Acid Rain Program: Permits Regulation General Provisions and Continuous Emission Monitoring Rule Technical Revisions

Note: EPA no longer updates this information, but it may be useful as a reference or resource.

[Federal Register: May 17, 1995 (Volume 60, Number 95)]
[Rules and Regulations]
[Page 26509-26558]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]

ENVIRONMENTAL PROTECTION AGENCY
40 CFR Parts 9, 72, and 75
[FRL-5203-3]

Acid Rain Program: Permits Regulation General Provisions and
Continuous Emission Monitoring Rule Technical Revisions

AGENCY: Environmental Protection Agency (EPA).
ACTION: Direct final rule.

SUMMARY: Title IV of the Clean Air Act (the Act), as amended by the
Clean Air Act Amendments of 1990, authorizes the Environmental
Protection Agency (EPA or Agency) to establish the Acid Rain Program.
The program sets emissions limitations to reduce acidic deposition and
its serious, adverse effects on natural resources, ecosystems,
materials, visibility, and public health. On January 11, 1993, the
Agency promulgated final rules under title IV. Several parties filed
petitions for review of the rules. On April 17, 1995, the EPA and the
parties signed a settlement agreement addressing continuous emission
monitoring (CEM) issues.
This direct final rule would amend the Continuous Emission
Monitoring (CEM) provisions and the General Provisions of the Acid Rain
Program for the purpose of making the implementation of the program
simpler, streamlined, and more efficient for both the EPA and industry.
The rule amendment is being issued as a direct final rule because the
corrections are technical in nature and address various implementation
issues without major changes in policy. Furthermore, the rule
amendments are consistent with the April 17, 1995 settlement agreement.
Therefore, EPA believes these amendments are noncontroversial and has
provided for the amendments to be effective 60 days after publication
in the Federal Register.

DATES: Effective Dates. This final rule will be effective July 17,
1995. However, if significant adverse comments on portions of the rule
are received by June 16, 1995, then the effective date of those
provisions will be delayed, EPA will withdraw those portions of the
rule, and timely notice will be published in the Federal Register.
Sections 75.50, 75.51 and 75.52; redesignated section 2.4.3.1 of
appendix D of part 75; and sections 4.3.1, 4.3.2, 4.3.3, 4.4.3, 5.3.
and 5.4 of appendix F of part 75 are effective through December 31,
1995. The incorporation by reference of certain publications listed in
the regulation is approved by the Director of the Federal Register as
of July 17, 1995.
Compliance Dates. Information on compliance dates is in the
Supplementary Information section of this preamble and in appendix J of
part 75.

ADDRESSES: Any written comments must be identified with Docket No. A-
94-16, must be identified as comments on the direct final rule and
companion proposal, and must be submitted in duplicate to: EPA Air
Docket (6102), Environmental Protection Agency, 401 M Street SW,
Washington, DC 20460. The docket is available for public inspection and
copying between 8:30 a.m. and 3:30 p.m., Monday through Friday, at the
address given above. A reasonable fee may be charged for copying. A
detailed rationale for the revisions is set forth in the technical
support document for the direct final rule, which can be obtained by
writing to the Air Docket at the address given above.

FOR FURTHER INFORMATION CONTACT: Margaret Sheppard, Acid Rain Division
(6204J), U.S. Environmental Protection Agency, 401 M Street SW,
Washington, DC 20460, telephone number (202) 233-9180.

SUPPLEMENTARY INFORMATION: The EPA is revising the CEM provisions as a
direct final rule without prior proposal because the Agency views these
revisions as noncontroversial and anticipates no significant adverse
comments. The EPA is also publishing a companion proposed rule to this
direct final rule in this issue of the Federal Register in order to
take comment on provisions of the direct final rule. If EPA does
receive significant adverse comments, EPA will publish a document in
the Federal Register withdrawing portions of the direct final rule. In
addition, EPA is publishing an interim final rule in today's Federal
Register to address other monitoring issues that may be controversial.
The EPA will not institute a second comment period on the proposed
rule, on the interim final rule, or on any subsequent final rule. Any
parties interested in commenting on these revisions to parts 72 and 75
should do so at this time.
Significant adverse comment will be addressed in a subsequent final
rulemaking document. If EPA withdraws portions of the direct final
rule, EPA will accept comments for 15 days after publication of the
notice of withdrawal in order to receive additional comments on
withdrawn portions of the rule. If the effective date is delayed,
timely notice will be published in the Federal Register.
The owner or operator shall comply with the following requirements
from July 17, 1995 through December 31, 1995: for the recordkeeping
requirements of subpart F of part 75, by following either Secs. 75.50,
75.51 and 75.52 or Secs. 75.54, 75.55 and 75.56; for the missing data
substitution requirements for carbon dioxide (CO<INF>2) and heat input,
by following either Secs. 75.35 and 75.36 or sections 4.3.1 through
4.3.3, section 4.4.3 and section 5.3 and 5.4 of appendix F of part 75;
and for the missing data substitution requirements for fuel flowmeters
by following either section 2.4.3.1 or sections 2.4.3.2 and 2.4.3.3 of
appendix D of part 75.
On or after January 1, 1996, the owner or operator shall comply
with the following requirements: for the recordkeeping requirements of
subpart F of part 75, by meeting the requirements of Secs. 75.54,
75.55, and 75.56; and for the missing data substitution requirements
for CO<INF>2 concentration, heat input and fuel flowmeters by meeting
the requirements of Secs. 75.35 and 75.36 and sections 2.4.3.2 through
2.4.3.3 of appendix D of part 75.
The EPA has been engaged in settlement discussions with several
parties who challenged certain provisions of the Acid Rain CEM rules
promulgated on January 11, 1993. [See Environmental Defense Fund v.
Browner, No. 93-1203 and consolidated cases, ``Complex'' (D.C. Cir.
filed March 12, 1993).] Although the parties have been able to reach
agreement on a number of issues, which are addressed in this direct
final rulemaking, some additional issues remain outstanding. The
outstanding issues, unlike the noncontroversial and routine technical
corrections and other amendments addressed by this direct final rule,
may not be considered noncontroversial and therefore are being
addressed separately in an interim final rule, published elsewhere in
this Federal Register.
I. Acid Rain Program Background

A. Rulemaking Background

On January 11, 1993, EPA promulgated the ``core'' regulations that
implemented the major provisions of title IV of the Clean Air Act (CAA
or the Act), as amended November 15, 1990, including the General
Provisions of the Permits Regulation (40 CFR part 72) and the CEM
regulation at 40 CFR part 75 authorized under Sections 412 and 821 of
the Act. The CEM rule specifies how each affected utility unit must
install a system to continuously monitor the [[Page 26511]] emissions
and to collect, record, and report emissions data to ensure that the
mandated reductions in sulfur dioxide (SO₂) and nitrogen dioxide
(NO_X) emissions are achieved, that opacity and CO<INF>2 emissions
are measured, and that SO₂ emissions are accurately measured so
that the allowance system functions in an orderly manner. Technical
corrections were published on June 23, 1993 and July 30, 1993. An
amendment to the certification deadline for NO_Xand CO<INF>2
monitoring for oil-fired units and gas-fired units was published on
August 18, 1994.
Since the CEM rule was promulgated, the operation of Phase I
utility units have essentially completed the first stage of
implementation of the rule, having submitted monitoring plans,
conducted certification testing, submitted certification applications,
and submitted their first quarterly reports. In addition, many Phase II
utility units also have begun implementation. During early
implementation, many technical issues have been raised, including many
minor issues which could be addressed by technical corrections. The
preamble discussion that follows outlines the changes that are
contained in today's direct final rulemaking that will make these
technical corrections.

B. Implementation Background

The EPA held three Acid Rain Implementation Conferences (January 5-
6, 1993; January 25-26, 1993; and March 16-17, 1993). In these public
meetings, EPA staff presented an overview of the Acid Rain Program and
Acid Rain core rules. Some of the changes in today's revised rule
resulted from issues raised by the public at these conferences.
In order to respond to a multitude of questions raised by industry,
EPA instituted a new ``Acid Rain monitoring'' section on the Agency's
computerized Technology Transfer Network Bulletin Board System
(TTNBBS). This bulletin board can be accessed by computer modem at
(919) 541-5742. The EPA's Acid Rain Division periodically updates this
section of the bulletin board with notices of meetings, interpretations
of part 75, policy determinations, and other information relevant to
State environmental regulators and the regulated community. In
particular, EPA has published three installments of commonly asked
questions and their answers in the ``Acid Rain CEM (Part 75) Policy
Manual'' (Docket Item I-D-54). Many of these policy determinations and
clarifications of part 75 are incorporated into today's revised rule.
Some standard forms have been revised to be consistent with the
changes in this rulemaking. Packages of revised standard forms, with
instructions, will contain revised monitoring plan forms, certification
forms, and electronic data reporting format, and will be available from
EPA in electronic form from the TTNBBS by using computer modem at (919)
541-5742 or on paper by calling the Acid Rain Hotline at (202) 233-
9620.

II. Changes to Parts 72 and 75--General Provisions of the Permits
Regulation and Continuous Emission Monitoring

Several of the definitions in Sec. 72.2 related to monitoring have
been revised. As explained below, EPA edited these definitions and
added a few definitions to explain or clarify new or existing terms in
part 75.
The changes to part 75 are clarifications intended to ease
implementation, and do not constitute major policy changes. The most
significant changes in today's revised part 75 concern deadlines for
completing certification testing, the procedures for exceptions to the
use of CEMS found in appendices D and E, and the provisions for
determining the span of NO_Xpollutant concentration monitors. The
EPA has added to the list of certification testing deadlines to apply
to more types of units that might require certification after the
statutory deadline for installation of CEMS. In addition, the Agency
rewrote major portions of appendices D and E to make them easier to
understand and to implement. Changes to appendix E also substantially
reduce the time and difficulty of testing required to obtain NO_X
emission rate data. Finally, the procedures for determining NO_X
span have been revised so that utilities with units having low NO_X
emission rates may select a single span representative of the situation
at their plant, rather than being required to use both a high scale and
a low scale measurement range. A list of compliance dates for the
revised recordkeeping requirements and missing data substitution
procedures are included in the new appendix J.
The rationale and effect of the revisions to parts 72 and 75 are
discussed in detail in a technical support document. This document may
be obtained from the EPA Air Docket as Docket Item II-F-2, ``Technical
Support Document (Attachment A),'' in Docket No. A-94-16. In addition,
EPA is publishing this document under the CAA Title IV portion of EPA's
TTNBBS. This bulletin board can be accessed by computer modem at (919)
541-5742. The topics in the rule revisions discussed in the Technical
Support Document are as follows:

I. Glossary of Terms and Abbreviations
II. Acid Rain Program Background
A. Rulemaking Background
B. Implementation Background
III. Changes to Part 72--Permits Regulation General Provisions
A. Fuel-related Definitions
B. Operating Hour Definitions
C. Calibration Gas Definitions
D. Bypass Operating Quarter, Unit Operating Quarter
E. Ozone Nonattainment Area, Ozone Transport Region
F. Other Definitions
IV. Changes to Part 75--Continuous Emission Monitoring
A. General Revisions
B. Changes to Subpart A, General

Certification Deadlines
a. Shutdown Units
b. New Stacks or Flue Gas Desulfurization Systems
c. Backup Fuel and Emergency Fuel
d. Newly Affected Units
e. EIA Forms
f. Emissions Accounting Prior to Certification
Incorporation by Reference
Relative Accuracy and Availability Performance Analysis
C. Changes to Subpart B, Monitoring Provisions
Calculation of Average Emissions and Opacity Data
Peaking Unit Definition and Applicability of Appendix E
SO₂ Monitoring During Combustion of Gas for Units With
SO₂ CEMS
Monitoring Common Stacks, Bypass Stacks, and Multiple Stacks
a. Common Stack Monitoring
b. Multiple Stacks--NO<INF>XMonitoring
c. Bypass Stack Monitoring
Determining Emissions From Qualifying Phase I Technologies
D. Changes to Subpart C, Operation and Maintenance Requirements
Certification Procedures for CEMS
a. Initial Certification and Recertification
b. Loss of Certification Procedures
c. Submission and Retesting Deadlines
d. Audit Decertification
e. Monitoring Systems To Be Certified
f. Use of Backup or Portable Monitoring Systems
Certification Procedures for Alternative Monitoring Systems
Certification Procedures for Excepted Monitoring Systems
E. Changes to Subpart D, Missing Data Procedures
Missing Data Procedures for Peaking Units
Addition to NO_Xand Flow Missing Data Procedures
Changes to CO<INF>2 and Heat Input Procedures
Missing Data Procedures for Units With Add-on Emission
Controls
SO₂ Concentration Missing Data During Gas Combustion
F. Changes to Subpart E, Alternative Monitoring Systems
[[Page 26512]]
G. Changes to Subpart F, Recordkeeping Requirements
Additional Sections 75.54, 75.55 and 75.56
Changes to Emission Data Records
Certification Records
Monitoring Plans
Records File
H. Changes to Subpart G, Reporting Requirements
Notifications to EPA and State Agencies
Information Not Reported to EPA
Effective Date of Revised Reporting Requirements
Petitions to the Administrator
Confidentiality of Data
Reporting Addresses
I. Changes to Appendix A, Specifications and Testing Procedures
Changes to Span Requirements
a. Span for SO₂ Pollutant Concentration Monitors
b. Span for NO_XPollutant Concentration Monitors
c. Changes to Span
Clarification of Certification Test Procedures
a. Calibration Error Test
b. Cycle Time Test
c. Relative Accuracy Test for NO<INF>X
d. RATAs for CO<INF>2 and O<INF>2
Calibration Gases
Changes to Appendix B, Quality Assurance and Quality Control
Procedures
Periodic RATAs for Monitors on Peaking Units and Bypass
Stacks
Incentive Standard and Out-of-Control for CO<INF>2 Monitors
Incentive Standard for NO_XLow Emitters
Quality Assurance of Data Following Daily Calibration Error
Test
Recalibration
Calibration Gas for Linearity Checks
J. Changes to Appendix C, Missing Data Statistical Estimation
Procedures
Changes to Parametric Monitoring Procedure for Missing Data
Clarifications of Load-Based Procedure for Missing Flow Rate
and NO_XEmission Rate Data
K. Changes to Appendix D, Optional SO₂ Emission Protocol
for Gas-fired and Oil-fired Units
Gaseous Fuels Other Than Natural Gas
SO₂ Emissions From Natural Gas
Fuel Flowmeter Installation Requirements
Gas Flowmeter Accuracy
Fuel Flowmeter Calibration and Quality Assurance Requirements
Fuel Sampling for Diesel Fuel
Turnaround Time for Fuel Analysis
Missing Data Procedures
Heat Input
L. Changes to Appendix E, Optional NO_XEmission Estimation
Protocol for Gas-fired Peaking Units and Oil-fired Peaking Units
Testing by Fuel
Heat Input as Unit Operating Load
Number of Load Levels
Tests by Excess O<INF>2 Level
Efficiency Testing
Stack Testing Procedures
Quality Assurance and Quality Control Parameters
Emergency Fuel Provisions
M. Changes to Appendix F, Conversion Procedures
Heat Input
Diluent Cap Values
NO_Xand SO₂ Conversion Procedures
N. Changes to Appendix G, Determination of CO<INF>2 Emissions

III. Impact Analyses

A. Paperwork Reduction Act

The information collection requirements in this rule have been
approved by the Office of Management and Budget (OMB) under the
Paperwork Reduction Act, 44 U.S.C. 3501 et seq. and have been assigned
control number 2060-0258.
This collection of information has an estimated reporting burden
averaging 40 hours per response and an estimated annual recordkeeping
burden averaging 160 hours per respondent. These estimates include time
for reviewing instructions, searching existing data sources, gathering
and maintaining the data needed, and completing and reviewing the
collection of information.
The control numbers assigned to collections of information in
certain EPA regulations by the OMB have been consolidated under 40 CFR
part 9. The EPA finds there is ``good cause'' under Sections 553(b)(B)
and 553(d)(3) of the Administrative Procedure Act to amend the
applicable table in 40 CFR part 9 to display the OMB control number for
this rule without prior notice and comment. Due to the technical nature
of the table, further notice and comment would be unnecessary. For
additional information, see 58 FR 18014, April 7, 1993, and 58 FR
27472, May 10, 1993.
Send comments regarding the burden estimate or any other aspect of
this collection of information, including suggestions for reducing this
burden to Chief, Information Policy Branch; EPA; 401 M St., SW (Mail
Code 2136); Washington, DC 20460; and to the Office of Information and
Regulatory Affairs, Office of Management and Budget, Washington, DC
20503, marked ``Attention: Desk Officer for EPA.''

B. Executive Order Requirements

Executive Order 12866
Under Executive Order 12866 (58 FR 51735, October 4, 1993), the
Agency must determine whether the regulatory action is ``significant''
and therefore subject to OMB review and the requirements of the
Executive Order. The Order defines ``significant regulatory action'' as
one that is likely to result in a rule that may:
(1) Have an annual effect on the economy of $100 million or more or
adversely affect in a material way the economy, a sector of the
economy, productivity, competition, jobs, the environment, public
health or safety, or State, local, or tribal governments or
communities;
(2) Create a serious inconsistency or otherwise interfere with an
action taken or planned by another agency;
(3) Materially alter the budgetary impact of entitlements, grants,
user fees, or loan programs or the rights and obligations of recipients
thereof; or
(4) Raise novel legal or policy issues arising out of legal
mandates, the President's priorities, or the principles set forth in
the Executive Order.
Pursuant to the terms of Executive Order 12866, OMB has notified
EPA that it considers this a ``significant regulatory action'' within
the meaning of the Executive Order. The EPA has submitted this action
to OMB for review. Changes made in response to OMB suggestions or
recommendations will be documented in the public record.
The revisions to part 75 slightly decrease the overall cost of
compliance for the regulated community. Therefore, the Agency did not
prepare a Regulatory Impact Analysis (RIA). Revisions to appendix D of
part 75, ``Optional SO₂ Emissions Data Protocol for Gas-Fired and
Oil-Fired Units,'' reduce the frequency of sampling and analysis of
diesel fuel, reducing the cost of SO₂ monitoring for units using
No. 2 fuel oil as a backup fuel. Revisions to appendix E of part 75,
``Optional NO_XEmission Estimation Protocol for Gas-Fired Peaking
Units and Oil-Fired Peaking Units,'' reduce the amount of testing for
gas-fired peaking units and oil-fired peaking units using this optional
procedure. A small gas-fired or oil-fired peaking unit using appendix D
or appendix E would have monitoring costs reduced by 10 to 40 percent
from the cost of the promulgated rule of January 11, 1993.
Executive Order 12875
Executive Order 12875 generally prohibits Agencies from issuing
regulations not required by statute that impose mandates on State,
local, and tribal governments unless federal funding is provided for
the direct costs of compliance or the Agency, after consultation with
the affected entities, justifies the need for an unfunded mandate.
Clean Air Act Section 412(a) required EPA to issue regulations
specifying requirements for CEMS and alternative monitoring systems, as
well as for recordkeeping and reporting of [[Page 26513]] information
from such systems. This direct final rule revises the regulation
required under Section 412(a) in order to address various issues that
have come to light during early implementation and is therefore a
statutorily-required regulation. In addition, as discussed above, the
revisions to the regulation do not impose additional costs, but rather
slightly decrease the overall cost of compliance for the regulated
community. Therefore, the revisions meet the requirements of Executive
Order 12875.

C. Regulatory Flexibility Act

Pursuant to Section 605(b) of the Regulatory Flexibility Act, 5
U.S.C. 605(b), the Administrator certifies on April 28, 1995 that this
rule revision will not have a significant economic impact on a
substantial number of small entities.
The EPA performed an analysis of the effects upon small utilities
of the Acid Rain core rules (58 FR 3649, January 11, 1993), including
permitting, allowances, and continuous emission monitoring. The earlier
document concluded that significant costs would occur to small
utilities as a result of statutory requirements. For example, based
upon a worst case for model utilities, total regulatory costs could
represent as much as 6 to 7 percent of the average value of electricity
produced in the year 2000. About one-third of the 105 small utilities
currently affected could face impacts of up to this magnitude.
Today's revisions to part 75 have a beneficial impact on small
entities by reducing the burden of complying with the Acid Rain Program
monitoring requirements for approximately 800 small utility units.
Revisions to appendix D of part 75 reduce the frequency of sampling and
analysis of diesel fuel, reducing the cost of SO₂ monitoring for
units using diesel fuel (No. 2 fuel oil) as a backup fuel. The EPA
estimates that this will reduce the cost of complying with monitoring
requirements by 15 percent per year for SO₂ monitoring for units
using diesel fuel. Revisions to appendix E of part 75 reduce the amount
of testing for gas-fired peaking units and oil-fired peaking units. The
EPA estimates that these changes will reduce the cost of appendix E
testing by one-third for boilers and by one-tenth for stationary gas
turbines and diesel reciprocating engines. A small gas-fired or oilfired
peaking unit monitoring using appendix D or appendix E would have
monitoring costs reduced by 10 to 40 percent from the cost of the
promulgated rule of January 11, 1993.

D. Unfunded Mandates Act

Section 202 of the Unfunded Mandates Reform Act of 1995 (``Unfunded
Mandates Act'') (signed into law on March 22, 1995) requires that the
Agency prepare a budgetary impact statement before promulgating a rule
that includes a Federal mandate that may result in expenditure by
State, local, and tribal governments, in aggregate, or by the private
sector, of $100 million or more in any one year. Section 203 requires
the Agency to establish a plan for obtaining input from and informing,
educating, and advising any small governments that may be significantly
or uniquely affected by the rule.
Under section 205 of the Unfunded Mandates Act, the Agency must
identify and consider a reasonable number of regulatory alternatives
before promulgating a rule for which a budgetary impact statement must
be prepared. The Agency must select from those alternatives the least
costly, most cost-effective, or least burdensome alternative that
achieves the objectives of the rule, unless the Agency explains why
this alternative is not selected or why the selection of this
alternative is inconsistent with law.
Because this direct final rule and its associated proposed and
interim final rules are estimated to have an impact of less than $100
million in any one year, the Agency has not prepared a budgetary impact
statement or specifically addressed the selection of the least costly,
most cost-effective, or least burdensome alternative. Because small
governments will not be significantly or uniquely affected by the
revisions to parts 72 and 75, the Agency is not required to develop a
plan with regard to small governments. However, as discussed in this
preamble, the rule revisions have the net effect of reducing the burden
of part 75 of the Acid Rain regulations on regulated entities,
including both investor-owned and State and municipally-owned
utilities.

List of Subjects in 40 CFR Parts 9, 72, and 75

Environmental protection, Air pollution control, Carbon dioxide,
Continuous emission monitors, Electric utilities, Incorporation by
reference, Nitrogen oxides, Reporting and recordkeeping requirements,
Sulfur dioxide.

Dated: April 28, 1995.
Carol M. Browner,
Administrator.

For the reasons set out in the preamble, parts 9, 72, and 75 of
title 40, chapter I, of the Code of Federal Regulations are amended as
follows:

PART 9--OMB APPROVALS UNDER THE PAPERWORK REDUCTION ACT

The authority citation for part 9 continues to read as follows:

Authority: 7 U.S.C. 135 et seq., 136-136y; 15 U.S.C. 2001, 2003,
2005, 2006, 2601-2671; 21 U.S.C. 331j, 346a, 348; 31 U.S.C. 9701; 33
U.S.C. 1251 et seq., 1311, 1313d, 1314, 1321, 1326, 1330, 1344, 1345
(d) and (e), 1361; E.O. 11735, 58 FR 21243, 3 CFR, 1971-1975 Comp.
p. 973; 42 U.S.C. 241, 242b, 243, 246, 300f, 300g, 300g-1, 300g-2,
300g-3, 300g-4, 300g-5, 300g-6, 300j-1, 300j-2, 300j-3, 300j-4,
300j-9, 1857 et seq., 6901-6992k, 7401-7767q, 7542, 9601-9657,
11023, 11048.

2. The table in Sec. 9.1 under the heading ``Continuous Emission
Monitoring'' by removing the entries for ``Secs. 75.50 through 75.53''
and by adding entries for ``Secs. 75.50 through 75.52'' and
``Secs. 75.53 through 75.56'' to read as follows:

Sec. 9.1 OMB approvals under the Paperwork Reduction Act.

* * * *

OMB Control
40 CFR Citation No.
[Amended]
3........ Approved alternative monitoring system.
4........ Reference method:
SO₂Method 6C.
Flow: Method 2.
NO<INF>X: Method 7E.
CO<INF>2 or O<INF>2: Method 3A.
procedures.
emission rate.
emission rate.
rate.
corresponding load range.
maximum CO<INF>2 concentration.
13........ Other data (specify method).
mmBtu or for CO<INF>2 concentration.
emissions.
Tangentially-fired dry 460
bottom and fluidized bed.
Wall-fired dry bottom, 675
turbo-fired dry bottom,
stokers.
Roof-fired (vertically- 975
fired) dry bottom, cell
burners, arch-fired.
Cyclone, wall-fired wet 1200
bottom, wet bottom turbo-
fired.
Units
Tangentially-fired dry 380
bottom.
Wall-fired dry bottom.... 600
Roof-fired (vertically- 550
fired) dry bottom, arch-
fired.
Existing combustion 200
turbine or combined
cycle turbine.
New stationary gas 50
turbine/combustion
turbine.
Figure 2.--Relative Accuracy Test Frequency Incentive System
Semiannually\1\
RATA (percent) Annual\1\
ppm.\2\
lb/mmBtu.\2\
fps.\2\
fps.\2\
For monitors on peaking units, unit operating quarters, not to exceed two calendar years.
Substitution Data Procedures
Percent of
Operating load range maximum hourly
gross load ()

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Acid Rain Program: Permits Regulation General Provisions and Continuous Emission Monitoring Rule Technical Revisions

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