review of this action must be filed in the United States Court of
Appeals for the appropriate circuit by May 27, 2011. Filing a petition
for reconsideration by the Administrator of this final rule does not
affect the finality of this rule for the purposes of judicial review,
nor does it extend the time within which a petition for judicial review
may be filed, and shall not postpone the effectiveness of such a rule
or action. This action may not be challenged later in proceedings to
enforce its requirements. (See section 307(b)(2) of the Administrative
Procedures Act.)

List of Subjects

40 CFR Part 72

    Environmental protection, Acid rain, Administrative practice and
procedure, Air pollution control, Electric utilities, Carbon dioxide,
Continuous emission monitoring, Intergovernmental relations, Nitrogen
oxides, Reporting and recordkeeping requirements, Sulfur oxides,
Reference test methods, Incorporation by reference.

40 CFR Part 75

    Environmental protection, Acid rain, Administrative practice and
procedure, Air pollution control, Electric utilities, Carbon dioxide,
Continuous emission monitoring, Intergovernmental relations, Nitrogen
oxides, Reporting and recordkeeping requirements, Sulfur oxides,
Reference test methods, Incorporation by reference.

    Dated: March 10, 2011.
Lisa P. Jackson,
Administrator.

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

PART 72--PERMITS REGULATION

0
1. The authority citation for part 72 continues to read as follows:

    Authority:  42 U.S.C. 7601 and 7651, et seq.

0
2. Section 72.2 is amended by:
0
a. Revising the definitions of ``Air Emission Testing Body (AETB)'',
``EPA Protocol Gas'', ``EPA Protocol Gas Verification Program'', and
``Qualified individual'';
0
b. Revising the introductory text of the definition of ``Continuous
emission monitoring system or CEMS'';
0
c. Removing paragraph (7) of the definition of ``Continuous emission
monitoring system or CEMS'';
0
d. Removing the definitions of ``NIST traceable elemental Hg
standards'', ``NIST traceable source of oxidized Hg'', ``Sorbent trap
monitoring system'', and ``Specialty Gas Producer''; and
0
e. Adding in alphabetical order definitions for ``Coverage Factor k'',
``EPA Protocol Gas Production Site'', ``Expanded uncertainty'', and
``Specialty Gas Company'', to read as follows:

Sec.  72.2  Definitions.

* * * * *
    Air Emission Testing Body (AETB) means a company or other entity
that provides to the owner or operator the certification required by
section 6.1.2(b) of appendix A to part 75 of this chapter.
* * * * *
    Continuous emission monitoring system or CEMS means the equipment
required by part 75 of this chapter used to sample, analyze, measure,
and provide, by means of readings recorded at least once every 15
minutes (using an automated data acquisition and handling system
(DAHS)), a permanent record of SO2, NOX, or
CO2 emissions or stack gas volumetric flow rate. The
following are the principal types of continuous emission monitoring
systems required under part 75 of this chapter. Sections 75.10 through
75.18, and Sec.  75.71(a) of this chapter indicate which type(s) of
CEMS is required for specific applications:
* * * * *
    Coverage Factor k means, in general, a value chosen on the basis of
the desired level of confidence to be associated with the interval
defined by U = kuc. Typically, k is in the range 2 to 3.
When the normal distribution applies and uc is a reliable
estimate of the standard deviation of y, U = 2 uc (i.e., k =
2) defines an interval having a level of confidence of approximately
95%, and U = 3 uc (i.e., k = 3) defines

an interval having a level of confidence greater than 99%.
* * * * *
    EPA Protocol Gas means a calibration gas mixture prepared and
analyzed according to section 2 of the ``EPA Traceability Protocol for
Assay and Certification of Gaseous Calibration Standards,'' September
1997, as amended August 25, 1999, EPA-600/R-97/121 (incorporated by
reference, see Sec.  72.13) or such revised procedure as approved by
the Administrator.
    EPA Protocol Gas Production Site means a site that produces or
blends calibration gas mixtures prepared and analyzed according to
section 2 of the ``EPA Traceability Protocol for Assay and
Certification of Gaseous Calibration Standards,'' September 1997, as
amended August 25, 1999, EPA-600/R-97/121 (incorporated by reference,
see Sec.  72.13) or such revised procedure as approved by the
Administrator.
    EPA Protocol Gas Verification Program or PGVP means a calibration
gas audit program described in Sec.  75.21(g) of this chapter and
implemented by EPA in cooperation with the National Institute of
Standards and Technology (NIST).
* * * * *
    Expanded uncertainty means a measure of uncertainty that defines an
interval about the measurement result y within which the value of the
measurand Y can be confidently asserted to lie. Although the combined
standard uncertainty uc is used to express the uncertainty
of many measurement results, for some commercial, industrial, and
regulatory applications (e.g., when health and safety are concerned),
what is often required is an expanded uncertainty, suggested symbol U,
and is obtained by multiplying uc(y) by a coverage factor,
suggested symbol k. Thus U = kuc(y) and it is confidently
believed that Y is greater than or equal to y - U, and is less than or
equal to y + U, which is commonly written as Y = y  U.
* * * * *
    Qualified individual (QI) means an individual who is identified by
an AETB as meeting the requirements described in ASTM D 7036-04
``Standard Practice for Competence of Air Emission Testing Bodies''
(incorporated by reference, see Sec.  72.13), as of the date of
testing.
* * * * *
    Specialty Gas Company means an organization that wholly or
partially owns or operates one or more EPA Protocol gas production
sites.
* * * * *

0
3. Section 72.13 is amended by:
0
a. Revising paragraph (a) introductory text;
0
b. Adding paragraph (a)(5); and
0
c. Adding paragraph (b), to read as follows:

Sec.  72.13  Incorporation by reference.

* * * * *
    (a) The following materials are available for purchase from the
following address: American Society for Testing and Material (ASTM)
International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken,
Pennsylvania 19428-2959, phone:<PHONE_NUMBER>, http://www.astm.org/DIGITAL_LIBRARY/index.shtml.
* * * * *
    (5) ASTM D 7036-04, Standard Practice for Competence of Air
Emission Testing Bodies, for Sec.  72.2.
    (b) A copy of the following material is available from http://www.epa.gov/ttn/emc/news.html (see postings for Sections 1, 2, 3, 4,
Appendices, Spreadsheets, and the ``Read before downloading Section 2''
revision posted August 27, 1999): EPA-600/R-97/121, EPA Traceability
Protocol for Assay and Certification of Gaseous Calibration Standards,
September 1997, as amended August 25, 1999, U.S. Environmental
Protection Agency, for Sec.  72.2.

PART 75--CONTINUOUS EMISSION MONITORING

0
4. The authority citation for part 75 continues to read as follows:

    Authority:  42 U.S.C. 7601, 7651k, and 7651k note.

Sec.  75.2  [Amended]

0
5. Section 75.2 is amended by removing paragraph (d).
0
6. Section 75.4 is amended by:
0
a. Revising paragraphs (b)(2) and (c)(2);
0
b. Revising paragraph (d) introductory text; and
0
c. Revising paragraphs (d)(1) and (e), to read as follows:

Sec.  75.4  Compliance dates.

* * * * *
    (b) * * *
    (2) 180 calendar days after the date the unit commences commercial
operation, notice of which date shall be provided under subpart G of
this part.
    (c) * * *
    (2) 180 calendar days after the date on which the unit becomes
subject to the requirements of the Acid Rain Program, notice of which
date shall be provided under subpart G of this part.
    (d) This paragraph (d) applies to affected units under the Acid
Rain Program and to units subject to a State or Federal pollutant mass
emissions reduction program that adopts the emission monitoring and
reporting provisions of this part. In accordance with Sec.  75.20, for
an affected unit which, on the applicable compliance date, is either in
long-term cold storage (as defined in Sec.  72.2 of this chapter) or is
shut down as the result of a planned outage or a forced outage, thereby
preventing the required continuous monitoring system certification
tests from being completed by the compliance date, the owner or
operator shall provide notice of such unit storage or outage in
accordance with Sec.  75.61(a)(3) or Sec.  75.61(a)(7), as applicable.
For the planned and unplanned unit outages described in this paragraph
(d), the owner or operator shall ensure that all of the continuous
monitoring systems for SO2, NOX, CO2,
opacity, and volumetric flow rate required under this part (or under
the applicable State or Federal mass emissions reduction program) are
installed and that all required certification tests are completed no
later than 90 unit operating days or 180 calendar days (whichever
occurs first) after the date that the unit recommences commercial
operation, notice of which date shall be provided under Sec.
75.61(a)(3) or Sec.  75.61(a)(7), as applicable. The owner or operator
shall determine and report SO2 concentration, NOX
emission rate, CO2 concentration, and flow rate data (as
applicable) for all unit operating hours after the applicable
compliance date until all of the required certification tests are
successfully completed, using either:
    (1) The maximum potential concentration of SO2 (as
defined in section <IP_ADDRESS> of appendix A to this part), the maximum
potential NOX emission rate, as defined in Sec.  72.2 of
this chapter, the maximum potential flow rate, as defined in section
<IP_ADDRESS> of appendix A to this part, or the maximum potential
CO2 concentration, as defined in section <IP_ADDRESS> of appendix
A to this part; or
* * * * *
    (e) In accordance with Sec.  75.20, if the owner or operator of an
affected unit completes construction of a new stack or flue, or a flue
gas desulfurization system or add-on NOX emission controls,
after the applicable deadline in paragraph (a), (b), or (c) of this
section:
    (1) Except as otherwise provided in paragraph (e)(3) of this
section, the owner or operator shall ensure that all required
certification and/or recertification and/or diagnostic tests of the
monitoring systems required under this part (i.e., the SO2,
NOX, CO2,

opacity, and volumetric flow rate monitoring systems, as applicable)
are completed not later than 90 unit operating days or 180 calendar
days (whichever occurs first) after:
    (i) For the event of construction of a new stack or flue, the date
that emissions first exit to the atmosphere through the new stack or
flue, notice of which date shall be provided under subpart G of this
part; or
    (ii) For the event of installation of a flue gas desulfurization
system or add-on NOX emission controls, the date that
reagent is first injected into the flue gas desulfurization system or
the add-on NOX emission controls, as applicable, notice of
which date shall be provided under subpart G of this part.
    (2) The owner or operator shall determine and report SO2
concentration, NOX emission rate, CO2
concentration, and volumetric flow rate data for all unit or stack
operating hours after emissions first pass through the new stack or
flue, or reagent is first injected into the flue gas desulfurization
system or add-on NOX emission controls, as applicable, until
all required certification and/or recertification and/or diagnostic
tests are successfully completed, using:
    (i) The applicable missing data substitution procedures under
Sec. Sec.  75.31 through 75.37;
    (ii) The conditional data validation procedures of Sec.
75.20(b)(3), except that conditional data validation may, if necessary,
be used for the entire window of time provided under paragraph (e)(1)
of this section in lieu of the periods specified in Sec.
75.20(b)(3)(iv);
    (iii) Reference methods under Sec.  75.22(b);
    (iv) Quality-assured data recorded on the high measurement scale of
the monitor that measures the pollutant being removed by the add-on
emission controls (i.e., SO2 or NOX, as
applicable), if, pursuant to section 2 of appendix A to this part, two
spans and ranges are required for that monitor and if the high
measurement scale of the monitor has been certified according to Sec.
75.20(c), section 6 of appendix A to this part, and, if applicable,
paragraph (e)(4)(i) of this section. Data recorded on the certified
high scale, including data that ordinarily would be required to be
recorded on the low scale, pursuant to section <IP_ADDRESS>(g) or <IP_ADDRESS>(f)
of appendix A to this part, may be reported as quality-assured for a
period not to exceed 60 unit or stack operating days after the date and
hour that reagent is first injected into the control device. In order
for the high and low scale readings from the monitor to be reported as
quality-assured for more than 60 unit or stack operating days after the
date and hour that reagent is first injected into the control device,
all required tests of the low measurement scale must be performed and
passed within the window of time provided under paragraph (e)(1)(ii) of
this section; or
    (v) Another procedure approved by the Administrator pursuant to a
petition under Sec.  75.66.
    (3) If a particular project involves both the event of new stack or
flue construction and the event of installation of a flue gas
desulfurization system or add-on NOX emission controls, the
owner or operator shall either:
    (i) Complete all of the monitoring system certification and/or
recertification and/or diagnostic testing requirements of both events
within the window of time provided under paragraph (e)(1)(i) of this
section; or
    (ii) Complete all of the monitoring system certification and/or
recertification and/or diagnostic testing requirements of each event
within the separate window of time applicable to such event provided
under paragraph (e)(1) of this section.
    (4) For the project described in paragraph (e)(3) of this section,
the emissions data from each CEMS installed on the new stack recorded
in the interval of time starting on the date and hour on which
emissions first exit to the atmosphere through the new stack and ending
on the hour before the date and hour on which reagent is first injected
into the control device may be reported as quality assured:
    (i) For the CEMS that includes the monitor that measures the
pollutant being removed by the add-on emission controls (i.e.,
SO2 or NOX, as applicable):
    (A) Only if the relative accuracy test audit (RATA) of the high
measurement scale of the monitor is successfully completed either prior
to the date and hour of the first injection of reagent into the
emission control device, or after that date and hour during a period
when the control device is not operating, but still within the window
of time provided under paragraph (e)(1)(i) of this section, and the
rest of the certification tests required under Sec.  75.20(c) and
section 6 of appendix A to this part for the high measurement scale of
the monitor are successfully completed within the window of time
provided under paragraph (e)(1)(i) of this section;
    (B) Beginning with:
    (1) The first unit or stack operating hour after successful
completion of all of the certification tests in accordance with
paragraph (e)(4)(i)(A) of this section; or
    (2) The hour of the probationary calibration error test (see Sec.
75.20(b)(3)(ii)), if conditional data validation is used and all of the
certification tests are successfully completed in accordance with
paragraph (e)(4)(i)(A) of this section, with no test failures. If any
required test is failed or aborted or is otherwise not in accordance
with paragraph (e)(4)(i)(A) of this section, data validation shall be
done according to Sec.  75.20(b)(3)(vii).
    (ii) For a CEMS other than one addressed in paragraph (e)(4)(i) of
this section:
    (A) Only if the relative accuracy test audit (RATA) of the CEMS is
successfully completed either prior to the date and hour of the first
injection of reagent into the emission control device, or after that
date and hour during a period when the control device is not operating,
but still within the window of time provided under paragraph (e)(1)(i)
of this section, and the rest of the certification tests required under
Sec.  75.20(c) and section 6 of appendix A to this part for the CEMS
are successfully completed within the window of time provided under
paragraph (e)(1)(i) of this section;
    (B) Beginning with:
    (1) The first unit or stack operating hour after successful
completion of all of the certification tests in accordance with
paragraph (e)(4)(ii)(A) of this section; or
    (2) The hour of the probationary calibration error test (see Sec.
75.20(b)(3)(ii)), if conditional data validation is used and all of the
certification tests are successfully completed in accordance with
paragraph (e)(4)(ii)(A) of this section, with no test failures. If any
required test is failed or aborted or is otherwise not in accordance
with paragraph (e)(4)(ii)(A) of this section, data validation shall be
done according to Sec.  75.20(b)(3)(vii).
* * * * *

0
7. Section 75.6 is amended by:
0
a. Revising paragraph (a) introductory text;
0
b. Removing and reserving paragraphs (a)(38), (a)(43), and (a)(44);
0
c. Revising paragraphs (a)(48) and (f)(3); and
0
d. Adding paragraph (g), to read as follows:

Sec.  75.6  Incorporation by reference.

* * * * *
    (a) The following materials are available for purchase from the
following address: American Society for Testing and Material (ASTM)

International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken,
Pennsylvania, 19428-2959, phone:<PHONE_NUMBER>, http://www.astm.org/DIGITAL_LIBRARY/index.shtml.
* * * * *
    (38) [Reserved]
* * * * *
    (43) [Reserved]
    (44) [Reserved]
* * * * *
    (48) ASTM D7036-04, Standard Practice for Competence of Air
Emission Testing Bodies, for Sec.  75.21, Sec.  75.59, and appendix A
to this part.
* * * * *
    (f) * * *
    (3) American Petroleum Institute (API) Manual of Petroleum
Measurement Standards, Chapter 4--Proving Systems, Section 2--Pipe
Provers (Provers Accumulating at Least 10,000 Pulses), Second Edition,
March 2001, Section 3--Small Volume Provers, First Edition, July 1988,
Reaffirmed Oct 1993, and Section 5--Master-Meter Provers, Second
Edition, May 2000, for appendix D to this part.
* * * * *
    (g) A copy of the following material is available from http://www.epa.gov/ttn/emc/news.html (see postings for Sections 1, 2, 3, 4,
Appendices, Spreadsheets, and the ``Read before downloading Section 2''
revision posted August 27, 1999): EPA-600/R-97/121, EPA Traceability
Protocol for Assay and Certification of Gaseous Calibration Standards,
September 1997, as amended August 25, 1999, U.S. Environmental
Protection Agency, for Sec.  75.21, and appendix A to this part.

0
8. Section 75.10 is amended by:
0
a. Revising the second sentence of paragraph (d)(1); and
0
b. Revising the first sentence of paragraph (d)(3), to read as follows:

Sec.  75.10  General operating requirements.

* * * * *
    (d) * * *
    (1) * * * The owner or operator shall reduce all SO2
concentrations, volumetric flow, SO2 mass emissions,
CO2 concentration, O2 concentration,
CO2 mass emissions (if applicable), NOX
concentration, and NOX emission rate data collected by the
monitors to hourly averages. * * *
* * * * *
    (3) Failure of an SO2, CO2, or O2
emissions concentration monitor, NOX concentration monitor,
flow monitor, moisture monitor, or NOX-diluent continuous
emission monitoring system to acquire the minimum number of data points
for calculation of an hourly average in paragraph (d)(1) of this
section shall result in the failure to obtain a valid hour of data and
the loss of such component data for the entire hour. * * *
* * * * *

Sec.  75.15  [Removed and reserved]

0
9. Section 75.15 is removed and reserved.

0
10. Section 75.20 is amended by:
0
a. Revising paragraph (a)(5)(i);
0
b. Revising the first sentence of paragraph (b) introductory text;
0
c. Revising paragraph (c)(1) introductory text;
0
d. Revising paragraphs (c)(1)(ii) and (c)(1)(iii);
0
e. Removing paragraph (c)(1)(vi);
0
f. Removing and reserving paragraph (c)(9); and
0
g. Removing paragraph (d)(2)(ix), to read as follows:

Sec.  75.20  Initial certification and recertification procedures.

    (a) * * *
    (5) * * *
    (i) Until such time, date, and hour as the continuous emission
monitoring system can be adjusted, repaired, or replaced and
certification tests successfully completed (or, if the conditional data
validation procedures in paragraphs (b)(3)(ii) through (b)(3)(ix) of
this section are used, until a probationary calibration error test is
passed following corrective actions in accordance with paragraph
(b)(3)(ii) of this section), the owner or operator shall substitute the
following values, as applicable, for each hour of unit operation during
the period of invalid data specified in paragraph (a)(4)(iii) of this
section or in Sec.  75.21: the maximum potential concentration of
SO2, as defined in section <IP_ADDRESS> of appendix A to this
part, to report SO2 concentration; the maximum potential
NOX emission rate, as defined in Sec.  72.2 of this chapter,
to report NOX emissions in lb/mmBtu; the maximum potential
concentration of NOX, as defined in section <IP_ADDRESS> of
appendix A to this part, to report NOX emissions in ppm
(when a NOX concentration monitoring system is used to
determine NOX mass emissions, as defined under Sec.
75.71(a)(2)); the maximum potential flow rate, as defined in section
<IP_ADDRESS> of appendix A to this part, to report volumetric flow; the
maximum potential concentration of CO2, as defined in
section <IP_ADDRESS> of appendix A to this part, to report CO2
concentration data; and either the minimum potential moisture
percentage, as defined in section 2.1.5 of appendix A to this part or,
if Equation 19-3, 19-4 or 19-8 in Method 19 in appendix A to part 60 of
this chapter is used to determine NOX emission rate, the
maximum potential moisture percentage, as defined in section 2.1.6 of
appendix A to this part; and
* * * * *
    (b) Recertification approval process. Whenever the owner or
operator makes a replacement, modification, or change in a certified
continuous emission monitoring system or continuous opacity monitoring
system that may significantly affect the ability of the system to
accurately measure or record the SO2 or CO2
concentration, stack gas volumetric flow rate, NOX emission
rate, NOX concentration, percent moisture, or opacity, or to
meet the requirements of Sec.  75.21 or appendix B to this part, the
owner or operator shall recertify the continuous emission monitoring
system or continuous opacity monitoring system, according to the
procedures in this paragraph. * * *
* * * * *
    (c) * * *
    (1) For each SO2 pollutant concentration monitor, each
NOX concentration monitoring system used to determine
NOX mass emissions, as defined under Sec.  75.71(a)(2), and
each NOX-diluent continuous emission monitoring system:
* * * * *
    (ii) A linearity check, where, for the NOX-diluent
continuous emission monitoring system, the test is performed separately
on the NOX pollutant concentration monitor and the diluent
gas monitor;
    (iii) A relative accuracy test audit. For the NOX-
diluent continuous emission monitoring system, the RATA shall be done
on a system basis, in units of lb/mmBtu. For the NOX
concentration monitoring system, the RATA shall be done on a ppm basis;
* * * * *
    (9) [Reserved]
* * * * *

0
11. Section 75.21 is amended by:
0
a. Revising paragraph (a)(3); and
0
b. Adding paragraphs (f) and (g), to read as follows:

Sec.  75.21  Quality assurance and quality control requirements.

    (a) * * *
    (3) The owner or operator shall perform quality assurance upon a
reference method backup monitoring system according to the requirements
of Method 2, 6C, 7E, or 3A in Appendices A-1, A-2 and A-4 to part 60 of
this chapter (supplemented, as necessary, by guidance from the
Administrator),

instead of the procedures specified in appendix B to this part.
* * * * *
    (f) Requirements for Air Emission Testing. On and after March 27,
2012, relative accuracy testing under Sec.  75.74(c)(2)(ii), section
6.5 of appendix A to this part, and section 2.3.1 of appendix B to this
part, and stack testing under Sec.  75.19 and section 2.1 of appendix E
to this part shall be performed by an ``Air Emission Testing Body'', as
defined in Sec.  72.2 of this chapter. Conformance to the requirements
of ASTM D7036-04 (incorporated by reference, see Sec.  75.6), referred
to in section 6.1.2 of appendix A to this part, shall apply only to
these tests. Section 1.1.4 of appendix B to this part, and section 2.1
of appendix E to this part require compliance with section 6.1.2 of
appendix A to this part. Tests and activities under this part not
required to be performed by an AETB as defined in Sec.  72.2 of this
chapter include daily CEMS operation, daily calibration error checks,
daily flow interference checks, quarterly linearity checks, routine
maintenance of CEMS, voluntary emissions testing, or emissions testing
required under other regulations.
    (g) Requirements for EPA Protocol Gas Verification Program. Any EPA
Protocol gas production site that chooses to participate in the EPA
Protocol Gas Verification Program (PGVP) must notify the Administrator
of its intent to participate. An EPA Protocol gas production site's
participation shall commence immediately upon notification to EPA and
shall extend through the end of the calendar year in which notification
is provided. EPA will issue a vendor ID to each participating EPA
Protocol gas production site. In each year of the PGVP, EPA may audit
up to four EPA Protocol gas cylinders from each participating EPA
Protocol gas production site.
    (1) A production site participating in the PGVP shall provide the
following information in its initial and ongoing notifications to EPA
in an electronic format prescribed by the Administrator (see the CAMD
Web site http://www.epa.gov/airmarkets/emissions/pgvp.html):
    (i) The specialty gas company name which owns or operates the
participating production site;
    (ii) The name, e-mail address, and telephone number of a contact
person for that specialty gas company;
    (iii) The name and address of that participating EPA Protocol gas
production site, owned or operated by the specialty gas company; and
    (iv) The name, e-mail address, and telephone number of a contact
person for that participating EPA Protocol gas production site.
    (2) An EPA Protocol gas production site that elects to continue
participating in the PGVP in the next calendar year must notify the
Administrator of its intent to continue in the program by December 31
of the current year by submitting to EPA the information described in
paragraph (g)(1) of this section.
    (3) A list of the names, contact information, and vendor IDs of EPA
Protocol gas production sites participating in the PGVP will be made
publicly available by posting on EPA Web sites (see the CAMD Web site
http://www.epa.gov/airmarkets/emissions/pgvp.html).
    (4) EPA may remove an EPA Protocol gas production site from the
list of PGVP participants and give notice to the production site for
any of the following reasons:
    (i) If the EPA Protocol gas production site fails to provide all of
the information required by paragraph (g)(1) of this section in
accordance with paragraph (g)(2) of this section;
    (ii) If, after being notified that its EPA Protocol gas cylinders
are being audited by EPA, the EPA Protocol gas production site fails to
cancel its invoice or to credit the purchaser's account for the
cylinders within 45 calendar days of such notification; or
    (iii) If, after being notified that its EPA Protocol gas cylinders
are being audited by EPA, the EPA Protocol gas production site cannot
provide to EPA upon demand proof of payment to the National Institute
of Standards and Technology (NIST) and a valid contract with NIST;
    (5) EPA may relist an EPA Protocol gas production site as follows:
    (i) An EPA Protocol gas production site may be relisted immediately
after its failure is remedied if the only reason for removal from the
list of PGVP participants is failure to provide all of the information
required by paragraph (g)(1) of this section;
    (ii) If EPA does not receive hardcopy or electronic proof of a
credit receipt or of cancellation of the invoice for the cylinders from
the EPA Protocol gas production site within 45 calendar days of
notifying the EPA Protocol gas production site that its cylinders are
being audited by EPA, the cylinders shall be returned to the EPA
Protocol gas production site free of any demurrage, and that EPA
Protocol gas production site shall not be eligible for relisting for
180 calendar days from the date of notice that it was removed from the
list and until it submits to EPA the information required by paragraph
(g)(1) of this section;
    (iii) For any EPA Protocol gas production site which is notified by
EPA that its cylinders are being audited and cannot provide to EPA upon
demand proof of payment to NIST and a valid contract with NIST, the
cylinders may either be kept by NIST or returned to the EPA Protocol
gas production site free of any demurrage and at no cost to NIST, and
that EPA Protocol gas production site shall not be eligible for
relisting for 180 calendar days from the date of notice that it was
removed from the list and until it submits to EPA the information
required by paragraph (g)(1) of this section.
    (6) On and after May 27, 2011 for each unit subject to this part
that uses EPA Protocol gases, the owner or operator must obtain such
gases from either an EPA Protocol gas production site that is on the
EPA list of sites participating in the PGVP on the date the owner or
operator procures such gases or from a reseller that sells to the owner
or operator unaltered EPA Protocol gases produced by an EPA Protocol
gas production site that was on the EPA list of participating sites on
the date the reseller procured such gases.
    (7) An EPA Protocol gas cylinder certified by or ordered from any
non-participating EPA Protocol gas production site no later than May
27, 2011 may be used for the purposes of this part until the earlier of
the cylinder's expiration date or the date on which the cylinder gas
pressure reaches 150 psig. In the event that an EPA Protocol gas
production site is removed from the list of PGVP participants on the
same date as or after the date on which a particular cylinder has been
certified or ordered, that gas cylinder may continue to be used for the
purposes of this part until the earlier of the cylinder's expiration
date or the date on which the cylinder gas pressure reaches 150 psig.
However, in no case shall a cylinder described in this paragraph (g)(7)
be recertified by a non-participating EPA Protocol gas production site
to extend its useful life and be used by a source subject to this part.
    (8) If EPA notifies a participating EPA Protocol gas production
site that its EPA Protocol gas cylinders are being audited and
identifies the purchaser as an EPA representative or contractor
participating in the audit process, the production site shall:
    (i) Either cancel that purchaser's invoice or credit that
purchaser's account for the purchase of those EPA Protocol gas
cylinders;

    (ii) Not charge for demurrage for those EPA Protocol gas cylinders;
    (iii) Arrange for and pay for the return shipment of its cylinders
from NIST; and
    (iv) Provide sufficient funding to NIST for:
    (A) The analysis of those EPA Protocol gas cylinders by NIST;
    (B) The production site's pro rata share of draft and final NIST
electronic audit reports as specified in paragraphs (g)(9)(ii) through
(g)(9)(v) of this section on all cylinders in the current audit; and
    (C) The full cost of a draft redacted electronic audit report
containing just that production site's results and the information as
specified in paragraphs (g)(9)(ii) through (g)(9)(v) of this section;
    (9) If EPA notifies a participating EPA Protocol gas production
site that its EPA Protocol gas cylinders are being audited then:
    (i) Each participating EPA Protocol gas production site must have
NIST analyze its EPA Protocol gas cylinders provided for audit as soon
after NIST receives the batch containing those cylinders as possible,
preferably within two weeks of NIST's receipt, using analytical
procedures consistent with metrology institute practices and at least
as rigorous as the ``EPA Traceability Protocol for Assay and
Certification of Gaseous Calibration Standards'' (Traceability
Protocol), September 1997, as amended August 25, 1999, EPA-600/R-97/
121, (incorporated by reference, see Sec.  75.6) or equivalent written
cylinder analysis protocol that has been approved by EPA.
    (ii) Each cylinder's concentration must be determined by NIST and
the results compared to each cylinder's certification documentation and
tag value to establish conformance with section 5.1 of appendix A to
this part. After NIST analysis, each cylinder must be provided with a
NIST analyzed concentration with an expanded uncertainty, as defined in
Sec.  72.2, (coverage factor, as defined in Sec.  72.2, k=2) of plus or
minus 1.0 percent (calculated combined standard uncertainty of plus or
minus 0.5%), inclusive, or better, unless otherwise approved by EPA.
    (iii) The certification documentation accompanying each cylinder
must be verified in the audit report as meeting the requirements of
``EPA Traceability Protocol for Assay and Certification of Gaseous
Calibration Standards,'' September 1997, as amended August 25, 1999,
EPA-600/R-97/121 (incorporated by reference, see Sec.  75.6) or a
revised procedure approved by the Administrator.
    (iv) Each participating EPA Protocol gas production site shall have
NIST provide all of the information required by paragraphs (g)(9)(ii)
through (g)(9)(v) of this section in draft and final electronic audit
reports on all cylinders in the current audit, and in a draft redacted
electronic audit report containing just that production site's
information. The draft audit report on all cylinders in the current
audit and each draft redacted version of the audit report shall be
submitted electronically by NIST to<EMAIL_ADDRESS>unless otherwise
provided by the Administrator, within four weeks of completion of all
cylinder analyses or as soon as possible thereafter. The draft and
final audit report on all cylinders in the current audit shall only be
sent to EPA. EPA will send the applicable draft redacted audit report
to each participating production site for comment. To be considered in
the final posted audit report, EPA must receive comments, and any
cylinder re-analyses from participating EPA Protocol gas production
sites within 60 days of the participating EPA Protocol gas production
site's receipt of the draft redacted audit report. All comments from
production sites, including any cylinder re-analyses, on the draft
redacted versions of the audit report shall be submitted electronically
to<EMAIL_ADDRESS>unless otherwise provided by the Administrator. The
final audit report on all cylinders in the current audit shall be
submitted electronically by NIST to<EMAIL_ADDRESS>unless otherwise
provided by the Administrator, within 90 days of the participating EPA
Protocol gas production site's receipt of the draft redacted audit
report sent by EPA or as soon as possible thereafter. EPA will post the
final results of the NIST analyses on EPA Web sites (see the CAMD Web
site http://www.epa.gov/airmarkets/emissions/pgvp.html). Each audit
report shall include:
    (A) A table with the information and in the format specified by
Figure 3 (or the Note below Figure 3, as applicable) of appendix B to
this part or such revised format as approved by the Administrator; and
    (B) Complete documentation of the NIST procedures used to analyze
the cylinders, including the analytical reference standards, analytical
method, analytical method uncertainty, analytical instrumentation, and
instrument calibration procedures.
    (v) For EPA Protocol gas production sites that produce EPA Protocol
gas cylinders claiming NIST traceability for both NO and NOX
concentrations in the same cylinder, if analyzed by NIST for the PGVP,
such cylinders must be analyzed by NIST for both the NO and
NOX components (where total NOX is determined by
NO plus NO2) and the results of the analyses shall be
included in the audit report.
    (10) An EPA Protocol gas production site shall continue to be on
the EPA list of sites participating in the PGVP and may continue to
sell EPA Protocol gases to sources subject to part 75 if it is not
notified by EPA that its cylinders are being audited under the PGVP if
it provides the information described in paragraph (g)(1) of this
section in accordance with paragraph (g)(2) of this section.
    (11) The data validation procedures under Sec. Sec.  2.1.4, 2.2.3,
and 2.3.2 of appendix B to this part apply.

0
12. Section 75.22 is amended by:
0
a. Revising paragraph (a) introductory text;
0
b. Revising paragraph (a)(5)(iv);
0
c. Adding paragraph (a)(5)(v)
0
d. Removing paragraph (a)(7);
0
e. Revising paragraph (b) introductory text; and
0
f. Removing paragraphs (b)(5) through (b)(8), to read as follows:

Sec.  75.22  Reference test methods.

    (a) The owner or operator shall use the following methods, which
are found in appendices A-1 through A-4 to part 60 of this chapter, to
conduct the following tests: Monitoring system tests for certification
or recertification of continuous emission monitoring Systems;
NOX emission tests of low mass emission units under Sec.
75.19(c)(1)(iv); NOX emission tests of excepted monitoring
systems under appendix E to this part; and required quality assurance
and quality control tests:
* * * * *
    (5) * * *
    (iv) Section 8.6 of the method allowing for the use of ``Dynamic
Spiking'' as an alternative to the interference and system bias checks
of the method. Dynamic spiking may be conducted (optionally) as an
additional quality assurance check; and
    (v) That portion of Section 8.5 of the method allowing multiple
sampling runs to be conducted before performing the post-run system
bias check or system calibration error check.
* * * * *
    (b) The owner or operator may use any of the following methods,
which are found in appendices A-1 through A-4 to part 60 of this
chapter, as a reference method backup monitoring system to provide
quality-assured monitor data:
* * * * *

0
13. Section 75.24 is amended by revising paragraph (d) to read as
follows:

Sec.  75.24  Out-of-control periods and adjustment for system bias.

* * * * *
    (d) When the bias test indicates that an SO2 monitor, a
flow monitor, a NOX-diluent continuous emission monitoring
system, or a NOX concentration monitoring system used to
determine NOX mass emissions, as defined in Sec.
75.71(a)(2), is biased low (i.e., the arithmetic mean of the
differences between the reference method value and the monitor or
monitoring system measurements in a relative accuracy test audit exceed
the bias statistic in section 7 of appendix A to this part), the owner
or operator shall adjust the monitor or continuous emission monitoring
system to eliminate the cause of bias such that it passes the bias test
or calculate and use the bias adjustment factor as specified in section
2.3.4 of appendix B to this part.
* * * * *

0
14. Section 75.31 is amended by revising paragraphs (a) and (b) to read
as follows:

Sec.  75.31  Initial missing data procedures.

    (a) During the first 720 quality-assured monitor operating hours
following initial certification of the required SO2,
CO2, O2, or moisture monitoring system(s) at a
particular unit or stack location (i.e., the date and time at which
quality assured data begins to be recorded by CEMS(s) installed at that
location), and during the first 2,160 quality assured monitor operating
hours following initial certification of the required NOX-
diluent, NOX concentration, or flow monitoring system(s) at
the unit or stack location, the owner or operator shall provide
substitute data required under this subpart according to the procedures
in paragraphs (b) and (c) of this section. The owner or operator of a
unit shall use these procedures for no longer than three years (26,280
clock hours) following initial certification.
    (b) SO2, CO2, or O2 concentration
data, and moisture data. For each hour of missing SO2 or
CO2 emissions concentration data (including CO2
data converted from O2 data using the procedures in appendix
F of this part), or missing O2 or CO2 diluent
concentration data used to calculate heat input, or missing moisture
data, the owner or operator shall calculate the substitute data as
follows:
    (1) Whenever prior quality-assured data exist, the owner or
operator shall substitute, by means of the data acquisition and
handling system, for each hour of missing data, the average of the
hourly SO2, CO2, or O2 concentrations
or moisture percentages recorded by a certified monitor for the unit
operating hour immediately before and the unit operating hour
immediately after the missing data period.
    (2) Whenever no prior quality assured SO2,
CO2, or O2 concentration data or moisture data
exist, the owner or operator shall substitute, as applicable, for each
hour of missing data, the maximum potential SO2
concentration or the maximum potential CO2 concentration or
the minimum potential O2 concentration or (unless Equation
19-3, 19-4 or 19-8 in Method 19 in appendix A-7 to part 60 of this
chapter is used to determine NOX emission rate) the minimum
potential moisture percentage, as specified, respectively, in sections
<IP_ADDRESS>, <IP_ADDRESS>, <IP_ADDRESS> and 2.1.5 of appendix A to this part. If
Equation 19-3, 19-4 or 19-8 in Method 19 in appendix A-7 to part 60 of
this chapter is used to determine NOX emission rate,
substitute the maximum potential moisture percentage, as specified in
section 2.1.6 of appendix A to this part.
* * * * *

0
15. Section 75.32 is amended by revising the first sentence of
paragraph (a) introductory text, to read as follows:

Sec.  75.32  Determination of monitor data availability for standard
missing data procedures.

    (a) Following initial certification of the required SO2,
CO2, O2, or moisture monitoring system(s) at a
particular unit or stack location (i.e., the date and time at which
quality assured data begins to be recorded by CEMS(s) at that
location), the owner or operator shall begin calculating the percent
monitor data availability as described in paragraph (a)(1) of this
section, and shall, upon completion of the first 720 quality-assured
monitor operating hours, record, by means of the automated data
acquisition and handling system, the percent monitor data availability
for each monitored parameter.* * *
* * * * *

0
16. Section 75.33 is amended by:
0
a. Revising the section heading; and
0
b. Revising Table 1 and the footnotes below Table 1, to read as
follows:

Sec.  75.33  Standard missing data procedures for SO2,
NOX, and flow rate.

* * * * *

Table 1--Missing Data Procedure for SO2 CEMS, CO2 CEMS, Moisture CEMS, and Diluent (CO2 or O2) Monitors for Heat
                                               Input Determination
----------------------------------------------------------------------------------------------------------------
                    Trigger conditions                                      Calculation routines
----------------------------------------------------------------------------------------------------------------
    Monitor data availability       Duration (N) of CEMS
            (percent)                outage (hours) \2\              Method                Lookback period
----------------------------------------------------------------------------------------------------------------
95 or more......................  N <= 24                   Average................  HB/HA.
                                  N > 24                    For SO2, CO2, and
                                                             H2O**, the greater of:
                                                            Average................  HB/HA.
                                                            90th percentile........  720 hours.*
                                                            For O2 and H2O\X\, the   HB/HA.
                                                             lesser of:
                                                            10th percentile........  720 hours.*
90 or more, but below 95........  N <= 8                    Average................  HB/HA.
                                  N > 8                     For SO2, CO2, and H2O
                                                             **, the greater of:
                                                            Average................  HB/HA.
                                                            95th percentile........  720 hours.*
                                                            For O2 and H2O\X\, the
                                                             lesser of:
                                                            Average................  HB/HA.
                                                            5th Percentile.........  720 hours.*
80 or more, but below 90........  N > 0                     For SO2, CO2, and H2O
                                                             **,
                                                            Maximum value\1\.......  720 hours.*
                                                            For O2 and H2O\X\:

                                                            Minimum value\1\.......  720 hours.*
Below 80........................  N > 0                     Maximum potential
                                                             concentration\3\ or %
                                                             (for SO2, CO2, and
                                                             H2O**) or
                                                            Minimum potential        None.
                                                             concentration or %
                                                             (for O2 and H2O\X\).
----------------------------------------------------------------------------------------------------------------
HB/HA = hour before and hour after the CEMS outage.
* Quality-assured, monitor operating hours, during unit operation. May be either fuel-specific or non-fuel-
  specific. For units that report data only for the ozone season, include only quality assured monitor operating
  hours within the ozone season in the lookback period. Use data from no earlier than 3 years prior to the
  missing data period.
\1\ Where a unit with add-on SO2 emission controls can demonstrate that the controls are operating properly
  during the missing data period, as provided in Sec.   75.34, the unit may use the maximum controlled
  concentration from the previous 720 quality-assured monitor operating hours.
\2\ During unit operating hours.
\3\ Where a unit with add-on SO2 emission controls can demonstrate that the controls are operating properly
  during the missing data period, the unit may report the greater of: (a) the maximum expected SO2 concentration
  or (b) 1.25 times the maximum controlled value from the previous 720 quality-assured monitor operating hours
  (see Sec.   75.34).
\X\ Use this algorithm for moisture except when Equation 19-3, 19-4 or 19-8 in Method 19 in appendix A-7 to part
  60 of this chapter is used for NOX emission rate.
** Use this algorithm for moisture only when Equation 19-3, 19-4 or 19-8 in Method 19 in appendix A-7 to part 60
  of this chapter is used for NOX emission rate.

* * * * *

0
17. Section 75.34 is amended by:
0
a. Revising paragraph (a)(2)(ii); and
0
b. Revising the first sentence of paragraph (d), to read as follows:

Sec.  75.34  Units with add-on emission controls.

    (a) * * *
    (2) * * *
    (ii) For the purposes of the missing data lookback periods
described under Sec. Sec.  75.33 (c)(1), (c)(2), (c)(3) and (c)(5) of
this section, the substitute data values shall be taken from the
appropriate database, depending on the date(s) and hour(s) of the
missing data period. That is, if the missing data period occurs inside
the ozone season, the ozone season data shall be used to provide
substitute data. If the missing data period occurs outside the ozone
season, data from outside the ozone season shall be used to provide
substitute data.
* * * * *
    (d) In order to implement the options in paragraphs (a)(1), (a)(3)
and (a)(5) of this section; and Sec. Sec.  75.31(c)(3) and 75.72(c)(3),
the owner or operator shall keep records of information as described in
Sec.  75.58(b)(3) to verify the proper operation of all add-on
SO2 or NOX emission controls, during all periods
of SO2 or NOX emission missing data. * * *

Sec. Sec.  75.38-75.39  [Removed and reserved]

0
18. Sections 75.38 and 75.39 are removed and reserved.

0
19. Section 75.47 is amended by:
0
a. Revising paragraph (b)(2); and
0
b. Removing paragraphs (b)(3) and (c), to read as follows:

Sec.  75.47  Criteria for a class of affected units.

* * * * *
    (b) * * *
    (2) A description of the class of affected units, including data
describing all of the affected units that will comprise the class.

0
20. Section 75.53 is amended by:
0
a. Revising paragraphs (e)(1)(i)(E), (e)(1)(iv) introductory text,
(e)(1)(x), (g)(1)(i)(A), (g)(1)(i)(C), (g)(1)(i)(E), (g)(1)(i)(F),
(g)(1)(iii) introductory text, (g)(1)(v)(F), (g)(1)(v)(G),
(g)(1)(vi)(H), and (g)(1)(vi)(I);
0
b. Adding paragraph (g)(1)(vi)(J); and
0
c. Revising paragraphs (h)(2)(i) and (h)(5), to read as follows:

Sec.  75.53  Monitoring plan.

* * * * *
    (e) * * *
    (1) * * *
    (i) * * *
    (E) Type(s) of emission controls for SO2,
NOX, and particulates installed or to be installed,
including specifications of whether such controls are pre-combustion,
post-combustion, or integral to the combustion process; control
equipment code, installation date, and optimization date; control
equipment retirement date (if applicable); primary/secondary controls
indicator; and an indicator for whether the controls are an original
installation;
* * * * *
    (iv) Identification and description of each monitoring system
component (including each monitor and its identifiable components, such
as analyzer and/or probe) in the CEMS (e.g., SO2 pollutant
concentration monitor, flow monitor, moisture monitor; NOX
pollutant concentration monitor, and diluent gas monitor), the
continuous opacity monitoring system, or the excepted monitoring system
(e.g., fuel flowmeter, data acquisition and handling system),
including:
* * * * *
    (x) For each parameter monitored: Scale, maximum potential
concentration (and method of calculation), maximum expected
concentration (if applicable) (and method of calculation), maximum
potential flow rate (and method of calculation), maximum potential
NOX emission rate, span value, full-scale range, daily
calibration units of measure, span effective date/hour, span
inactivation date/hour, indication of whether dual spans are required,
default high range value, flow rate span, and flow rate span value and
full scale value (in scfh) for each unit or stack using SO2,
NOX, CO2, O2, or flow component
monitors.
* * * * *
    (g) * * *
    (1) * * *
    (i) * * *
    (A) A representation of the exhaust configuration for the units in
the monitoring plan. On and after April 27, 2011, provide the
activation date and deactivation date (if applicable) of the
configuration. Provide the ID number of each unit and assign a unique
ID number to each common stack, common pipe multiple stack and/or
multiple pipe associated with the unit(s)

represented in the monitoring plan. For common and multiple stacks and/
or pipes, provide the activation date and deactivation date (if
applicable) of each stack and/or pipe;
* * * * *
    (C) The stack exit height (ft) above ground level and ground level
elevation above sea level, and the inside cross-sectional area (ft\2\)
at the flue exit and at the flow monitoring location (for units with
flow monitors, only). Also use appropriate codes to indicate the
material(s) of construction and the shape(s) of the stack or duct
cross-section(s) at the flue exit and (if applicable) at the flow
monitor location. On and after April 27, 2011, provide the activation
date and deactivation date (if applicable) for the information in this
paragraph (g)(1)(i)(C);
* * * * *
    (E) The type(s) of emission controls that are used to reduce
SO2, NOX, and particulate emissions from each
unit. Also provide the installation date, optimization date, and
retirement date (if applicable) of the emission controls, and indicate
whether the controls are an original installation;
    (F) Maximum hourly heat input capacity of each unit. On and after
April 27, 2011, provide the activation date and deactivation date (if
applicable) for this parameter; and
* * * * *
    (iii) For each required continuous emission monitoring system, each
fuel flowmeter system, and each continuous opacity monitoring system,
identify and describe the major monitoring components in the monitoring
system (e.g., gas analyzer, flow monitor, opacity monitor, moisture
sensor, fuel flowmeter, DAHS software, etc.). Other important
components in the system (e.g., sample probe, PLC, data logger, etc.)
may also be represented in the monitoring plan, if necessary. Provide
the following specific information about each component and monitoring
system:
* * * * *
    (v) * * *
    (F) Effective date/hour, and (if applicable) inactivation date/hour
of each span value. On and after April 27, 2011, provide the activation
date and deactivation date (if applicable) for the measurement scale
and dual span information in paragraphs (g)(1)(v)(A), (g)(1)(v)(G), and
(g)(1)(v)(H) of this section;
    (G) An indication of whether dual spans are required. If two span
values are required, then, on and after April 27, 2011, indicate
whether an autoranging analyzer is used to represent the two
measurement scales; and
* * * * *
    (vi) * * *
    (H) Date and hour that the value is no longer effective (if
applicable);
    (I) For units using the excepted methodology under Sec.  75.19, the
applicable SO2 emission factor; and
    (J) On and after April 27, 2011, group identification code.
* * * * *
    (h) * * *
    (2) * * *
    (i) Electronic. Unit operating and capacity factor information
demonstrating that the unit qualifies as a peaking unit, as defined in
Sec.  72.2 of this chapter for the current calendar year or ozone
season, including: capacity factor data for three calendar years (or
ozone seasons) as specified in the definition of peaking unit in Sec.
72.2 of this chapter; the method of qualification used; and an
indication of whether the data are actual or projected data. On and
after April 27, 2011, provide the activation date and deactivation date
(if applicable) for the peaking unit qualification information in this
paragraph (h)(2)(i).
* * * * *
    (5) For qualification as a gas-fired unit, as defined in Sec.  72.2
of this part, the designated representative shall include in the
monitoring plan, in electronic format, the following: current calendar
year, fuel usage data for three calendar years (or ozone seasons) as
specified in the definition of gas-fired in Sec.  72.2 of this chapter,
the method of qualification used, and an indication of whether the data
are actual or projected data. On and after April 27, 2011, provide the
activation date and deactivation date (if applicable) for the gas-fired
unit qualification information in this paragraph (h)(5).
* * * * *

0
21. Section 75.57 is amended by:
0
a. Revising paragraph (a)(5);
0
b. Revising paragraph (a)(6);
0
c. Adding paragraph (a)(7);
0
d. Revising Table 4a; and
0
e. Removing paragraphs (i) and (j), to read as follows:

Sec.  75.57  General recordkeeping provisions.

* * * * *
    (a) * * *
    (5) The current monitoring plan as specified in Sec.  75.53,
beginning with the initial submission required by Sec.  75.62;
    (6) The quality control plan as described in section 1 of appendix
B to this part, beginning with the date of provisional certification;
and
    (7) The information required by sections 6.1.2(b) and (c) of
appendix A to this part.
* * * * *

     Table 4a--Codes for Method of Emissions and Flow Determination
------------------------------------------------------------------------
                                  Hourly emissions/flow measurement or
             Code                          estimation method
------------------------------------------------------------------------
1............................  Certified primary emission/flow
                                monitoring system.
2............................  Certified backup emission/flow monitoring
                                system.
3............................  Approved alternative monitoring system.
4............................  Reference method:
                               SO2: Method 6C.
                               Flow: Method 2 or its allowable
                                alternatives under appendix A to part 60
                                of this chapter.
                               NOX: Method 7E.
                               CO2 or O2: Method 3A.
5............................  For units with add[dash]on SO2 and/or NOX
                                emission controls: SO2 concentration or
                                NOX emission rate estimate from Agency
                                preapproved parametric monitoring
                                method.
6............................  Average of the hourly SO2 concentrations,
                                CO2 concentrations, O2 concentrations,
                                NOX concentrations, flow rates, moisture
                                percentages or NOX emission rates for
                                the hour before and the hour following a
                                missing data period.
7............................  Initial missing data procedures used.
                                Either: (a) the average of the hourly
                                SO2 concentration, CO2 concentration, O2
                                concentration, or moisture percentage
                                for the hour before and the hour
                                following a missing data period; or (b)
                                the arithmetic average of all NOX
                                concentration, NOX emission rate, or
                                flow rate values at the corresponding
                                load range (or a higher load range), or
                                at the corresponding operational bin
                                (non-load-based units, only); or (c) the
                                arithmetic average of all previous NOX
                                concentration, NOX emission rate, or
                                flow rate values (non-load-based units,
                                only).

8............................  90th percentile hourly SO2 concentration,
                                CO2 concentration, NOX concentration,
                                flow rate, moisture percentage, or NOX
                                emission rate or 10th percentile hourly
                                O2 concentration or moisture percentage
                                in the applicable lookback period
                                (moisture missing data algorithm depends
                                on which equations are used for
                                emissions and heat input).
9............................  95th percentile hourly SO2 concentration,
                                CO2 concentration, NOX concentration,
                                flow rate, moisture percentage, or NOX
                                emission rate or 5th percentile hourly
                                O2 concentration or moisture percentage
                                in the applicable lookback period
                                (moisture missing data algorithm depends
                                on which equations are used for
                                emissions and heat input).
10...........................  Maximum hourly SO2 concentration, CO2
                                concentration, NOX concentration, flow
                                rate, moisture percentage, or NOX
                                emission rate or minimum hourly O2
                                concentration or moisture percentage in
                                the applicable lookback period (moisture
                                missing data algorithm depends on which
                                equations are used for emissions and
                                heat input).
11...........................  Average of hourly flow rates, NOX
                                concentrations or NOX emission rates in
                                corresponding load range, for the
                                applicable lookback period. For non-load-
                                based units, report either the average
                                flow rate, NOX concentration or NOX
                                emission rate in the applicable lookback
                                period, or the average flow rate or NOX
                                value at the corresponding operational
                                bin (if operational bins are used).
12...........................  Maximum potential concentration of SO2,
                                maximum potential concentration of CO2,
                                maximum potential concentration of NOX
                                maximum potential flow rate, maximum
                                potential NOX emission rate, maximum
                                potential moisture percentage, minimum
                                potential O2 concentration or minimum
                                potential moisture percentage, as
                                determined using Sec.   72.2 of this
                                chapter and section 2.1 of appendix A to
                                this part (moisture missing data
                                algorithm depends on which equations are
                                used for emissions and heat input).
13...........................  Maximum expected concentration of SO2,
                                maximum expected concentration of NOX,,
                                or maximum controlled NOX emission rate.
                                (See Sec.   75.34(a)(5)).
14...........................  Diluent cap value (if the cap is
                                replacing a CO2 measurement, use 5.0
                                percent for boilers and 1.0 percent for
                                turbines; if it is replacing an O2
                                measurement, use 14.0 percent for
                                boilers and 19.0 percent for turbines).
15...........................  1.25 times the maximum hourly controlled
                                SO2 concentration, NOX concentration at
                                the corresponding load or operational
                                bin, or NOX emission rate at the
                                corresponding load or operational bin,
                                in the applicable lookback period (See
                                Sec.   75.34(a)(5)).
16...........................  SO2 concentration value of 2.0 ppm during
                                hours when only ``very low sulfur
                                fuel``, as defined in Sec.   72.2 of
                                this chapter, is combusted.
17...........................  Like-kind replacement non-redundant
                                backup analyzer.
19...........................  200 percent of the MPC; default high
                                range value.
20...........................  200 percent of the full-scale range
                                setting (full-scale exceedance of high
                                range).
21...........................  Negative hourly CO2 concentration, SO2
                                concentration, NOX concentration,
                                percent moisture, or NOX emission rate
                                replaced with zero.
22...........................  Hourly average SO2 or NOX concentration,
                                measured by a certified monitor at the
                                control device inlet (units with add-on
                                emission controls only).
23...........................  Maximum potential SO2 concentration, NOX
                                concentration, CO2 concentration, or NOX
                                emission rate, or minimum potential O2
                                concentration or moisture percentage,
                                for an hour in which flue gases are
                                discharged through an unmonitored bypass
                                stack.
24...........................  Maximum expected NOX concentration, or
                                maximum controlled NOX emission rate for
                                an hour in which flue gases are
                                discharged downstream of the NOX
                                emission controls through an unmonitored
                                bypass stack, and the add-on NOx
                                emission controls are confirmed to be
                                operating properly.
25...........................  Maximum potential NOX emission rate
                                (MER). (Use only when a NOX
                                concentration full-scale exceedance
                                occurs and the diluent monitor is
                                unavailable.)
26...........................  1.0 mmBtu/hr substituted for Heat Input
                                Rate for an operating hour in which the
                                calculated Heat Input Rate is zero or
                                negative.
40...........................  Fuel specific default value (or prorated
                                default value) used for the hour.
53...........................  Other quality-assured data approved
                                through petition. These are treated as
                                available hours for percent monitor
                                availability calculations and are
                                included in missing data lookback.
54...........................  Other quality assured methodologies
                                approved through petition. These hours
                                are included in missing data lookback
                                and are treated as unavailable hours for
                                percent monitor availability
                                calculations.
55...........................  Other substitute data approved through
                                petition. These hours are not included
                                in missing data lookback and are treated
                                as unavailable hours for percent monitor
                                availability calculations.
------------------------------------------------------------------------

* * * * *

0
22. Section 75.58 is amended by:
0
a. Revising paragraphs (b)(3) and (d)(4)(ii); and
0
b. Adding paragraph (d)(4)(iii), to read as follows:

Sec.  75.58  General recordkeeping provisions for specific situations.

* * * * *
    (b) * * *
    (3) Except as otherwise provided in Sec.  75.34(d), for units with
add-on SO2 or NOX emission controls following the
provisions of Sec. Sec.  75.34(a)(1), (a)(2), (a)(3) or (a)(5), the
owner or operator shall record:
    (i) Parametric data which demonstrate, for each hour of missing
SO2 or NOX emission data, the proper operation of
the add-on emission controls, as described in the quality assurance/
quality control program for the unit. The parametric data shall be
maintained on site and shall be submitted, upon request, to the
Administrator, EPA Regional office, State, or local agency;
    (ii) A flag indicating, for each hour of missing SO2 or
NOX emission data, either that the add-on emission controls
are operating properly, as evidenced by all parameters being within the
ranges specified in the quality assurance/quality control program, or
that the add-on emission controls are not operating properly.
* * * * *
    (d) * * *
    (4) * * *
    (ii) For boilers, hourly average boiler O2 reading
(percent, rounded to the nearest tenth) (flag if value exceeds by more
than 2 percentage points the O2 level recorded at the same
heat input during the previous NOX emission rate test); and
    (iii) On and after April 27, 2011, operating condition codes for
the following:
    (A) Unit operated on emergency fuel;

    (B) Correlation curve for the fuel mixture has expired;
    (C) Operating parameter is outside of normal limits;
    (D) Uncontrolled hour;
    (E) Operation above highest tested heat input rate point on the
curve;
    (F) Operating parameter data missing or invalid;
    (G) Designated operational and control equipment parameters within
normal limits; and
    (H) Operation below lowest tested heat input rate point on the
curve.
* * * * *

0
23. Section 75.59 is amended by:
0
a. Revising paragraph (a)(1) introductory text;
0
b. Revising paragraph (a)(1)(iii);
0
c. Revising paragraphs (a)(3) introductory text, (a)(5) introductory
text, and (a)(5)(ii) introductory text;
0
d. Revising paragraph (a)(5)(ii)(L);
0
e. Revising paragraphs (a)(5)(iii)(F) and (G);
0
f. Adding paragraph (a)(5)(iii)(H);
0
g. Revising paragraph (a)(6) introductory text;
0
h. Removing and reserving paragraph (a)(7)(vii);
0
i. Removing the heading of reserved paragraph (a)(7)(viii);
0
j. Removing paragraph (a)(7)(x);
0
k. Revising paragraph (a)(9) introductory text;
0
l. Revising paragraph (a)(9)(vi);
0
m. Adding paragraphs (a)(9)(x) and (xi);
0
n. Revising paragraphs (a)(12)(iv)(E) and (F);
0
o. Adding paragraph (a)(12)(iv)(G);
0
p. Removing and reserving paragraph (a)(14);
0
q. Adding paragraph (a)(15);
0
r. Adding paragraph (b)(6);
0
s. Revising paragraph (c) introductory text;
0
t. Revising paragraphs (d)(3)(x) and (xi);
0
u. Adding paragraphs (d)(3)(xii) and (xiii);
0
v. Adding paragraph (d)(4);
0
w. Removing paragraph (e); and
0
x. Redesignating paragraph (f) as paragraph (e), to read as follows:

Sec.  75.59  Certification, quality assurance, and quality control
record provisions.

* * * * *
    (a) * * *
    (1) For each SO2 or NOX pollutant
concentration monitor, flow monitor, CO2 emissions
concentration monitor (including O2 monitors used to
determine CO2 emissions), or diluent gas monitor (including
wet- and dry-basis O2 monitors used to determine percent
moisture), the owner or operator shall record the following for all
daily and 7-day calibration error tests, and all off-line calibration
demonstrations, including any follow-up tests after corrective action:
* * * * *
    (iii) On and after April 27, 2011, date, hour, and minute;
* * * * *
    (3) For each SO2 or NOX pollutant
concentration monitor, CO2 emissions concentration monitor
(including O2 monitors used to determine CO2
emissions), or diluent gas monitor (including wet- and dry-basis
O2 monitors used to determine percent moisture), the owner
or operator shall record the following for the initial and all
subsequent linearity check(s), including any follow-up tests after
corrective action.
* * * * *
    (5) For each SO2 pollutant concentration monitor, flow
monitor, each CO2 emissions concentration monitor (including
any O2 concentration monitor used to determine
CO2 mass emissions or heat input), each NOX-
diluent continuous emission monitoring system, each NOX
concentration monitoring system, each diluent gas (O2 or
CO2) monitor used to determine heat input, each moisture
monitoring system, and each approved alternative monitoring system, the
owner or operator shall record the following information for the
initial and all subsequent relative accuracy test audits:
* * * * *
    (ii) Individual test run data from the relative accuracy test audit
for the SO2 concentration monitor, flow monitor,
CO2 emissions concentration monitor, NOX-diluent
continuous emission monitoring system, diluent gas (O2 or
CO2) monitor used to determine heat input, NOX
concentration monitoring system, moisture monitoring system, or
approved alternative monitoring system, including:
* * * * *
    (L) Average gross unit load, expressed as a total gross unit load,
rounded to the nearest MWe, or as steam load, rounded to the nearest
thousand lb/hr; on and after April 27, 2011, for units that do not
produce electrical or thermal output, record, instead, the average
stack gas velocity at the operating level being tested; and
* * * * *
    (iii) * * *
    (F) Bias test results as specified in section 7.6.4 of appendix A
to this part;
    (G) Bias adjustment factor from Equation A-12 in appendix A to this
part for any monitoring system that failed the bias test (except as
otherwise provided in section 7.6.5 of appendix A to this part) and
1.000 for any monitoring system that passed the bias test; and
    (H) On and after April 27, 2011, RATA frequency code.
* * * * *
    (6) For each SO2, NOX, or CO2
pollutant concentration monitor, each component of a NOX-
diluent continuous emission monitoring system, and each CO2
or O2 monitor used to determine heat input, the owner or
operator shall record the following information for the cycle time
test:
* * * * *
    (7) * * *
    (vii) [Reserved]
    (viii) [Reserved]
* * * * *
    (9) When hardcopy relative accuracy test reports, certification
reports, recertification reports, or semiannual or annual reports for
gas or flow rate CEMS are required or requested under Sec.  75.60(b)(6)
or Sec.  75.63, the reports shall include, at a minimum, the following
elements (as applicable to the type(s) of test(s) performed):
* * * * *
    (vi) Laboratory calibrations of the source sampling equipment.
* * * * *
    (x) For testing involving use of EPA Protocol gases, the owner or
operator shall record in electronic and hardcopy format the following
information, as applicable:
    (A) On and after September 26, 2011, for each gas monitor, for both
low and high measurement ranges, record the following information for
the mid-level or high-level EPA Protocol gas (as applicable) that is
used for daily calibration error tests, and the low-, mid-, and high-
level gases used for quarterly linearity checks. For O2, if
purified air is used as the high-level gas for daily calibrations or
linearity checks, record the following information for the low- and
mid-level EPA Protocol gas used for linearity checks, instead:
    (1) Gas level code;
    (2) A code for the type of EPA Protocol gas used;
    (3) The PGVP vendor ID issued by EPA for the EPA Protocol gas
production site that supplied the EPA Protocol gas cylinder;
    (4) The expiration date for the EPA Protocol gas cylinder; and
    (5) The cylinder number.
    (B) On and after September 26, 2011, for each usage of Reference
Method 3A in appendix A-2 to part 60 of this chapter, or Method 6C or
7E in appendix A-4 to part 60 of this chapter

performed using EPA Protocol gas for the certification,
recertification, routine quality assurance or diagnostic testing
(reportable diagnostics, only) of a Part 75 monitoring system, record
the information required by paragraphs (a)(9)(x)(A)(1) through (5) of
this section.
    (xi) On and after March 27, 2012, for all RATAs performed pursuant
to Sec.  75.74(c)(2)(ii), section 6.5 of appendix A to this part and
section 2.3.1 of appendix B to this part, and for all NOX
emission testing performed pursuant to section 2.1 of appendix E to
this part, or Sec.  75.19(c)(1)(iv), the owner or operator shall record
the following information as provided by the AETB:
    (A) The name, telephone number and e-mail address of the Air
Emission Testing Body;
    (B) The name of each on-site Qualified Individual, as defined in
Sec.  72.2 of this chapter;
    (C) For the reference method(s) that were performed, the date(s)
that each on-site Qualified Individual took and passed the relevant
qualification exam(s) required by ASTM D7036-04 (incorporated by
reference, see Sec.  75.6); and
    (D) The name and e-mail address of each qualification exam
provider.
* * * * *
    (12) * * *
    (iv) * * *
    (E) Type of extension;
    (F) Quarter and year; and
    (G) On and after April 27, 2011, fuel code for Ozone Season Only
reporters under Sec.  75.74(c).
* * * * *
    (14) [Reserved]
    (15) On and after March 27, 2012, for all RATAs performed pursuant
to Sec.  75.74(c)(2)(ii), section 6.5 of appendix A to this part or
section 2.3.1 of appendix B to this part, the owner or operator shall
record in electronic format the following information as provided by
the AETB:
    (i) The name, telephone number and e-mail address of the Air
Emission Testing Body;
    (ii) The name of each on-site Qualified Individual, as defined in
Sec.  72.2 of this chapter;
    (iii) For the reference method(s) that were performed, the date(s)
that each on-site Qualified Individual took and passed the relevant
qualification exam(s) required by ASTM D7036-04 (incorporated by
reference, see Sec.  75.6); and
    (iv) The name and e-mail address of each qualification exam
provider.
    (b) * * *
    (6) On and after March 27, 2012, for all stack testing performed
pursuant to section 2.1 of appendix E to this part, the owner or
operator shall record in electronic format the following information as
provided by the AETB:
    (i) The name, telephone number and e-mail address of the Air
Emission Testing Body;
    (ii) The name of each on-site Qualified Individual, as defined in
Sec.  72.2 of this chapter;
    (iii) For the reference method(s) that were performed, the date(s)
that each on-site Qualified Individual took and passed the relevant
qualification exam(s) required by ASTM D7036-04 (incorporated by
reference, see Sec.  75.6); and
    (iv) The name and e-mail address of each qualification exam
provider.
    (c) Except as otherwise provided in Sec.  75.58(b)(3)(i), for units
with add-on SO2 or NOX emission controls
following the provisions of Sec.  75.34(a)(1) or (a)(2), the owner or
operator shall keep the following records on-site in the quality
assurance/quality control plan required by section 1 of appendix B to
this part:
* * * * *
    (d) * * *
    (3) * * *
    (x) Documentation supporting the qualification of all units in the
group for reduced testing, in accordance with the criteria established
in Sec.  75.19(c)(1)(iv)(B)(1);
    (xi) Purpose of group tests;
    (xii) On and after April 27, 2011, the number of tests for group;
and
    (xiii) On and after April 27, 2011, the number of units in group.
    (4) On and after March 27, 2012, for all NOX emission
testing performed pursuant to Sec.  75.19(c)(1)(iv), the owner or
operator shall record in electronic format the following information as
provided by the AETB:
    (i) The name, telephone number and e-mail address of the Air
Emission Testing Body;
    (ii) The name of each on-site Qualified Individual, as defined in
Sec.  72.2 of this chapter;
    (iii) For the reference method(s) that were performed, the date(s)
that each on-site Qualified Individual took and passed the relevant
qualification exam(s) required by ASTM D7036-04 (incorporated by
reference, see Sec.  75.6); and
    (iv) The name and e-mail address of each qualification exam
provider.

Sec.  75.60  [Amended]

0
24. Section 75.60 is amended by removing paragraph (b)(8).

0
25. Section 75.61 is amended by:
0
a. Revising paragraph (a)(1) introductory text;
0
b. Revising the first sentence of paragraph (a)(5) introductory text;
and
0
c. Revising paragraph (a)(8), to read as follows:

Sec.  75.61  Notifications.

    (a) * * *
    (1) Initial certification and recertification test notifications.
The owner or operator or designated representative for an affected unit
shall submit written notification of initial certification tests and
revised test dates as specified in Sec.  75.20 for continuous emission
monitoring systems, for alternative monitoring systems under subpart E
of this part, or for excepted monitoring systems under appendix E to
this part, except as provided in paragraphs (a)(1)(iii), (a)(1)(iv) and
(a)(4) of this section. The owner or operator shall also provide
written notification of testing performed under Sec.
75.19(c)(1)(iv)(A) to establish fuel-and-unit-specific NOX
emission rates for low mass emissions units. Such notifications are not
required, however, for initial certifications and recertifications of
excepted monitoring systems under appendix D to this part.
* * * * *
    (5) Periodic relative accuracy test audits, appendix E retests, and
low mass emissions unit retests. The owner or operator or designated
representative of an affected unit shall submit written notice of the
date of periodic relative accuracy testing performed under section
2.3.1 of appendix B to this part, of periodic retesting performed under
section 2.2 of appendix E to this part, and of periodic retesting of
low mass emissions units performed under Sec.  75.19(c)(1)(iv)(D), no
later than 21 days prior to the first scheduled day of testing. * * *
* * * * *
    (8) Certification deadline date for new or newly affected units.
The designated representative of a new or newly affected unit shall
provide notification of the date on which the relevant deadline for
initial certification is reached, either as provided in Sec.  75.4(b)
or Sec.  75.4(c), or as specified in a State or Federal SO2
or NOX mass emission reduction program that incorporates by
reference, or otherwise adopts, the monitoring, recordkeeping, and
reporting requirements of subpart F, G, or H of this part. The
notification shall be submitted no later than 7 calendar days after the
applicable certification deadline is reached.
* * * * *

0
26. Section 75.62 is amended by adding paragraph (d) to read as
follows:

Sec.  75.62  Monitoring plan submittals.

* * * * *
    (d) On and after April 27, 2011, consistent with Sec.  72.21 of
this chapter, a hardcopy cover letter signed by the Designated
Representative (DR) shall accompany each hardcopy monitoring plan
submittal. The cover letter shall include the certification statement
described in Sec.  72.21(b) of this chapter, and shall be submitted to
the applicable EPA Regional Office and to the appropriate State or
local air pollution control agency. For electronic monitoring plan
submittals to the Administrator, a cover letter is not required.
However, at his or her discretion, the DR may include important
explanatory text or comments with an electronic monitoring plan
submittal, so long as the information is provided in an electronic
format that is compatible with the other data required to be reported
under this section.

0
27. Section 75.63 is amended by adding paragraph (d) to read as
follows:

Sec.  75.63  Initial certification or recertification application.

* * * * *
    (d) Consistent with Sec.  72.21 of this chapter, a hardcopy cover
letter signed by the Designated Representative (DR) shall accompany the
hardcopy portion of each certification or recertification application.
The cover letter shall include the certification statement described in
Sec.  72.21(b) of this chapter, and shall be submitted to the
applicable EPA Regional Office and to the appropriate State or local
air pollution control agency. For the electronic portion of a
certification or recertification application submitted to the
Administrator, a cover letter is not required. However, at his or her
discretion, the DR may include important explanatory text or comments
with the electronic portion of a certification or recertification
application, so long as the information is provided in an electronic
format compatible with the other data required to be reported under
this section.
0
28. Section 75.64 is amended by:
0
a. Revising paragraph (a)(5);
0
b. Revising paragraph (a)(7)(xi);
0
c. Revising paragraph (a)(7)(xii)(D);
0
d. Adding paragraph (a)(7)(xiii);
0
e. Redesignating paragraph (a)(127) as paragraph (a)(12); and
0
f. Revising paragraph (g), to read as follows:

Sec.  75.64  Quarterly reports.

    (a) * * *
    (5) The daily calibration error test and daily interference check
information required in Sec.  75.59(a)(1) and (a)(2) must always be
included in the electronic quarterly emissions report. All other
certification, quality assurance, and quality control information in
Sec.  75.59 that is not excluded from electronic reporting under
paragraph (a)(2) or (a)(7) of this section shall be submitted
separately, either prior to or concurrent with the submittal of the
relevant electronic quarterly emissions report. However, reporting of
the information in Sec.  75.59(a)(9)(x) is not required until September
26, 2011, and reporting of the information in Sec.  75.59(a)(15),
(b)(6), and (d)(4) is not required until March 27, 2012.
* * * * *
    (7) * * *
    (xi) Data and results of RATAs that are aborted or invalidated due
to problems with the reference method or operational problems with the
unit and data and results of linearity checks that are aborted or
invalidated due to problems unrelated to monitor performance;
    (xii) * * *
    (D) The data under Sec.  75.59(a)(7)(ix)(A) through (F) shall be
reported for all flow RATAs at rectangular stacks or ducts in which
Method 2 in appendices A-1 and A-2 to part 60 of this chapter is used
and a wall effects adjustment factor is applied; and
    (xiii) The certification required by section 6.1.2(b) of appendix A
to this part and recorded under Sec.  75.57(a)(7).
* * * * *
    (g) At his or her discretion, the DR may include important
explanatory text or comments with an electronic quarterly report
submittal, so long as the information is provided in a format that is
compatible with the other data required to be reported under this
section.

Subpart I--[Removed]

0
29. Subpart I, consisting of Sec. Sec.  75.80 through 75.84, is
removed.

0
30. Appendix A to part 75 is amended by:
0
a. Revising section 1.1;
0
b. Removing sections 2.1.7, <IP_ADDRESS> through <IP_ADDRESS>, and 2.2.3;
0
c. Removing paragraph (c) of section 3.1 and paragraph (3) of section
3.2;
0
d. Removing sections 3.3.8 and 3.4.3;
0
e. Removing the introductory text of section 4 and adding paragraphs
(a), (b), and (c) in its place;
0
f. Revising paragraph (6) of section 4;
0
g. Revising paragraphs (a) and (b) of Section 5.1.4;
0
h. Removing paragraphs (c) and (d) of Section 5.1.4;
0
i. Revising the first sentence in Section 5.1.5;
0
j. Removing section 5.1.9;
0
k. Revising section 6.1.2;
0
l. Revising the first sentence of section 6.2 introductory text;
0
m. Removing paragraphs (g) and (h) of section 6.2;
0
n. Revising the introductory text of section 6.3.1;
0
o. Revising the introductory text of sections 6.4 and 6.5;
0
p. Revising paragraphs (c), (e), and (g) of section 6.5;
0
q. Revising section 6.5.1;
0
r. Removing paragraph (c) of section 6.5.6;
0
s. Revising paragraphs (a) and (b) of section 6.5.7;
0
t. Revising section 6.5.10;
0
u. Revising the heading and introductory text of section 7.3;
0
v. Revising section 7.3.1;
0
w. Revising the introductory text of section 7.6;
0
x. Revising section 7.6.1; and
0
y. Revising paragraphs (b) and (f) of section 7.6.5, to read as
follows:

Appendix A to Part 75--Specifications and Procedures

1. Installation and Measurement Location

1.1 Gas Monitors

    (a) Following the procedures in section 8.1.1 of Performance
Specification 2 in appendix B to part 60 of this chapter, install
the pollutant concentration monitor or monitoring system at a
location where the pollutant concentration and emission rate
measurements are directly representative of the total emissions from
the affected unit. Select a representative measurement point or path
for the monitor probe(s) (or for the path from the transmitter to
the receiver) such that the SO2, CO2,
O2, or NOX concentration monitoring system or
NOX-diluent CEMS (NOX pollutant concentration
monitor and diluent gas monitor) will pass the relative accuracy
test (see section 6 of this appendix).
    (b) It is recommended that monitor measurements be made at
locations where the exhaust gas temperature is above the dew-point
temperature. If the cause of failure to meet the relative accuracy
tests is determined to be the measurement location, relocate the
monitor probe(s).
* * * * *

4. Data Acquisition and Handling Systems

    (a) Automated data acquisition and handling systems shall read
and record the entire range of pollutant concentrations and
volumetric flow from zero through full-scale and provide a
continuous, permanent record of all measurements and required
information in an electronic format. These systems also shall have
the capability of interpreting and converting the individual output
signals from an SO2 pollutant concentration monitor, a
flow monitor, a CO2 monitor, an O2 monitor, a
NOX pollutant concentration monitor, a NOX-
diluent CEMS, and a moisture monitoring system to produce a
continuous readout of pollutant emission

rates or pollutant mass emissions (as applicable) in the appropriate
units (e.g., lb/hr, lb/mmBtu, tons/hr).
    (b) Data acquisition and handling systems shall also compute and
record: Monitor calibration error; any bias adjustments to
SO2, NOX, flow rate, or NOX
emission rate data; and all missing data procedure statistics
specified in subpart D of this part.
    (c) For an excepted monitoring system under appendix D or E of
this part, data acquisition and handling systems shall:
* * * * *
    (6) Provide a continuous, permanent record of all measurements
and required information in an electronic format.
* * * * *

5.1 Reference Gases

* * * * *

5.1.4 EPA Protocol Gases

    (a) An EPA Protocol gas is a calibration gas mixture prepared
and analyzed according to Section 2 of the ``EPA Traceability
Protocol for Assay and Certification of Gaseous Calibration
Standards,'' September 1997, as amended on August 25, 1999, EPA-600/
R-97/121 (incorporated by reference, see Sec.  75.6) or such revised
procedure as approved by the Administrator.
    (b) EPA Protocol gas concentrations must be certified by an EPA
Protocol gas production site to have an analytical uncertainty (95-
percent confidence interval) to be not more than plus or minus 2.0
percent (inclusive) of the certified concentration (tag value) of
the gas mixture. The uncertainty must be calculated using the
statistical procedures (or equivalent statistical techniques) that
are listed in Section 2.1.8 of the ``EPA Traceability Protocol for
Assay and Certification of Gaseous Calibration Standards,''
September 1997, as amended on August 25, 1999, EPA-600/R-97/121
(incorporated by reference, see Sec.  75.6).

5.1.5 Research Gas Mixtures

    Concentrations of research gas mixtures, as defined in Sec.
72.2 of this chapter, must be certified by the National Institute of
Standards and Technology to have an analytical uncertainty (95-
percent confidence interval) calculated using the statistical
procedures (or equivalent statistical techniques) that are listed in
Section 2.1.8 of the ``EPA Traceability Protocol for Assay and
Certification of Gaseous Calibration Standards,'' September 1997, as
amended on August 25, 1999, EPA-600/R-97/121 (incorporated by
reference, see Sec.  75.6) to be not more than plus or minus 2.0
percent (inclusive) of the concentration specified on the cylinder
label (i.e., the tag value) in order to be used as calibration gas
under this part.* * *
* * * * *

6.1 General Requirements

* * * * *

6.1.2 Requirements for Air Emission Testing

    (a) On and after March 27, 2012, all relative accuracy test
audits (RATAs) of CEMS under this part, and stack testing under
Sec.  75.19 and Appendix E to this part shall be conducted by an Air
Emission Testing Body (AETB) which has provided to the owner or
operator of a unit subject to this part the documentation required
in paragraph (b) of this section, demonstrating its conformance to
ASTM D7036-04 (incorporated by reference, see Sec.  75.6).
    (b) The owner or operator shall obtain from the AETB a
certification that as of the time of testing the AETB is operating
in conformance with ASTM D7036-04 (incorporated by reference, see
Sec.  75.6). The AETB's certification may be limited in scope to the
tests identified under paragraph (a). The AETB's certification need
not extend to other work it may perform. This certification shall be
provided in the form of either:
    (1) A certificate of accreditation or interim accreditation for
the relevant test methods issued by a recognized, national
accreditation body; or
    (2) A letter of certification for the relevant test methods
signed by a member of the senior management staff of the AETB.
    (c) The owner or operator shall obtain from the AETB the
information required under Sec. Sec.  75.59(a)(15), (b)(6), and
(d)(4), as applicable.
    (d) While under no obligation to request the following
information from an AETB, to review the information provided by the
AETB in response to such a request, or to take any other action
related to the response, the owner or operator may find it useful to
request that AETBs complying with paragraph (b)(2) of this section
provide a copy of the following:
    (1) The AETB's quality manual. For the purpose of application of
40 CFR part 2, subpart B, AETB's concerned about the potential for
public access to confidential business information (CBI) may
identify any information subject to such a claim in the copy
provided;
    (2) The results of any internal audits performed by the AETB and
any external audits of the AETB during the 12 month period through
the previous calendar quarter;
    (3) Performance data (as defined in ASTM D7036-04 (incorporated
by reference, see Sec.  75.6)) collected by the AETB, including
corrective actions implemented, during the 12 month period through
the previous calendar quarter; and
    (4) Training records for all on-site technical personnel,
including any Qualified Individuals, for the 12 month period through
the previous calendar quarter.
    (e) All relative accuracy testing performed pursuant to Sec.
75.74(c)(2)(ii), section 6.5 of appendix A to this part or section
2.3.1 of appendix B to this part, and stack testing under Sec.
75.19 and Appendix E to this part shall be overseen and supervised
on site by at least one Qualified Individual, as defined in Sec.
72.2 of this chapter with respect to the methods employed in the
test project. If the source owner or operator, or a State, local, or
EPA observer, discovers while the test team is still on site, that
at least one QI did not oversee and supervise the entire test (as
qualified by this paragraph (e)), only those portions of the test
that were overseen and supervised by at least one QI as described
above may be used under this part. However, allowance is made for
normal activities of a QI who is overseeing and supervising a test,
e.g., bathroom breaks, meal breaks, and emergencies that may arise
during a test.
    (f) Except as provided in paragraph (e), no RATA performed
pursuant to Sec.  75.74(c)(2)(ii), section 6.5 of appendix A to this
part or section 2.3.1 of appendix B to this part, and no stack test
under Sec.  75.19 or Appendix E to this part (or portion of such a
RATA or stack test) conducted by an AETB (as defined in Sec.  72.2)
shall be invalidated under this part as a result of the failure of
the AETB to conform to ASTM D7036-04 (incorporated by reference, see
Sec.  75.6). Validation of such tests is determined based on the
other part 75 testing requirements. EPA recommends that proper
observation of tests and review of test results continue, regardless
of whether an AETB fully conforms to ASTM D7036-04.
    (g) An owner or operator who has requested information from an
AETB under paragraph (d) of this part who believes that the
information provided by the AETB was either incomplete or inaccurate
may request the Administrator's assistance in remedying the alleged
deficiencies. Upon such a request, if the Administrator concurs that
the information submitted to a source subject to part 75 by an AETB
under this section is either incomplete or inaccurate, the
Administrator will provide the AETB a description of the
deficiencies to be remedied. The Administrator's determination of
completeness and accuracy of information will be solely based on the
provisions of ASTM D7036-04 (incorporated by reference, see Sec.
75.6) and this part. The Administrator may post the name of the
offending AETB on Agency Web sites (including the CAMD Web site
http://www.epa.gov/airmarkets/emissions/aetb.html) if within 30 days
of the Administrator having provided the AETB a description of the
deficiencies to be remedied, the AETB does not satisfactorily
respond to the source and notify the Administrator of the response
by submitting the notification to<EMAIL_ADDRESS>unless otherwise
provided by the Administrator. The AETB need not submit the
information it provides to the owner or operator to the
Administrator, unless specifically requested by the Administrator.
If after the AETB's name is posted, the Administrator, in
consultation with the source, determines that the AETB's response is
sufficient, the AETB's name will be removed from the EPA Web sites.

6.2 Linearity Check (General Procedures)

    Check the linearity of each SO2, NOX,
CO2, and O2 monitor while the unit, or group
of units for a common stack, is combusting fuel at conditions of
typical stack temperature and pressure; it is not necessary for the
unit to be generating electricity during this test. * * *
* * * * *

6.3 * * *

6.3.1 Gas Monitor 7-Day Calibration Error Test

    The following monitors and ranges are exempted from the 7-day
calibration error test requirements of this part: the
SO2, NOX, CO2 and O2
monitors installed on peaking units (as defined in Sec.  72.2 of
this chapter);

and any SO2 or NOX measurement range with a
span value of 50 ppm or less. In all other cases, measure the
calibration error of each SO2 monitor, each
NOX monitor, and each CO2 or O2
monitor while the unit is combusting fuel (but not necessarily
generating electricity) once each day for 7 consecutive operating
days according to the following procedures. (In the event that unit
outages occur after the commencement of the test, the 7 consecutive
unit operating days need not be 7 consecutive calendar days). Units
using dual span monitors must perform the calibration error test on
both high- and low-scales of the pollutant concentration monitor.
The calibration error test procedures in this section and in section
6.3.2 of this appendix shall also be used to perform the daily
assessments and additional calibration error tests required under
sections 2.1.1 and 2.1.3 of appendix B to this part. Do not make
manual or automatic adjustments to the monitor settings until after
taking measurements at both zero and high concentration levels for
that day during the 7-day test. If automatic adjustments are made
following both injections, conduct the calibration error test such
that the magnitude of the adjustments can be determined and
recorded. Record and report test results for each day using the
unadjusted concentration measured in the calibration error test
prior to making any manual or automatic adjustments (i.e., resetting
the calibration). The calibration error tests should be
approximately 24 hours apart, (unless the 7-day test is performed
over nonconsecutive days). Perform calibration error tests at both
the zero-level concentration and high-level concentration, as
specified in section 5.2 of this appendix. Alternatively, a mid-
level concentration gas (50.0 to 60.0 percent of the span value) may
be used in lieu of the high-level gas, provided that the mid-level
gas is more representative of the actual stack gas concentrations. A
calibration gas blend may be used as both a zero-level gas and an
upscale (mid- or high-level) gas, where appropriate. In addition,
repeat the procedure for SO2 and NOX pollutant
concentration monitors using the low-scale for units equipped with
emission controls or other units with dual span monitors. Use only
calibration gas, as specified in section 5.1 of this appendix.
Introduce the calibration gas at the gas injection port, as
specified in section 2.2.1 of this appendix. Operate each monitor in
its normal sampling mode. For extractive and dilution type monitors,
pass the calibration gas through all filters, scrubbers,
conditioners, and other monitor components used during normal
sampling and through as much of the sampling probe as is practical.
For in-situ type monitors, perform calibration, checking all active
electronic and optical components, including the transmitter,
receiver, and analyzer. Challenge the pollutant concentration
monitors and CO2 or O2 monitors once with each
calibration gas. Record the monitor response from the data
acquisition and handling system. Using Equation A-5 of this
appendix, determine the calibration error at each concentration once
each day (at approximately 24-hour intervals) for 7 consecutive days
according to the procedures given in this section. The results of a
7-day calibration error test are acceptable for monitor or
monitoring system certification, recertification or diagnostic
testing if none of these daily calibration error test results exceed
the applicable performance specifications in section 3.1 of this
appendix. The status of emission data from a gas monitor prior to
and during a 7-day calibration error test period shall be determined
as follows:
* * * * *

6.4 Cycle Time Test

    Perform cycle time tests for each pollutant concentration
monitor and continuous emission monitoring system while the unit is
operating, according to the following procedures. Use a zero-level
and a high-level calibration gas (as defined in section 5.2 of this
appendix) alternately. To determine the downscale cycle time,
measure the concentration of the flue gas emissions until the
response stabilizes. Record the stable emissions value. Inject a
zero-level concentration calibration gas into the probe tip (or
injection port leading to the calibration cell, for in situ systems
with no probe). Record the time of the zero gas injection, using the
data acquisition and handling system (DAHS). Next, allow the monitor
to measure the concentration of the zero gas until the response
stabilizes. Record the stable ending calibration gas reading.
Determine the downscale cycle time as the time it takes for 95.0
percent of the step change to be achieved between the stable stack
emissions value and the stable ending zero gas reading. Then repeat
the procedure, starting with stable stack emissions and injecting
the high-level gas, to determine the upscale cycle time, which is
the time it takes for 95.0 percent of the step change to be achieved
between the stable stack emissions value and the stable ending high-
level gas reading. Use the following criteria to assess when a
stable reading of stack emissions or calibration gas concentration
has been attained. A stable value is equivalent to a reading with a
change of less than 2.0 percent of the span value for 2 minutes, or
a reading with a change of less than 6.0 percent from the measured
average concentration over 6 minutes. Alternatively, the reading is
considered stable if it changes by no more than 0.5 ppm or 0.2%
CO2 or O2 (as applicable) for two minutes.
(Owners or operators of systems which do not record data in 1-minute
or 3-minute intervals may petition the Administrator under Sec.
75.66 for alternative stabilization criteria). For monitors or
monitoring systems that perform a series of operations (such as
purge, sample, and analyze), time the injections of the calibration
gases so they will produce the longest possible cycle time. Refer to
Figures 6a and 6b in this appendix for example calculations of
upscale and downscale cycle times. Report the slower of the two
cycle times (upscale or downscale) as the cycle time for the
analyzer. Prior to January 1, 2009 for the NOX-diluent
continuous emission monitoring system test, either record and report
the longer cycle time of the two component analyzers as the system
cycle time or record the cycle time for each component analyzer
separately (as applicable). On and after January 1, 2009, record the
cycle time for each component analyzer separately. For time-shared
systems, perform the cycle time tests at each probe locations that
will be polled within the same 15-minute period during monitoring
system operations. To determine the cycle time for time-shared
systems, at each monitoring location, report the sum of the cycle
time observed at that monitoring location plus the sum of the time
required for all purge cycles (as determined by the continuous
emission monitoring system manufacturer) at each of the probe
locations of the time-shared systems. For monitors with dual ranges,
report the test results for each range separately. Cycle time test
results are acceptable for monitor or monitoring system
certification, recertification or diagnostic testing if none of the
cycle times exceed 15 minutes. The status of emissions data from a
monitor prior to and during a cycle time test period shall be
determined as follows:
* * * * *

6.5 Relative Accuracy and Bias Tests (General Procedures)

    Perform the required relative accuracy test audits (RATAs) as
follows for each CO2 emissions concentration monitor
(including O2 monitors used to determine CO2
emissions concentration), each SO2 pollutant
concentration monitor, each NOX concentration monitoring
system used to determine NOX mass emissions, each flow
monitor, each NOX-diluent CEMS, each O2 or
CO2 diluent monitor used to calculate heat input, and
each moisture monitoring system. For NOX concentration
monitoring systems used to determine NOX mass emissions,
as defined in Sec.  75.71(a)(2), use the same general RATA
procedures as for SO2 pollutant concentration monitors;
however, use the reference methods for NOX concentration
specified in section 6.5.10 of this appendix:
* * * * *
    (c) For monitoring systems with dual ranges, perform the
relative accuracy test on the range normally used for measuring
emissions. For units with add-on SO2 or NOX
controls that operate continuously rather than seasonally, or for
units that need a dual range to record high concentration ``spikes''
during startup conditions, the low range is considered normal.
However, for some dual span units (e.g., for units that use fuel
switching or for which the emission controls are operated
seasonally), provided that both monitor ranges are connected to a
common probe and sample interface, either of the two measurement
ranges may be considered normal; in such cases, perform the RATA on
the range that is in use at the time of the scheduled test. If the
low and high measurement ranges are connected to separate sample
probes and interfaces, RATA testing on both ranges is required.
* * * * *
    (e) Complete each single-load relative accuracy test audit
within a period of 168 consecutive unit operating hours, as defined
in Sec.  72.2 of this chapter (or, for CEMS installed on common
stacks or bypass stacks, 168 consecutive stack operating hours, as

defined in Sec.  72.2 of this chapter). For 2-level and 3-level flow
monitor RATAs, complete all of the RATAs at all levels, to the
extent practicable, within a period of 168 consecutive unit (or
stack) operating hours; however, if this is not possible, up to 720
consecutive unit (or stack) operating hours may be taken to complete
a multiple-load flow RATA.
* * * * *
    (g) For each SO2 or CO2 emissions
concentration monitor, each flow monitor, each CO2 or
O2 diluent monitor used to determine heat input, each
NOX concentration monitoring system used to determine
NOX mass emissions, as defined in Sec.  75.71(a)(2), each
moisture monitoring system, and each NOX-diluent CEMS,
calculate the relative accuracy, in accordance with section 7.3 or
7.4 of this appendix, as applicable. In addition (except for
CO2, O2, or moisture monitors), test for bias
and determine the appropriate bias adjustment factor, in accordance
with sections 7.6.4 and 7.6.5 of this appendix, using the data from
the relative accuracy test audits.

6.5.1 Gas Monitoring System RATAs (Special Considerations)

    (a) Perform the required relative accuracy test audits for each
SO2 or CO2 emissions concentration monitor,
each CO2 or O2 diluent monitor used to
determine heat input, each NOX-diluent CEMS, and each
NOX concentration monitoring system used to determine
NOX mass emissions, as defined in Sec.  75.71(a)(2), at
the normal load level or normal operating level for the unit (or
combined units, if common stack), as defined in section <IP_ADDRESS> of
this appendix. If two load levels or operating levels have been
designated as normal, the RATAs may be done at either load (or
operating) level.
    (b) For the initial certification of a gas monitoring system and
for recertifications in which, in addition to a RATA, one or more
other tests are required (i.e., a linearity test, cycle time test,
or 7-day calibration error test), EPA recommends that the RATA not
be commenced until the other required tests of the CEMS have been
passed.
* * * * *

6.5.7 Sampling Strategy

    (a) Conduct the reference method tests allowed in section 6.5.10
of this appendix so they will yield results representative of the
pollutant concentration, emission rate, moisture, temperature, and
flue gas flow rate from the unit and can be correlated with the
pollutant concentration monitor, CO2 or O2
monitor, flow monitor, and SO2 or NOX CEMS
measurements. The minimum acceptable time for a gas monitoring
system RATA run or for a moisture monitoring system RATA run is 21
minutes. For each run of a gas monitoring system RATA, all necessary
pollutant concentration measurements, diluent concentration
measurements, and moisture measurements (if applicable) must, to the
extent practicable, be made within a 60-minute period. For
NOX-diluent monitoring system RATAs, the pollutant and
diluent concentration measurements must be made simultaneously. For
flow monitor RATAs, the minimum time per run shall be 5 minutes.
Flow rate reference method measurements allowed in section 6.5.10 of
this appendix may be made either sequentially from port-to-port or
simultaneously at two or more sample ports. The velocity measurement
probe may be moved from traverse point to traverse point either
manually or automatically. If, during a flow RATA, significant
pulsations in the reference method readings are observed, be sure to
allow enough measurement time at each traverse point to obtain an
accurate average reading when a manual readout method is used (e.g.,
a ``sight-weighted'' average from a manometer). Also, allow
sufficient measurement time to ensure that stable temperature
readings are obtained at each traverse point, particularly at the
first measurement point at each sample port, when a probe is moved
sequentially from port-to-port. A minimum of one set of auxiliary
measurements for stack gas molecular weight determination (i.e.,
diluent gas data and moisture data) is required for every clock hour
of a flow RATA or for every three test runs (whichever is less
restrictive). Alternatively, moisture measurements for molecular
weight determination may be performed before and after a series of
flow RATA runs at a particular load level (low, mid, or high),
provided that the time interval between the two moisture
measurements does not exceed three hours. If this option is
selected, the results of the two moisture determinations shall be
averaged arithmetically and applied to all RATA runs in the series.
Successive flow RATA runs may be performed without waiting in
between runs. If an O2 diluent monitor is used as a
CO2 continuous emission monitoring system, perform a
CO2 system RATA (i.e., measure CO2, rather
than O2, with the applicable reference method allowed in
section 6.5.10 of this appendix). For moisture monitoring systems,
an appropriate coefficient, ``K'' factor or other suitable
mathematical algorithm may be developed prior to the RATA, to adjust
the monitoring system readings with respect to the applicable
reference method allowed in section 6.5.10 of this appendix. If such
a coefficient, K-factor or algorithm is developed, it shall be
applied to the CEMS readings during the RATA and (if the RATA is
passed), to the subsequent CEMS data, by means of the automated data
acquisition and handling system. The owner or operator shall keep
records of the current coefficient, K factor or algorithm, as
specified in Sec.  75.59(a)(5)(vii). Whenever the coefficient, K
factor or algorithm is changed, a RATA of the moisture monitoring
system is required.
    (b) To properly correlate individual SO2 or
NOX CEMS data (in lb/mmBtu) and volumetric flow rate data
with the applicable reference method data, annotate the beginning
and end of each reference method test run (including the exact time
of day) on the individual chart recorder(s) or other permanent
recording device(s).
* * * * *

6.5.10 Reference Methods

    The following methods are from appendix A to part 60 of this
chapter, and are the reference methods for performing relative
accuracy test audits under this part: Method 1 or 1A in appendix A-1
to part 60 of this chapter for siting; Method 2 in appendix A-1 to
part 60 of this chapter or its allowable alternatives in appendices
A-1 and A-2 to part 60 of this chapter (except for Methods 2B and 2E
in appendix A-1 to part 60 of this chapter) for stack gas velocity
and volumetric flow rate; Methods 3, 3A or 3B in appendix A-2 to
part 60 of this chapter for O2 and CO2; Method
4 in appendix A-3 to part 60 of this chapter for moisture; Methods
6, 6A or 6C in appendix A-4 to part 60 of this chapter for
SO2; and Methods 7, 7A, 7C, 7D or 7E in appendix A-4 to
part 60 of this chapter for NOX, excluding the exceptions
to Method 7E identified in Sec.  75.22(a)(5). When using Method 7E
for measuring NOX concentration, total NOX,
including both NO and NO2, must be measured. When using
EPA Protocol gas with Methods 3A, 6C, and 7E, the gas must be from
an EPA Protocol gas production site that is participating in the EPA
Protocol Gas Verification Program, pursuant to Sec.  75.21(g)(6). An
EPA Protocol gas cylinder certified by or ordered from a non-
participating production site no later than May 27, 2011 may be used
for the purposes of this part until the earlier of the cylinder's
expiration date or the date on which the cylinder gas pressure
reaches 150 psig; however, in no case shall the cylinder be
recertified by a non-participating EPA Protocol gas production site
to extend its useful life and be used by a source subject to this
part. In the event that an EPA Protocol gas production site is
removed from the list of PGVP participants on the same date as or
after the date on which a particular cylinder is certified or
ordered, that gas cylinder may continue to be used for the purposes
of this part until the earlier of the cylinder's expiration date or
the date on which the cylinder gas pressure reaches 150 psig;
however, in no case shall the cylinder be recertified by a non-
participating EPA Protocol gas production site to extend its useful
life and be used by a source subject to this part.
* * * * *

7.3 Relative Accuracy for SO2 and CO2
Emissions Concentration Monitors, O2 Monitors,
NOX Concentration Monitoring Systems, and Flow Monitors

    Analyze the relative accuracy test audit data from the reference
method tests for SO2 and CO2 emissions
concentration monitors, CO2 or O2 monitors
used for heat input rate determination, NOX concentration
monitoring systems used to determine NOX mass emissions
under subpart H of this part, and flow monitors using the following
procedures. Summarize the results on a data sheet. An example is
shown in Figure 2. Calculate the mean of the monitor or monitoring
system measurement values. Calculate the mean of the reference
method values. Using data from the automated data acquisition and
handling system, calculate the arithmetic differences between the
reference method and monitor measurement data sets. Then calculate
the arithmetic mean of the difference, the standard deviation, the
confidence coefficient, and the monitor or monitoring system
relative accuracy using the following procedures and equations.

7.3.1 Arithmetic Mean

    Calculate the arithmetic mean of the differences of a data set
as follows:
[GRAPHIC] [TIFF OMITTED] TR28MR11.000

* * * * *

7.6 Bias Test and Adjustment Factor

    Test the following relative accuracy test audit data sets for
bias: SO2 pollutant concentration monitors; flow
monitors; NOX concentration monitoring systems used to
determine NOX mass emissions, as defined in 75.71(a)(2);
and NOX-diluent CEMS using the procedures outlined in
sections 7.6.1 through 7.6.5 of this appendix. For multiple-load
flow RATAs, perform a bias test at each load level designated as
normal under section <IP_ADDRESS> of this appendix.

7.6.1 Arithmetic Mean

    Calculate the arithmetic mean of the differences of the data set
using Equation A-7 of this appendix. To calculate bias for an
SO2 or NOX pollutant concentration monitor,
``di'' is, for each paired data point, the difference
between the SO2 or NOX concentration value (in
ppm) obtained from the reference method and the monitor. To
calculate bias for a flow monitor, ``di'' is, for each
paired data point, the difference between the flow rate values (in
scfh) obtained from the reference method and the monitor. To
calculate bias for a NOX-diluent continuous emission
monitoring system, ``di'' is, for each paired data point,
the difference between the NOX emission rate values (in
lb/mmBtu) obtained from the reference method and the monitoring
system.
* * * * *

7.6.5 * * *

    (b) For single-load RATAs of SO2 pollutant
concentration monitors, NOX concentration monitoring
systems, and NOX-diluent monitoring systems, and for the
single-load flow RATAs required or allowed under section 6.5.2 of
this appendix and sections <IP_ADDRESS>(b) and <IP_ADDRESS>(c) of appendix B
to this part, the appropriate BAF is determined directly from the
RATA results at normal load, using Equation A-12. Notwithstanding,
when a NOX concentration CEMS or an SO2 CEMS
or a NOX-diluent CEMS installed on a low-emitting
affected unit (i.e., average SO2 or NOX
concentration during the RATA <= 250 ppm or average NOX
emission rate <= 0.200 lb/mmBtu) meets the normal 10.0 percent
relative accuracy specification (as calculated using Equation A-10)
or the alternate relative accuracy specification in section 3.3 of
this appendix for low-emitters, but fails the bias test, the BAF may
either be determined using Equation A-12, or a default BAF of 1.111
may be used.
* * * * *
    (f) Use the bias-adjusted values in computing substitution
values in the missing data procedure, as specified in subpart D of
this part, and in reporting the concentration of SO2, the
flow rate, the average NOX emission rate, the unit heat
input, and the calculated mass emissions of SO2 and
CO2 during the quarter and calendar year, as specified in
subpart G of this part. In addition, when using a NOX
concentration monitoring system and a flow monitor to calculate
NOX mass emissions under subpart H of this part, use
bias-adjusted values for NOX concentration and flow rate
in the mass emission calculations and use bias-adjusted
NOX concentrations to compute the appropriate
substitution values for NOX concentration in the missing
data routines under subpart D of this part.
* * * * *

0
31. Appendix B to part 75 is amended by:
0
a. Revising section 1.1.4;
0
b. Removing sections 1.5 and 1.5.1 through 1.5.6;
0
c. Revising paragraph (a) of section 2.1.4;
0
d. Adding paragraph (c) to section 2.1.4;
0
e. Revising section 2.2.1;
0
f. Adding paragraph (i) to section 2.2.3;
0
g. Revising paragraph (a) of section <IP_ADDRESS>, paragraph (a) of section
<IP_ADDRESS>, and paragraphs (d) and (i) of section 2.3.2;
0
h. Adding paragraph (k) to section 2.3.2;
0
i. Revising section 2.3.4;
0
j. Removing section 2.6;
0
k. Revising Figures 1 and 2; and
0
e. Adding Figure 3, to read as follows:

Appendix B to Part 75--Quality Assurance and Quality Control Procedures

1. Quality Assurance/Quality Control Program

* * * * *
    1.1.4 The provisions in section 6.1.2 of appendix A to this part
shall apply to the annual RATAs described in Sec.  75.74(c)(2)(ii)
and to the semiannual and annual RATAs described in section 2.3 of
this appendix.
* * * * *

2. Frequency of Testing

* * * * *

2.1.4 Data Validation

    (a) An out-of-control period occurs when the calibration error
of an SO2 or NOX pollutant concentration
monitor exceeds 5.0 percent of the span value, when the calibration
error of a CO2 or O2 monitor (including
O2 monitors used to measure CO2 emissions or
percent moisture) exceeds 1.0 percent O2 or
CO2, or when the calibration error of a flow monitor
exceeds 6.0 percent of the span value, which is twice the applicable
specification of appendix A to this part. Notwithstanding, a
differential pressure-type flow monitor for which the calibration
error exceeds 6.0 percent of the span value shall not be considered
out-of-control if [verbar]R-A[verbar], the absolute value of the
difference between the monitor response and the reference value in
Equation A-6 of appendix A to this part, is < 0.02 inches of water.
In addition, an SO2 or NOX monitor for which
the calibration error exceeds 5.0 percent of the span value shall
not be considered out-of-control if [verbar]R-A[verbar] in Equation
A-6 does not exceed 5.0 ppm (for span values <= 50 ppm), or if
[verbar]R-A[verbar]; does not exceed 10.0 ppm (for span values > 50
ppm, but <= 200 ppm). The out-of-control period begins upon failure
of the calibration error test and ends upon completion of a
successful calibration error test. Note, that if a failed
calibration, corrective action, and successful calibration error
test occur within the same hour, emission data for that hour
recorded by the monitor after the successful calibration error test
may be used for reporting purposes, provided that two or more valid
readings are obtained as required by Sec.  75.10. A NOX-
diluent CEMS is considered out-of-control if the calibration error
of either component monitor exceeds twice the applicable performance
specification in appendix A to this part. Emission data shall not be
reported from an out-of-control monitor.
* * * * *
    (c) The results of any certification, recertification,
diagnostic, or quality assurance test required under this part may
not be used to validate the emissions data required under this part,
if the test is performed using EPA Protocol gas from a production
site that is not participating in the PGVP, except as provided in
Sec.  75.21(g)(7) or if the cylinder(s) are analyzed by an
independent laboratory and shown to meet the requirements of section
5.1.4(b) of appendix A to this part.
* * * * *

2.2.1 Linearity Check

    Unless a particular monitor (or monitoring range) is exempted
under this paragraph or under section 6.2 of appendix A to this
part, perform a linearity check, in accordance with the procedures
in section 6.2 of appendix A to this part, for each primary and
redundant backup SO2, and NOx pollutant concentration
monitor and each primary and redundant backup CO2 or
O2 monitor (including O2 monitors used to
measure CO2 emissions or to continuously monitor
moisture) at least once during each QA operating quarter, as defined
in Sec.  72.2 of this chapter. For units using both a low and high
span value, a linearity check is required only on the range(s) used
to record and report emission data during the QA operating quarter.
Conduct the linearity checks no less than 30 days apart, to the
extent practicable. The data validation procedures in section
2.2.3(e) of this appendix shall be followed.
* * * * *

2.2.3 Data Validation

* * * * *
    (i) The results of any certification, recertification,
diagnostic, or quality assurance test required under this part may
not be used to validate the emissions data required under this part,
if the test is performed using EPA Protocol gas that was not from an
EPA Protocol gas production site participating in the PGVP on the
date the gas was procured either by the tester or by a reseller that
sold to the tester the unaltered EPA Protocol gas, except as
provided in Sec.  75.21(g)(7) or if the cylinder(s) are analyzed by
an independent laboratory and shown to meet the requirements of
section 5.1.4(b) of appendix A to this part.
* * * * *

<IP_ADDRESS> Standard RATA Frequencies

    (a) Except as otherwise specified in Sec.  75.21(a)(6) or (a)(7)