substitute the maximum potential moisture percentage, as specified in
section 2.1.6 of appendix A to this part.
* * * * *
    14. 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. * * *
* * * * *
    15. Section 75.33 is amended by:
    a. Revising the section heading; and
    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**,   HB/HA.
                                                            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**,   HB/HA.
                                                            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**,   720 hours*.
                                                            Maximum value\1\.
                                                           For O2 and H2O\x\:         720 hours*.
                                                            Minimum value\1\.
Below 80..........................  N > 0................  Maximum potential          None
                                                            concentration\3\ or %
                                                            (for SO2, CO2, and
                                                            H2O**) or
                                                           Minimum potential
                                                            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.

* * * * *
    16. Section 75.34 is amended by:
    a. Revising paragraph (a)(2)(ii); and
    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]

    17. Sections 75.38 and 75.39 are removed and reserved.
    18. Section 75.47 is amended by:
    a. Revising paragraph (b)(2); and
    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.
    19. Section 75.53 is amended by:
    a. Revising paragraphs (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);
    b. Adding paragraph (g)(1)(vi)(J); and
    c. Revising paragraphs (h)(2)(i) and (h)(5), to read as follows:

Sec.  75.53  Monitoring plan.

* * * * *
    (g) * * *
    (1) * * *
    (i) * * *
    (A) A representation of the exhaust configuration for the units in
the monitoring plan. On and after [EFFECTIVE DATE OF FINAL RULE],
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 [EFFECTIVE DATE OF FINAL RULE], 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
[EFFECTIVE DATE OF FINAL RULE], 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 [EFFECTIVE DATE OF FINAL RULE],
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 [EFFECTIVE DATE OF FINAL RULE],
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 [EFFECTIVE DATE OF FINAL RULE], 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 [EFFECTIVE DATE OF FINAL RULE], 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 [EFFECTIVE DATE OF FINAL RULE], provide the activation date and
deactivation date (if applicable) for the gas-fired unit qualification
information in this paragraph (h)(5).
* * * * *
    20. Section 75.57 is amended by:
    a. Revising paragraph (a)(5);
    b. Revising paragraph (a)(6);
    c. Adding paragraph (a)(7);
    d. Revising Table 4a; and
    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 estimation
         Code                                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, Hg 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.
------------------------------------------------------------------------

* * * * *
    21. Section 75.58 is amended by:
    a. Revising paragraphs (b)(3) and (d)(4)(ii); and
    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 [EFFECTIVE DATE OF FINAL RULE], 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.
* * * * *
    22. Section 75.59 is amended by:
    a. Revising paragraph (a)(1) introductory text;
    b. Revising paragraph (a)(1)(iii);
    c. Revising paragraphs (a)(3) introductory text, (a)(5)
introductory text, and (a)(5)(ii) introductory text;
    d. Revising paragraph (a)(5)(ii)(L);
    e. Revising paragraphs (a)(5)(iii)(F) and (G);
    f. Adding paragraph (a)(5)(iii)(H);
    g. Revising paragraph (a)(6) introductory text;
    h. Removing and reserving paragraph (a)(7)(vii);
    i. Removing the title of reserved paragraph (a)(7)(viii);
    j. Removing paragraph (a)(7)(x);
    k. Revising paragraph (a)(9) introductory text;
    l. Revising paragraph (a)(9)(vi);
    m. Adding paragraphs (a)(9)(x) and (xi);
    n. Revising paragraphs (a)(12)(iv)(E) and (F);
    o. Adding paragraph (a)(12)(iv)(G);
    p. Removing and reserving paragraph (a)(14);
    q. Adding paragraph (a)(15);
    r. Adding paragraph (b)(6);
    s. Revising paragraph (c) introductory text;
    t. Revising paragraphs (d)(3)(x) and (xi);
    u. Adding paragraphs (d)(3)(xii) and (xiii);
    v. Adding paragraph (d)(4);
    w. Removing paragraph (e); and
    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 [EFFECTIVE DATE OF FINAL RULE], 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 [EFFECTIVE DATE OF FINAL

RULE], 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 [EFFECTIVE DATE OF FINAL RULE], 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 [DATE THAT IS SIX MONTHS FROM THE EFFECTIVE DATE
OF FINAL RULE], 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) Start date and hour for EPA Protocol gas type code;
    (4) End date and hour (if applicable) for EPA Protocol gas type
code;
    (5) The PGVP vendor ID issued by EPA for the EPA Protocol gas
production site that supplied the gas cylinder.
    (6) Start date and hour for PGVP vendor ID; and
    (7) End date and hour (if applicable) for PGVP vendor ID.
    (B) On and after [DATE THAT IS SIX MONTHS FROM THE EFFECTIVE DATE
OF FINAL RULE], 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), (2), and
(5) of this section.
    (xi) On and after [DATE THAT IS SIX MONTHS FROM THE EFFECTIVE DATE
OF FINAL RULE], 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 the on-site Qualified Individual, as defined in
Sec.  72.2 of this chapter;
    (C) For the reference method(s) that were performed, the date that
the on-site Qualified Individual took and passed the relevant
qualification exam(s) required by ASTM D 7036-04; and
    (D) The name and e-mail address of the qualification exam provider.
* * * * *
    (12) * * *
    (iv) * * *
    (E) Type of extension;
    (F) Quarter and year; and
    (G) On and after [EFFECTIVE DATE OF FINAL RULE], fuel code for
Ozone Season Only reporters under Sec.  75.74(c).
* * * * *
    (14) [Reserved]
    (15) On and after [DATE THAT IS SIX MONTHS FROM THE EFFECTIVE DATE
OF FINAL RULE], 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 the on-site Qualified Individual, as defined in
Sec.  72.2 of this chapter;
    (iii) For the reference method(s) that were performed, the date
that the on-site Qualified Individual took and passed the relevant
qualification exam(s) required by ASTM D 7036-04; and
    (iv) The name and e-mail address of the qualification exam
provider.
    (b) * * *
    (6) On and after [DATE THAT IS SIX MONTHS FROM THE EFFECTIVE DATE
OF FINAL RULE], 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 the on-site Qualified Individual, as defined in
Sec.  72.2 of this chapter;
    (iii) For the reference method(s) that were performed, the date
that the on-site Qualified Individual took and passed the relevant
qualification exam(s) required by ASTM D 7036-04; and
    (iv) The name and e-mail address of the 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 [EFFECTIVE DATE OF FINAL RULE], the number of
tests for group; and
    (xiii) On and after [EFFECTIVE DATE OF FINAL RULE], the number of
units in group.
    (4) On and after [DATE THAT IS SIX MONTHS FROM THE EFFECTIVE DATE
OF FINAL RULE], 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 the on-site Qualified Individual, as defined in
Sec.  72.2 of this chapter;
    (iii) For the reference method(s) that were performed, the date
that the on-site Qualified Individual took and passed the relevant
qualification exam(s) required by ASTM D 7036-04; and
    (iv) The name and e-mail address of the qualification exam
provider.

Sec.  75.60  [Amended]

    23. Section 75.60 is amended by removing paragraph (b)(8).
    24. Section 75.61 is amended by:
    a. Revising paragraph (a)(1) introductory text;
    b. Revising the first sentence of paragraph (a)(5) introductory
text; and
    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.
* * * * *
    25. Section 75.62 is amended by adding paragraph (d) to read as
follows:

Sec.  75.62  Monitoring plan submittals.

* * * * *
    (d) On and after [EFFECTIVE DATE OF FINAL RULE], consistent with
Sec.  72.21 of this chapter, a hardcopy cover letter signed by the
Designated Representative (DR) or the Alternate Designated
Representative (ADR) 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 or ADR 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.
    26. 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) or the Alternate
Designated Representative (ADR) 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 or
ADR 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.
    27. Section 75.64 is amended by:
    a. Revising paragraph (a)(5);
    b. Revising paragraph (a)(7)(xi);
    c. Revising paragraph (a)(7)(xii)(D);
    d. Adding paragraph (a)(7)(xiii); and
    e. Redesignating paragraph (a)(127) as paragraph (a)(12), to read
as follows:

Sec.  75.64  Quarterly reports.

    (a) * * *
    (5) Except for the daily calibration error test data, daily
interference check, and off-line calibration demonstration information
required in Sec.  75.59(a)(1) and (2), which must always be submitted
with the quarterly report, the certification, quality assurance, and
quality control information required in Sec.  75.59 shall either be
submitted prior to or concurrent with the submittal of the relevant
quarterly electronic data report. On and after January 1, 2011, the
information required in Sec.  75.59(a)(9)(x), (a)(15), (b)(6), and
(d)(4) shall either be submitted prior to or concurrent with the
submittal of the relevant quarterly electronic data report.
* * * * *
    (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).
* * * * *

Subpart I [Removed]

    28. Subpart I, consisting of Sec. Sec.  75.80 through 75.84 is
removed.
    29. Appendix A to Part 75 is amended by:

    a. Revising section 1.1;
    b. Removing sections 2.1.7, <IP_ADDRESS> through <IP_ADDRESS>, and 2.2.3;
    c. Removing paragraph (c) of section 3.1 and paragraph (3) of
section 3.2;
    d. Removing sections 3.3.8 and 3.4.3;
    e. Revising the introductory text of section 4;
    f. Revising paragraph (6) of section 4;
    g. Revising paragraph (b) of Section 5.1.4;
    h. Removing paragraph (c) of Section 5.1.4;
    i. In section 5.1.4 by redesignating paragraph (d) as paragraph (c)
and by revising newly designated paragraph (c);
    j. Revising the first sentence in Section 5.1.5;
    k. Removing section 5.1.9;
    l. Revising section 6.1.2;
    m. Revising the first sentence of section 6.2 introductory text;
    n. Removing paragraphs (g) and (h) of section 6.2;
    o. Revising the introductory text of section 6.3.1;
    p. Revising the introductory text of sections 6.4 and 6.5;
    q. Revising paragraphs (c), (e), and (g) of section 6.5;
    r. Revising section 6.5.1;
    s. Removing paragraph (c) of section 6.5.6;
    t. Revising paragraphs (a) and (b) of section 6.5.7;
    u. Revising section 6.5.10;
    v. Revising the introductory text of section 7.3;
    w. Revising section 7.3.1;
    x. Revising the introductory text of section 7.6;
    y. Revising section 7.6.1; and
    z. 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

* * * * *
    (b) EPA Protocol gas concentrations must be certified by a
specialty gas company to have an analytical uncertainty to be not
more than plus or minus 2.0 percent (inclusive).
    (c) A copy of EPA-600/R-97/121 is available from the National
Technical Information Service, 5285 Port Royal Road, Springfield,
VA,<PHONE_NUMBER> or http://www.ntis.gov, and from http://
www.epa.gov/ttn/emc/news.html.

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 be within 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 [DATE THAT IS SIX MONTHS FROM THE EFFECTIVE
DATE OF FINAL RULE], all relative accuracy test audits (RATAs) of
CEMS under this part, and stack testing in 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 an affected
unit the documentation required in paragraph (b) of this section,
demonstrating its conformance to ASTM D7036-04 (incorporated by
reference under Sec.  75.6 of this part).
    (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. 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 paragraphs 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, it is recommended that the owner or
operator request that the AETB produce the following:
    (1) The AETB's quality manual;
    (2) The results of any external or internal audits performed by
the AETB during the prior 12 months;
    (3) A written description of any corrective actions being
implemented by the AETB during the prior 12 months; and
    (4) Any AETB training records for the prior 12 months.
    (e) All relative accuracy testing and stack testing in Sec.
75.19 and Appendix E to this part shall be conducted or overseen 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. When a QI oversees a test, the QI shall actively observe
the test for its duration. If a QI conducts a test, the QI shall
actively conduct the test for its duration. However, allowance is
made for normal activities of a QI who is overseeing or conducting a
test, e.g., bathroom breaks, food breaks, and emergencies that may
arise during a test. If the source owner or operator, or a state,
local, or EPA observer, discovers during the test period, that the
QI did not conduct or oversee the entire test (as qualified by this
paragraph (d)), only those portions of the test that were conducted
or overseen by the QI as described above may be used under this
part.
    (f) The certification described in paragraph (b) of this
section, and compliance with paragraph (e) of this section, shall be
sufficient proof of validity of test data that otherwise meet the
requirements of this part.
    (g) If the Administrator finds that the information submitted to
an affected source by an AETB under this section or the information
requested by an affected source under this section is either
incomplete or inaccurate, the Administrator may post the name of the
offending AETB on Agency Web sites, and provide the AETB a
description of the failures to be remedied. The AETB name will be
removed from the EPA Web sites once the failures are remedied.

    (h) If the Administrator finds that the information submitted to
an affected source by an AETB under this section or the information
requested by an affected source under this section is either
incomplete or inaccurate, the AETB shall, on demand of the
Administrator, provide to the Administrator evidence within a
reasonable time of the demand that any missing information has been
provided to the affected source and/or that any inaccurate
information has been corrected.

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.
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 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 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 reference method). 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
reference method. 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 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 described in Sec.  75.21(g).
However, EPA Protocol gas cylinders purchased prior to [EFFECTIVE
DATE OF FINAL RULE] from a production site that is not participating
in the PGVP 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 after such gases are procured, but before the gases
have been consumed, the gas cylinders 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.
* * * * *

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] TP11JN10.000

Where:

davg = Arithmetic mean of the differences
n = Number of data points (test runs)
[GRAPHIC] [TIFF OMITTED] TP11JN10.001

di = The difference between a reference method value and
the corresponding continuous emission monitoring system value
(RMi - CEMi), for a given data point
* * * * *

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.
* * * * *
    30. Appendix B to Part 75 is amended by:
    a. Revising section 1.1.4;
    b. Removing sections 1.5 and 1.5.1 through 1.5.6;
    c. Revising paragraph (a) of section 2.1.4;
    d. Adding paragraph (c) to section 2.1.4;
    e. Revising section 2.2.1;
    f. Adding paragraph (i) to section 2.2.3;
    g. Revising paragraph (a) of section <IP_ADDRESS>, paragraph (a) of
section <IP_ADDRESS>, and paragraphs (d) and (i) of section 2.3.2;
    h. Adding paragraph (k) to section 2.3.2;
    i. Revising section 2.3.4;
    j. Removing section 2.6;
    k. Revising Figures 1 and 2; and
    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 [bond]R- A[bond], 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 [bond]R- A[bond] in Equation A-6
does not exceed 5.0 ppm (for span values <= 50 ppm), or if [bond]R-
A[bond] 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)(6) and (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 from a production
site that is not participating in the PGVP, except as provided in
Sec.  75.21(g)(6) and (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)
or in section <IP_ADDRESS> of this appendix, perform relative accuracy
test audits semiannually, i.e., once every two successive QA
operating quarters (as defined in Sec.  72.2 of this chapter) for
each primary and redundant backup SO2 pollutant
concentration monitor, flow monitor, CO2 emissions
concentration monitor (including O2 monitors used to
determine CO2 emissions), CO2 or O2
diluent monitor used to determine heat input, moisture monitoring
system, NOX concentration monitoring system, or
NOX-diluent CEMS. A calendar quarter that does not
qualify as a QA operating quarter shall be excluded in determining
the deadline for the next RATA. No more than eight successive
calendar quarters shall elapse after the quarter in which a RATA was
last performed without a subsequent RATA having been conducted. If a
RATA has not been completed by the end of the eighth calendar
quarter since the quarter of the last RATA, then the RATA must be
completed within a 720 unit (or stack) operating hour grace period
(as provided in section 2.3.3 of this appendix) following the end of
the eighth successive elapsed calendar quarter, or data from the
CEMS will become invalid.
* * * * *

<IP_ADDRESS> RATA Load (or Operating) Levels and Additional RATA
Requirements

    (a) For SO2 pollutant concentration monitors,
CO2 emissions concentration monitors (including
O2 monitors used to determine CO2 emissions),
CO2 or O2 diluent monitors used to determine
heat input, NOX concentration monitoring systems, and
NOX-diluent monitoring systems, the required semiannual
or annual RATA tests shall be done at the load level (or operating
level) designated as normal under section <IP_ADDRESS>(d) of appendix A
to this part. If two load levels (or operating levels) are
designated as normal, the required RATA(s) may be done at either
load level (or operating level).
* * * * *

2.3.2 Data Validation

* * * * *
    (d) For single-load (or single-level) RATAs, if a daily
calibration error test is failed during a RATA test period, prior to
completing the test, the RATA must be repeated. Data from the
monitor are invalidated prospectively from the hour of the failed
calibration error test until the hour of completion of a subsequent
successful calibration error test. The subsequent RATA shall not be
commenced until the monitor has successfully passed a calibration
error test in accordance with section 2.1.3 of this appendix. For
multiple-load (or multiple-level) flow RATAs, each load level (or
operating level) is treated as a separate RATA (i.e., when a
calibration error test is failed prior to completing the RATA at a
particular load level (or operating level), only the RATA at that
load level (or operating level) must be repeated; the results of any
previously-passed RATA(s) at the other load level(s) (or operating
level(s)) are unaffected, unless the monitor's polynomial
coefficients or K-factor(s) must be changed to correct the problem
that caused the calibration failure, in which case a subsequent 3-
load (or 3-level) RATA is required), except as otherwise provided in
section <IP_ADDRESS> (c)(5) of this appendix.
* * * * *
    (i) Each time that a hands-off RATA of an SO2
pollutant concentration monitor, a NOX-diluent monitoring
system, a NOX concentration monitoring system, or a flow
monitor is passed, perform a bias test in accordance with section
7.6.4 of appendix A to this part. Apply the appropriate bias
adjustment factor to the reported SO2, NOX, or
flow rate data, in accordance with section 7.6.5 of appendix A to
this part.
* * * * *
    (k) 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)(6) and (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.
* * * * *

2.3.4 Bias Adjustment Factor

    Except as otherwise specified in section 7.6.5 of appendix A to
this part, if an SO2 pollutant concentration monitor, a
flow monitor, a NOX-diluent CEMS, or a NOX
concentration monitoring system used to calculate NOX
mass emissions fails the bias test specified in section 7.6 of
appendix A to this part, use the bias adjustment factor given in
Equations A-11 and A-12 of appendix A to this part or the allowable
alternative BAF specified in section 7.6.5(b) of appendix A of this
part, to adjust the monitored data.
* * * * *

                     Figure 1 to Appendix B of Part 75--Quality Assurance Test Requirements
----------------------------------------------------------------------------------------------------------------
                                                                      Basic QA test frequency requirements
                                                              --------------------------------------------------
                             Test                                                                 Semiannual or
                                                                   Daily *        Quarterly *         annual
----------------------------------------------------------------------------------------------------------------
Calibration Error Test (2 pt.)...............................               X   ...............  ...............
Interference Check (flow)....................................               X   ...............  ...............
Flow-to-Load Ratio...........................................  ...............               X   ...............
Leak Check (DP flow monitors)................................  ...............               X   ...............
Linearity Check* (3 pt.).....................................  ...............               X   ...............
RATA (SO2, NOX, CO2, O2, H2O)\1\.............................  ...............  ...............               X
RATA (flow) 1, 2.............................................  ...............  ...............               X
----------------------------------------------------------------------------------------------------------------
* ``Daily'' means operating days, only. ``Quarterly'' means once every QA operating quarter. ``Semiannual''
  means once every two QA operating quarters. ``Annual'' means once every four QA operating quarters.
\1\ Conduct RATA annually (i.e., once every four QA operating quarters) rather than semiannually, if monitor
  meets accuracy requirements to qualify for less frequent testing.

\2\ For flow monitors installed on peaking units, bypass stacks, or units that qualify for single-level RATA
  testing under section 6.5.2(e) of this part, conduct all RATAs at a single, normal load (or operating level).
  For other flow monitors, conduct annual RATAs at two load levels (or operating levels). Alternating single-
  load and 2-load (or single-level and 2-level) RATAs may be done if a monitor is on a semiannual frequency. A
  single-load (or single-level) RATA may be done in lieu of a 2-load (or 2-level) RATA if, since the last annual
  flow RATA, the unit has operated at one load level (or operating level) for >= 85.0 percent of the time. A 3-
  level RATA is required at least once every five years (20 calendar quarters) and whenever a flow monitor is re-
  characterized, except for flow monitors exempted from 3-level RATA testing under section 6.5.2(b) or 6.5.2(e)
  of appendix A to this part.

              Figure 2 to Appendix B of Part 75--Relative Accuracy Test Frequency Incentive System
----------------------------------------------------------------------------------------------------------------
               RATA                       Semiannual \W\                           Annual \W\
----------------------------------------------------------------------------------------------------------------
SO2 or NOX\Y\.....................  7.5% < RA <= 10.0% or       RA <= 7.5% or  12.0 ppm \X\.
                                      15.0 ppm \X\.
NOX-diluent.......................  7.5% < RA <= 10.0% or       RA <= 7.5% or  0. 015 lb/mmBtu \X\.
                                      0.020 lb/
                                     mmBtu \X\.
Flow..............................  7.5% < RA <= 10.0% or       RA <= 7.5% or  1.5 fps \X\.
                                      2.0 fps \X\.
CO2 or O2.........................  7.5% < RA <= 10.0% or       RA <= 7.5% or  0.7% CO2/O2 \X\.
                                      1.0% CO2/O2
                                     \X\.
Moisture..........................  7.5% < RA <= 10.0% or       RA <= 7.5% or  1.0% H2O \X\.
                                      1.5% H2O \X\.
----------------------------------------------------------------------------------------------------------------
\W\ The deadline for the next RATA is the end of the second (if semiannual) or fourth (if annual) successive QA
  operating quarter following the quarter in which the CEMS was last tested. Exclude calendar quarters with
  fewer than 168 unit operating hours (or, for common stacks and bypass stacks, exclude quarters with fewer than
  168 stack operating hours) in determining the RATA deadline. For SO2 monitors, QA operating quarters in which
  only very low sulfur fuel as defined in Sec.   72.2 of this chapter, is combusted may also be excluded.
  However, the exclusion of calendar quarters is limited as follows: the deadline for the next RATA shall be no
  more than 8 calendar quarters after the quarter in which a RATA was last performed. A 720 operating hour grace
  period is available if the RATA cannot be completed by the deadline.
\X\ The difference between monitor and reference method mean values applies to moisture monitors, CO2, and O2
  monitors, low emitters of SO2, NOX, and low flow, only.
\Y\ A NOX concentration monitoring system used to determine NOX mass emissions under Sec.   75.71.

             Figure 3 to Appendix B of Part 75--Single Component Plus Balance Gas Cylinders EPA Protocol Gas Verification Program Results EPA Cylinder Gas Assays Performed by NIST
                                                                                [NIST to Insert: Month, Year]
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                Gas Component, e.g., SO2
                                                               ----------------------------------------------------------------------------------------------------------------
                EPA protocol gas                                                                        Audit Results                                                               Supplied
Specialty gas   production site     Vendor ID       Stamped       Tag value   ----------------------------------------------------------------      Vendor         Vendor ref       complete
 company name         name                        cylinder ID     (e.g., ppm                                     Re-analyzed                      analytical        std used      documentation
                                                                     SO2)       Orig tag value     Orig tag     value  (pass/    Re-analysis    method  (e.g.,    (e.g., NTRM)      (yes/no)
                                                                                (pass/fail)      (% diff)         fail)          (% diff)          FTIR)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
               .................  .............  .............  .............  ................  ...........  ................  .............  ................  .............  ................
                                                ------------------------------------------------------------------------------------------------------------------------------------------------
               .................  .............  .............  .............  ................  ...........  ................  .............
                                                ------------------------------------------------------------------------------------------------------------------------------------------------
               .................  .............  .............  .............  ................  ...........  ................  .............
                                                ------------------------------------------------------------------------------------------------------------------------------------------------
               .................  .............  .............  .............  ................  ...........  ................  .............
              ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
               .................  .............  .............  .............  ................  ...........  ................  .............  ................  .............
                                                ------------------------------------------------------------------------------------------------------------------------------------------------
               .................  .............  .............  .............  ................  ...........  ................  .............
                                                ------------------------------------------------------------------------------------------------------------------------------------------------
               .................  .............  .............  .............  ................  ...........  ................  .............
                                                ------------------------------------------------------------------------------------------------------------------------------------------------
               .................  .............  .............  .............  ................  ...........  ................  .............
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
A gaseous component is said to fail only if all available analytical techniques used in the audit indicate greater than a 2.0% difference from the cylinder tag value. Any accuracy assessment
  is an instantaneous snapshot of the process being measured. These results should not be regarded as a final statement on the accuracy of EPA Protocol gases. They can be used as an indicator
  of the current status of the accuracy of EPA Protocol gases as a whole. However, individual results should not be taken as definitive indicators of the analytical capabilities of individual
  producers. EPA presents this information without assigning a rating to the gas vendors, for example, who is the best, who is approved, or is not approved.
% diff = 100 x (Tag Value - NIST Value)/NIST Value
Note: For cylinders with more than one component plus balance gas, change the title appropriately, e.g., ``FIGURE 3 TO APPENDIX B OF PART 75--BI-BLEND PLUS BALANCE GAS CYLINDERS * * * '' and
  add appropriate columns to Figure 3 for the additional components following the same format used in the columns for SO2 above.

    31. In Appendix E to Part 75, Section 2.1 is amended by revising
the last sentence to read as follows:

Appendix E to Part 75--Optional NOX Emissions Estimation
Protocol for Gas-Fired Peaking Units and Oil-Fired Peaking Units

* * * * *

2.1 Initial Performance Testing

    * * * The requirements in section 6.1.2 of appendix A to this
part shall apply to any stack testing performed to obtain
O2 and NOX concentration measurements under
this appendix, either for units using the excepted methodology in
this appendix or for units using the low mass emissions excepted
methodology in Sec.  75.19.
* * * * *

Appendix F to Part 75 [Amended]

    32. Appendix F to Part 75 is amended by removing and reserving
section 9.

Appendix K to Part 75 [Removed]

    33. Appendix K to Part 75 is removed.

[FR Doc. 2010-10955 Filed 6-10-10; 8:45 am]
BILLING CODE 6560-50-P