(a) Grandfathered or electing electric generating facilities
(EGF) subject to 40 Code of Federal Regulations Part 75, effective June 25,
1999 (40 CFR Part 75) shall do the following.
(1) For grandfathered or electing EGFs subject to the requirements
of 40 CFR Part 75, concerning Continuous Emission Monitoring, all monitoring
systems must comply with the initial performance testing and periodic calibration,
accuracy testing, and quality assurance/quality control testing specified
in 40 CFR Part 75.
(2) For grandfathered and electing EGFs subject to 40
CFR Part 75, a certified monitoring system under 40 CFR Part 75 shall be used
to demonstrate compliance with this subchapter.
(A) If the grandfathered or electing EGF has a flow monitor
certified under 40 CFR Part 75, nitrogen oxides (NO
x) emissions in pounds per hour shall be determined using a NOx continuous emission monitoring system (CEMS) and
the flow monitor.
(B) If the grandfathered or electing EGF does not have a certified
flow monitor, but does have a NOx CEMS, NOx emissions in pounds per hour shall be determined
by multiplying pounds of NOx per million British
thermal units (lbs/MMBtu) times heat input in MMBtu per hour (MMBtu/hr). The
procedures in 40 CFR Part 75, Appendix F, concerning Conversion Procedures,
Section 3, shall be used to convert the measured concentration of NOx and a diluent (carbon dioxide (CO
2) or oxygen (O2)) into an emission rate
in lbs/MMBtu. The procedures in 40 CFR Part 75, Appendix F, Section 5, shall
be used to determine the hourly heat input in MMBtu/hr. These two values (lbs/MMBtu
and MMBtu/hr) shall be multiplied together to determine NO
x emissions in lbs/hr.
(C) The procedures in 40 CFR Part 75, Appendix E, concerning
Optional NOx Emissions Estimation Protocol for
Gas-fired Peaking Units and Oil-fired Peaking Units, may be used to estimate
the NOx emission rate.
(b) Grandfathered or electing EGFs not subject to 40 CFR Part
75 shall comply with:
(1) the initial performance testing and periodic calibration,
accuracy testing, and quality assurance/quality control testing specified
in 40 CFR Part 75; or
(2) those same requirements in 40 CFR Part 60, concerning
New Source Performance Standards (40 CFR Part 60). Actual emissions must be
determined by multiplying the CEMs data by an adjustment factor of 1.1 for
all grandfathered and electing EGFs not using a 40 CFR Part 75 monitoring
system if the CEMs exceeds 10% relative accuracy.
(3) in lieu of the monitoring required by paragraph (1)
or (2) of this subsection, the electric generating facility permit (EGFP)
may authorize alternative monitoring to calculate mass emissions under this
section. The applicant must submit the following for review of an alternative
monitoring proposal:
(A) a description of the monitoring approach to be used;
(B) a description of the major components of the monitoring
system, including the manufacturer, serial number of the component, the measurement
span of the component, and documentation to demonstrate that the measurement
span of each component is appropriate to measure all of the expected values;
(C) an estimate of the accuracy of the system and documentation
to demonstrate how the estimate of accuracy was determined;
(D) a description of the tests that will be used for initial
certification, initial quality assurance, periodic quality assurance, and
relative accuracy; and
(E) additional information may be requested before approving
a request for alternative monitoring. Alternative monitoring shall be incorporated
into the EGFP.
(4) emissions in pounds per hour shall be determined
using the NOxCEMS and one of the following methods.
(A) The owner or operator may elect to comply with subsection
(a)(2)(A) or (B) of this section.
(B) The grandfathered or electing EGF may use a flow monitor
certified under 40 CFR Part 60 to determine emissions in pounds per hour.
(C) NOx emissions in pounds per
hour may be determined by multiplying the lbs/MMBtu times the heat input in
MMBtu/hr. The procedures in 40 CFR Part 60, Appendix A, Method 19 shall be
used to convert the measured concentration of NOx
and a diluent (CO2 or O
2) into emission rates in lbs/MMBtu. The procedures in 40 CFR Part
75, Section 5, Appendix F shall be used to determine the hourly heat input
in MMBtu/hr. These two values (lbs/MMBtu and MMBtu/hr) shall be multiplied
together to determine NOx emissions in lbs/hr;
(5) for grandfathered and electing EGFs with a heat
input of less than 100 MMBtu/hr and for peaking units emissions in pounds
per hour, may be determined using the procedures in Appendix E of 40 CFR Part
75 to estimate the emission rate.
(c) The following requirements apply to all grandfathered
and electing EGFs.
(1) During a period when valid data is not being recorded
by monitoring devices approved for use to demonstrate compliance with this
subchapter, missing or invalid data shall be replaced with representative
default data in accordance with the provisions of 40 CFR Part 75, Subpart
D, concerning Missing Data Substitution Procedures.
(2) Data collected from monitoring of grandfathered and
electing EGFs shall be used to calculate the actual emissions over a control
period. The information in this report shall be submitted by June 30 of each
year and may be submitted with the report required under §101.336(b)
of this title (relating to Emission Monitoring, Compliance Demonstration,
and Reporting). At a minimum, the report shall contain the following information:
(A) a description of the monitoring protocol;
(B) a completed Form AR-1, Emissions Monitoring Data Form;
(C) other information as necessary to validate the actual
emissions during the prior control period, including, but not limited to,
periodic calibration results and maintenance logs.
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