Current through Register Vol. 41, No. 3, September 23, 2024
A. The provisions
governing monitoring shall be as follows:
1.
With regard to the emissions standards in
9VAC5-40-8080 and
9VAC5-40-8090, the provisions of
9VAC5-40-40(Monitoring)
apply.
2. With regard to the
emission limits in
9VAC5-40-7970 through
9VAC5-40-8070, the following
provisions apply:
a.9VAC5-40-40 A and F.
b.
40 CFR
60.13.
c. Subsections B and C of this
section.
B.
The owner of an affected facility shall install, calibrate, maintain, and
operate a continuous emission monitoring system and record the output of the
system for measuring the oxygen or carbon dioxide content of the flue gas at
each location where carbon monoxide, sulfur dioxide, or nitrogen oxides
emissions are monitored and shall comply with the test procedures and test
methods specified in this subsection.
1. The
span value of the oxygen (or carbon dioxide) monitor shall be 25% oxygen (or
carbon dioxide).
2. The monitor
shall be installed, evaluated, and operated in accordance with
40 CFR
60.13.
3. The initial performance evaluation shall
be completed prior to the initial emission test as specified in
9VAC5-40-8100.
4. The monitor shall conform to Performance
Specification 3 in Appendix B of 40 CFR Part 60 except for section 2.3
(relative accuracy requirement).
5.
The quality assurance procedures of Appendix F of 40 CFR Part 60 except for
section 5.1.1 (relative accuracy test audit) shall apply to the
monitor.
6. If carbon dioxide is
selected for use in diluent corrections, the relationship between oxygen and
carbon dioxide levels shall be established during the initial emission test
according to the procedures and methods specified in subdivisions 6 a through 6
d of this subsection. This relationship may be reestablished during performance
compliance tests.
a. The fuel factor equation
in Reference Method 3B shall be used to determine the relationship between
oxygen and carbon dioxide at a sampling location. Reference method 3, 3A, or
3B, as applicable, shall be used to determine the oxygen concentration at the
same location as the carbon dioxide monitor.
b. Samples shall be taken for at least 30
minutes in each hour.
c. Each
sample shall represent a one-hour average.
d. A minimum of three runs shall be
performed.
7. The
relationship between carbon dioxide and oxygen concentrations that is
established in accordance with subdivision 6 of this subsection shall be
submitted to the board as part of the initial emission test report and, if
applicable, as part of the annual test report if the relationship is
reestablished during the annual emission test.
C. The procedures specified in this
subsection shall be used for determining compliance with the operating
requirements under
9VAC5-40-8120.
1. Compliance with the carbon monoxide
emission limits in
9VAC5-40-7980 shall be determined
using a four-hour block arithmetic average for all types of affected facilities
except mass burn rotary waterwall municipal waste combustors and refuse-derived
fuel stokers.
2. For affected mass
burn rotary waterwall municipal waste combustors and refuse-derived fuel
stokers, compliance with the carbon monoxide emission limits in
9VAC5-40-7980 shall be determined
using a 24-hour daily arithmetic average.
3. The owner of an affected facility shall
install, calibrate, maintain, and operate a continuous emission monitoring
system for measuring carbon monoxide at the combustor outlet and record the
output of the system and shall follow the procedures and methods specified in
subdivisions 3 a through 3 c of this subsection.
a. The continuous emission monitoring system
shall be operated according to Performance Specification 4A in Appendix B of 40
CFR Part 60.
b. During each
relative accuracy test run of the continuous emission monitoring system
required by Performance Specification 4A in Appendix B of 40 CFR Part 60,
carbon monoxide and oxygen (or carbon dioxide) data shall be collected
concurrently (or within a 30- to 60-minute period) by both the continuous
emission monitors and the test methods specified in subdivisions 3 b (1) and 3
b (2) of this subsection.
(1) For carbon
monoxide, Reference Method 10, 10A, or 10B shall be used.
(2) For oxygen (or carbon dioxide), Reference
Method 3, 3A, or 3B, as applicable, shall be used.
c. The span value of the continuous emission
monitoring system shall be 125% of the maximum estimated hourly potential
carbon monoxide emissions of the municipal waste combustor unit.
4. The four-hour block and 24-hour
daily arithmetic averages specified in subdivisions 1 and 2 of this subsection
shall be calculated from one-hour arithmetic averages expressed in parts per
million by volume corrected to 7.0% oxygen (dry basis). The one-hour arithmetic
averages shall be calculated using the data points generated by the continuous
emission monitoring system. At least two data points shall be used to calculate
each one-hour arithmetic average.
5. The owner of an affected facility may
request that compliance with the carbon monoxide emission limit be determined
using carbon dioxide measurements corrected to an equivalent of 7.0% oxygen.
The relationship between oxygen and carbon dioxide levels for the affected
facility shall be established as specified in subdivision B 6 of this
section.
6. The procedures
specified in subdivisions 6 a through 6 d of this subsection shall be used to
determine compliance with load level requirements under
9VAC5-40-8120 A.
a. The owner of an affected facility with
steam generation capability shall install, calibrate, maintain, and operate a
steam flow meter or a feedwater flow meter; measure steam (or feedwater) flow
in kilograms per hour (or pounds per hour) on a continuous basis; and record
the output of the monitor. Steam (or feedwater) flow shall be calculated in
four-hour block arithmetic averages.
b. The method included in section 4 of the
American Society of Mechanical Engineers publication, "Power Test Codes: Steam
Generating Units" (see
9VAC5-20-21) shall be used for
calculating the steam (or feedwater) flow required under subdivision 6 a of
this subsection. The recommendations in chapter 4 of the American Society of
Mechanical Engineers publication, "Interim Supplement 19.5 on Instruments and
Apparatus: Application, Part II of Fluid Meters" (see
9VAC5-20-21) shall be followed for
design, construction, installation, calibration, and use of nozzles and
orifices except as specified in subdivision 6 c of this subsection.
c. Measurement devices such as flow nozzles
and orifices are not required to be recalibrated after they are
installed.
d. All signal conversion
elements associated with steam (or feedwater flow) measurements must be
calibrated according to the manufacturer's instructions before each
dioxin/furan emission test, and at least once per year.
7. To determine compliance with the maximum
particulate matter control device temperature requirements under
9VAC5-40-8120 B, the owner of an
affected facility shall install, calibrate, maintain, and operate a device for
measuring on a continuous basis the temperature of the flue gas stream at the
inlet to each particulate matter control device utilized by the affected
facility. Temperature shall be calculated in four-hour block arithmetic
averages.
8. The maximum
demonstrated municipal waste combustor unit load shall be determined during the
initial emission test for dioxins/furans and each subsequent emission test
during which compliance with the dioxin/furan emission limit specified in
9VAC5-40-8040 is achieved. The
maximum demonstrated municipal waste combustor unit load shall be the highest
four-hour arithmetic average load achieved during four consecutive hours during
the most recent test during which compliance with the dioxin/furan emission
limit was achieved.
9. For each
particulate matter control device employed at the affected facility, the
maximum demonstrated particulate matter control device temperature shall be
determined during the initial emission test for dioxins/furans and each
subsequent emission test during which compliance with the dioxin/furan emission
limit specified in
9VAC5-40-8040 is achieved. The
maximum demonstrated particulate matter control device temperature shall be the
highest four-hour arithmetic average temperature achieved at the particulate
matter control device inlet during four consecutive hours during the most
recent test during which compliance with the dioxin/furan limit was
achieved.
10. At a minimum, valid
continuous emission monitoring system hourly averages shall be obtained as
specified in subdivisions 10 a and 10 b of this subsection for 75% of the
operating hours per day for 90% of the operating days per calendar quarter that
the affected facility is combusting municipal solid waste.
a. At least two data points per hour shall be
used to calculate each one-hour arithmetic average.
b. At a minimum, each carbon monoxide
one-hour arithmetic average shall be corrected to 7.0% oxygen on an hourly
basis using the one-hour arithmetic average of the oxygen (or carbon dioxide)
continuous emission monitoring system data.
11. All valid continuous emission monitoring
system data must be used in calculating the parameters specified under this
section even if the minimum data requirements of subdivision 10 of this
subsection are not met. When carbon monoxide continuous emission data are not
obtained because of continuous emission monitoring system breakdowns, repairs,
calibration checks, and zero and span adjustments, emissions data shall be
obtained using other monitoring systems as approved by the board or Reference
Method 10 to provide, as necessary, the minimum valid emission data.
12. Quarterly accuracy determinations and
daily calibration drift tests for the carbon monoxide continuous emission
monitoring system shall be performed in accordance with procedure 1 in Appendix
F of 40 CFR Part 60.