NR 462.05(5)(5) Can I use emission averaging to comply with this chapter? NR 462.05(5)(a)(a) As an alternative to meeting the requirements of s. NR 462.03 (2), if you have more than one existing large solid fuel boiler located at your facility, you may demonstrate compliance by emission averaging according to the procedures in this subsection. NR 462.05(5)(b)(b) For each existing large solid fuel boiler in the averaging group, the emission rate achieved during the initial compliance test for the HAP being averaged may not exceed the emission level that was being achieved on November 12, 2004, or the control technology employed during the initial compliance test may not be less effective for the HAP being averaged than the control technology employed on November 12, 2004. NR 462.05(5)(c)(c) You may average particulate matter or TSM, HCl and mercury emissions from existing large solid fuel boilers to demonstrate compliance with the limits in Table 1 of this chapter if you satisfy the requirements in pars. (d), (e) and (f). NR 462.05(5)(d)(d) The weighted average emissions from the existing large solid fuel boilers participating in the emissions averaging option shall be in compliance with the limits in Table 1 of this chapter at all times following the compliance date specified in s. NR 462.01 (5). NR 462.05(5)(e)1.1. You shall use Equation 1 to demonstrate that the particulate matter or TSM, HCl and mercury emissions from all existing large solid fuel boilers participating in the emissions averaging option do not exceed the emission limits in Table 1 of this chapter. where:
AWER is the average weighted emission rate for particulate matter or TSM, HCl or mercury, in units of pounds per million Btu of heat input
Er is the emission rate, as calculated according to Table 5 of this chapter, or fuel analysis as calculated by the applicable equation in sub. (7) (d) for boiler, i, for particulate matter or TSM, HCl or mercury, in units of pounds per million Btu of heat input
Hm is the maximum rated heat input capacity of boiler, i, in units of million Btu per hour
n is the number of large solid fuel boilers participating in the emissions averaging option
NR 462.05(5)(e)2.2. If you are not capable of monitoring heat input, you may use Equation 2 as an alternative to using Equation 1 to demonstrate that the particulate matter or TSM, HCl and mercury emissions from all existing large solid fuel boilers participating in the emissions averaging option do not exceed the emission limits in Table 1 of this chapter. where:
AWER is the average weighted emission rate for particulate matter or TSM, HCl or mercury, in units of pounds per million Btu of heat input
Er is the emission rate, as calculated according to Table 5 of this chapter, or fuel analysis as calculated by the applicable equation in sub. (7) (d) for boiler, i, for particulate matter or TSM, HCl or mercury, in units of pounds per million Btu of heat input
Sm is the maximum steam generation by boiler, i, in units of pounds.
Cf is the conversion factor, calculated from the most recent compliance test, in units of million Btu of heat input per pounds of steam generated
n is the number of large solid fuel boilers participating in the emissions averaging option
NR 462.05(5)(f)(f) You shall demonstrate continuous compliance on a 12-month rolling average basis determined at the end of every month (12 times per year) according to subds. 1. and 2. The first 12-month rolling-average period begins on the compliance date specified in s. NR 462.01 (5). NR 462.05(5)(f)1.1. For each calendar month, you shall use Equation 3 to calculate the 12-month rolling average weighted emission rate using the actual heat capacity for each existing large solid fuel boiler participating in the emissions averaging option. where:
AWER is the 12-month rolling average weighted emission rate for particulate matter or TSM, HCl or mercury, in units of pounds per million Btu of heat input
Er is the emission rate, as calculated during the most recent compliance test according to Table 5 of this chapter, or fuel analysis as calculated by the applicable equation in sub. (7) (d) for boiler, i, for particulate matter or TSM, HCl or mercury, in units of pounds per million Btu of heat input
Hb is the average heat input for each calendar month of boiler, i, in units of million Btu
n is the number of large solid fuel boilers participating in the emissions averaging option
NR 462.05(5)(f)2.2. If you are not capable of monitoring heat input, you may use Equation 4 as an alternative to using Equation 3 to calculate the 12-month rolling average weighted emission rate using the actual steam generation from the large solid fuel boilers participating in the emissions averaging option. where:
AWER is the 12-month rolling average weighted emission rate for particulate matter or TSM, HCl or mercury, in units of pounds per million Btu of heat input
Er is the emission rate, as calculated during the most recent compliance test according to Table 5 of this chapter, or fuel analysis as calculated by the applicable equation in sub. (7) (d) for boiler, i, for particulate matter or TSM, HCl or mercury, in units of pounds per million Btu of heat input
Sa is the actual steam generation for each calendar month by boiler, i, in units of pounds
Cf is the conversion factor, as calculated during the most recent compliance test, in units of million Btu of heat input per pounds of steam generated
n is the number of large solid fuel boilers participating in the emissions averaging option
NR 462.05(5)(g)(g) You shall develop and submit an implementation plan for emission averaging to the department for review and approval according to the procedures and requirements in subds. 1. to 4. NR 462.05(5)(g)1.1. You shall submit the implementation plan no later than 180 days before the date that the facility intends to demonstrate compliance using the emission averaging option. NR 462.05(5)(g)2.2. You shall include the information required in subd. 2. a. to g. in your implementation plan for all emission sources included in an emission averaging group. NR 462.05(5)(g)2.a.a. The identification of all existing large solid fuel boilers in the averaging group, including for each boiler either the applicable HAP emission level or the installed control technology. NR 462.05(5)(g)2.b.b. The process parameter, either heat input or steam generated, that will be monitored for each averaging group of large solid fuel boilers. NR 462.05(5)(g)2.c.c. The specific control technology or pollution prevention measure to be used for each emission source in the averaging group and the date of its installation or application. If the pollution prevention measure reduces or eliminates emissions from multiple sources, the owner or operator shall identify each source. NR 462.05(5)(g)2.d.d. The test plan for the measurement of particulate matter or TSM, HCl or mercury emissions in accordance with the requirements in sub. (3). NR 462.05(5)(g)2.e.e. The operating parameters to be monitored for each control system or device and a description of how the operating limits will be determined. NR 462.05(5)(g)2.f.f. If you request to monitor one or more alternative operating parameters pursuant to sub. (6), a description of the parameter or parameters to be monitored, an explanation of the criteria used to select the parameter or parameters and a description of the methods and procedures that will be used to demonstrate that the parameter indicates proper operation of the control device. You shall also include the frequency and content of monitoring, reporting and recordkeeping requirements and a demonstration, to the satisfaction of the department, that the proposed monitoring frequency is sufficient to represent control device operating conditions. NR 462.05(5)(g)2.g.g. A demonstration that compliance with each of the applicable emission limits will be achieved under representative operating conditions. NR 462.05(5)(g)3.3. Upon receipt, the department shall review and approve or disapprove the plan according to both of the following criteria: NR 462.05(5)(g)3.a.a. Whether the content of the plan includes all of the information specified in subd. 2. NR 462.05(5)(g)3.b.b. Whether the plan presents sufficient information to determine that compliance will be achieved and maintained. NR 462.05(5)(g)4.4. The department may not approve an emission averaging implementation plan containing any of the following provisions: NR 462.05(5)(g)4.a.a. Any averaging between emissions of differing pollutants or between differing sources. NR 462.05(5)(g)4.b.b. The inclusion of any emission source other than an existing large solid fuel boiler. NR 462.05(6)(6) What are my monitoring, installation, operation and maintenance requirements? NR 462.05(6)(a)(a) If you have an applicable work practice standard for carbon monoxide and your boiler or process heater is in any of the large subcategories and has a heat input capacity of 100 mmBtu per hour or greater, you shall install, operate and maintain a continuous emission monitoring system (CEMS) for carbon monoxide according to the procedures in subds. 1. to 6. by the compliance date specified in s. NR 462.01 (5). NR 462.05(6)(a)1.1. Each CEMS shall be installed, operated and maintained according to Performance Specification (PS) 4A of 40 CFR part 60, Appendix B, incorporated by reference in s. NR 484.04 (21), and according to the site-specific monitoring plan developed according to s. NR 462.04 (1) (d). NR 462.05(6)(a)3.3. Each CEMS shall complete a minimum of one cycle of operation, which includes sampling, analyzing and data recording, for each successive 15-minute period. NR 462.05(6)(a)5.5. You shall calculate and record a 30-day rolling average emission rate on a daily basis. A new 30-day rolling average emission rate is calculated as the average of all of the hourly CO emission data for the preceding 30 operating days. NR 462.05(6)(a)6.6. For purposes of calculating data averages, you may not use data recorded during periods of monitoring malfunctions, associated repairs, out-of-control periods, required quality assurance or control activities or when your boiler or process heater is operating at less than 50% of its rated capacity. You shall use all the data collected during all other periods in assessing compliance. Any period for which the monitoring system is out of control and data are not available for required calculations constitutes a deviation from the monitoring requirements. NR 462.05(6)(b)(b) If you have an applicable opacity operating limit, you shall install, operate, certify and maintain each continuous opacity monitoring system (COMS) according to the procedures in subds. 1. to 7. by the compliance date specified in s. NR 462.01 (5). NR 462.05(6)(b)3.3. As specified in s. NR 460.07 (3) (d) 1., each COMS shall complete a minimum of one cycle of sampling and analyzing for each successive 10-second period and one cycle of data recording for each successive 6-minute period. NR 462.05(6)(b)5.5. You shall include in your site-specific monitoring plan procedures and acceptance criteria for operating and maintaining each COMS according to the requirements in s. NR 460.07 (4). At a minimum, the monitoring plan shall include a daily calibration drift assessment, a quarterly performance audit and an annual zero alignment audit of each COMS. NR 462.05(6)(b)6.6. You shall operate and maintain each COMS according to the requirements in the monitoring plan and the requirements of s. NR 460.07 (5). Identify periods the COMS is out of control, including any periods that the COMS fails to pass a daily calibration drift assessment, a quarterly performance audit or an annual zero alignment audit. NR 462.05(6)(b)7.7. You shall determine and record all the 6-minute averages, and one-hour block averages, as applicable, collected for periods during which the COMS is not out of control. NR 462.05(6)(c)(c) If you have an operating limit that requires the use of a CMS, you shall install, operate and maintain each continuous parameter monitoring system (CPMS) according to the procedures in subds. 1. to 5. by the compliance date specified in s. NR 462.01 (5). NR 462.05(6)(c)1.1. The CPMS shall complete a minimum of one cycle of operation for each successive 15-minute period. You shall have a minimum of 4 successive cycles of operation to have a valid hour of data. NR 462.05(6)(c)2.2. Except for monitoring malfunctions, associated repairs and required quality assurance or control activities, including, as applicable, calibration checks and required zero and span adjustments, you shall conduct all monitoring in continuous operation at all times that the unit is operating. A monitoring malfunction is any sudden, infrequent, not reasonably preventable failure of the monitoring to provide valid data. Monitoring failures that are caused in part by poor maintenance or careless operation are not malfunctions. NR 462.05(6)(c)3.3. For purposes of calculating data averages, you may not use data recorded during monitoring malfunctions, associated repairs, out of control periods or required quality assurance or control activities. You shall use all the data collected during all other periods in assessing compliance. Any period for which the monitoring system is out-of-control and data are not available for required calculations constitutes a deviation from the monitoring requirements. NR 462.05(6)(c)4.4. Determine the 3-hour block average of all recorded readings, except as provided in subd. 3. NR 462.05(6)(c)5.5. Record the results of each inspection, calibration and validation check. NR 462.05(6)(d)(d) If you have an operating limit that requires the use of a flow measurement device, you shall meet the requirements in par. (c) and subds. 1. to 4. NR 462.05(6)(d)1.1. Locate the flow sensor and other necessary equipment in a position that provides a representative measurement of the flow. NR 462.05(6)(d)2.2. Use a flow sensor with a measurement sensitivity of 2% of the flow rate. NR 462.05(6)(d)3.3. Reduce swirling flow or abnormal velocity distributions due to upstream and downstream disturbances. NR 462.05(6)(e)(e) If you have an operating limit that requires the use of a pressure measurement device, you shall meet the requirements in par. (c) and subds. 1. to 6. NR 462.05(6)(e)1.1. Locate the pressure sensor in a position that provides a representative measurement of the pressure. NR 462.05(6)(e)2.2. Minimize or eliminate pulsating pressure, vibration and internal and external corrosion. NR 462.05(6)(e)3.3. Use a gauge with a minimum tolerance of 1.27 centimeters of water or a transducer with a minimum tolerance of one percent of the pressure range. NR 462.05(6)(e)5.5. Using a manometer, check gauge calibration quarterly and transducer calibration monthly. NR 462.05(6)(e)6.6. Conduct calibration checks any time the sensor exceeds the manufacturer’s specified maximum operating pressure range or install a new pressure sensor. NR 462.05(6)(f)(f) If you have an operating limit that requires the use of a pH measurement device, you shall meet the requirements in par. (c) and subds. 1. to 3. NR 462.05(6)(f)1.1. Locate the pH sensor in a position that provides a representative measurement of scrubber effluent pH.
