(A) General provisions. In lieu of complying
with the applicable emission limitation in rule
3745-103-57,
3745-103-58,
or
3745-103-59
of the Administrative Code, any affected units subject to such emission
limitation, under control of the same owner or operator, and having the same
designated representative may average their NO
x
emissions under an averaging plan approved under this rule.
(1) Each affected unit included in an
averaging plan for phase II shall be a boiler subject to an emission limitation
in rule
3745-103-57,
3745-103-58,
or
3745-103-59
of the Administrative Code for all years for which the unit is included in the
plan.
(2) Each unit included in an
averaging plan shall have an alternative contemporaneous annual emission
limitation (pound per MMBtu) and can only be included in one averaging
plan.
(3) Each unit included in an
averaging plan shall have a minimum allowable annual heat input value (MMBtu),
if it has an alternative contemporaneous annual emission limitation more
stringent than that unit's applicable emission limitation under rule
3745-103-57,
3745-103-58,
or
3745-103-59
of the Administrative Code, and a maximum allowable annual heat input value, if
it has an alternative contemporaneous annual emission limitation less stringent
than that unit's applicable emission limitation under rule
3745-103-57,
3745-103-58,
or
3745-103-59
of the Administrative Code.
(4) The
Btu-weighted annual average emission rate for the units in an averaging plan
shall be less than or equal to the Btu-weighted annual average emission rate
for the same units had they each been operated, during the same period of time,
in compliance with the applicable emission limitations in rule
3745-103-57,
3745-103-58,
or
3745-103-59
of the Administrative Code.
(5) In
order to demonstrate that the proposed plan is consistent with paragraph (A)(4)
of this rule, the alternative contemporaneous annual emission limitations and
annual heat input values assigned to the units in the proposed averaging plan
shall meet the following requirement:
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where:
RLi = alternative contemporaneous annual
emission limitation for unit i, in pound per MMBtu, as specified in the
averaging plan;
Rli = applicable emission limitation for
unit i, in pound per MMBtu, as specified in rule
3745-103-57,
3745-103-58,
or
3745-103-59
of the Administrative Code except that for early election units, which may be
included in an averaging plan only on or after January 1, 2000,
Rli shall equal the most stringent applicable emission
limitation under rule
3745-103-57
or
3745-103-59
of the Administrative Code;
HIi = annual heat input for unit i, in
MMBtu, as specified in the averaging plan;
n = number of units in the averaging plan.
(6) For units with an alternative emission
limitation, R
Li shall equal the applicable emissions
limitation under rule
3745-103-57,
3745-103-58,
or
3745-103-59
of the Administrative Code, not the alternative emissions limitation.
(7) No unit may be included in more than one
averaging plan.
(C) Contents of NO
x
averaging plan. A complete NO
x averaging plan shall
include
all of the following elements in a format
prescribed by the director and the USEPA:
(1)
Identification of each unit in the plan
;
.
(2) Each unit's applicable emission
limitation as determined by rule 3745-103-
04
57,
3745-103-
05
58, or 3745-103-
06
59 of the
Administrative Code
;
.
(3) The
alternative contemporaneous annual emission limitation for each unit (in pound
per MMBtu). If any of the units identified in the NO
x
averaging plan utilize a common stack pursuant to
40
CFR
75.17(a)(2)(i)(b), the
same alternative contemporaneous emission limitation shall be assigned to each
such unit but different heat input limits may be assigned
;
.
(4) The annual heat input limit for each unit
(in MMBtu)
;
.
(5) The
calculation for equation 1 in paragraph (A)(5) of this rule
;
.
(6) The calendar years for which the plan
will be in effect
; and
.
(7) The
special provisions pursuant to paragraph (D)(1) of this rule.
(D) Special provisions.
(1) Emission limitations. Each affected unit
in an approved averaging plan is in compliance with the acid rain emission
limitation for NO
x under the plan only if
one of the following requirements are met:
(a) For each unit, the unit's actual annual
average emission rate for the calendar year, in pound per MMBtu, is less than
or equal to its alternative contemporaneous annual emission limitation in the
averaging plan
; and
the following apply:
(i) For each unit with an alternative
contemporaneous emission limitation less stringent than the applicable emission
limitation in rule 3745-103-57, 3745-103-58, or
3745-103-59 of the
Administrative Code, the actual annual heat input for the calendar year does
not exceed the annual heat input limit in the averaging plan
;
.
(ii) For
each unit with an alternative contemporaneous annual emission limitation more
stringent than the applicable emission limitation in rule 3745-103-57,
3745-103-58, or
3745-103-59 of the Administrative Code, the actual annual heat
input for the calendar year is not less than the annual heat input limit in the
averaging plan
; or
.
(b) If one or more of the units does not meet
the requirements under paragraph (D)(1)(a)(i) of this rule, the designated
representative shall demonstrate, in accordance with paragraph (D)(1)(b)(i) of
this rule (equation 2) that the actual Btu-weighted annual average emission
rate for the units in the plan is less than or equal to the Btu-weighted annual
average rate for the same units had they each been operated, during the same
period of time, in compliance with the applicable emission limitations in rule
3745-103-57,
3745-103-58,
or 3745-104-59 of the Administrative Code.
(i) A group showing of compliance shall be
made based on the following equation:
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where,
Rai = actual annual average emission
rate for unit i, in pound per MMBtu, as determined using the procedures in 40
CFR Part 75. For units in an averaging plan utilizing a common stack pursuant
to
40
CFR 75.17(a)(2)(i)(B), use
the same NOx emission rate value for each unit utilizing
the common stack, and calculate this value in accordance with appendix F of 40
CFR Part 75 ;
Rli = applicable annual emission
limitation for unit i, in pound per MMBtu, as specified in rule 3745-103-57,
3745-103-58, or 3745-103-59 of the Administrative Code, except that for early
election units, which may be included in an averaging plan only on or after
January 1, 2000, Rli shall equal the most stringent
applicable emission limitation under rule 3745-103-04 or 3745-103-06 of the
Administrative Code;
HIai = actual annual heat input for unit
i, in MMBtu, as determined using the procedures in 40 CFR Part 75;
n = number of units in the averaging plan.
(ii) For units with an alternative emission
limitation, R
li shall equal the applicable emission
limitation under rule 3745-103-57, 3745-103-58, or
3745-103-59 of the
Administrative Code, not the alternative emission limitation.
(c) If there is a successful group
showing of compliance under paragraph (D)(1) (b)(i) of this rule for a calendar
year, then all units in the averaging plan shall be deemed to be in compliance
for that year with their alternative contemporaneous emission limitations and
annual heat input limits under paragraph (D)(1)(a) of this rule.
(2) Liability. The owners and
operators of a unit governed by an approved averaging plan shall be liable for
any violation of the plan or this rule at that unit or any other unit in the
plan, including liability for fulfilling the obligations specified in 40 CFR
Part
77 and sections 113 and 411 of the Clean Air Act.
(3) Withdrawal or termination. The designated
representative may submit a notification to terminate an approved averaging
plan in accordance with paragraph (C) of rule
3745-103-09 of the Administrative
Code, no later than October first of the calendar year for which the plan is to
be withdrawn or terminated.
