990), D388-91a (approved April 15, 1991), D388-95
(approved January 15, 1995), D388-98a (approved September 10, 1998),
or D388-99 (approved September 10, 1999, reapproved in 2004),
Classification of Coals by Rank.
2)
ASTM D3173-03, Standard Test Method for Moisture in the Analysis
Sample of Coal and Coke (Approved April 10, 2003).
3)
ASTM D3684-01, Standard Test Method for Total Mercury in Coal by the
Oxygen Bomb Combustion/Atomic Absorption Method (Approved
October 10, 2001).
4)
ASTM D5865-04, Standard Test Method for Gross Calorific Value of
Coal and Coke (Approved April 1, 2004).
5)
ASTM D6414-01, Standard Test Method for Total Mercury in Coal and
Coal Combustion Residues by Acid Extraction or Wet Oxidation/Cold
Vapor Atomic Absorption (Approved October 10, 2001).
6)
ASTM D6784-02, Standard Test Method for Elemental, Oxidized,
Particle-Bound and Total Mercury in Flue Gas Generated from Coal-Fired
Stationary Sources (Ontario Hydro Method) (Approved April 10, 2002).
h)
Federal Energy Management Program, M&V Guidelines: Measurement and
Verification for Federal Energy Projects, US Department of Energy, Office of
Energy Efficiency and Renewable Energy, Version 2.2, DOE/GO-102000-0960
(September 2000).
(Source: Amended at 31 Ill. Reg. ____________, effective _______________)

57
Section 225.150
Commence Commercial Operation
Commence commercial operation means, for the purposes of Subparts C, D and E, with regard to
a unit:
a)
To have begun to produce steam, gas, or other heated medium used to
generate electricity for sale or use, including test generation, except as
provided in 40 CFR 96.105, 96.205, or 96.305, as incorporated by
reference in Section 225.140.
1)
For a unit that is a CAIR SO
2
unit, CAIR NO
x
unit, or a CAIR NO
x
Ozone Season unit pursuant to Sections 225.305, 225.405, and
225.505, respectively, on the date the unit commences commercial
operation on the later of November 15, 1990 or the date the unit
commences commercial operation as defined in subsection (a) of
this Section and that subsequently undergoes a physical change
(other than replacement of the unit by a unit at the same source),
such date will remain the unit’s date of commencement of
commercial operation, which will continue to be treated as the
same unit.
2)
For a unit that is a CAIR SO
2
unit, CAIR NO
x
unit, or a CAIR NO
x
Ozone Season unit pursuant to Sections 225.305, 225.405, and
225.505, respectively, on the later of November 15, 1990 or the
date the unit commences commercial operation as defined in
subsection (a) of this Section and that is subsequently replaced by
a unit at the same source (e.g., repowered), such date will remain
the replaced unit’s date of commencement of commercial
operation, and the replacement unit will be treated as a separate
unit with a separate date for commencement of commercial
operation as defined in subsection (a) or (b) of this Section as
appropriate.
b)
Notwithstanding subsection (a) of this Section and except as provided in
40 CFR 96.105, 96.205, or 96.305 for a unit that is not a CAIR SO
2
unit,
CAIR NO
x
unit, or a CAIR NO
x
Ozone Season unit pursuant to Section
225.305, 225.405, or 225.505, respectively, on the later of November 15,
1990 or the date the unit commences commercial operation as defined in
subsection (a) of this Section, the unit’s date for commencement of
commercial operation will be the date on which the unit becomes a CAIR
SO
2
unit, CAIR NO
x
unit, or CAIR NO
x
Ozone Season unit pursuant to
Section 225.305, 225.405, or 225.505, respectively.
1)
For a unit with a date for commencement of commercial operation
as defined in subsection (b) of this Section and that subsequently
undergoes a physical change (other than replacement of the unit by

58
a unit at the same source), such date will remain the unit’s date of
commencement of commercial operation, which shall continue to
be treated as the same unit.
2)
For a unit with a date for commencement of commercial operation
as defined in subsection (b) of this Section and that is subsequently
replaced by a unit at the same source (e.g., repowered), such date
will remain the replaced unit’s date of commencement of
commercial operation, and the replacement unit will be treated as a
separate unit with a separate date for commencement of
commercial operation as defined in subsection (a) or (b) of this
Section as appropriate.
(Source: Added at 31 Ill. Reg. _________, effective _____________)
SUBPART C: CLEAN AIR ACT INTERSTATE RULE (CAIR) SO
2
TRADING PROGRAM
Section 225.300
Purpose
The purpose of this Subpart C is to control the emissions of sulfur dioxide (SO
2
) from EGUs
annually by implementing the CAIR SO
2
Trading Program pursuant to 40 CFR 96, as
incorporated by reference in Section 225.140.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.305
Applicability
a)
Except as provided in subsections (b)(1), (b)(3), and (b)(4) of this Section:
1)
The following units are CAIR SO
2
units, and any source that includes one
or more such units is a CAIR SO
2
source subject to the requirements of
this Subpart C: any stationary, fossil-fuel-fired boiler or stationary, fossil-
fuel-fired combustion turbine serving at any time, since the later of
November 15, 1990 or the start-up of the unit’s combustion chamber, a
generator with nameplate capacity of more than 25 MWe producing
electricity for sale.
2)
If a stationary boiler or stationary combustion turbine that, pursuant to
subsection (a)(1) of this Section, is not a CAIR SO
2
unit begins to combust
fossil fuel or to serve a generator with nameplate capacity of more than 25
MWe producing electricity for sale, the unit will become a CAIR SO
2
unit
as provided in subsection (a)(1) of this Section on the first date on which it
both combusts fossil fuel and serves such generator.

59
b)
The units that meet the requirements set forth in subsections (b)(1), (b)(3), and
(b)(4) of this Section will not be CAIR SO
2
units and units that meet the
requirements of subsections (b)(2) and (b)(5) of this Section are CAIR SO
2
units:
1)
Any unit that would otherwise be classified as a CAIR SO
2
unit pursuant
to subsection (a)(1) or (a)(2) of this Section and:
A)
Qualifies as a cogeneration unit during the 12-month period
starting on the date the unit first produces electricity and continues
to qualify as a cogeneration unit; and
B)
Does not serve at any time, since the later of November 15, 1990
or the start-up of the unit’s combustion chamber, a generator with
nameplate capacity of more than 25 MWe supplying any calendar
year more than one-third of the unit’s potential electric output
capacity or 219,000 MWh, whichever is greater, to any utility
power distribution for sale.
2)
If a unit qualifies as a cogeneration unit during the 12-month period
starting on the date the unit first produces electricity and meets the
requirements of subsection (b)(1) of this Section for at least one calendar
year, but subsequently no longer meets all such requirements, the unit
shall become a CAIR SO
2
unit starting on the earlier of January 1 after the
first calendar year during which the unit no longer qualifies as a
cogeneration unit or January 1 after the first calendar year during which
the unit no longer meets the requirements of subsection (b)(1)(B) of this
Section.
3)
Any unit that would otherwise be classified as a CAIR SO
2
unit pursuant
to subsection (a)(1) or (a)(2) of this Section commencing operation before
January 1, 1985 and:
A)
Qualifies as a solid waste incineration unit; and
B)
Has an average annual fuel consumption of non-fossil fuel for
1985-1987 exceeding 80 percent (on a Btu basis) and an average
annual fuel consumption of non-fossil fuel for any three
consecutive calendar years after 1990 exceeding 80 percent (on a
Btu basis).
4)
Any unit that would otherwise be classified as a CAIR SO
2
unit under
subsection (a)(1) or (a)(2) of this Section commencing operation on or
after January 1, 1985 and:
A)
Qualifies as a solid waste incineration unit; and

60
B)
Has an average annual fuel consumption of non-fossil fuel the first
three years of operation exceeding 80 percent (on a Btu basis) and
an average annual fuel consumption of non-fossil fuel for any three
consecutive calendar years after 1990 exceeding 80 percent (on a
Btu basis).
5)
If a unit qualifies as a solid waste incineration unit and meets the
requirements of subsection (b)(3) or (b)(4) of this Section for at least three
consecutive years, but subsequently no longer meets all such
requirements, the unit shall become a CAIR SO2 unit starting on the
earlier of January 1 after the first three consecutive calendar years after
1990 for which the unit has an average annual fuel consumption of 20
percent or more.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.310
Compliance Requirements
a)
The designated representative of a CAIR SO
2
unit must comply with the
requirements of the CAIR SO
2
Trading Program for Illinois as set forth in this
Subpart C and 40 CFR 96, subpart AAA (CAIR SO
2
Trading Program General
Provisions, excluding 40 CFR 96.204, and 96.206); 40 CFR 96, subpart BBB
(CAIR Designated Representative for CAIR SO
2
Sources); 40 CFR 96, subpart
FFF (CAIR SO
2
Allowance Tracking System); 40 CFR 96, subpart GGG (CAIR
SO
2
Allowance Transfers); and 40 CFR 96, subpart HHH (Monitoring and
Reporting); as incorporated by reference in Section 225.140 .
b)
Permit requirements:
1)
The owner or operator of each source with one or more CAIR SO
2
units at
the source must apply for a permit issued by the Agency with federally
enforceable conditions covering the CAIR SO
2
Trading Program (“CAIR
permit”) that complies with the requirements of Section 225.320 (Permit
Requirements).
2)
The owner or operator of each CAIR SO
2
source and each CAIR SO
2
unit
at the source must operate the CAIR SO
2
unit in compliance with its CAIR
permit.
c)
Monitoring requirements:
1)
The owner or operator of each CAIR SO
2
source and each CAIR SO
2
unit
at the source must comply with the monitoring, reporting and
recordkeeping requirements of 40 CFR 96, subpart HHH. The CAIR

61
designated representative of each CAIR SO
2
source and each CAIR SO
2
unit at the CAIR SO
2
source must comply with those sections of the
monitoring, reporting and recordkeeping requirements of 40 CFR 96,
subpart HHH, applicable to the CAIR designated representative.
2)
The compliance of each CAIR SO
2
source with the emissions limitation
pursuant to subsection (d) of this Section will be determined by the
emissions measurements recorded and reported in accordance with 40
CFR 96, subpart HHH and 40 CFR 75.
d)
Emission requirements:
1)
By the allowance transfer deadline, midnight of March 1, 2011, and by
midnight of March 1 of each subsequent year if March 1 is a business day,
the owner or operator of each CAIR SO
2
source and each CAIR SO
2
unit
at the source must hold a tonnage equivalent in CAIR SO
2
allowances
available for compliance deductions pursuant to 40 CFR 96.254(a) and (b)
in the CAIR SO
2
source’s CAIR SO
2
compliance account. If March 1 is
not a business day, the allowance transfer deadline means by midnight of
the first business day thereafter. The number of allowances held on the
allowance transfer deadline may not be less than the total tonnage
equivalent of the tons of SO
2
emissions for the control period from all
CAIR SO
2
units at the CAIR SO
2
source, as determined in accordance
with 40 CFR 96, subpart HHH.
2)
Each ton of excess emissions of SO
2
emitted by a CAIR SO
2
source for
each day of a control period, starting in 2010 will constitute a separate
violation of this Subpart C, the Clean Air Act, and the Act.
3)
Each CAIR SO
2
unit will be subject to the requirements of subsection
(d)(1) of this Section for the control period starting on the later of January
1, 2010 or the deadline for meeting the unit’s monitoring certification
requirements pursuant to 40 CFR 96.270(b)(1) or (2) and for each control
period thereafter.
4)
CAIR SO
2
allowances must be held in, deducted from, or transferred into
or among allowance accounts in accordance with this Subpart and 40 CFR
96, subparts FFF and GGG.
5)
In order to comply with the requirements of subsection (d)(1) of this
Section, a CAIR SO
2
allowance may not be deducted for compliance
according to subsection (d)(1) of this Section for a control period in a
calendar year before the year for which the allowance is allocated.
6)
A CAIR SO
2
allowance is a limited authorization to emit SO
2
in
accordance with the CAIR SO
2
Trading Program. No provision of the

62
CAIR SO
2
Trading Program, the CAIR permit application, the CAIR
permit, or a retired unit exemption pursuant to 40 CFR 96.205, and no
provision of law, will be construed to limit the authority of the United
States or the State to terminate or limit this authorization.
7)
A CAIR SO
2
allowance does not constitute a property right.
8)
Upon recordation by USEPA pursuant to 40 CFR 96 subpart FFF or
subpart GGG, every allocation, transfer, or deduction of a CAIR SO
2
allowance to or from a CAIR SO
2
source’s compliance account is deemed
to amend automatically, and become a part of, any CAIR permit of the
CAIR SO
2
source. This automatic amendment of the CAIR permit will be
deemed an operation of law and will not require any further review.
e)
Recordkeeping and reporting requirements:
1)
Unless otherwise provided, the owner or operator of the CAIR SO
2
source
and each CAIR SO
2
unit at the source must keep on site at the source each
of the documents listed in subsections (e)(1)(A) through (e)(1)(D) of this
Section for a period of five years from the date the document is created.
This period may be extended for cause, at any time prior to the end of five
years, in writing by the Agency or USEPA.
A)
The certificate of representation for the CAIR designated
representative for the source and each CAIR SO
2
unit at the source,
all documents that demonstrate the truth of the statements in the
certificate of representation, provided that the certificate and
documents must be retained on site at the source beyond such five-
year period until the documents are superseded because of the
submission of a new certificate of representation, pursuant to 40
CFR 96.213, changing the CAIR designated representative.
B)
All emissions monitoring information, in accordance with 40 CFR
96, subpart HHH.
C)
Copies of all reports, compliance certifications, and other
submissions and all records made or required pursuant to the CAIR
SO
2
Trading Program or documents necessary to demonstrate
compliance with the requirements of the CAIR SO
2
Trading
Program or with the requirements of this Subpart C.
D)
Copies of all documents used to complete a CAIR permit
application and any other submission or documents used to
demonstrate compliance pursuant to the CAIR SO
2
Trading
Program.

63
2)
The CAIR designated representative of a CAIR SO
2
source and each
CAIR SO
2
unit at the source must submit to the Agency and USEPA the
reports and compliance certifications required pursuant to the CAIR SO
2
Trading Program, including those pursuant to 40 CFR 96, subpart HHH.
f)
Liability:
1)
No revision of a permit for a CAIR SO
2
unit may excuse any violation of
the requirements of this Subpart C or the requirements of the CAIR SO
2
Trading Program.
2)
Each CAIR SO
2
source and each CAIR SO
2
unit must meet the
requirements of the CAIR SO
2
Trading Program.
3)
Any provision of the CAIR SO
2
Trading Program that applies to a CAIR
SO
2
source (including any provision applicable to the CAIR designated
representative of a CAIR SO
2
source) will also apply to the owner and
operator of the CAIR SO
2
source and to the owner and operator of each
CAIR SO
2
unit at the source.
4)
Any provision of the CAIR SO
2
Trading Program that applies to a CAIR
SO
2
unit (including any provision applicable to the CAIR designated
representative of a CAIR SO
2
unit) will also apply to the owner and
operator of the CAIR SO
2
unit.
5)
The CAIR designated representative of a CAIR SO
2
unit that has excess
SO
2
emissions in any control period must surrender the allowances as
required for deduction pursuant to 40 CFR 96.254(d)(1).
6)
The owner or operator of a CAIR SO
2
unit that has excess SO
2
emissions
in any control period must pay any fine, penalty, or assessment or comply
with any other remedy imposed pursuant to the Act and 40 CFR
96.254(d)(2).
g)
Effect on other authorities: No provision of the CAIR SO
2
Trading Program, a
CAIR permit application, a CAIR permit, or a retired unit exemption pursuant to
40 CFR 96.205 will be construed as exempting or excluding the owner and
operator and, to the extent applicable, the CAIR designated representative of a
CAIR SO
2
source or a CAIR SO
2
unit from compliance with any other regulation
promulgated pursuant to the CAA, the Act, any State regulation or permit, or a
federally enforceable permit.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.315
Appeal Procedures

64
The appeal procedures for decisions of USEPA pursuant to the CAIR SO
2
Trading Program are
set forth in 40 CFR 78, as incorporated by reference in Section 225.140.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.320
Permit Requirements
a)
Permit requirements:
1)
The owner or operator of each source with a CAIR SO
2
unit is required to
submit:
A)
A complete permit application addressing all applicable CAIR SO
2
Trading Program requirements for a permit meeting the
requirements of this Section, applicable to each CAIR SO
2
unit at
the source. Each CAIR permit must contain elements required for
a complete CAIR permit application pursuant to subsection (b)(2)
of this Section.
B)
Any supplemental information that the Agency determines is
necessary in order to review a CAIR permit application and issue a
CAIR permit.
2)
Each CAIR permit will be issued pursuant to Section 39 or 39.5 of the
Act, must contain federally enforceable conditions addressing all
applicable CAIR SO
2
Trading Program requirements, and will be a
complete and segregable portion of the source’s entire permit pursuant to
subsection (a)(1) of this Section.
3)
No CAIR permit may be issued until the Agency and USEPA have
received a complete certificate of representation for a CAIR designated
representative or alternate designated representative pursuant to 40 CFR
96, subpart BBB, for a source and the CAIR SO
2
unit at the source.
4)
For all CAIR SO
2
units that commenced operation before July 1, 2008, the
owner or operator of the unit must submit a CAIR permit application
meeting the requirements of this Section on or before July 1, 2008.
5)
For CAIR SO
2
units that commence operation on or after July 1, 2008, and
that are and are not subject to Section 39.5 of the Act, the owner or
operator of such units must submit applications for construction and
operating permits pursuant to the requirements of Sections 39 and 39.5 of
the Act, as applicable, and 35 Ill. Adm. Code 201 and the applications

65
must specify that they are applying for CAIR permits and must address the
CAIR permit application requirements of this Section.
b)
Permit applications:
1)
Duty to apply: The owner or operator of any source with one or more
CAIR SO
2
units must submit to the Agency a CAIR permit application for
the source covering each CAIR SO
2
unit pursuant to subsection (b)(2) of
this Section by the applicable deadline in subsection (a)(4) or (a)(5) of this
Section. The owner or operator of any source with one or more CAIR SO
2
units must reapply for a CAIR permit for the source as required by this
Subpart, 35 Ill. Adm. Code 201, and, as applicable, Sections 39 and 39.5
of the Act.
2)
Information requirements for CAIR permit applications: A complete
CAIR permit application must include the following elements concerning
the source for which the application is submitted:
A)
Identification of the source, including plant name. The ORIS
(Office of Regulatory Information Systems) or facility code
assigned to the source by the Energy Information Administration
must also be included, if applicable;
B)
Identification of each CAIR SO
2
unit at the source; and
C)
The compliance requirements applicable to each CAIR SO
2
unit as
set forth in Section 225.310.
3)
An application for a CAIR permit will be treated as a modification of the
CAIR SO
2
source’s existing federally enforceable permit, if such a permit
has been issued for that CAIR SO
2
source, and will be subject to the same
procedural requirements. When the Agency issues a CAIR permit
pursuant to the requirements of this Section, it will be incorporated into
and become part of that CAIR SO
2
source’s existing federally enforceable
permit.
c)
Permit content: Each CAIR permit is deemed to incorporate automatically the
definitions and terms specified in 225.130 and 40 CFR 96.202, as incorporated by
reference in Section 225.140 and, upon recordation of USEPA under 40 CFR 96,
subparts FFF and GGG, as incorporated by reference in Section 225.140, every
allocation, transfer, or deduction of a CAIR SO
2
allowance to or from the
compliance account of the CAIR SO
2
source covered by the permit.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)

66
Section 225.325
Trading Program
a)
The CAIR SO
2
Trading Program is administered by USEPA. CAIR SO
2
allowances are issued as described by the definition for allocate in 40 CFR 96.
202, as incorporated by reference in Section 225.140. The amount of CAIR SO
2
allowances to be credited to a CAIR SO
2
source’s CAIR SO
2
Allowance Tracking
System account for a CAIR SO
2
unit will be determined in accordance with 40
CFR 96.253, as incorporated by reference in Section 225.140.
b)
A CAIR SO
2
allowance is a limited authorization to emit SO
2
during the calendar
year for which the allowance is allocated or any calendar year thereafter pursuant
to the CAIR SO
2
Trading Program as follows:
1)
For one CAIR SO
2
allowance allocated for a control period in a year
before 2010, one ton of SO
2
, except as provided for in the compliance
deductions pursuant to 40 CFR 96.254(b);
2)
For one CAIR SO
2
allowance allocated for a control period in 2010
through 2014, 0.50 ton of SO
2
, except as provided for in the compliance
deductions pursuant to 40 CFR 96.254(b); and
3)
For one CAIR SO
2
allowance allocated for a control period in 2015 or
later, 0.35 ton of SO
2
, except as provided for in the compliance deductions
pursuant to 40 CFR 96.254(b).
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
SUBPART D: CAIR NO
x
ANNUAL TRADING PROGRAM
Section 225.400
Purpose
The purpose of this Subpart D is to control the annual emissions of nitrogen oxides (NO
x
) from
EGUs by determining allocations and implementing the CAIR NO
x
Annual Trading Program.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.405
Applicability
a)
Except as provided in subsections (b)(1), (b)(3), and (b)(4) of this Section:
1)
The following units are CAIR NO
x
units, and any source that includes one
or more such units is a CAIR NO
x
source subject to the requirements of
this Subpart D: any stationary, fossil-fuel-fired boiler or stationary, fossil-
fuel-fired combustion turbine serving at any time, since the later of

67
November 15, 1990 or the start-up of the unit’s combustion chamber, a
generator with nameplate capacity of more than 25 MWe producing
electricity for sale.
2)
If a stationary boiler or stationary combustion turbine that, pursuant to
subsection (a)(1) of this Section, is not a CAIR NO
x
unit begins to
combust fossil fuel or to serve a generator with nameplate capacity of
more than 25 MWe producing electricity for sale, the unit will become a
CAIR NO
x
unit as provided in subsection (a)(1) of this Section on the first
date on which it both combusts fossil fuel and serves such generator.
b)
The units that meet the requirements set forth in subsections (b)(1), (b)(3), and
(b)(4) of this Section will not be CAIR NO
x
units and units that meet the
requirements of subsections (b)(2) and (b)(5) of this Section are CAIR NO
x
units:
1)
Any unit that would otherwise be classified as a CAIR NO
x
unit pursuant
to subsection (a)(1) or (a)(2) of this Section and:
A)
Qualifies as a cogeneration unit during the 12-month period
starting on the date the unit first produces electricity and continues
to qualify as a cogeneration unit; and
B)
Does not serve at any time, since the later of November 15, 1990
or the start-up of the unit’s combustion chamber, a generator with
nameplate capacity of more than 25 MWe supplying any calendar
year more than one-third of the unit’s potential electric output
capacity or 219,000 MWh, whichever is greater, to any utility
power distribution for sale.
2)
If a unit qualifies as a cogeneration unit during the 12-month period
starting on the date the unit first produces electricity and meets the
requirements of subsection (b)(1) of this Section for at least one calendar
year, but subsequently no longer meets all such requirements, the unit
shall become a CAIR NO
x
unit starting on the earlier of January 1 after the
first calendar year during which the unit no longer qualifies as a
cogeneration unit or January 1 after the first calendar year during which
the unit no longer meets the requirements of subsection (b)(1)(B) of this
Section.
3)
Any unit that would otherwise be classified as a CAIR NO
x
unit pursuant
to subsection (a)(1) or (a)(2) of this Section commencing operation before
January 1, 1985 and:
A)
Qualifies as a solid waste incineration unit; and

68
B)
Has an average annual fuel consumption of non-fossil fuel for
1985-1987 exceeding 80 percent (on a Btu basis) and an average
annual fuel consumption of non-fossil fuel for any three
consecutive calendar years after 1990 exceeding 80 percent (on a
Btu basis).
4)
Any unit that would otherwise be classified as a CAIR NO
x
unit under
subsection (a)(1) or (a)(2) of this Section commencing operation on or
after January 1, 1985 and:
A)
Qualifies as a solid waste incineration unit; and
B)
Has an average annual fuel consumption of non-fossil fuel the first
three years of operation exceeding 80 percent (on a Btu basis) and
an average annual fuel consumption of non-fossil fuel for any three
consecutive calendar years after 1990 exceeding 80 percent (on a
Btu basis).
5)
If a unit qualifies as a solid waste incineration unit and meets the
requirements of subsection (b)(3) or (b)(4) of this Section for at least three
consecutive years, but subsequently no longer meets all such
requirements, the unit shall become a CAIR NO
x
unit starting on the
earlier of January 1 after the first three consecutive calendar years after
1990 for which the unit has an average annual fuel consumption of 20
percent or more.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.410
Compliance Requirements
a)
The designated representative of a CAIR NO
x
unit must comply with the
requirements of the CAIR NO
x
Annual Trading Program for Illinois as set forth in
this Subpart D and 40 CFR 96, subpart AA (NO
x
Annual Trading Program
General Provisions, excluding 40 CFR 96.104, 96.105(b)(2), and 96.106); 40 CFR
96, subpart BB (CAIR Designated Representative for CAIR NO
x
Sources); 40
CFR 96, subpart FF (CAIR NO
x
Allowance Tracking System); 40 CFR 96,
subpart GG (CAIR NO
x
Allowance Transfers); and 40 CFR 96, subpart HH
(Monitoring and Reporting); as incorporated by reference in Section 225.140.
b)
Permit requirements:
1)
The designated representative of each source with one or more CAIR NO
x
units at the source must apply for a permit issued by the Agency with
federally enforceable conditions covering the CAIR NO
x
Annual Trading
Program (“CAIR permit”) that complies with the requirements of Section

69
225.420 (Permit Requirements).
2)
The owner or operator of each CAIR NO
x
source and each CAIR NO
x
unit
at the source must operate the CAIR NO
x
unit in compliance with its
CAIR permit.
c)
Monitoring requirements:
1)
The owner or operator of each CAIR NO
x
source and each CAIR NO
x
unit
at the source must comply with the monitoring, reporting, and
recordkeeping requirements of 40 CFR 96, subpart HH and Section
225.450. The CAIR designated representative of each CAIR NO
x
source
and each CAIR NO
x
unit at the CAIR NO
x
source must comply with those
sections of the monitoring, reporting and recordkeeping requirements of
40 CFR 96, subpart HH, applicable to a CAIR designated representative.
2)
The compliance of each CAIR NO
x
source with the NO
x
emissions
limitation pursuant to subsection (d) of this Section will be determined by
the emissions measurements recorded and reported in accordance with 40
CFR 96, subpart HH.
d)
Emission requirements:
1)
By the allowance transfer deadline, midnight of March 1, 2010, and by
midnight March 1 of each subsequent year if March 1 is a business day,
the owner or operator of each CAIR NO
x
source and each CAIR NO
x
unit
at the source must hold CAIR NO
x
allowances available for compliance
deductions pursuant to 40 CFR 96.154(a) in the CAIR NO
x
source’s CAIR
NO
x
compliance account. If March 1 is not a business day, the allowance
transfer deadline means by midnight of the first business day thereafter.
The number of allowances held on the allowance transfer deadline may
not be less than the tons of NO
x
emissions for the control period from all
CAIR NO
x
units at the source, as determined in accordance with 40 CFR
96, subpart HH.
2)
Each ton of excess emissions of a CAIR NO
x
source for each day in a
control period, starting in 2009, will constitute a separate violation of this
Subpart D, the Act, and the CAA.
3)
Each CAIR NO
x
unit will be subject to the requirements of subsection
(d)(1) of this Section for the control period starting on the later of January
1, 2009 or the deadline for meeting the unit’s monitoring certification
requirements pursuant to 40 CFR 96.170(b)(1) or (b)(2) and for each
control period thereafter.

70
4)
CAIR NO
x
allowances must be held in, deducted from, or transferred into
or among allowance accounts in accordance with this Subpart and 40 CFR
96, subparts FF and GG.
5)
In order to comply with the requirements of subsection (d)(1) of this
Section, a CAIR NO
x
allowance may not be deducted for compliance
according to subsection (d)(1) of this Section for a control period in a year
before the calendar year for which the allowance is allocated.
6)
A CAIR NO
x
allowance is a limited authorization to emit one ton of NO
x
in accordance with the CAIR NO
x
Trading Program. No provision of the
CAIR NO
x
Trading Program, the CAIR NO
x
permit application, the CAIR
permit, or a retired unit exemption pursuant to 40 CFR 96.105, and no
provision of law, will be construed to limit the authority of the United
States or the State to terminate or limit this authorization.
7)
A CAIR NO
x
allowance does not constitute a property right.
8)
Upon recordation by USEPA pursuant to 40 CFR 96, subpart FF or
subpart GG, every allocation, transfer, or deduction of a CAIR NO
x
allowance to or from a CAIR NO
x
source compliance account is deemed
to amend automatically, and become a part of, any CAIR NO
x
permit of
the CAIR NO
x
source. This automatic amendment of the CAIR permit
will be deemed an operation of law and will not require any further
review.
e)
Recordkeeping and reporting requirements:
1)
Unless otherwise provided, the owner or operator of the CAIR NO
x
source
and each CAIR NO
x
unit at the source must keep on site at the source each
of the documents listed in subsections (e)(1)(A) through (e)(1)(E) of this
Section for a period of five years from the date the document is created.
This period may be extended for cause, at any time prior to the end of five
years, in writing by the Agency or USEPA.
A)
The certificate of representation for the CAIR designated
representative for the source and each CAIR NO
x
unit at the
source, all documents that demonstrate the truth of the statements
in the certificate of representation, provided that the certificate and
documents must be retained on site at the source beyond such five-
year period until the documents are superseded because of the
submission of a new certificate of representation, pursuant to 40
CFR 96.113, changing the CAIR designated representative.
B)
All emissions monitoring information, in accordance with 40 CFR
96, subpart HH.

71
C)
Copies of all reports, compliance certifications, and other
submissions and all records made or required pursuant to the CAIR
NO
x
Annual Trading Program or documents necessary to
demonstrate compliance with the requirements of the CAIR NO
x
Annual Trading Program or with the requirements of this Subpart
D.
D)
Copies of all documents used to complete a CAIR NO
x
permit
application and any other submission or documents used to
demonstrate compliance pursuant to the CAIR NO
x
Annual
Trading Program.
E)
Copies of all records and logs for gross electrical output and useful
thermal energy required by Section 225.450.
2)
The CAIR designated representative of a CAIR NO
x
source and each
CAIR NO
x
unit at the source must submit to the Agency and USEPA the
reports and compliance certifications required pursuant to the CAIR NO
x
Annual Trading Program, including those pursuant to 40 CFR 96, subpart
HH.
f)
Liability:
1)
No revision of a permit for a CAIR NO
x
unit may excuse any violation of
the requirements of this Subpart D or the requirements of the CAIR NO
x
Annual Trading Program.
2)
Each CAIR NO
x
source and each CAIR NO
x
unit must meet the
requirements of the CAIR NO
x
Annual Trading Program.
3)
Any provision of the CAIR NO
x
Annual Trading Program that applies to a
CAIR NO
x
source (including any provision applicable to the CAIR
designated representative of a CAIR NO
x
source) will also apply to the
owner and operator of the CAIR NO
x
source and to the owner and
operator of each CAIR NO
x
unit at the source.
4)
Any provision of the CAIR NO
x
Annual Trading Program that applies to a
CAIR NO
x
unit (including any provision applicable to the CAIR
designated representative of a CAIR NO
x
unit) will also apply to the
owner and operator of the CAIR NO
x
unit.
5)
The CAIR designated representative of a CAIR NO
x
unit that has excess
emissions in any control period must surrender the allowances as required
for deduction pursuant to 40 CFR 96.154(d)(1).

72
6)
The owner or operator of a CAIR NO
x
unit that has excess NO
x
emissions
in any control period must pay any fine, penalty, or assessment or comply
with any other remedy imposed pursuant to the Act and 40 CFR
96.154(d)(2).
g)
Effect on other authorities: No provision of the CAIR NO
x
Annual Trading
Program, a CAIR permit application, a CAIR permit, or a retired unit exemption
pursuant to 40 CFR 96.105 will be construed as exempting or excluding the
owner and operator and, to the extent applicable, the CAIR designated
representative of a CAIR NO
x
source or a CAIR NO
x
unit from compliance with
any other regulation promulgated pursuant to the CAA, the Act, any State
regulation or permit, or a federally enforceable permit.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.415
Appeal Procedures
The appeal procedures for decisions of USEPA pursuant to the CAIR NO
x
Annual Trading
Program are set forth in 40 CFR 78, as incorporated by reference in Section 225.140.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.420
Permit Requirements
a)
Permit requirements:
1)
The owner or operator of each source with a CAIR NO
x
unit is required to
submit:
A)
A complete permit application addressing all applicable CAIR NO
x
Annual Trading Program requirements for a permit meeting the
requirements of this Section, applicable to each CAIR NO
x
unit at
the source. Each CAIR permit must contain elements required for
a complete CAIR permit application pursuant to subsection (b)(2)
of this Section.
B)
Any supplemental information that the Agency determines
necessary in order to review a CAIR permit application and issue
any CAIR permit.
2)
Each CAIR permit will be issued pursuant to Sections 39 and 39.5 of the
Act, must contain federally enforceable conditions addressing all
applicable CAIR NO
x
Annual Trading Program requirements, and will be
a complete and segregable portion of the source’s entire permit pursuant to

73
subsection (a)(1) of this Section.
3)
No CAIR permit may be issued until the Agency and USEPA have
received a complete certificate of representation for a CAIR designated
representative pursuant to 40 CFR 96, subpart BB, for the CAIR NO
x
source and the CAIR NO
x
unit at the source.
4)
For all CAIR NO
x
units that commenced operation before December 31,
2007, the owner or operator of the unit must submit a CAIR permit
application meeting the requirements of this Section on or before
December 31, 2007.
5)
For all CAIR NO
x
units that commence operation on or after December
31, 2007, the owner or operator of these units must submit applications for
construction and operating permits pursuant to the requirements of
Sections 39 and 39.5 of the Act, as applicable, and 35 Ill. Adm. Code 201
and the applications must specify that they are applying for CAIR permits
and must address the CAIR permit application requirements of this
Section.
b)
Permit applications:
1)
Duty to apply: The owner or operator of any source with one or more
CAIR NO
x
units must submit to the Agency a CAIR permit application for
the source covering each CAIR NO
x
unit pursuant to subsection (b)(2) of
this Section by the applicable deadline in subsection (a)(4) or (a)(5) of this
Section. The owner or operator of any source with one or more CAIR
NO
x
units must reapply for a CAIR permit for the source as required by
this Subpart, 35 Ill. Adm. Code 201, and, as applicable, Sections 39 and
39.5 of the Act.
2)
Information requirements for CAIR permit applications: A complete
CAIR permit application must include the following elements concerning
the source for which the application is submitted:
A)
Identification of the source, including plant name. The ORIS
(Office of Regulatory Information Systems) or facility code
assigned to the source by the Energy Information Administration
must also be included, if applicable;
B)
Identification of each CAIR NO
x
unit at the source; and
C)
The compliance requirements applicable to each CAIR NO
x
unit as
set forth in Section 225.410.
3)
An application for a CAIR permit will be treated as a modification of the

 
74
CAIR NO
x
source’s existing federally enforceable permit, if such a permit
has been issued for that source, and will be subject to the same procedural
requirements. When the Agency issues a CAIR permit pursuant to the
requirements of this Section, it will be incorporated into and become part
of that source’s existing federally enforceable permit.
c)
Permit content: Each CAIR permit is deemed to incorporate automatically the
definitions and terms specified in Section 225.130 and 40 CFR 96.102, as
incorporated by reference in Section 225.140 and, upon recordation of USEPA
under 40 CFR 96, subparts FF and GG, as incorporated by reference in Section
225.140, every allocation, transfer, or deduction of a CAIR NO
x
allowance to or
from the compliance account of the CAIR NO
x
source covered by the permit.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.425
Annual Trading Budget
The CAIR NO
x
Annual Trading budget available for allowance allocations for each control
period will be determined as follows:
a)
The total base CAIR NO
x
Annual Trading budget is 76,230 tons per control
period for the years 2009 through 2014, subject to a reduction for two set-asides,
the New Unit Set-Aside (NUSA) and the Clean Air Set-Aside (CASA). Five
percent of the budget will be allocated to the NUSA and 25 percent will be
allocated to the CASA, resulting in a CAIR NO
x
Annual Trading budget of
53,361 tons available for allocation per control period pursuant to Section
225.440. The requirements of the NUSA are set forth in Section 225.445, and the
requirements of the CASA are set forth in Sections 225.455 through 225.470.
b)
The total base CAIR NO
x
Annual Trading budget is 63,525 tons per control
period for the year 2015 and thereafter, subject to a reduction for two set-asides,
the NUSA and the CASA. Five percent of the budget will be allocated to the
NUSA and 25 percent will be allocated to the CASA, resulting in a CAIR NO
x
Annual Trading budget of 44,468 tons available for allocation per control period
pursuant to Section 225.440.
c)
If USEPA adjusts the total base CAIR NO
x
Annual Trading budget for any
reason, the Agency will adjust the base CAIR NO
x
Annual Trading budget and
the CAIR NO
x
Annual Trading budget available for allocation, accordingly.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.430
Timing for Annual Allocations

75
a)
On or before September 25, 2007, the Agency will submit to USEPA the CAIR
NO
x
allowance allocations, in accordance with Sections 225.435 and 225.440, for
the 2009, 2010, and 2011 control periods.
b)
By October 31, 2008, and October 31 of each year thereafter, the Agency will
submit to USEPA the CAIR NO
x
allowance allocations in accordance with
Sections 225.435 and 225.440, for the control period four years after the year of
the applicable deadline for submission pursuant to this Section. For example, on
October 31, 2008, the Agency will submit to USEPA the allocations for the 2012
control period.
c)
For CAIR NO
x
units that commence commercial operation on or after January 1,
2006, that have not been allocated allowances under Section 225.440 for the
applicable or any preceding control period, the Agency will allocate allowances
from the NUSA in accordance with Section 255.445. The Agency will report
these allocations to USEPA by October 31 of the applicable control period. For
example, on October 31, 2009, the Agency will submit to USEPA the allocations
from the NUSA for the 2009 control period.
d)
The Agency will allocate allowances from the CASA to energy efficiency,
renewable energy, and clean technology projects pursuant to the criteria in
Sections 225.455 through 225.470. The Agency will report these allocations to
USEPA by October 1 of each year. For example, on October 1, 2009, the Agency
will submit to USEPA the allocations from the CASA for the 2009 control period,
based on reductions made in the 2008 control period.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.435
Methodology for Calculating Annual Allocations
The Agency will calculate converted gross electrical (CGO) output, in MWh, for each CAIR
NO
x
unit that has operated during at least one calendar year prior to the calendar year in which
the Agency reports the allocations to USEPA as follows:
a)
For control periods 2009, 2010, and 2011, the owner or operator of the unit must
submit in writing to the Agency, by September 15, 2007, a statement that either
gross electrical output data or heat input data is to be used to calculate the unit’s
converted gross electrical output. The data shall be used to calculate converted
gross electrical output pursuant to either subsection (a)(1) or (a)(2) of this Section:
1)
Gross electrical output: If the unit has four or five control periods of data,
then the gross electrical output (GO) will be the average of the unit’s three
highest gross electrical outputs from the 2001, 2002, 2003, 2004, or 2005
control periods. If the unit has three or fewer control periods of gross
electrical output data, the gross electrical output will be the average of

76
those control periods for which data is available. If a generator is served
by two or more units, the gross electrical output of the generator will be
attributed to each unit in proportion to the unit’s share of the total control
period heat input of these units for the control period. The unit’s
converted gross electrical output will be calculated as follows:
A)
If the unit is coal-fired:
CGO (in MWh) = GO (in MWh)
×
1.0;
B)
If the unit is oil-fired:
CGO (in MWh) = GO (in MWh)
×
0.6; or
C)
If the unit is neither coal-fired nor oil-fired:
CGO (in MWh) = GO (in MWh)
×
0.4
2)
Heat input (HI): If the unit has four or five control periods of data, the
average of the unit’s three highest heat inputs from the 2001, 2002, 2003,
2004 or 2005 control period will be used. If the unit has three or fewer
control periods of heat input data, the heat input will be the average of
those control periods for which data is available. The unit’s converted
gross electrical output will be calculated as follows:
A)
If the unit is coal-fired:
CGO (in MWh) = HI (in mmBtu)
×
0.0967;
B)
If the unit is oil-fired:
CGO (in MWh) = HI (in mmBtu)
×
0.0580; or
C)
If the unit is neither coal-fired nor oil-fired:
CGO (in MWh) = HI (in mmBtu)
×
0.0387.
b)
For control periods 2012 and 2013, the owner or operator of the unit must submit
in writing to the Agency, by June 1, 2008, a statement that either gross electrical
output data or heat input data will be used to calculate the unit’s converted gross
electrical output. The unit’s converted gross electrical output shall be calculated
pursuant to either subsection (b)(1) or (b)(2) of this Section:
1)
Gross electrical output: The average of the unit’s two most recent years of
control period gross electrical output, if available. If a unit commences
commercial operation in the 2007 control period and does not have gross
electrical output for the 2006 control period, then the gross electrical
output from 2007 will be used. If a generator is served by two or more
units, the gross electrical output of the generator shall be attributed to each
unit in proportion to the unit’s share of the total control period heat input
of such units for the control period. The unit’s converted gross electrical
output shall be calculated as follows:

77
A)
If the unit is coal-fired:
CGO (in MWh) = GO (in MWh)
×
1.0;
B)
If the unit is oil-fired:
CGO (in MWh) = GO (in MWh)
×
0.6;
C)
If the unit is neither coal-fired nor oil-fired:
CGO (in MWh) = GO (in MWh)
×
0.4.
2)
Heat input: The average of the unit’s two most recent years of control
period heat inputs, e.g., for the 2012 control period, the average of the
unit’s heat input from the 2006 and 2007 control periods. The unit’s
converted gross electrical output shall be calculated as follows:
A)
If the unit is coal-fired:
CGO (in MWh) = HI (in mmBtu)
×
0.0967;
B)
If the unit is oil-fired:
CGO (in MWh) = HI (in mmBtu)
×
0.0580; or
C)
If the unit is neither coal-fired nor oil-fired:
CGO (in MWh) = HI (in mmBtu)
×
0.0387.
c)
For control period 2014 and thereafter, the unit’s gross electrical output will be
the average of the unit’s two most recent control period’s gross electrical output,
if available. If a unit commences commercial operation in the most recent control
period and does not have gross electrical output for two control periods, the gross
electrical output from the most recent period, e.g., if the unit commences
commercial operation in 2009 and does not have gross electrical output from
2008, gross electrical output from 2009 will be used. If a generator is served by
two or more units, the gross electrical output of the generator will be attributed to
each unit in proportion to the unit’s share of the total control period heat input of
these units for the control period. The unit’s converted gross electrical output will
be calculated as follows:
1)
If the unit is coal-fired:
CGO (in MWh) = GO (in MWh)
×
1.0;
2)
If the unit is oil-fired:
CGO (in MWh) = GO (in MWh)
×0.6;
or
3)
If the unit is neither coal-fired nor oil-fired:
CGO (in MWh) = GO (in MWh)
×
0.4.
d)
For a unit that is a combustion turbine or boiler and has equipment used to

78
produce electricity and useful thermal energy for industrial, commercial, heating,
or cooling purposes through the sequential use of energy, the Agency will add the
converted gross electrical output calculated for electricity pursuant to subsection
(a), (b), or (c) of this Section to the converted useful thermal energy (CUTE) to
determine the total converted gross electrical output for the unit (TCGO). The
Agency will determine the converted useful thermal energy by using the average
of the unit’s control period useful thermal energy for the prior two control
periods, if available. In the first year for which a unit is considered to be an
existing unit rather than a new unit, the unit’s control period useful thermal output
for the prior year will be used. The converted useful thermal energy will be
determined using the following equations:
1)
If the unit is coal-fired:
CUTE (in MWh) = UTE (in mmBtu)
×
0.2930;
2)
If the unit is oil-fired:
CUTE (in MWh) = UTE (in mmBtu)
×
0.1758; or
3)
If the unit is neither coal-fired nor oil-fired:
CUTE (in MWh) = UTE (in mmBtu)
×
0.1172.
e)
The CAIR NO
x
unit’s converted gross electrical output and converted useful
thermal energy in subsections (a)(1), (b)(1), (c), and (d) of this Section for each
control period will be based on the best available data reported or available to the
Agency for the CAIR NO
x
unit pursuant to the provisions of Section 225.450.
f)
The CAIR NO
x
unit’s heat input in subsections (a)(2) and (b)(2) of this Section
for each control period will be determined in accordance with 40 CFR 75, as
incorporated by reference in Section 225.140.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.440
Annual Allocations
a)
For the 2009 control period, and each control period thereafter, the Agency will
allocate to all CAIR NO
x
units in Illinois for which the Agency has calculated the
converted gross electrical output pursuant to Section 225.435(a), (b), or (c) or
total converted gross electrical output pursuant to Section 225.435(d), as
applicable, a total amount of CAIR NO
x
allowances equal to tons of NO
x
emissions in the CAIR NO
x
Annual Trading budget available for allocation as
determined in Section 225.425 and as adjusted to add allowances not allocated
pursuant to subsection (b) of this Section in the previous year’s allocation.
b)
The Agency will allocate CAIR NO
x
allowances to each CAIR NO
x
unit on a pro-
rata basis using the unit’s converted gross electrical output pursuant to Section

79
225.435(a), (b), or (c) or total converted gross electrical output calculated
pursuant to Section 225.435(d), as applicable, to the extent whole allowances may
be allocated. The Agency will retain any additional allowances beyond this
allocation of whole allowances for allocation pursuant to subsection (a) of this
Section in the next control period.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.445
New Unit Set-Aside (NUSA)
For the 2009 control period and each control period thereafter, the Agency will allocate CAIR
NO
x
allowances from the NUSA to CAIR NO
x
units that commenced commercial operation on
or after January 1, 2006, and do not yet have an allocation for the particular control period or any
preceding control period pursuant to Section 225.440, in accordance with the following
procedures:
a)
Beginning with the 2009 control period and each control period thereafter, the
Agency will establish a separate NUSA for each control period. Each NUSA will
be allocated CAIR NO
x
allowances equal to five percent of the amount of tons of
NO
x
emissions in the base CAIR NO
x
Annual Trading budget in Section 225.425.
b)
The CAIR designated representative of a new CAIR NO
x
unit may submit to the
Agency a request, in a format specified by the Agency, to be allocated CAIR NO
x
allowances from the NUSA, starting with the first control period after the control
period in which the new unit commences commercial operation and until the fifth
control period after the control period in which the unit commenced commercial
operation. The NUSA allowance allocation request may only be submitted after a
new unit has operated during one control period, and no later than March 1 of the
control period for which allowances from the NUSA are being requested.
c)
In a NUSA allowance allocation request pursuant to subsection (b) of this
Section, the CAIR designated representative must provide in its request
information for gross electrical output and useful thermal energy, if any, for the
new CAIR NO
x
unit for that control period.
d)
The Agency will allocate allowances from the NUSA to a new CAIR NO
x
unit
using the following procedures:
1)
For each new CAIR NO
x
unit, the unit’s gross electrical output for the
most recent control period will be used to calculate the unit’s gross
electrical output. If a generator is served by two or more units, the gross
electrical output of the generator will be attributed to each unit in
proportion to the unit’s share of the total control period heat input of these
units for the control period. The new unit’s converted gross electrical
output will be calculated as follows:

80
A)
If the unit is coal-fired:
CGO (in MWh) = GO (in MWh)
×
1.0;
B)
If the unit is oil-fired:
CGO (in MWh) = GO (in MWh)
×
0.6; or
C)
If the unit is neither coal-fired nor oil-fired:
CGO (in MWh) = GO (in MWh)
×
0.4.
2)
If the unit is a combustion turbine or boiler and has equipment used to
produce electricity and useful thermal energy for industrial, commercial,
heating, or cooling purposes through the sequential use of energy, the
Agency will add the converted gross electrical output calculated for
electricity pursuant to subsection (d)(1) of this Section to the converted
useful thermal energy to determine the total converted gross electrical
output for the unit. The Agency will determine the converted useful
thermal energy using the unit’s useful thermal energy for the most recent
control period. The converted useful thermal energy will be determined
using the following equations:
A)
If the unit is coal-fired:
CUTE (in MWh) = UTE (in mmBtu)
×
0.2930;
B)
If the unit is oil-fired:
CUTE (in MWh) = UTE (in mmBtu)
×
0.1758; or
C)
If the unit is neither coal-fired nor oil-fired:
CUTE (in MWh) = UTE (in mmBtu)
×
0.1172.
3)
The gross electrical output and useful thermal energy in subsections (d)(1)
and (d)(2) of this Section for each control period will be based on the best
available data reported or available to the Agency for the CAIR NO
x
unit
pursuant to the provisions of Section 225.450.
4)
The Agency will determine a unit’s unprorated allocation (UA
y
) using the
unit’s converted gross electrical output plus the unit’s converted useful
thermal energy, if any, calculated in subsections (d)(1) and (d)(2) of this
Section, converted to approximate NO
x
tons (the unit’s unprorated
allocation), as follows:
lbs ton
NCGO
lbs MWh
UA
y
y
2000
/
*(1.0
/
)
=
Where:

81
UA
y
=
unprorated allocation to a new
CAIR NO
x
unit.
NCGO
y
=
converted gross electrical output or total
converted gross electrical output, as
applicable, for a new CAIR NO
x
unit.
5)
The Agency will allocate CAIR NO
x
allowances from the NUSA to new
CAIR NO
x
units as follows:
A)
If the NUSA for the control period for which CAIR NO
x
allowances are requested has a number of allowances greater than
or equal to the total unprorated allocations for all new units
requesting allowances, the Agency will allocate the number of
allowances using the unprorated allocation determined for that unit
pursuant to subsection (d)(4) of this Section, to the extent that
whole allowances may be allocated. For any additional allowances
beyond this allocation of whole allowances, the Agency will retain
the additional allowances in the NUSA for allocation pursuant to
this Section in later control periods.
B)
If the NUSA for the control period for which the allowances are
requested has a number of CAIR NO
x
allowances less than the
total unprorated allocation to all new CAIR NO
x
units requesting
allocations, the Agency will allocate the available allowances for
new CAIR NO
x
units on a pro-rata basis, using the unprorated
allocation determined for that unit pursuant to subsection (d)(4) of
this Section, to the extent that whole allowances may be allocated.
For any additional allowances beyond this allocation of whole
allowances, the Agency will retain the additional allowances in the
NUSA for allocation pursuant to this Section in later control
periods.
e)
The Agency will review each NUSA allowance allocation request pursuant to
subsection (b) of this Section. The Agency will accept a NUSA allowance
allocation request only if the request meets, or is adjusted by the Agency as
necessary to meet, the requirements of this Section.
f)
By June 1 of the applicable control period, the Agency will notify each CAIR
designated representative that submitted a NUSA allowance request of the amount
of CAIR NO
x
allowances from the NUSA, if any, allocated for the control period
to the new unit covered by the request.
g)
The Agency will allocate CAIR NO
x
allowances to new units from the NUSA no
later than October 31 of the applicable control period.

82
h)
After a new CAIR NO
x
unit has operated in one control period, it becomes an
existing unit for the purposes of calculating future allocations in Section 225.440
only, and the Agency will allocate CAIR NO
x
allowances for that unit, for the
control period commencing five control periods after the control period in which
the unit commences commercial operation, pursuant to Section 225.440. For
example, if a unit commences commercial operation in 2009, in 2010, the Agency
will allocate to that unit allowances pursuant to Section 225.440 for the 2014
control period. The new CAIR NO
x
unit will continue to receive CAIR NO
x
allowances from the NUSA according to this Section until the unit is eligible to
use the CAIR NO
x
allowances allocated to the unit pursuant to Section 225.440.
i)
If, after the completion of the procedures in subsection (c) of this Section for a
control period, any unallocated CAIR NO
x
allowances remain in the NUSA for
the control period, the Agency will, at a minimum, accrue those CAIR NO
x
allowances for future control period allocations to new CAIR NO
x
units. The
Agency may from time to time elect to retire CAIR NO
x
allowances in the NUSA
that are in excess of 15,881 for the purposes of continued progress toward
attainment and maintenance of National Ambient Air Quality Standards pursuant
to the CAA.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.450
Monitoring, Recordkeeping and Reporting Requirements for Gross
Electrical Output and Useful Thermal Energy
a)
By January 1, 2008, or by the date of commencing commercial operation,
whichever is later, the owner or operator of the CAIR NO
x
unit must operate a
system for accurately measuring gross electrical output that is consistent with the
requirements of either 40 CFR 60 or 75; must measure gross electrical output in
MWh using such a system; and must record the output of the measurement system
at all times. If a generator is served by two or more units, the information to
determine each unit’s heat input for that control period must also be recorded, so
as to allow each unit’s share of the gross electrical output to be determined. If
heat input data is used, the owner or operator must comply with the applicable
provisions of 40 CFR 75, as incorporated by reference in Section 225.140.
b)
For a CAIR NO
x
unit that is a cogeneration unit, by January 1, 2008, or by the
date the CAIR NO
x
unit commences to produce useful thermal energy, whichever
is later, the owner or operator of the unit with cogeneration capabilities must
install, calibrate, maintain, and operate meters for steam flow in lbs/hr,
temperature in degrees Fahrenheit, and pressure in PSI, to measure and record the
useful thermal energy that is produced, in mmBtu/hr, on a continuous basis.
Owners and operators of a CAIR NO
x
unit that produces useful thermal energy
but uses an energy transfer medium other than steam, e.g., hot water or glycol,

83
must install, calibrate, maintain, and operate the necessary meters to measure and
record the necessary data to express the useful thermal energy produced, in
mmBtu/hr, on a continuous basis. If the CAIR NO
x
unit ceases to produce useful
thermal energy, the owner or operator may cease operation of the meters,
provided that operation of these meters must be resumed if the CAIR NO
x
unit
resumes production of useful thermal energy.
c)
The owner or operator of a CAIR NO
x
unit must either report gross electrical
output data to the Agency or comply with the applicable provisions for providing
heat input data to USEPA as follows:
1)
By September 15, 2007, the gross electrical output for control periods
2001, 2002, 2003, 2004 and 2005, if available, and the unit’s useful
thermal energy data, if applicable. If a generator is served by two or more
units, the documentation needed to determine each unit’s share of the heat
input of such units for that control period must also be submitted. If heat
input data is used, the owner or operator must comply with the applicable
provisions of 40 CFR 75, as incorporated by reference in Section 225.140.
2)
By June 1, 2008, the gross electrical output for control periods 2006 and
2007, if available, and the unit’s useful thermal energy data, if applicable.
If a generator is served by two or more units, the documentation needed to
determine each unit’s share of the heat input of such units for that control
period must also be submitted. If heat input data is used, the owner or
operator must comply with the applicable provisions of 40 CFR 75, as
incorporated by reference in Section 225.140.
d)
Beginning with 2008, the CAIR designated representative of the CAIR NO
x
unit
must submit to the Agency quarterly, by no later than April 30, July 31, October
31, and January 31 of each year, information for the CAIR NO
x
unit’s gross
electrical output, on a monthly basis for the prior quarter, and, if applicable, the
unit’s useful thermal energy for each month.
e)
The owner or operator of a CAIR NO
x
unit must maintain on-site the monitoring
plan detailing the monitoring system, maintenance of the monitoring system,
including quality assurance activities pursuant to the requirements of 40 CFR 60
or 75, as applicable, including the appropriate provisions for the measurement of
gross electrical output for the CAIR NO
x
Trading Program and, if applicable, for
new units. The monitoring plan must include, but is not limited to:
1)
A description of the system to be used for the measurement of gross
electrical output pursuant to Section 225.450(a), including a list of any
data logging devices, solid-state kW meters, rotating kW meters,
electromechanical kW meters, current transformers, transducers, potential
transformers, pressure taps, flow venturi, orifice plates, flow nozzles,
vortex meters, turbine meters, pressure transmitters, differential pressure

84
transmitters, temperature transmitters, thermocouples, resistance
temperature detectors, and any equipment or methods used to accurately
measure gross electrical output.
2)
A certification statement by the CAIR designated representative that all
components of the gross electrical output system have been tested to be
accurate within three percent and that the gross electrical output system is
accurate to within ten percent.
f)
The owner or operator of a CAIR NO
x
unit must retain records for at least five
years from the date the record is created or the data is collected under subsections
(a) and (b) of this Section, and the reports are submitted to the Agency and
USEPA in accordance with subsections (c) and (d) of this Section. The owner or
operator of a CAIR NO
x
unit must retain the monitoring plan required in
subsection (e) of this Section for at least five years from the date that it is replaced
by a new or revised monitoring plan.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.455
Clean Air Set-Aside (CASA)
a)
A project sponsor may apply for allowances from the CASA for sponsoring an
energy efficiency and conservation, renewable energy, or clean technology
project as set forth in Section 225.460 by submitting the application required by
Section 225.470.
b)
Notwithstanding subsection (a) of this Section, a project sponsor with a CAIR
NO
x
source that is out of compliance with this Subpart for a given control period
may not apply for allowances from the CASA for that control period. If a source
receives CAIR NO
x
allowances from the CASA and then is subsequently found to
have been out of compliance with this Subpart for the applicable control period or
periods, the project sponsor must restore the CAIR NO
x
allowances that it
received pursuant to its CASA request or an equivalent number of CAIR NO
x
allowances to the CASA within six months after receipt of an Agency notice that
NO
x
allowances must be restored. These allowances will be assigned to the fund
from which they were distributed.
c)
CAIR NO
x
allowances from the CASA will be allocated in accordance with the
procedures in Section 225.475.
d)
The project sponsor may submit an application that aggregates two or more
projects under a CASA project category that would individually result in less than
one allowance, but that equal at a minimum one whole allowance when
aggregated.

85
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.460
Energy Efficiency and Conservation, Renewable Energy, and Clean
Technology Projects
a)
Energy efficiency and conservation project means any of the following projects
implemented and located in Illinois:
1)
Demand side management projects that reduce overall power demand by
using less energy include:
A)
Smart building management software that more efficiently
regulates power flows.
B)
The use of or replacement to high efficiency motors, pumps,
compressors, or steam systems.
C)
Lighting retrofits.
2)
Energy efficient new building construction projects include:
A)
ENERGY STAR-qualified new home projects.
B)
Measures to reduce or conserve energy consumption beyond the
requirements of the Illinois Energy Conservation Code for
Commercial Buildings [20 ILCS 687/6-3].
C)
New residential construction projects that qualify for Energy
Efficient Tax Incentives pursuant to the Energy Policy Act of
2005, (42 USC 15801 (2005)).
3)
Supply-side energy efficiency projects include projects implemented to
improve the efficiency in electricity generation by coal-fired power plants,
and the efficiency of electrical transmission and distribution systems.
4)
Highly efficient power generation projects, such as, but not limited to,
combined cycle projects, combined heat and power, and microturbines.
To be considered a highly efficient power generation project pursuant to
this subsection (a)(4), a project must meet the following applicable
thresholds and criteria:
A)
For combined heat and power projects generating both electricity
and useful thermal energy for space, water, or industrial process
heat, a rated-energy efficiency of at least 60 percent and is not a
CAIR NO
x
unit.

86
B)
For combined cycle projects rated at greater than 0.50 MW, a
rated-energy efficiency of at least 50 percent.
C)
For microturbine projects rated at or below 0.50 MW and all other
projects, a rated-energy efficiency of at least 40 percent.
b)
Renewable energy project means any of the following projects implemented and
located in Illinois:
1)
Zero-emission electric generating projects, including wind, solar (thermal
or photovoltaic), and hydropower projects. Eligible hydropower plants are
restricted to new generators, that are not replacements of existing
generators, that commenced operation on or after January 1, 2006, and that
do not involve the significant expansion of an existing dam or the
construction of a new dam.
2)
Renewable energy units are those units that generate electricity using more
than 50 percent of the heat input, on an annual basis, from dedicated crops
grown for energy production or the capture systems for methane gas from
landfills, water treatment plants or sewage treatment plants, and organic
waste biomass, and other similar sources of non-fossil fuel energy.
Renewable energy projects do not include energy from incineration by
burning or heating of waste wood, tires, garbage, general household waste,
institutional lunchroom waste, office waste, landscape waste, or
construction or demolition debris.
c)
Clean technology project for reducing emissions from producing electricity and
useful thermal energy means any of the following projects implemented and
located in Illinois:
1)
Air pollution control equipment upgrades at existing coal-fired EGUs, as
follows: installation of flue gas desulfurization (FGD) for control of SO
2
emissions; installation of a baghouse for control of particulate matter
emissions; and installation of selective catalytic reduction (SCR), selective
non-catalytic reduction (SNCR), or other add-on control devices for
control of NO
x
emissions. For this purpose, a unit will be considered
“existing” after it has been in commercial operation for at least eight
years. Air pollution control upgrade projects do not include the addition
of low NO
x
burners, overfired air techniques or gas reburning techniques
for control of NO
x
emissions; projects involving flue gas conditioning
techniques or upgrades, or replacement of electrostatic precipitators; or
addition of an activated carbon injection or other sorbent injection system
for control of mercury.
2)
Clean coal technologies projects include:

87
A)
Integrated gasification combined cycle (IGCC) plants.
B)
Fluidized bed coal combustion that commenced operation prior to
December 31, 2006.
d)
In addition to those projects excluded in subsections (a) through (c) of this
Section, the following projects are also not energy efficiency and conservation,
renewable energy, or clean technology projects:
1)
Nuclear power projects.
2)
Projects required to meet emission standards or technology requirements
under State or federal law or regulation, except that allowances may be
allocated for:
A)
The installation of a baghouse.
B)
Projects undertaken pursuant to Section 225.233 or Subpart F.
3)
Projects used to meet the requirements of a court order or consent decree,
except that allowances may be allocated for:
A)
Emission rates or limits achieved that are lower than what is
required to meet the emission rates or limits for SO
2
or NO
x,
or for
installing a baghouse as provided for in a court order or consent
decree entered into before May 30, 2006.
B)
Projects used to meet the requirements of a court order or consent
decree entered into on or after May 30, 2006, if the court order or
consent decree does not specifically preclude such allocations.
4)
A Supplemental Environmental Project (SEP).
e)
Applications for projects implemented and located in Illinois that are not
specifically listed in subsections (a) through (c) of this Section, and that are not
specifically excluded by definition in subsections (a) through (c) of this Section or
by specific exclusion in subsection (d) of this Section, may be submitted to the
Agency. The application must designate which category or categories from those
listed in subsections (a)(1) through (c)(2)(B) of this Section best fit the proposed
project and the applicable formula pursuant to Section 225.465(b) to calculate the
number of allowances that it is requesting. The Agency will determine whether
the application is approvable based on a sufficient demonstration by the project
sponsor that the project is a new type of energy efficiency, renewable energy, or
clean technology project, similar in its effects as the projects specifically listed in
subsections (a) through (c)(2)(B) of this Section.

 
88
f)
Early adopter projects include projects that meet the criteria for any energy
efficiency and conservation, renewable energy, or clean technology projects listed
in subsections (a), (b), (c), and (e) of this Section and commence construction
between July 1, 2006 and December 31, 2012.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.465
Clean Air Set-Aside (CASA) Allowances
a)
The CAIR NO
x
allowances for the CASA for each control period will be assigned
to the following categories of projects:
Phase I
Phase II
(2009-2014) (2015 and thereafter)
1)
Energy Efficiency and Conservation/ 9149
7625
Renewable Energy
2)
Air Pollution Control Equipment
3811
3175
Upgrades
3)
Clean Coal Technology
4573
3810
4)
Early Adopters
1525
1271
b)
The following formulas must be used to determine the number of CASA
allowances that may be allocated to a project per control period:
1)
For an energy efficiency and conservation project pursuant to Section
225.460(a)(1) through (a)(4)(A), the number of allowances must be
calculated using the number of megawatt hours of electricity that was not
consumed during a control period and the following formula:
A
=
(MWh
c
)
×
(1.5 lb/MWh) / 2000 lb
Where:
A
=
The number of allowances for a particular project.
MWh
c
=
The number of megawatt hours of electricity
conserved or generated during a control period by a
project.
2)
For a zero emission electric generating project pursuant to Section
225.460(b)(1), the number of allowances must be calculated using the

89
number of megawatt hours of electricity generated during a control period
and the following formula:
A
=
(MWh
g
)
×
(2.0 lb/MWh) / 2000 lb
Where:
A
=
The number of allowances for a particular project
MWh
g
=
The number of megawatt hours of electricity
generated during a control period by a project.
3)
For a renewable energy emission unit pursuant to Section 225.460(b)(2),
the number of allowances must be calculated using the number of MWhs
of electricity generated during a control period and the following formula:
A
=
(MWh
g
)
×
(0.5 lb/MWh) / 2000 lb
Where:
A
=
The number of allowances for a particular project.
MWh
g
=
The number of MW hours of electricity generated
during a control period by a project.
4)
For an air pollution control equipment upgrade project pursuant to Section
225.460(c)(1), the number of allowances will be calculated as follows:
A)
For NO
x
or SO
2
control projects, by determining the difference in
emitted NO
x
or SO
2
per control period using the emission rate
before and after replacement or improvement, and the following
formula:
A=
(MWh
g
)
×
K
×
(ER
B
lb/MWh - ER
A
lb/MWh) / 2000 lb
Where:
A
=
The number of allowances for a particular
project.
MWh
g
=
The number of megawatt hours of electricity
generated during a control period by a
project.
K
=
The pollutant factor: for NO
x
, K= 0.1; and
for SO
2
, K = 0.05.
ER
B
=
Average NO
x
or SO
2
emission rate based on
CEMS data from the most recent two
control periods prior to the replacement or
improvement of the control equipment in
lb/MWh, unless subject to a court order

90
or consent decree. For units subject to a
court order or consent decree entered into
before May 30, 2006, ER
B
is limited to
emission rates that are lower than the
emission rate required in the consent decree
or court order. For a court order or consent
decree entered into after May 30, 2006, ER
B
is limited to the lesser of the emission rate
specified in the court order or consent
decree or the actual average emission rate
during the control period. If such limit is
not expressed in lb/MWh, the limit must be
converted into lb/MWh using a heat rate of
10 mmBtu/1 MW.
ER
A
=
Annual NO
x
or SO
2
average emission rate
for the applicable control period data based
on CEMS data in lb/MWh.
B)
For a baghouse project:
A =
(MWh
g
)
×
(Q lb/MWh) / 2000 lb
Where:
A =
The number of allowances for a
particular project.
MWh
g
=
The number of MWh of
electricity generated during a control period
or the portion of a control period that the
units were controlled by the baghouse.
Q =
1)
If a baghouse was not installed pursuant to a
consent decree or court order, Q shall equal
0.2.
2)
If a baghouse was installed pursuant to a
consent decree or court order that assigns a
Q factor, then Q equals the factor
established in the consent decree or court
order but must not exceed a factor of 0.2.
3)
If a baghouse was installed pursuant to a
consent decree or court order that does not
assign a Q factor then Q shall equal:
Q= 0.25 – (P x ER
q
)

91
Where:
P = If the most recent control period’s
average PM emission rate was based on PM
CEMS data, P equals 1.0; otherwise P = 1.1.
ER
q
= The magnitude of most recent control
period’s average PM emission rate in
lb/MWh exiting the baghouse, subject to the
following limits:
If P = 1.0, then 1/10
ER
q
2/10
If P = 1.1, then 1/11
ER
q
2/11
If the ER
q
is less than the lower limit, the
lower limit shall be used.
If ER
q
is greater than the upper limit, the
upper limit shall be used.
If ER
q
is not expressed in lb/MWh, the
number must be converted to lb/MWh using
a heat rate of 10 mmBtu/1 MW.
5)
For highly efficient power generation and clean coal technology projects:
A)
For projects other than fluidized coal combustion pursuant to
Section 225.460(a)(4)(B), (a)(4)(C), and (c)(2), the number of
allowances must be calculated using the number of MWh of
electricity the project generates during a control period and the
following formula:
A
=
(MWh
g
)
×
(1.0 lb/MWh – ER lb/MWh) / 2000 lb
Where:
A
=
The number of allowances for a particular
project.
MWh
g
=
The number of megawatt hours of electricity
generated during a control period by a
project.
ER
=
Annual average NO
x
emission rate based on
CEMS data in 1b/MWh.
B)
For fluidized bed coal combustion projects pursuant to Section
225.460 (c)(2), the number of allowances shall be calculated using
the number of gross MWh of electricity the project generates
during a control period and the following formula:

92
A
=
(MWh
g
) x (1.4 lb/MWh – ER lb/MWh) / 2000 lb
Where:
A
=
The number of allowances for a particular
project.
MWh
g
=
The number of gross MWh of electricity
generated during a control period by a
project.
ER
=
Annual NO
x
emission rate for the control
period based on CEMS data in lb/MWh.
6)
For a CASA project that commences construction before December 31,
2012, in addition to the allowances allocated pursuant to subsections
(b)(1) through (b)(5) of this Section, a project sponsor may also request
additional allowances pursuant to the early adopter project category
pursuant to Section 225.460(e) based on the following formula:
A
=
1.0 + 0.10
×
Σ
A
i
Where:
A
=
The number of allowances for a particular project as
determined in subsections (b)(1) through (b)(5) of
this Section.
A
i
=
The number of allowances as determined in
subsection (b)(1), (b)(2), (b)(3), (b)(4) or (b)(5) of
this Section for a given project.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.470
Clean Air Set-Aside (CASA) Applications
a)
A project sponsor may request allowances if the project commenced construction
on or after the dates listed in this subsection. The project sponsor may request
and be allocated allowances from more than one CASA category for a project, if
applicable.
1)
Demand side management, energy efficient new construction, and supply
side energy efficiency and conservation projects that commenced
construction on or after January 1, 2003;
2)
Fluidized bed coal combustion projects, highly efficient power generation
operations projects, or renewable energy emission units, that commenced
construction on or after January 1, 2001; and

93
3)
All other projects on or after July 1, 2006.
b)
Beginning with the 2009 control period and each control period thereafter, a
project sponsor may request allowances from the CASA. The application must be
submitted to the Agency by May 1 of the control period for which the allowances
are being requested.
c)
The allocation will be based on the electricity conserved or generated in the
control period preceding the calendar year in which the application is submitted.
To apply for a CAIR NO
x
allocation from the CASA, project sponsors must
provide the Agency with the following information:
1)
Identification of the project sponsor, including name, address, type of
organization, certification that the project sponsor has met the definition of
“project sponsor” as set forth in Section 225.130,and names of the
principals or corporate officials.
2)
The number of the CAIR NO
x
general or compliance account for the
project and the name of the associated CAIR account representative.
3)
A description of the project or projects, location, the role of the project
sponsor in the projects, and a general explanation of how the amount of
energy conserved or generated was measured, verified, and calculated, and
the number of allowances requested with the supporting calculations.
The number of allowances requested will be calculated using the
applicable formula from Section 225.470(b).
4)
Detailed information to support the request for allowances, including the
following types of documentation for the measurement and verification of
the NO
x
emissions reductions, electricity generated, or electricity
conserved using established measurement verification procedures, as
applicable. The measurement and verification required will depend on the
type of project proposed.
A)
As applicable, documentation of the project’s base and control
period conditions and resultant base and control period energy
data, using the procedures and methods included in
M&V
Guidelines: Measurement and Verification for Federal Energy
Projects,
incorporated by reference in Section 225.140, or other
method approved by the Agency. Examples include:
i)
Energy consumption and demand profiles;
ii)
Occupancy type;

94
iii)
Density and periods;
iv)
Space conditions or plant throughput for each operating
period and season. (for example, in a building this would
include the light level and color, space temperature,
humidity and ventilation);
v)
Equipment inventory, nameplate data, location, and
condition; and
vi)
Equipment operating practices (schedules and set points,
actual temperatures/pressures);
B)
Emissions data, including, if applicable, CEMS data;
C)
Information for rated-energy efficiency, including supporting
documentation and calculations; and
D)
Electricity, in MWh generated or conserved for the applicable
control period.
5)
Notwithstanding the requirements of subsection (c)(4) of this Section,
applications for fewer than five allowances may propose other reliable and
applicable methods of quantification acceptable to the Agency.
6)
Any additional information requested by the Agency to determine the
correctness of the requested number of allowances, including site
information, project specifications, supporting calculations, operating
procedures, and maintenance procedures.
7)
The following certification by the responsible official for the project
sponsor and the applicable CAIR account representative for the project:
“I am authorized to make this submission on behalf of the project sponsor
and the holder of the CAIR NO
x
general account or compliance account
for which the submission is made. I certify under penalty of law that I
have personally examined, and am familiar with, the statements and
information submitted in this application and all its attachments. Based on
my inquiry of those individuals with primary responsibility for obtaining
the information, I certify that the statements and information are to the
best of my knowledge and belief true, accurate, and complete. I am aware
that there are significant penalties for submitting false statements and
information or omitting required statements and information.”
d)
A project sponsor may request allowances from the CASA for each project for a
total number of control periods not to exceed the number of control periods listed

95
in this subsection. After a project has been allocated allowances from the CASA,
subsequent requests for the project from the project sponsor must include the
information required by subsections (c)(1), (c)(2), (c)(3) and (c)(7) of this Section,
a description of any changes, or further improvements made to the project, and
information specified in subsections (c)(5) and (c)(6) as specifically requested by
the Agency.
1)
For energy efficiency and conservation projects (except for efficient
operation and renewable energy projects), for a total of eight control
periods.
2)
For early adopter projects, for a total of ten control periods.
3)
For air pollution control equipment upgrades, for a total of 15 control
periods.
4)
For renewable energy projects, clean coal technology, and highly efficient
power generation projects, for each year that the project is in operation.
e)
A project sponsor must keep copies of all CASA applications and the
documentation used to support the application for at least five years.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.475
Agency Action on Clean Air Set-Aside (CASA) Applications
a)
By September 1, 2009 and each September 1 thereafter, the Agency will
determine the total number of allowances that are approvable for allocation to
project sponsors based upon the applications submitted pursuant to Section
225.470.
1)
The Agency will determine the number of CAIR NO
x
allowances that are
approvable based on the formulas and the criteria for these projects. The
Agency will notify a project sponsor within 90 days after receipt of an
application if the project is not approvable, the number of allowances
requested is not approvable, or additional information is needed by the
Agency to complete its review of the application.
2)
If the total number of CAIR NO
x
allowances requested for approved
projects is less than or equal to the number of CAIR NO
x
allowances in
the CASA project category, the number of allowances that are approved
will be allocated to each CAIR NO
x
compliance or general account.
3)
If more CAIR NO
x
allowances are requested than the number of CAIR
NO
x
allowances in a given CASA project category, allowances will be

96
allocated on a pro-rata basis based on the number of allowances available,
subject to further adjustment as provided for by subsection (b) of this
Section. CAIR NO
x
allowances will be allocated, transferred, or used as
whole allowances. The number of whole allowances will be determined
by rounding down for decimals less than 0.5 and rounding up for decimals
of 0.5 or greater.
b)
For control periods 2011 and thereafter:
1)
If there are, after the completion of the procedures in subsection (a) of this
Section for a control period, any CAIR NO
x
allowances not allocated to a
CASA project for the control period the remaining allowances will accrue
in each CASA project category up to twice the number of allowances that
are assigned to the project category each control period as set forth in
Section 225.465.
2)
If any allowances remain after allocations pursuant to subsection (b)(1) of
this Section, the Agency will allocate these allowances pro rata to projects
that received fewer allowances than requested, based on the number of
allowances not allocated but approved by the Agency for the project under
CASA. No project may be allocated more allowances than approved by
the Agency for the applicable control period.
3)
If any allowances remain after the allocation of allowances pursuant to
subsection (b)(2) of this Section, the Agency will then distribute pro-rata
the remaining allowances to project categories that have fewer than twice
the number of allowances assigned to that project category. The pro-rata
distribution will be based on the difference between two times the project
category and the number of allowances that remain in the project category.
4)
If allowances still remain undistributed after the allocations and
distributions in the subsections (b)(1) through (b)(3) are completed, the
Agency may elect to retire the CAIR NO
x
allowances that have not been
distributed to any CASA category to continue progress toward attainment
or maintenance of the National Ambient Air Quality Standards pursuant to
the CAA.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.480
Compliance Supplement Pool
In addition to the CAIR NO
x
allowances allocated pursuant to Section 225.425, the USEPA has
allowed allocation of an additional 11,299 CAIR NO
x
allowances in Illinois as a compliance
supplement pool to Illinois for the control period in 2009. However, for the purposes of public
health and air quality improvements, none of these allowances will be allocated.

97
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
SUBPART E: CAIR NO
x
OZONE SEASON TRADING PROGRAM
Section 225.500
Purpose
The purpose of this Subpart E is to control the seasonal emissions of nitrogen oxides (NO
x
) from
EGUs by determining allocations and implementing the CAIR NO
x
Ozone Season Trading
Program.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.505
Applicability
a)
Except as provided in subsections (b)(1), (b)(3), and (b)(4) of this Section:
1)
The following units are CAIR NO
x
Ozone Season units, and any source
that includes one or more such units is a CAIR NO
x
source subject to the
requirements of this Subpart E: any stationary, fossil-fuel-fired boiler or
stationary, fossil-fuel-fired combustion turbine serving at any time, since
the later of November 15, 1990 or the start-up of the unit’s combustion
chamber, a generator with nameplate capacity of more than 25 MWe
producing electricity for sale.
2)
If a stationary boiler or stationary combustion turbine that, pursuant to
subsection (a)(1) of this Section, is not a CAIR NO
x
Ozone Season unit
begins to combust fossil fuel or to serve a generator with nameplate
capacity of more than 25 MWe producing electricity for sale, the unit will
become a CAIR NO
x
Ozone Season unit as provided in subsection (a)(1)
of this Section on the first date on which it both combusts fossil fuel and
serves such generator.
b)
The units that meet the requirements set forth in subsections (b)(1), (b)(3), and
(b)(4) of this Section will not be CAIR NO
x
Ozone Season units and units that
meet the requirements of subsections (b)(2) and (b)(5) of this Section are CAIR
NO
x
Ozone Season units:
1)
Any unit that would otherwise be classified as a CAIR NO
x
Ozone Season
unit pursuant to subsection (a)(1) or (a)(2) of this Section and:
A)
Qualifies as a cogeneration unit during the 12-month period
starting on the date the unit first produces electricity and continues
to qualify as a cogeneration unit; and

98
B)
Does not serve at any time, since the later of November 15, 1990
or the start-up of the unit’s combustion chamber, a generator with
nameplate capacity of more than 25 MWe supplying any calendar
year more than one-third of the unit’s potential electric output
capacity or 219,000 MWh, whichever is greater, to any utility
power distribution for sale.
2)
If a unit qualifies as a cogeneration unit during the 12-month period
starting on the date the unit first produces electricity and meets the
requirements of subsection (b)(1) of this Section for at least one calendar
year, but subsequently no longer meets all such requirements, the unit
shall become a CAIR NO
x
Ozone Season unit starting on the earlier of
January 1 after the first calendar year during which the unit no longer
qualifies as a cogeneration unit or January 1 after the first calendar year
during which the unit no longer meets the requirements of subsection
(b)(1)(B) of this Section.
3)
Any unit that would otherwise be classified as a CAIR NO
x
Ozone Season
unit pursuant to subsection (a)(1) or (a)(2) of this Section commencing
operation before January 1, 1985 and:
A)
Qualifies as a solid waste incineration unit; and
B)
Has an average annual fuel consumption of non-fossil fuel for
1985-1987 exceeding 80 percent (on a Btu basis) and an average
annual fuel consumption of non-fossil fuel for any three
consecutive calendar years after 1990 exceeding 80 percent (on a
Btu basis).
4)
Any unit that would otherwise be classified as a CAIR NO
x
Ozone Season
unit under subsection (a)(1) or (a)(2) of this Section commencing
operation on or after January 1, 1985 and:
A)
Qualifies as a solid waste incineration unit; and
B)
Has an average annual fuel consumption of non-fossil fuel the first
three years of operation exceeding 80 percent (on a Btu basis) and
an average annual fuel consumption of non-fossil fuel for any three
consecutive calendar years after 1990 exceeding 80 percent (on a
Btu basis).
5)
If a unit qualifies as a solid waste incineration unit and meets the
requirements of subsection (b)(3) or (b)(4) of this Section for at least three
consecutive years, but subsequently no longer meets all such
requirements, the unit shall become a CAIR NO
x
Ozone Season unit

99
starting on the earlier of January 1 after the first three consecutive calendar
years after 1990 for which the unit has an average annual fuel
consumption of 20 percent or more.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.510
Compliance Requirements
a)
The designated representative of a CAIR NO
x
Ozone Season unit must comply
with the requirements of the CAIR NO
x
Ozone Season Trading Program for
Illinois as set forth in this Subpart E and 40 CFR 96, subpart AAAA (CAIR NO
x
Ozone Season Trading Program General Provisions) (excluding 40 CFR 96.304,
96.305(b)(2), and 96.306); 40 CFR 96, subpart BBBB (CAIR Designated
Representative for CAIR NO
x
Ozone Season Sources); 40 CFR 96, subpart FFFF
(CAIR NO
x
Ozone Season Allowance Tracking System); 40 CFR 96, subpart
GGGG (CAIR NO
x
Ozone Season Allowance Transfers); and 40 CFR 96,
subpart HHHH (Monitoring and Reporting); as incorporated by reference in
Section 225.140.
b)
Permit requirements:
1)
The designated representative of each source with one or more CAIR NO
x
Ozone Season units at the source must apply for a permit issued by the
Agency with federally enforceable conditions covering the CAIR NO
x
Ozone Season Trading Program (“CAIR permit”) that complies with the
requirements of Section 225.520 (Permit Requirements).
2)
The owner or operator of each CAIR NO
x
Ozone Season source and each
CAIR NO
x
Ozone Season unit at the source must operate the CAIR NO
x
Ozone Season unit in compliance with its CAIR permit.
c)
Monitoring requirements:
1)
The owner or operator of each CAIR NO
x
Ozone Season source and each
CAIR NO
x
Ozone Season unit at the source must comply with the
monitoring, reporting and recordkeeping requirements of 40 CFR 96,
subpart HHHH; 40 CFR 75; and Section 225.550. The CAIR designated
representative of each CAIR NO
x
Ozone Season source and each CAIR
NO
x
Ozone Season unit at the source must comply with those sections of
the monitoring, reporting and recordkeeping requirements of 40 CFR 96,
subpart HHHH, applicable to a CAIR designated representative.
2)
The compliance of each CAIR NO
x
Ozone Season source with the CAIR
NO
x
Ozone Season emissions limitation pursuant to subsection (d) of this
Section will be determined by the emissions measurements recorded and

100
reported in accordance with 40 CFR 96, subpart HHHH.
d)
Emission requirements:
1)
By the allowance transfer deadline, midnight of November 30, 2009, and
by midnight of November 30 of each subsequent year if November 30 is a
business day, the owner or operator of each CAIR NO
x
Ozone Season
source and each CAIR NO
x
Ozone Season unit at the source must hold
allowances available for compliance deductions pursuant to 40 CFR
96.354(a) in the CAIR NO
x
Ozone Season source’s compliance account.
If November 30 is not a business day, the allowance transfer deadline
means by midnight of the first business day thereafter. The number of
allowances held may not be less than the tons of NO
x
emissions for the
control period from all CAIR NO
x
Ozone Season units at the CAIR NO
x
Ozone Season source, as determined in accordance with 40 CFR 96,
subpart HHHH.
2)
Each ton of excess emissions of a CAIR NO
x
Ozone Season source for
each day in a control period, starting in 2009 will constitute a separate
violation of this Subpart E, the Act, and the CAA.
3)
Each CAIR NO
x
Ozone Season unit will be subject to the requirements of
subsection (d)(1) of this Section for the control period starting on the later
of May 1, 2009 or the deadline for meeting the unit’s monitoring
certification requirements pursuant to 40 CFR 96.370(b)(1), (b)(2) or
(b)(3) and for each control period thereafter.
4)
CAIR NO
x
Ozone Season allowances must be held in, deducted from, or
transferred into or among allowance accounts in accordance with this
Subpart and 40 CFR 96, subparts FFFF and GGGG.
5)
In order to comply with the requirements of subsection (d)(1) of this
Section, a CAIR NO
x
Ozone Season allowance may not be deducted for
compliance according to subsection (d)(1) of this Section, for a control
period in a calendar year before the year for which the CAIR NO
x
Ozone
Season allowance is allocated.
6)
A CAIR NO
x
Ozone Season allowance is a limited authorization to emit
one ton of NO
x
in accordance with the CAIR NO
x
Ozone Season Trading
Program. No provision of the CAIR NO
x
Ozone Season Trading Program,
the CAIR permit application, the CAIR permit, or a retired unit
exemption pursuant to 40 CFR 96.305, and no provision of law, will be
construed to limit the authority of the United States or the State to
terminate or limit this authorization.
7)
A CAIR NO
x
Ozone Season allowance does not constitute a property

101
right.
8)
Upon recordation by USEPA pursuant to 40 CFR 96, subpart FFFF or
GGGG, every allocation, transfer, or deduction of a CAIR NO
x
Ozone
Season allowance to or from a CAIR NO
x
Ozone Season source
compliance account is deemed to amend automatically, and become a part
of, any CAIR permit of the CAIR NO
x
Ozone Season source. This
automatic amendment of the CAIR permit will be deemed an operation of
law and will not require any further review.
e)
Recordkeeping and reporting requirements:
1)
Unless otherwise provided, the owner or operator of the CAIR NO
x
Ozone
Season source and each CAIR NO
x
Ozone Season unit at the source must
keep on site at the source each of the documents listed in subsections
(e)(1)(A) through (e)(1)(E) of this Section for a period of five years from
the date the document is created. This period may be extended for cause,
at any time prior to the end of five years, in writing by the Agency or
USEPA.
A)
The certificate of representation for the CAIR designated
representative for the source and each CAIR NO
x
Ozone Season
unit at the source, all documents that demonstrate the truth of the
statements in the certificate of representation, provided that the
certificate and documents must be retained on site at the source
beyond such five-year period until the documents are superseded
because of the submission of a new certificate of representation,
pursuant to 40 CFR 96.313, changing the CAIR designated
representative.
B)
All emissions monitoring information, in accordance with 40 CFR
96, subpart HHHH.
C)
Copies of all reports, compliance certifications, and other
submissions and all records made or required pursuant to the CAIR
NO
x
Ozone Season Trading Program or documents necessary to
demonstrate compliance with the requirements of the CAIR NO
x
Ozone Season Trading Program or with the requirements of this
Subpart E.
D)
Copies of all documents used to complete a CAIR permit
application and any other submission or documents used to
demonstrate compliance pursuant to the CAIR NO
x
Ozone Season
Trading Program.
E)
Copies of all records and logs for gross electrical output and useful

102
thermal energy required by Section 225.550.
2)
The CAIR designated representative of a CAIR NO
x
Ozone Season source
and each CAIR NO
x
Ozone Season unit at the source must submit to the
Agency and USEPA the reports and compliance certifications required
pursuant to the CAIR NO
x
Ozone Season Trading Program, including
those pursuant to 40 CFR 96, subpart HHHH and Section 225.550.
f)
Liability:
1)
No revision of a permit for a CAIR NO
x
Ozone Season unit may excuse
any violation of the requirements of this Subpart E or the requirements of
the CAIR NO
x
Ozone Season Trading Program.
2)
Each CAIR NO
x
Ozone Season source and each CAIR NO
x
Ozone Season
unit must meet the requirements of the CAIR NO
x
Ozone Season Trading
Program.
3)
Any provision of the CAIR NO
x
Ozone Season Trading Program that
applies to a CAIR NO
x
Ozone Season source (including any provision
applicable to the CAIR designated representative of a CAIR NO
x
Ozone
Season source) will also apply to the owner and operator of the CAIR NO
x
Ozone Season source and to the owner and operator of each CAIR NO
x
Ozone Season unit at the source.
4)
Any provision of the CAIR NO
x
Ozone Season Trading Program that
applies to a CAIR NO
x
Ozone Season unit (including any provision
applicable to the CAIR designated representative of a CAIR NO
x
Ozone
Season unit) will also apply to the owner and operator of the CAIR NO
x
Ozone Season unit.
5)
The CAIR designated representative of a CAIR NO
x
Ozone Season unit
that has excess emissions in any control period must surrender the
allowances as required for deduction pursuant to 40 CFR 96.354(d)(1).
6)
The owner or operator of a CAIR NO
x
Ozone Season unit that has excess
NO
x
emissions in any control period must pay any fine, penalty, or
assessment or comply with any other remedy imposed pursuant to the Act
and 40 CFR 96.354(d)(2).
g)
Effect on other authorities: No provision of the CAIR NO
x
Ozone Season
Trading Program, a CAIR permit application, a CAIR permit, or a retired unit
exemption pursuant to 40 CFR 96.305 will be construed as exempting or
excluding the owner and operator and, to the extent applicable, the CAIR
designated representative of a CAIR NO
x
Ozone Season source or a CAIR NO
x
Ozone Season unit from compliance with any other regulation promulgated

103
pursuant to the CAA, the Act, any State regulation or permit, or a federally
enforceable permit.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.515
Appeal Procedures
The appeal procedures for decisions of USEPA pursuant to the CAIR NO
x
Ozone Season
Trading Program are set forth in 40 CFR 78, as incorporated by reference in Section 225.140.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.520
Permit Requirements
a)
Permit requirements:
1)
The owner or operator of each source with a CAIR NO
x
Ozone Season
unit is required to submit:
A)
A complete permit application addressing all applicable CAIR NO
x
Ozone Season Trading Program requirements for a permit meeting
the requirements of this Section, applicable to each CAIR NO
x
Ozone Season unit at the source. Each CAIR permit must contain
elements required for a complete CAIR permit application
pursuant to subsection (b)(2) of this Section.
B)
Any supplemental information that the Agency determines
necessary in order to review a CAIR permit application and issue
any CAIR permit.
2)
Each CAIR permit will be issued pursuant to Sections 39 and 39.5 of the
Act and will contain federally enforceable conditions addressing all
applicable CAIR NO
x
Ozone Season Trading Program requirements and
will be a complete and segregable portion of the source’s entire permit
pursuant to subsection (a)(1) of this Section.
3)
No CAIR permit may be issued until the Agency and USEPA have
received a complete certificate of representation for a CAIR designated
representative pursuant to 40 CFR 96, subpart BBBB, for the CAIR NO
x
Ozone Season source and the CAIR NO
x
Ozone Season unit at the source.
4)
For all CAIR NO
x
Ozone Season units that commenced operation before
December 31, 2007, the owner or operator of the unit must submit a CAIR

104
permit application meeting the requirements of this Section on or before
December 31, 2007.
5)
For all units that commence operation on or after December 31, 2007, the
owner or operator of these units must submit applications for construction
and operating permits pursuant to the requirements of Sections 39 and
39.5 of the Act, as applicable, and 35 Ill. Adm. Code 201, and the
applications must specify that they are applying for CAIR permits and
must address the CAIR permit application requirements of this Section
225.520.
b)
Permit applications:
1)
Duty to apply: The owner or operator of any source with one or more
CAIR NO
x
Ozone Season units must submit to the Agency a CAIR permit
application for the source covering each CAIR NO
x
Ozone Season unit
pursuant to subsection (b)(2) of this Section by the applicable deadline in
subsection (a)(4) or (a)(5) of this Section. The owner or operator of any
source with one or more CAIR NO
x
Ozone Season units must reapply for
a CAIR permit for the source as required by this Subpart, 35 Ill. Adm.
Code 201, and, as applicable, Sections 39 and 39.5 of the Act.
2)
Information requirements for CAIR permit applications. A complete
CAIR permit application must include the following elements concerning
the source for which the application is submitted:
A)
Identification of the source, including plant name. The ORIS
(Office of Regulatory Information Systems) or facility code
assigned to the source by the Energy Information Administration
must also be included, if applicable;
B)
Identification of each CAIR NO
x
Ozone Season unit at the source;
and
C)
The compliance requirements applicable to each CAIR NO
x
Ozone
Season unit as set forth in Section 225.510.
3)
An application for a CAIR permit will be treated as a modification of the
CAIR NO
x
Ozone Season source’s existing federally enforceable permit,
if such a permit has been issued for that source, and will be subject to the
same procedural requirements. When the Agency issues a CAIR permit
pursuant to the requirements of this Section, it will be incorporated into
and become part of that source’s existing federally enforceable permit.
c)
Permit content: Each CAIR permit is deemed to incorporate automatically the
definitions and terms specified in Section 225.130 and 40 CFR 96.302, as

 
105
incorporated by reference in Section 225.140, and, upon recordation of USEPA
under 40 CFR 96, subparts FFFF and GGGG, as incorporated by reference in
Section 225.140, every allocation, transfer, or deduction of a CAIR NO
x
Ozone
Season allowance to or from the compliance account of the CAIR NO
x
Ozone
Season source covered by the permit.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.525
Ozone Season Trading Budget
The CAIR NO
x
Ozone Season Trading budget available for allowance allocations for each
control period will be determined as follows:
a)
The total base CAIR NO
x
Ozone Season Trading budget is 30,701 tons per
control period for the years 2009 through 2014, subject to a reduction for two set-
asides, the NUSA and the CASA. Five percent of the budget will be allocated to
the NUSA and 25 percent will be allocated to the CASA, resulting in a CAIR NO
x
Ozone Season Trading budget available for allocation of 21,491 tons per control
period pursuant to Section 225.540. The requirements of the NUSA are set forth
in Section 225.545, and the requirements of the CASA are set forth in Sections
225.555 through 225.570.
b)
The total base CAIR NO
x
Ozone Season Trading budget is 28,981 tons per
control period for the year 2015 and thereafter, subject to a reduction for two set-
asides, the NUSA and the CASA. Five percent of the budget will be allocated to
the NUSA and 25 percent will be allocated to the CASA, resulting in a CAIR NO
x
Ozone Season Trading budget available for allocation of 20,287 tons per control
period pursuant to Section 225.540.
c)
If USEPA adjusts the total base CAIR NO
x
Ozone Season Trading budget for any
reason, the Agency will adjust the base CAIR NO
x
Ozone Season Trading budget
and the CAIR NO
x
Ozone Season Trading budget available for allocation,
accordingly.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.530
Timing for Ozone Season Allocations
a)
On or before September 25, 2007, the Agency will submit to USEPA the CAIR
NO
x
Ozone Season allowance allocations, in accordance with Sections 225.535
and 225.540, for the 2009, 2010, and 2011 control periods.
b)
By July, 2008 and July 31 of each year thereafter, the Agency will submit to
USEPA the CAIR NO
x
Ozone Season allowance allocations in accordance with

106
Sections 225.535 and 225.540, for the control period four years after the year of
the applicable deadline for submission pursuant to this Section. For example, on
July 31, 2008, the Agency will submit to USEPA the allocation for the 2012
control period.
c)
For CAIR NO
x
Ozone Season units that commence commercial operation on or
after May 1, 2006, that have not been allocated allowances under Section 225.440
for the applicable or any preceding control period, the Agency will allocate
allowances from the NUSA in accordance with Section 225.545. The Agency
will report these allocations to USEPA by July 31 of the applicable control period.
For example, on July 31, 2009, the Agency will submit to USEPA the allocations
from the NUSA for the 2009 control period.
d)
The Agency will allocate allowances from the CASA to energy efficiency,
renewable energy, and clean technology projects pursuant to the criteria in
Sections 225.555 through 225.570. The Agency will report these allocations to
USEPA by October 1 of each year. For example, on October 1, 2009, the Agency
will submit to USEPA the allocations from the CASA for the 2009 control period,
based on reductions made in the 2008 control period.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.535
Methodology for Calculating Ozone Season Allocations
The Agency will calculate converted gross electrical output (CGO), in MWh, for each CAIR
NO
x
Ozone Season unit that has operated during at least one control period prior to the calendar
year in which the Agency reports the allocations to USEPA as follows:
a)
For control periods 2009, 2010, and 2011, the owner or operator of the unit must
submit in writing to the Agency, by September 15, 2007, a statement that either
gross electrical output data or heat input data is to be used to calculate converted
gross electrical output. The data shall be used to calculate converted gross
electrical output pursuant to either subsection (a)(1) or (a)(2) of this Section:
1)
Gross electrical output: If the unit has four or five control periods of data,
then the gross electrical output (GO) will be the average of the unit’s three
highest gross electrical outputs from the 2001, 2002, 2003, 2004, or 2005
control periods. If the unit has three or fewer control periods of gross
electrical outputs, the gross electrical output will be the average of those
control periods for which data is available. If a generator is served by two
or more units, then the gross electrical output of the generator will be
attributed to each unit in proportion to the unit’s share of the total control
period heat input of these units for the control period. The unit’s
converted gross electrical output will be calculated as follows:

107
A)
If the unit is coal-fired:
CGO (in MWh) = GO (in MWh)
×
1.0;
B)
If the unit is oil-fired:
CGO (in MWh) = GO (in MWh)
×
0.6; or
C)
If the unit is neither coal-fired nor oil-fired:
CGO (in MWh) = GO (in MWh)
×
0.4.
2)
Heat input (HI): If the unit has four or five control periods of data, the
average of the unit’s three highest control period heat inputs from 2001,
2002, 2003, 2004, or 2005 will be used. If the unit has three or fewer
control periods of heat input data, the heat input will be the average of
those control periods for which data is available. The unit’s converted
gross electrical output will be calculated as follows:
A)
If the unit is coal-fired:
CGO (in MWh) = HI (in mmBtu)
×
0.0967;
B)
If the unit is oil-fired:
CGO (in MWh) = HI (in mmBtu)
×
0.0580; or
C)
If the unit is neither coal-fired nor oil-fired:
CGO (in MWh) = HI (in mmBtu)
×
0.0387.
b)
For control periods 2012 and 2013, the owner or operator of the unit must submit
in writing to the Agency, by June 1, 2008, a statement that either gross electrical
output data or heat input data is to be used to calculate the unit’s converted gross
electrical output. The unit’s converted gross electrical output shall be calculated
pursuant to either subsection (b)(1) or (b)(2) of this Section:
1)
Gross electrical output: The average of the unit’s two most recent years of
control period gross electrical output, if available. If a unit commences
commercial operation in the 2007 control period and does not have gross
electrical output for the 2006 control period, the gross electrical output
from the 2007 control period will be used. If a generator is served by two
or more units, the gross electrical output of the generator shall be
attributed to each unit in proportion to the unit’s share of the total control
period heat input of such units for the control period. The unit’s converted
gross electrical output shall be calculated as follows:
A)
If the unit is coal-fired:
CGO (in MWh) = GO (in MWh)
×
1.0;
B)
If the unit is oil-fired:
CGO (in MWh) = GO (in MWh)
×
0.6;

108
C)
If the unit is neither coal-fired nor oil-fired:
CGO (in MWh) = GO (in MWh)
×
0.4.
2)
Heat input: The average of the unit’s two most recent years of control
period heat inputs, e.g., for the 2012 control period, the average of the
unit’s heat input from the 2006 and 2007 control periods. The unit’s
converted gross electrical output shall be calculated as follows:
A)
If the unit is coal-fired:
CGO (in MWh) = HI (in mmBtu)
×
0.0967;
B)
If the unit is oil-fired:
CGO (in MWh) = HI (in mmBtu)
×
0.0580; or
C)
If the unit is neither coal-fired nor oil-fired:
CGO (in MWh) = HI (in mmBtu)
×
0.0387.
c)
For control period 2014 and thereafter, the unit’s gross electrical output will be
the average of the unit’s two most recent control period’s gross electrical output,
if available. If a unit commences commercial operation in the most recent control
period and does not have gross electrical output from the most recent control
period, e.g., if the unit commences commercial operation in the 2009 control
period and does not have gross electrical output from the 2008 control period,
gross electrical output from the 2009 control period will be used. If a generator is
served by two or more units, the gross electrical output of the generator will be
attributed to each unit in proportion to the unit’s share of the total control period
heat input of these units for the control period. The unit’s converted gross
electrical output will be calculated as follows:
1)
If the unit is coal-fired:
CGO (in MWh) = GO (in MWh)
×
1.0;
2)
If the unit is oil-fired:
CGO (in MWh) = GO (in MWh)
×
0.6; or
3)
If the unit is neither coal-fired nor oil-fired:
CGO (in MWh) = GO (in MWh)
×
0.4.
d)
For a unit that is a combustion turbine or boiler and has equipment used to
produce electricity and useful thermal energy for industrial, commercial, heating,
or cooling purposes through the sequential use of energy, the Agency will add the
converted gross electrical output calculated for electricity pursuant to subsection
(a), (b), or (c) of this Section to the converted useful thermal energy (CUTE) to
determine the total converted gross electrical output for the unit (TCGO). The
Agency will determine the converted useful thermal energy by using the average

109
of the unit’s control period useful thermal energy for the prior two control
periods, if available. In the first control period for which the unit is considered to
be an existing unit rather than a new unit, the unit’s control period useful thermal
output for the prior year will be used. The converted useful thermal energy will
be determined using the following equations:
1)
If the unit is coal-fired:
CUTE (in MWh) = UTE (in mmBtu)
×
0.2930;
2)
If the unit is oil-fired:
CUTE (in MWh) = UTE (in mmBtu)
×
0.1758; or
3)
If the unit is neither coal-fired nor oil-fired:
CUTE (in MWh) = UTE (in mmBtu)
×
0.1172.
e)
The CAIR NO
x
Ozone Season unit’s converted gross electrical output and
converted useful thermal energy in subsections (a)(1), (b)(1), (c), and (d) of this
Section for each control period will be based on the best available data reported or
available to the Agency for the CAIR NO
x
Ozone Season unit pursuant to the
provisions of Section 225.550.
f)
The CAIR NO
x
Ozone Season unit’s heat input in subsections (a)(2) and (b)(2) of
this Section for each control period will be determined in accordance with 40
CFR 75, as incorporated by reference in Section 225.140.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.540
Ozone Season Allocations
a)
For the 2009 control period, and each control period thereafter, the Agency will
allocate, to all CAIR NO
x
Ozone Season units in Illinois for which the Agency
has calculated the converted gross electrical output pursuant to Section
225.535(a), (b), or (c), or total converted gross electrical output pursuant to
Section 225.535(d), as applicable, a total amount of CAIR NO
x
Ozone Season
allowances equal to tons of NO
x
emissions in the CAIR NO
x
Ozone Season
Trading budget available for allocation as determined in Section 225.525 and, as
adjusted to add allowances not allocated pursuant to subsection (b) of this Section
in the previous year’s allocation.
b)
The Agency will allocate CAIR NO
x
Ozone Season allowances to each CAIR
NO
x
Ozone Season unit on a pro-rata basis using the unit’s converted gross
electrical output pursuant to Section 225.535(a), (b), or (c), or total converted
gross electrical output calculated pursuant to Section 225.535(d), as applicable, to
the extent whole allowances may be allocated. The Agency will retain any
additional allowances beyond this allocation of whole allowances for allocation

110
pursuant to subsection (a) of this Section in the next control period.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.545
New Unit Set-Aside (NUSA)
For the 2009 control period and each control period thereafter, the Agency will allocate CAIR
NO
x
Ozone Season allowances from the NUSA to CAIR NO
x
Ozone Season units that
commenced commercial operation on or after May 1, 2006, and do not yet have an allocation for
the particular control period or any preceding control period pursuant to Section 225.540, in
accordance with the following procedures:
a)
Beginning with the 2009 control period and each control period thereafter, the
Agency will establish a separate NUSA for each control period. Each NUSA will
be allocated CAIR NO
x
Ozone Season allowances equal to five percent of the
amount of tons of NO
x
emissions in the base CAIR NO
x
Ozone Season Trading
budget in Section 225.525.
b)
The CAIR designated representative of a new CAIR NO
x
Ozone Season unit may
submit to the Agency a request, in a format specified by the Agency, to be
allocated CAIR NO
x
Ozone Season allowances from the NUSA, starting with the
first control period after the control period in which the new unit commences
commercial operation and until the fifth control period after the control period in
which the unit commenced commercial operation. The NUSA allowance
allocation request may only be submitted after a new unit has operated during one
control period, and no later than March 1 of the control period for which
allowances from the NUSA are being requested.
c)
In a NUSA allowance allocation request pursuant to subsection (b) of this
Section, the CAIR designated representative must provide in its request
information for gross electrical output and useful thermal energy, if any, for the
new CAIR NO
x
Ozone Season unit for that control period.
d)
The Agency will allocate allowances from the NUSA to a new CAIR NO
x
Ozone
Season unit using the following procedures:
1)
For each new CAIR NO
x
Ozone Season unit, the unit’s gross electrical
output for the most recent control period will be used to calculate the
unit’s gross electrical output. If a generator is served by two or more
units, the gross electrical output of the generator will be attributed to each
unit in proportion to the unit’s share of the total control period heat input
of these units for the control period. The new unit’s converted gross
electrical output will be calculated as follows:
A)
If the unit is coal-fired:

111
CGO (in MWh) = GO (in MWh)
×
1.0;
B)
If the unit is oil-fired:
CGO (in MWh) = GO (in MWh)
×
0.6; or
C)
If the unit is neither coal-fired nor oil-fired:
CGO (in MWh) = GO (in MWh)
×
0.4.
2)
If the unit is a combustion turbine or boiler and has equipment used to
produce electricity and useful thermal energy for industrial, commercial,
heating, or cooling purposes through the sequential use of energy, the
Agency will add the converted gross electrical output calculated for
electricity pursuant to subsection (d)(1) of this Section to the converted
useful thermal energy to determine the total converted gross electrical
output for the unit. The Agency will determine the converted useful
thermal energy using the unit’s useful thermal energy for the most recent
control period. The converted useful thermal energy will be determined
using the following equations:
A)
If the unit is coal-fired:
CUTE (in MWh) = UTE (in mmBtu)
×
0.2930;
B)
If the unit is oil-fired:
CUTE (in MWh) = UTE (in mmBtu)
×
0.1758; or
C)
If the unit is neither coal-fired nor oil-fired:
CUTE (in MWh) = UTE (in mmBtu)
×
0.1172.
3)
The gross electrical output and useful thermal energy in subsections (d)(1)
and (d)(2) of this Section for each control period will be based on the best
available data reported or available to the Agency for the CAIR NO
x
Ozone Season unit pursuant to the provisions of Section 225.550 .
4)
The Agency will determine a unit’s unprorated allocation (UA
y
) using the
unit’s converted gross electrical output plus the unit’s converted useful
thermal energy, if any, calculated in subsections (d)(1) and (d)(2) of this
Section, converted to approximate NO
x
tons (the unit’s unprorated
allocation), as follows:
lbs ton
NCGO
lbs MWh
UA
y
y
2000
/
×(1
.0
/
)
=
Where:
UA
y
=
unprorated allocation to a new CAIR NO
x

112
Ozone Season unit.
NCGO
y
=
converted gross electrical output or total
converted gross electrical output, as
applicable, for a new CAIR NO
x
Ozone
Season unit.
5)
The Agency will allocate CAIR NO
x
Ozone Season allowances from the
NUSA to new CAIR NO
x
Ozone Season units as follows:
A)
If the NUSA for the control period for which CAIR NO
x
Ozone
Season allowances are requested has a number of allowances
greater than or equal to the total unprorated allocations for all new
units requesting allowances, the Agency will allocate the number
of allowances using the unprorated allocation determined for that
unit pursuant to subsection (d)(4) of this Section, to the extent that
whole allowances may be allocated. For any additional allowances
beyond this allocation of whole allowances, the Agency will retain
the additional allowances in the NUSA for allocation pursuant to
this Section in later control periods.
B)
If the NUSA for the control period for which the allowances are
requested has a number of CAIR NO
x
Ozone Season allowances
less than the total unprorated allocation to all new CAIR NO
x
Ozone Season units requesting allocations, the Agency will
allocate the available allowances for new CAIR NO
x
Ozone
Season units on a pro-rata basis, using the unprorated allocation
determined for that unit pursuant to subsection (d)(4) of this
Section, to the extent that whole allowances may be allocated. For
any additional allowances beyond this allocation of whole
allowances, the Agency will retain the additional allowances in the
NUSA for allocation pursuant to this Section in later control
periods.
e)
The Agency will review each NUSA allowance allocation request pursuant to
subsection (b) of this Section. The Agency will accept a NUSA allowance
allocation request only if the request meets, or is adjusted by the Agency as
necessary to meet, the requirements of this Section.
f)
By June 1 of the applicable control period, the Agency will notify each CAIR
designated representative that submitted a NUSA allowance request of the amount
of CAIR NO
x
Ozone Season allowances from the NUSA, if any, allocated for the
control period to the new unit covered by the request.
g)
The Agency will allocate CAIR NO
x
Ozone Season allowances to new units from
the NUSA no later than July 31 of the applicable control period.

 
113
h)
After a new CAIR NO
x
Ozone Season unit has operated in one control period, it
becomes an existing unit for the purposes of calculating future allocations in
Section 225.540 only, and the Agency will allocate CAIR NO
x
Ozone Season
allowances for that unit, for the control period commencing five control periods
after the control period in which the unit commenced commercial operation,
pursuant to Section 225.540. The new CAIR NO
x
Ozone Season unit will
continue to receive CAIR NO
x
Ozone Season allowances from the NUSA
according to this Section until the unit is eligible to use the CAIR NO
x
Ozone
Season allowances allocated to the unit pursuant to Section 225.540.
i)
If, after the completion of the procedures in subsection (c) of this Section for a
control period, any unallocated CAIR NO
x
Ozone Season allowances remain in
the NUSA for the control period, the Agency will, at a minimum, accrue those
CAIR NO
x
Ozone Season allowances for future control period allocations to new
CAIR NO
x
Ozone Season units. The Agency may from time to time elect to retire
CAIR NO
x
Ozone Season allowances in the NUSA that are in excess of 7,245 for
the purposes of continued progress toward attainment and maintenance of
National Ambient Air Quality Standards pursuant to the CAA.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.550
Monitoring, Recordkeeping and Reporting Requirements for Gross
Electrical Output and Useful Thermal Energy
a)
By January 1, 2008, or by the date of commencing commercial operation,
whichever is later, the owner or operator of the CAIR NO
x
Ozone Season unit
must operate a system for accurately measuring gross electrical output that is
consistent with the requirements of either 40 CFR 60 or 75; must measure gross
electrical output in MWh using such a system; and must record the output of the
measurement system at all times. If a generator is served by two or more units,
the information to determine each unit’s heat input for that control period must
also be recorded, so as to allow each unit’s share of the gross electrical output to
be determined. If heat input data is used, the owner or operator must comply with
the applicable provisions of 40 CFR 75, as incorporated by reference in Section
225.140.
b)
For a CAIR NO
x
Ozone Season unit that is a cogeneration unit by January 1,
2008, or by the date the CAIR NO
x
Ozone Season unit commences to produce
useful thermal energy, whichever is later, the owner or operator of the unit with
cogeneration capabilities must install, calibrate, maintain, and operate meters for
steam flow in lbs/hr, temperature in degrees Fahrenheit, and pressure in PSI, to
measure and record the useful thermal energy that is produced, in mmBtu/hr, on a
continuous basis. Owners and operators of aCAIR NO
x
Ozone Season unit that
produces useful thermal energy but uses an energy transfer medium other than
steam, e.g., hot water or glycol, must install, calibrate, maintain, and operate the

114
necessary meters to measure and record the necessary data to express the useful
thermal energy produced, in mmBtu/hr, on a continuous basis. If the CAIR NO
x
Ozone Season unit ceases to produce useful thermal energy, the owner or operator
may cease operation of these meters, provided that operation of such meters must
be resumed if the CAIR NO
x
Ozone Season unit resumes production of useful
thermal energy.
c)
The owner or operator of a CAIR NO
x
Ozone Season unit must either report gross
electrical output data to the Agency or comply with the applicable provisions for
providing heat input data to USEPA as follows:
1)
By September 15, 2007, the gross electrical output for control periods
2001, 2002, 2003, 2004 and 2005, if available, and the unit’s useful
thermal energy data, if applicable. If a generator is served by two or more
units, the documentation needed to determine each unit’s share of the heat
input of such units for that control period must also be submitted. If heat
input data is used, the owner or operator must comply with the applicable
provisions of 40 CFR 75, as incorporated by reference in Section 225.140.
2)
By June 1, 2008, the gross electrical output for control periods 2006 and
2007, if available, and the unit’s useful thermal energy data, if applicable.
If a generator is served by two or more units, the documentation needed to
determine each unit’s share of the heat input of such units for that control
period must also be submitted. If heat input data is used, the owner or
operator must comply with the applicable provisions of 40 CFR 75, as
incorporated by reference in Section 225.140.
d)
Beginning with 2008, the CAIR designated representative of the CAIR NO
x
Ozone Season unit must submit to the Agency quarterly, by no later than April 30,
July 31, October 31, and January 31 of each year, information for the CAIR NO
x
Ozone Season
unit’s gross electrical output, on a monthly basis for the prior
quarter, and, if applicable, the unit’s useful thermal energy for each month.
e)
The owner or operator of a CAIR NO
x
Ozone Season unit must maintain on-site
the monitoring plan detailing the monitoring system, maintenance of the
monitoring system, including quality assurance activities pursuant to the
requirements of 40 CFR 60 or 75, as applicable, including the appropriate
provisions for the measurement of gross electrical output for the CAIR NO
x
Ozone Season Trading Program and, if applicable, for new units. The monitoring
plan must include, but is not limited to:
1)
A description of the system to be used for the measurement of gross
electrical output pursuant to Section 225.550(a), including a list of any
data logging devices, solid-state kW meters, rotating kW meters,
electromechanical kW meters, current transformers, transducers, potential
transformers, pressure taps, flow venturi, orifice plates, flow nozzles,

115
vortex meters, turbine meters, pressure transmitters, differential pressure
transmitters, temperature transmitters, thermocouples, resistance
temperature detectors, and any equipment or methods used to accurately
measure gross electrical output.
2)
A certification statement by the CAIR designated representative that all
components of the gross electrical output system have been tested to be
accurate within three percent and that the gross electrical output system is
accurate to within ten percent.
f)
The owner or operator of a CAIR NO
x
Ozone Season unit must retain records for
at least five years from the date the record is created or the data is collected under
subsections (a) and (b) of this Section, and the reports are submitted to the
Agency and USEPA in accordance with subsections (c) and (d) of this Section.
The owner or operator of a CAIR NO
x
Ozone Season unit must retain the
monitoring plan required in subsection (e) of this Section for at least five years
from the date that it is replaced by a new or revised monitoring plan.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.555
Clean Air Set-Aside (CASA)
a)
A project sponsor may apply for allowances from the CASA for sponsoring an
energy efficiency and conservation, renewable energy, or clean technology
project as set forth in Section 225.560 by submitting the application required by
Section 225.570.
b)
Notwithstanding subsection (a) of this Section, a project sponsor with a CAIR
NO
x
Ozone Season source that is out of compliance with this Subpart for a given
control period may not apply for allowances from the CASA for that control
period. If a source receives CAIR NO
x
Ozone Season allowances from the CASA
and then is subsequently found to have been out of compliance with this Subpart
for the applicable control period or periods, the project sponsor must restore the
CAIR NO
x
Ozone Season allowances that it received pursuant to its CASA
request or an equivalent number of CAIR NO
x
Ozone Season allowances to the
CASA within six months after receipt of an Agency notice that NO
x
Ozone
Season allowances must be restored. These allowances will be assigned to the
fund from which they were distributed.
c)
CAIR NO
x
Ozone Season allowances from the CASA will be allocated in
accordance with the procedures in Section 225.575.
d)
The project sponsor may submit an application that aggregates two or more
projects under a CASA project category that would individually result in less than

116
one allowance, but that equal at a minimum one whole allowance when
aggregated.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.560
Energy Efficiency and Conservation, Renewable Energy, and Clean
Technology Projects
a)
Energy efficiency and conservation projects means any of the following projects
implemented and located in Illinois:
1)
Demand side management projects that reduce the overall power demand
by using less energy include:
A)
Smart building management software that more efficiently
regulates power flows.
B)
The use of or replacement to high efficiency motors, pumps,
compressors, or steam systems.
C)
Lighting retrofits.
2)
Energy efficient new building construction projects include:
A)
ENERGY STAR-qualified new home projects.
B)
Measures to reduce or conserve energy consumption beyond the
requirements of the Illinois Energy Conservation Code for
Commercial Buildings [20 ILCS 687/6-3].
C)
New residential construction projects that qualify for Energy
Efficient Tax Incentives pursuant to the Energy Policy Act of 2005
(42 USC 15801 (2005)).
3)
Supply-side energy efficiency projects include projects implemented to
improve the efficiency in electricity generation by coal-fired power plants
and the efficiency of electrical transmission and distribution systems.
4)
Highly efficient power generation projects, such as, but not limited to,
combined cycle projects, combined heat and power, and microturbines.
To be considered a highly efficient power generation project pursuant to
this subsection (a)(4), a project must meet the following applicable
thresholds and criteria:

117
A)
For combined heat and power projects generating both electricity
and useful thermal energy for space, water, or industrial process
heat, a rated-energy efficiency of at least 60 percent: the project
shall not be a CAIR NO
x
Ozone Season unit.
B)
For combined cycle projects rated at greater than 0.50 MW, a
rated-energy efficiency of at least 50 percent.
C)
For microturbine projects rated at or below 0.50 MW and all other
projects a rated-energy efficiency of at least 40 percent.
b)
Renewable energy project means any of the following projects implemented and
located in Illinois:
1)
Zero-emission electric generating projects, including wind, solar (thermal
or photovoltaic), and hydropower projects. Eligible hydropower plants are
restricted to new generators that are not replacements of existing
generators, that commenced operation on or after January 1, 2006, and that
do not involve the significant expansion of an existing dam or the
construction of a new dam.
2)
Renewable energy units are those units that generate electricity using more
than 50 percent of the heat input, on an annual basis, from dedicated crops
grown for energy production or the capture systems for methane gas from
landfills, water treatment plants or sewage treatment plants, and organic
waste biomass, and other similar sources of non-fossil fuel energy.
Renewable energy projects do not include energy from incineration by
burning or heating of waste wood, tires, garbage, general household waste,
institutional lunchroom waste, office waste, landscape waste, or
construction or demolition debris.
c)
Clean technology projects for reducing emissions from producing electricity and
useful thermal energy means any of the following projects implemented and
located in Illinois:
1)
Air pollution control equipment upgrades for control of NO
x
emissions at
existing coal-fired EGUs, as follows: installation of a selective catalytic
reduction (SCR) or selective non-catalytic reduction (SNCR) system, or
other emission control technologies. For this purpose, a unit will be
considered “existing” after it has been in commercial operation for at least
eight years. Air pollution control upgrades do not include the addition of
low NO
x
burners, overfired air techniques, gas reburning techniques, flue
gas conditioning techniques for the control of NO
x
emissions, projects
involving upgrades or replacement of electrostatic precipitators, or
addition of an activated carbon injection, or other sorbent injection for
control of mercury.

118
2)
Clean coal technologies projects include:
A)
Integrated gasification combined cycle (IGCC) plants.
B)
Fluidized bed coal combustion that commenced operation prior to
December 31, 2006.
d)
In addition to those projects excluded in subsections (a) through (c) of this
Section, the following projects are also not energy efficiency and conservation,
renewable energy, or clean technology projects:
1)
Nuclear power projects.
2)
Projects required to meet emission standards or technology requirements
under State or federal law or regulation, except that allowances may be
allocated for projects undertaken pursuant to Section 225.233 or Subpart
F.
3)
Projects used to meet the requirements of a court order or consent decree,
except that allowances may be allocated for:
A)
Emission rates or limits achieved that are lower than what is
required to meet the emission rates or limits for SO
2
or NO
x,
or for
installing a baghouse as provided for in a court order or consent
decree entered into before May 30, 2006.
B)
Projects used to meet the requirements of a court order or consent
decree entered into on or after May 30, 2006, if the court order or
consent decree does not specifically preclude such allocations.
4)
A Supplemental Environmental Project (SEP).
e)
Applications for projects implemented and located in Illinois that are not
specifically listed in subsections (a) through (c) of this Section, and that are not
specifically excluded by definition in subsections (a) through (c) of this Section or
by specific exclusion in subsection (d) of this Section, may be submitted to the
Agency. The application must designate which category or categories from those
listed in subsections (a)(1) through (c)(2)(B) of this Section best fit the proposed
project and the applicable formula pursuant to Section 225.565(b) to calculate the
number of allowances that it is requesting. The Agency will determine whether
the application is approvable based on a sufficient demonstration by the project
sponsor that the project is a new type of energy efficiency, renewable energy, or
clean technology project, similar in its effects as the projects specifically listed in
subsections (a) through (c) of this Section.

 
119
f)
Early adopter projects include projects that meet the criteria for any energy
efficiency and conservation, renewable energy, or clean technology projects listed
in subsections (a), (b), (c), and (e) of this Section and commence construction
between July 1, 2006 and December 31, 2012.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.565
Clean Air Set-Aside (CASA) Allowances
a)
The CAIR NO
x
Ozone Season allowances for the CASA for each control period
will be assigned to the following categories of projects:
Phase I
Phase II
(2009-2014)
(2015 and
thereafter)
1)
Energy Efficiency and Conservation/
3684
3479
Renewable Energy
2)
Air Pollution Control Equipment
1535
1448
Upgrades
3)
Clean Coal Technology Projects
1842
1738
4)
Early Adopters
614
580
b)
The following formulas must be used to determine the number of CASA
allowances that may be allocated to a project per control period:
1)
For an energy efficiency and conservation project pursuant to Section
225.560(a)(1) through (a)(4)(A), the number of allowances must be
calculated using the number of megawatt hours of electricity that was not
consumed during a control period and the following formula:
A
=
(MWh
c
)
×
(1.5 lb/MWh) / 2000 lb
Where:
A
=
The number of allowances for a particular project.
MWh
c
=
The number of megawatt hours of electricity
conserved or generated during a control period by a
project.
2)
For a zero emission electric generating project pursuant to Section
225.560(b)(1), the number of allowances must be calculated using the

120
number of megawatt hours of electricity generated during a control period
and the following formula:
A
=
(MWh
g
)
×
(2.0 lb/MWh) / 2000 lb
Where:
A
=
The number of allowances for a particular project
MWh
g
=
The number of megawatt hours of electricity
generated during a control period by a project.
3)
For a renewable energy emission unit pursuant to Section 225.560(b)(2),
the number of allowances must be calculated using the number of
megawatt hours of electricity generated during a control period and the
following formula:
A
=
(MWh
g
)
×
(0.5 lb/MWh) / 2000 lb
Where:
A
=
The number of allowances for a particular project.
MWh
g
=
The number of MW hours of electricity generated
during a control period by a project.
1)
For an air pollution control equipment upgrade project pursuant to Section
225.560(c)(1), the number of allowances must be calculated using the
emission rate before and after replacement or improvement, and the
following formula:
A
=
(MWh
g
)
×
0.10
×
(ER
B
lb/MWh - ER
A
lb/MWh) / 2000 lb
Where:
A
=
The number of allowances for a particular project.
MWh
g
=
The number of MWhs of electricity
generated during a control period by a project.
ER
B
=
Average NO
x
emission rate based on CEMS data
from the most recent two control periods prior to
the replacement or improvement of the control
equipment in lb/MWh, unless subject to a consent
decree or court order. For units subject to a consent
decree or court order entered into before May 30,
2006, ER
B
is limited to emission rates or limits that
are lower than the emission rate or limit required in
the consent decree or court order. On or after May
30, 2006, ER
B
is limited to emission rates or limits

121
specified in the consent decree or court order. If
such limit is not expressed in lb/MWh, the limit
shall be converted into lb/MWh using a heat rate of
10 mmBtu/1 MW.
ER
A
=
Average NO
x
emission rate for the applicable
control period data based on CEMS data in
lb/MWh.
5)
For highly efficient power generation and clean coal technology projects:
A)
For projects other than fluidized coal combustion pursuant to
Section 225.560(a)(4)(B), (a)(4)(C), and (c)(2), the number of
allowances must be calculated using the number of MWh of
electricity the project generates during a control period and the
following formula:
A
=
(MWh
g
)
×
(1.0 lb/MWh – ER lb/MWh) / 2000 lb
Where:
A
=
The number of allowances for a particular
project.
MWh
g
=
The number of megawatt hours of electricity
generated during a control period by a
project.
ER
=
Annual average NO
x
emission rate based on
CEMS data in 1b/MWh.
B)
For fluidized bed coal combustion projects pursuant to Section
225.560(c)(2), the number of allowances shall be calculated using
the number of gross MWh of electricity the project generates
during a control period and the following formula:
A
=
(MWh
g
) x (1.4 lb/MWh – ER lb/MWh) / 2000 lb
Where:
A
=
The number of allowances for a particular
project.
MWh
g
=
The number of gross MWh of electricity
generated during a control period by a
project.
ER
=
Annual NO
x
emission rate for the control
period based on CEMS data in lb/MWh.
6)
For a CASA project that commences construction before December 31,
2012, in addition to the allowances allocated pursuant to subsections

122
(b)(1) through (b)(5) of this Section, a project sponsor may also request
additional allowances under the early adopter project category pursuant to
Section 225.560(e) based on the following formula:
A
=
1.0 + 0.10
×
Σ
A
i
Where:
A
=
The number of allowances for a particular project as
determined in subsections (b)(1) through (b)(5) of
this Section.
A
i
=
The number of allowances as determined in
subsection (b)(1), (b)(2), (b)(3), (b)(4) or (b)(5) of
this Section for a given project.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.570
Clean Air Set-Aside (CASA) Applications
a)
A project sponsor may request allowances if the project commenced construction
on or after the dates listed in this subsection. The project sponsor may request
and be allocated allowances from more than one CASA category for a project, if
applicable.
1)
Demand side management, energy efficient new construction, and supply
side energy efficiency and conservation projects that commenced
construction on or after January 1, 2003;
2)
Fluidized bed coal combustion projects, highly efficient power generation
operations projects, or renewable energy emission units, that commenced
construction on or after January 1, 2001; and
3)
All other projects on or after July 1, 2006.
b)
Beginning with the 2009 control period and each control period thereafter, a
project sponsor may request allowances from the CASA. The application must be
submitted to the Agency by May 1 of the control period for which the allowances
are being requested.
c)
The allocation will be based on the electricity conserved or generated in the
control period preceding the calendar year in which the application is submitted.
To apply for a CAIR NO
x
Ozone Season allocation from the CASA, project
sponsors must provide the Agency with the following information:

123
1)
Identification of the project sponsor, including name, address, type of
organization, certification that the project sponsor has met the definition of
“project sponsor” as set forth in Section 225.130, and names of the
principals or corporate officials.
2)
The number of the CAIR NO
x
Ozone Season general or compliance
account for the project and the name of the associated CAIR account
representative.
3)
A description of the project or projects, location, the role of the project
sponsor in the projects, and a general explanation of how the amount of
energy conserved or generated was measured, verified, and calculated, and
the number of allowances requested with the supporting calculations. The
number of allowances requested will be calculated using the applicable
formula from Section 225.570(b).
4)
Detailed information to support the request for allowances, including the
following types of documentation for the measurement and verification of
the NO
x
emissions reductions, electricity generated, or electricity
conserved using established measurement verification procedures, as
applicable. The measurement and verification required will depend on the
type of project proposed.
A)
As applicable, documentation of the project’s base and control
period conditions and resultant base and control period energy
data, using the procedures and methods included in
M&V
Guidelines: Measurement and Verification for Federal Energy
Projects,
incorporated by reference in Section 225.140, or other
method approved by the Agency. Examples include:
i)
Energy consumption and demand profiles;
ii)
Occupancy type;
iii)
Density and periods;
iv)
Space conditions or plant throughput for each operating
period and season. (for example, in a building this would
include the light level and color, space temperature,
humidity and ventilation);
v)
Equipment inventory, nameplate data, location, and
condition; and
vi)
Equipment operating practices (schedules and set points,
actual temperatures/pressures);

124
B)
Emissions data, including, if applicable, CEMS data;
C)
Information for rated–energy efficiency, including supporting
documentation and calculations; and
D)
Electricity, in MWh, generated or conserved for the applicable
control period.
5)
Notwithstanding the requirements of subsection (c)(4) of this Section,
applications for fewer than five allowances may propose other reliable and
applicable methods of quantification acceptable to the Agency.
6)
Any additional information requested by the Agency to determine the
correctness of the requested number of allowances, including site
information, project specifications, supporting calculations, operating
procedures, and maintenance procedures.
7)
The following certification by the responsible official for the project
sponsor and the applicable CAIR account representative for the project:
“I am authorized to make this submission on behalf of the project sponsor
and the holder of the CAIR NO
x
Ozone Season general account or
compliance account for which the submission is made. I certify under
penalty of law that I have personally examined, and am familiar with, the
statements and information submitted in this application and all its
attachments. Based on my inquiry of those individuals with primary
responsibility for obtaining the information, I certify that the statements
and information are to the best of my knowledge and belief true, accurate,
and complete. I am aware that there are significant penalties for
submitting false statements and information or omitting required
statements and information.”
d)
A project sponsor may request allowances from the CASA for each project for a
total number of control periods not to exceed the number of control periods listed
in this subsection. After a project has been allocated allowances from the CASA,
subsequent requests for the project from the project sponsor must include the
information required by subsections (c)(1), (c)(2), (c)(3) and (c)(7) of this Section,
a description of any changes or further improvements made to the project, and
information specified in subsections (c)(5) and (c)(6) as specifically requested by
the Agency.
1)
For energy efficiency and conservation projects (except for efficient
operation and renewable energy projects), for a total of eight control
periods.

125
2)
For early adopter projects, for a total of ten control periods.
3)
For air pollution control equipment upgrades, for a total of 15 control
periods.
4)
For renewable energy projects, clean coal technology, and highly efficient
power generation projects, for each year that the project is in operation.
e)
A project sponsor must keep copies of all CASA applications and the
documentation used to support the application for at least five years.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
Section 225.575
Agency Action on Clean Air Set-Aside (CASA) Applications
a)
By September 1, 2009 and each September 1 thereafter, the Agency will
determine the total number of allowances that are approvable for allocation to
project sponsors based upon the applications submitted pursuant to Section
225.570.
1)
The Agency will determine the number of CAIR NO
x
Ozone Season
allowances that are approvable based on the formulas and the criteria for
such projects. The Agency will notify a project sponsor within 90 days
after receipt of an application if the project is not approvable, the number
of allowances requested is not approvable, or additional information is
needed by the Agency to complete its review of the application.
2)
If the total number of CAIR NO
x
Ozone Season allowances requested for
approved projects is less than or equal to the number of CAIR NO
x
Ozone
Season allowances in the CASA project category, the number of
allowances that are approved shall be allocated to each CAIR NO
x
Ozone
Season compliance or general account.
3)
If more CAIR NO
x
Ozone Season allowances are requested than the
number of CAIR NO
x
Ozone Season allowances in a given CASA project
category, allowances will be allocated on a pro-rata basis based on the
number of allowances available, subject to further adjustment as provided
for by subsection (b) of this Section. CAIR NO
x
Ozone Season
allowances will be allocated, transferred, or used as whole allowances.
The number of whole allowances will be determined by rounding down
for decimals less than 0.5 and rounding up for decimals of 0.5 or greater.
b)
For control periods 2011 and thereafter:

126
1)
If there are, after the completion of the procedures in subsection (a) of this
Section for a control period, any CAIR NO
x
Ozone Season allowances not
allocated to a CASA project for the control period, the remaining
allowances will accrue in each CASA project category up to twice the
number of allowances that are assigned to the project category for each
control period as set forth in Section 225.565 .
2)
If any allowances remain after allocations pursuant to subsection (a) of
this Section, the Agency will allocate these allowances pro-rata to projects
that received fewer allowances than requested, based on the number of
allowances not allocated but approved by the Agency for the project under
CASA. No project may be allocated more allowances than approved by
the Agency for the applicable control period.
3)
If any allowances remain after the allocation of allowances pursuant to
subsection (b)(2) of this Section, the Agency will then distribute pro-rata
the remaining allowances to project categories that have fewer than twice
the number of allowances assigned to the project category. The pro-rata
distribution will be based on the difference between two times the project
category and the number of allowances that remain in the project category.
4)
If allowances still remain undistributed after the allocations and
distributions in the subsections (b)(1) through (b)(3) are completed, the
Agency may elect to retire any CAIR NO
x
Ozone Season allowances that
have not been distributed to any CASA category, to continue progress
toward attainment or maintenance of the National Ambient Air Quality
Standards pursuant to the CAA.
(Source: Added at 31 Ill. Reg. ________________, effective ______________)
SUBPART F: COMBINED POLLUTANT STANDARDS
Section 225.600
Purpose
The purpose of this Subpart F is to allow an alternate means of compliance with the emissions
standards for mercury in Section 225.230(a) for specified EGUs through permanent shut-down,
installation of ACI, and the application of pollution control technology for NO
x
, PM, and SO
2
emissions that also reduce mercury emissions as a co-benefit and to establish permanent
emissions standards for those specified EGUs. Unless otherwise provided for in this Subpart F,
owners and operators of those specified EGUs are not excused from compliance with other
applicable requirements of Subparts B, C, D, and E.
(Source: Added at 31 Ill. Reg. ____________, effective _____________)

127
Section 225.605
Applicability
a)
As an alternative to compliance with the emissions standards of Section
225.230(a), the owner or operator of specified EGUs in this Subpart F located at
Fisk, Crawford, Joliet, Powerton, Waukegan, and Will County power plants may
elect for all of those EGUs as a group to demonstrate compliance pursuant to this
Subpart F, which establishes control requirements and emissions standards for
NO
x
, PM, SO
2
, and mercury. For this purpose, ownership of a specified EGU is
determined based on direct ownership, by holding a majority interest in a
company that owns the EGU or EGUs, or by the common ownership of the
company that owns the EGU, whether through a parent-subsidiary relationship, as
a sister corporation, or as an affiliated corporation with the same parent
corporation, provided that the owner or operator has the right or authority to
submit a CAAPP application on behalf of the EGU.
b)
A specified EGU is a coal-fired EGU listed in Appendix A, irrespective of any
subsequent changes in ownership of the EGU or power plant, the operator, unit
designation, or name of unit.
c)
The owner or operator of each of the specified EGUs electing to demonstrate
compliance with Section 225.230(a) pursuant to this Subpart must submit an
application for a CAAPP permit modification to the Agency, as provided for in
Section 225.220, that includes the information specified in Section 225.610 that
clearly states the owner’s or operator’s election to demonstrate compliance with
Section 225.230(a) pursuant to this Subpart F.
d)
If an owner or operator of one or more specified EGUs elects to demonstrate
compliance with Section 225.230(a) pursuant to this Subpart F, then all specified
EGUs owned or operated in Illinois by the owner or operator as of December 31,
2006, as defined in subsection (a) of this Section, are thereafter subject to the
standards and control requirements of this Subpart F. Such EGUs are referred to
as a Combined Pollutant Standard (CPS) group.
e)
If an EGU is subject to the requirements of this Section, then the requirements
apply to all owners and operators of the EGU, and to the CAIR designated
representative for the EGU.
(Source: Added at 31 Ill. Reg. ____________, effective _____________)
Section 225.610
Notice of Intent
The owner or operator of one or more specified EGUs that intends to comply with Section
225.230(a) by means of this Subpart F must notify the Agency of its intention on or before
December 31, 2007. The following information must accompany the notification:

128
a)
The identification of each EGU that will be complying with Section 225.230(a)
pursuant to this Subpart F, with evidence that the owner or operator has identified
all specified EGUs that it owned or operated in Illinois as of December 31, 2006,
and which commenced commercial operation on or before December 31, 2004;
b)
If an EGU identified in subsection (a) of this Section is also owned or operated by
a person different than the owner or operator submitting the notice of intent, a
demonstration that the submitter has the right to commit the EGU or authorization
from the responsible official for the EGU submitting the application; and
c)
A summary of the current control devices installed and operating on each EGU
and identification of the additional control devices that will likely be needed for
each EGU to comply with emission control requirements of this Subpart F.
(Source: Added at 31 Ill. Reg. ____________, effective _____________)
Section 225.615
Control Technology Requirements and Emissions Standards for Mercury
a)
Control Technology Requirements for Mercury.
1)
For each EGU in a CPS group other than an EGU that is addressed by
subsection (b) of this Section, the owner or operator of the EGU must
install, if not already installed, and properly operate and maintain, by the
dates set forth in subsection (a)(2) of this Section, ACI equipment
complying with subsections (g), (h), (i), (j), and (k) of this Section, as
applicable.
2)
By the following dates, for the EGUs listed in subsections (a)(2)(A) and
(B), which include hot and cold side ESPs, the owner or operator must
install, if not already installed, and begin operating ACI equipment or the
Agency must be given written notice that the EGU will be shut down on or
before the following dates:
A)
Fisk 19, Crawford 7, Crawford 8, Waukegan 7, and Waukegan 8
on or before July 1, 2008; and
B)
Powerton 5, Powerton 6, Will County 3, Will County 4, Joliet 6,
Joliet 7, and Joliet 8 on or before July 1, 2009.
b)
Notwithstanding subsection (a) of this Section, the following EGUs are not
required to install ACI equipment because they will be permanently shut down, as
addressed by Section 225.630, by the date specified:
1)
EGUs that are required to permanently shut down:

129
A)
On or before December 31, 2007, Waukegan 6; and
B)
On or before December 31, 2010, Will County 1 and Will County
2.
2)
Any other specified EGU that is permanently shut down by December 31,
2010.
c)
Beginning on January 1, 2015 and continuing thereafter, and measured on a
rolling 12-month basis (the initial period is January 1, 2015, through December
31, 2015, and, then, for every 12-month period thereafter), each specified EGU,
except Will County 3, shall achieve one of the following emissions standards:
1)
An emissions standard of 0.0080 lbs mercury/GWh gross electrical output;
or
2)
A minimum 90 percent reduction of input mercury.
d)
Beginning on January 1, 2016, and continuing thereafter, Will County 3 shall
achieve the mercury emissions standards of subsection (c) of this Section
measured on a rolling 12-month basis (the initial period is January 1, 2016
through December 31, 2016, and, then, for every 12-month period thereafter).
e)
At any time prior to the dates required for compliance in subsections (c) and (d)
of this Section, the owner or operator of a specified EGU, upon notice to the
Agency, may elect to comply with the emissions standards of subsection (c) of
this Section measured on a rolling 12-month basis for one or more EGUs. Once
an EGU is subject to the mercury emissions standards of subsection (c) of this
Section, it shall not be subject to the requirements of subsections (g), (h), (i), (j)
and (k) of this Section.
f)
Compliance with the mercury emissions standards or reduction requirement of
this Section must be calculated in accordance with Section 225.230(a) or (b).
g)
For each EGU for which injection of halogenated activated carbon is required by
subsection (a)(1) of this Section, the owner or operator of the EGU must inject
halogenated activated carbon in an optimum manner, which, except as provided in
subsection (h) of this Section, is defined as all of the following:
1)
The use of an injection system for effective absorption of mercury,
considering the configuration of the EGU and its ductwork;
2)
The injection of halogenated activated carbon manufactured by Alstom,
Norit, or Sorbent Technologies, or the injection of any other halogenated
activated carbon or sorbent that the owner or operator of the EGU has

130
demonstrated to have similar or better effectiveness for control of mercury
emissions; and
3)
The injection of sorbent at the following minimum rates, as applicable:
A)
For an EGU firing subbituminous coal, 5.0 lbs per million actual
cubic feet or, for any cyclone-fired EGU that will install a scrubber
and baghouse by December 31, 2012, and which already meets an
emission rate of 0.020 lb mercury/GWh gross electrical output or
at least 75 percent reduction of input mercury, 2.5 lbs per million
actual cubic feet;
B)
For an EGU firing bituminous coal, 10.0 lbs per million actual
cubic feet or, for any cyclone-fired EGU that will install a scrubber
and baghouse by December 31, 2012, and which already meets an
emission rate of 0.020 lb mercury/GWh gross electrical output or
at least 75 percent reduction of input mercury, 5.0 lbs per million
actual cubic feet;
C)
For an EGU firing a blend of subbituminous and bituminous coal,
a rate that is the weighted average of the rates specified in
subsections (g)(3)(A) and (B), based on the blend of coal being
fired; or
D)
A rate or rates set lower by the Agency, in writing, than the rate
specified in any of subsection (g)(3)(A), (B), or (C) of this Section
on a unit-specific basis, provided that the owner or operator of the
EGU has demonstrated that such rate or rates are needed so that
carbon injection will not increase particulate matter emissions or
opacity so as to threaten noncompliance with applicable
requirements for particulate matter or opacity.
4)
For purposes of subsection (g)(3) of this Section, the flue gas flow rate
must be determined for the point sorbent injection; provided that this flow
rate may be assumed to be identical to the stack flow rate if the gas
temperatures at the point of injection and the stack are normally within
100º F, or the flue gas flow rate may otherwise be calculated from the
stack flow rate, corrected for the difference in gas temperatures.
h)
The owner or operator of an EGU that seeks to operate an EGU with an activated
carbon injection rate or rates that are set on a unit-specific basis pursuant to
subsection (g)(3)(D) of this Section must submit an application to the Agency
proposing such rate or rates, and must meet the requirements of subsections (h)(1)
and (h)(2) of this Section, subject to the limitations of subsections (h)(3) and
(h)(4) of this Section:

131
1)
The application must be submitted as an application for a new or revised
federally enforceable operation permit for the EGU, and it must include a
summary of relevant mercury emissions data for the EGU, the unit-
specific injection rate or rates that are proposed, and detailed information
to support the proposed injection rate or rates; and
2)
This application must be submitted no later than the date that activated
carbon must first be injected. For example, the owner or operator of an
EGU that must inject activated carbon pursuant to subsection (a)(1) of this
Section must apply for unit-specific injection rate or rates by July 1, 2008.
Thereafter, the owner or operator may supplement its application; and
3)
Any decision of the Agency denying a permit or granting a permit with
conditions that set a lower injection rate or rates may be appealed to the
Board pursuant to Section 39 of the Act; and
4)
The owner or operator of an EGU may operate at the injection rate or rates
proposed in its application until a final decision is made on the application
including a final decision on any appeal to the Board.
i)
During any evaluation of the effectiveness of a listed sorbent, alternative sorbent,
or other technique to control mercury emissions, the owner or operator of an EGU
need not comply with the requirements of subsection (g) of this Section for any
system needed to carry out the evaluation, as further provided as follows:
1)
The owner or operator of the EGU must conduct the evaluation in
accordance with a formal evaluation program submitted to the Agency at
least 30 days prior to commencement of the evaluation;
2)
The duration and scope of the evaluation may not exceed the duration and
scope reasonably needed to complete the desired evaluation of the
alternative control techniques, as initially addressed by the owner or
operator in a support document submitted with the evaluation program;
and
3)
The owner or operator of the EGU must submit a report to the Agency no
later than 30 days after the conclusion of the evaluation that describes the
evaluation conducted and which provides the results of the evaluation; and
4)
If the evaluation of alternative control techniques shows less effective
control of mercury emissions from the EGU than was achieved with the
principal control techniques, the owner or operator of the EGU must
resume use of the principal control techniques. If the evaluation of the
alternative control technique shows comparable effectiveness to the
principal control technique, the owner or operator of the EGU may either
continue to use the alternative control technique in a manner that is at least

132
as effective as the principal control technique or it may resume use of the
principal control technique. If the evaluation of the alternative control
technique shows more effective control of mercury emissions than the
control technique, the owner or operator of the EGU must continue to use
the alternative control technique in a manner that is more effective than
the principal control technique, so long as it continues to be subject to this
Section.
j)
In addition to complying with the applicable recordkeeping and monitoring
requirements in Sections 225.240 through 225.290, the owner or operator of an
EGU that elects to comply with Section 225.230(a) by means of this Subpart F
must also comply with the following additional requirements:
1)
For the first 36 months that injection of sorbent is required, it must
maintain records of the usage of sorbent, the exhaust gas flow rate from
the EGU, and the sorbent feed rate, in pounds per million actual cubic feet
of exhaust gas at the injection point, on a weekly average;
2)
After the first 36 months that injection of sorbent is required, it must
monitor activated sorbent feed rate to the EGU, flue gas temperature at the
point of sorbent injection, and exhaust gas flow rate from the EGU,
automatically recording this data and the sorbent carbon feed rate, in
pounds per million actual cubic feet of exhaust gas at the injection point,
on an hourly average; and
3)
If a blend of bituminous and subbituminous coal is fired in the EGU, it
must keep records of the amount of each type of coal burned and the
required injection rate for injection of activated carbon on a weekly basis.
k)
In addition to complying with the applicable reporting requirements in Sections
225.240 through 225.290, the owner or operator of an EGU that elects to comply
with Section 225.230(a) by means of this Subpart F must also submit quarterly
reports for the recordkeeping and monitoring conducted pursuant to subsection (j)
of this Section.
(Source: Added at 31 Ill. Reg. ____________, effective _____________)
Section 225.620
Emissions Standards for NO
x
and SO
2
a)
Emissions Standards for NO
x
and Reporting Requirements.
1)
Beginning with calendar year 2012 and continuing in each calendar year
thereafter, the CPS group, which includes all specified EGUs that have not
been permanently shut down by December 31 before the applicable

133
calendar year, must comply with a CPS group average annual NO
x
emissions rate of no more than 0.11 lbs/mmBtu.
2)
Beginning with ozone season control period 2012 and continuing in each
ozone season control period (May 1 through September 30) thereafter, the
CPS group, which includes all specified EGUs that have not been
permanently shut down by December 31 before the applicable ozone
season, must comply with a CPS group average ozone season NO
x
emissions rate of no more than 0.11 lbs/mmBtu.
3)
The owner or operator of the specified EGUs in the CPS group must file,
not later than one year after startup of any selective SNCR on such EGU, a
report with the Agency describing the NO
x
emissions reductions that the
SNCR has been able to achieve.
b)
Emissions Standards for SO
2
. Beginning in calendar year 2013 and continuing in
each calendar year thereafter, the CPS group must comply with the applicable
CPS group average annual SO
2
emissions rate listed as follows:
year
lbs/mmBtu
2013
0.44
2014
0.41
2015
0.28
2016
0.195
2017
0.15
2018
0.13
2019
0.11
c)
Compliance with the NO
x
and SO
2
emissions standards must be demonstrated in
accordance with Sections 225.310, 225.410, and 225.510. The owner or operator
of the specified EGUs must complete the demonstration of compliance pursuant
to Section 225.635(c) before March 1 of the following year for annual standards
and before November 30 of the particular year for ozone season control periods
(May 1 through September 30) standards, by which date a compliance report must
be submitted to the Agency.
d)
The CPS group average annual SO
2
emission rate, annual NO
x
emission rate and
ozone season NO
x
emission rates shall be determined as follows:
n
n
ER
avg
=
Σ
(SO
2i
or NO
xi
tons)
Σ
(HI
i
)
i=1
i=1
Where:

134
ER
avg
=
average annual or ozone season emission
rate in lbs/mmBbtu of all EGUs in the CPS
group.
HI
i
=
heat input for the annual or ozone control
period of each EGU, in mmBtu.
SO
2i
=
actual annual SO
2
tons of each EGU in the
CPS group.
NO
xi
=
actual annual or ozone season NO
x
tons of
each EGU in the CPS group.
n
=
number of EGUs that are in the CPS group
i
=
each EGU in the CPS group.
(Source: Added at 31 Ill. Reg. ____________, effective _____________)
Section 225.625
Control Technology Requirements for NO
x
, SO
2
, and PM Emissions
a)
Control Technology Requirements for NO
x
and SO
2
.
1)
On or before December 31, 2013, the owner or operator must either
permanently shut down or install and have operational FGD equipment on
Waukegan 7;
2)
On or before December 31, 2014, the owner or operator must either
permanently shut down or install and have operational FGD equipment on
Waukegan 8;
3)
On or before December 31, 2015, the owner or operator must either
permanently shut down or install and have operational FGD equipment on
Fisk 19;
4)
If Crawford 7 will be operated after December 31, 2018, and not
permanently shut down by this date, the owner or operator must:
A)
On or before December 31, 2015, install and have operational
SNCR or equipment capable of delivering essentially equivalent
NO
x
reductions on Crawford 7; and
B)
On or before December 31, 2018, install and have operational FGD
equipment on Crawford 7;
5)
If Crawford 8 will be operated after December 31, 2017 and not
permanently shut down by this date, the owner or operator must:

135
A)
On or before December 31, 2015, install and have operational
SNCR or equipment capable of delivering essentially equivalent
NO
x
emissions reductions on Crawford 8; and
B)
On or before December 31, 2017, install and have operational FGD
equipment on Crawford 8.
b)
Other Control Technology Requirements for SO
2
. Owners or operators of
specified EGUs must either permanently shut down or install FGD equipment on
each specified EGU (except Joliet 5), on or before December 31, 2018, unless an
earlier date is specified in subsection (a) of this Section.
c)
Control Technology Requirements for PM. The owner or operator of the two
specified EGUs listed in this subsection that are equipped with a hot-side ESP
must replace the hot-side ESP with a cold-side ESP, install an appropriately
designed fabric filter, or permanently shut down the EGU by the dates specified.
Hot-side ESP means an ESP on a coal-fired boiler that is installed before the
boiler's air-preheater where the operating temperature is typically at least 550º F,
as distinguished from a cold-side ESP that is installed after the air pre-heater
where the operating temperature is typically no more than 350º F.
1)
Waukegan 7 on or before December 31, 2013; and
2)
Will County 3 on or before December 31, 2015.
d)
Beginning on December 31, 2008, and annually thereafter up to and including
December 31, 2015, the owner or operator of the Fisk power plant must submit in
writing to the Agency a report on any technology or equipment designed to affect
air quality that has been considered or explored for the Fisk power plant in the
preceding 12 months. This report will not obligate the owner or operator to install
any equipment described in the report.
e)
Notwithstanding 35 Ill. Adm. Code 201.146(hhh), until an EGU has complied
with the applicable requirements of subsections 225.625(a), (b), and (c), the
owner or operator of the EGU must obtain a construction permit for any new or
modified air pollution control equipment that it proposes to construct for control
of emissions of mercury, NO
x
, PM, or SO
2
.
(Source: Added at 31 Ill. Reg. ____________, effective _____________)
Section 225.630
Permanent Shut Downs
a)
The owner or operator of the following EGUs must permanently shut down the
EGU by the dates specified:

136
1)
Waukegan 6 on or before December 31, 2007; and
2)
Will County 1 and Will County 2 on or before December 31, 2010.
b)
No later than 8 months before the date that a specified EGU will be permanently
shut down, the owner or operator must submit a report to the Agency that includes
a description of the actions that have already been taken to allow the shutdown of
the EGU and a description of the future actions that must be accomplished to
complete the shutdown of the EGU, with the anticipated schedule for those
actions and the anticipated date of permanent shutdown of the unit.
c)
No later than six months before a specified EGU will be permanently shut down,
the owner or operator shall apply for revisions to the operating permits for the
EGU to include provisions that terminate the authorization to operate the unit on
that date.
d)
If after applying for or obtaining a construction permit to install required control
equipment, the owner or operator decides to permanently shut-down a Specified
EGU rather than install the required control technology, the owner or operator
must immediately notify the Agency in writing and thereafter submit the
information required by subsections (b) and (c) of this Section.
e)
Failure to permanently shut down a specified EGU by the required date shall be
considered separate violations of the applicable emissions standards and control
technology requirements of this Subpart F for NO
x
, PM, SO
2
, and mercury.
(Source: Added at 31 Ill. Reg. ____________, effective _____________)
Section 225.635
Requirements for CAIR SO
2
, CAIR NO
x
, and CAIR NO
x
Ozone Season
Allowances
a)
The following requirements apply to the owner, the operator and the designated
representative with respect to CAIR SO
2
, CAIR NO
x
, and CAIR NO
x
Ozone
Season allowances:
1)
The owner, operator, and CAIR designated representative of specified
EGUs in a CPS group is permitted to sell, trade, or transfer SO
2
and NO
x
emissions allowances of any vintage owned, allocated to, or earned by the
specified EGUs (the "CPS allowances") to its affiliated Homer City,
Pennsylvania generating station for as long as the Homer City Station
needs the CPS allowances for compliance.
2)
When and if the Homer City Station no longer requires all of the CPS
allowances, the owner, operator, or CAIR designated representative of

137
specified EGUs in CPS group may sell any and all remaining CPS
allowances, without restriction, to any person or entity located anywhere,
except that the owner or operator may not directly sell, trade, or transfer
CPS allowances to a CAIR NO
x
or CAIR SO
2
unit located in Ohio,
Indiana, Illinois, Wisconsin, Michigan, Kentucky, Missouri, Iowa,
Minnesota, or Texas.
3)
In no event shall this subsection (a) require or be interpreted to require any
restriction whatsoever on the sale, trade, or exchange of the CPS
allowances by persons or entities who have acquired the CPS allowances
from the owner, operator, or CAIR designated representative of specified
EGUs in a CPS group.
b)
The owner, operator, and CAIR designated representative of EGUs in a specified
CPS group is prohibited from purchasing or using CAIR SO
2
, CAIR NO
x
, and
CAIR NO
x
Ozone Season allowances for the purposes of meeting the SO
2
and
NO
x
emissions standards set forth in Section 225.620.
c)
Before March 1, 2010, and continuing each year thereafter, the CAIR designated
representative of the EGUs in a CPS group must submit a report to the Agency
that demonstrates compliance with the requirements of this Section for the
previous calendar year and ozone season control period (May 1 through
September 30), and includes identification of any CAIR allowances that have
been used for compliance with the CAIR Trading Programs as set forth in
Subparts C, D, and E, and any CAIR allowances that were sold, gifted, used,
exchanged, or traded. A final report must be submitted to the Agency by August
31 of each year, providing either verification that the actions described in the
initial report have taken place, or, if such actions have not taken place, an
explanation of the changes that have occurred and the reasons for such changes.
(Source: Added at 31 Ill. Reg. ____________, effective _____________)
Section 225.640
Clean Air Act Requirements
The SO
2
emissions rates set forth in this Subpart F shall be deemed to be best available retrofit
technology (“BART”) under the Visibility Protection provisions of the CAA (42 USC 7491),
reasonably available control technology (“RACT”) and reasonably available control measures
(“RACM”) for achieving fine particulate matter (“PM
2.5
”) requirements under NAAQS in effect
on August 31, 2007, as required by the CAA (42 USC 7502). The Agency may use the SO
2
and
NO
x
emissions reductions required under this Subpart F in developing attainment demonstrations
and demonstrating reasonable further progress for PM
2.5
and 8 hour ozone standards, as required
under the CAA. Furthermore, in developing rules, regulations, or State Implementation Plans
designed to comply with PM
2.5
and 8 hour ozone NAAQS, the Agency, taking into account all
emission reduction efforts and other appropriate factors, will use best efforts to seek SO
2
and
NO
x
emissions rates from other EGUs that are equal to or less than the rates applicable to the

138
CPS group and will seek SO
2
and NO
x
reductions from other sources before seeking additional
emissions reductions from any EGU in the CPS group.
(Source: Added at 31 Ill. Reg. ____________, effective _____________)

139
225.APPENDIX A
Specified EGUs for Purposes of Subpart F (Midwest Generation’s Coal-
Fired Boilers as of July 1, 2006)
Plant
Permit
Boiler
Permit designation
Subpart F
Number
Designation
Crawford
031600AIN
7
Unit 7 Boiler BLR1
Crawford 7
8
Unit 8 Boiler BLR2
Crawford 8
Fisk
031600AMI
19
Unit 19 Boiler BLR19
Fisk 19
Joliet
197809AAO
71
Unit 7 Boiler BLR71
Joliet 7
72
Unit 7 Boiler BLR72
Joliet 7
81
Unit 8 Boiler BLR81
Joliet 8
82
Unit 8 Boiler BLR82
Joliet 8
5
Unit 6 Boiler BLR5
Joliet 6
Powerton
179801AAA
51
Unit 5 Boiler BLR 51
Powerton 5
52
Unit 5 Boiler BLR 52
Powerton 5
61
Unit 6 Boiler BLR 61
Powerton 6
62
Unit 6 Boiler BLR 62
Powerton 6
Waukegan
097190AAC
17
Unit 6 Boiler BLR17
Waukegan 6
7
Unit 7 Boiler BLR7
Waukegan 7
8
Unit 8 Boiler BLR8
Waukegan 8
Will County 197810AAK
1
Unit 1 Boiler BLR1
Will County 1
2
Unit 2 Boiler BLR2
Will County 2
3
Unit 3 Boiler BLR3
Will County 3
4
Unit 4 Boiler BLR4
Will County 4
(Source: Added at 31 Ill. Reg. ____________, effective _____________)
IT IS SO ORDERED.
Section 41(a) of the Environmental Protection Act provides that final Board orders may
be appealed directly to the Illinois Appellate Court within 35 days after the Board serves the
order. 415 ILCS 5/41(a) (2006);
see also
35 Ill. Adm. Code 101.300(d)(2), 101.906, 102.706.
Illinois Supreme Court Rule 335 establishes filing requirements that apply when the Illinois
Appellate Court, by statute, directly reviews administrative orders. 172 Ill. 2d R. 335. The
Board’s procedural rules provide that motions for the Board to reconsider or modify its final
orders may be filed with the Board within 35 days after the order is received. 35 Ill. Adm. Code
101.520;
see also
35 Ill. Adm. Code 101.902, 102.700, 102.702.

140
I, John Therriault, Assistant Clerk of the Illinois Pollution Control Board, certify that the
Board adopted the above opinion and order on August 23, 2007, by a vote of 4-0.
___________________________________
John Therriault, Assistant Clerk
Illinois Pollution Control Board

Back to top