NR 440.686(5)(g)2.2. Where the initial TRE index value is greater than 8.0 and the recalculated TRE index value is less than or equal to 8.0 but greater than 1.0, the owner or operator shall conduct a performance test in accordance with s. NR 440.08 and this subsection and shall comply with subs. (4) and (6) and this subsection. Performance tests shall be conducted as soon as possible after the process change but no later than 180 days from the time of the process change.

NR 440.686(5)(h)(h) Any owner or operator subject to the provisions of this section seeking to demonstrate compliance with sub. (1) (c) 6. shall use Method 2, 2A, 2C or 2D as appropriate, for determination of volumetric flow rate.

NR 440.686(6)(a)(a) Each owner or operator subject to sub. (3) shall notify the department of the specific provisions of sub. (3) with which the owner or operator has elected to comply. Notification shall be submitted with the notification of initial startup required by s. NR 440.07 (1) (c). If an owner or operator elects at a later date to use an alternative provision of sub. (3) with which he or she will comply, then the department shall be notified by the owner or operator within 90 days before implementing a change and, upon implementing the change, a performance test shall be performed as specified by sub. (5) within 180 days.

NR 440.686(6)(b)(b) Each owner or operator subject to the provisions of this section shall keep an up-to-date, readily accessible record of the following data measured during each performance test and also include the following data in the report of the initial performance test required under s. NR 440.08. Where a boiler or process heater with a design heat input capacity of 44 MW (150 million Btu/hour) or greater is used to comply with sub. (3) (a), a report containing performance test data need not be submitted but a report containing the information in subd. 2. a. is required. The same data specified in this subsection shall be submitted in the reports of all subsequently required performance tests where either the emission control efficiency of a control device, outlet concentration of TOC or the TRE index value of a vent stream from a recovery system is determined.

NR 440.686(6)(b)1.1. Where an owner or operator subject to the provisions of this section seeks to demonstrate compliance with sub. (3) (a) through use of either a thermal or catalytic incinerator:

NR 440.686(6)(b)1.a.a. The average firebox temperature of the incinerator, or the average temperature upstream and downstream of the catalyst bed for a catalytic incinerator, measured at least every 15 minutes and averaged over the same time period of the performance testing and

NR 440.686(6)(b)1.b.b. The percent reduction of TOC determined as specified in sub. (5) (b) achieved by the incinerator or the concentration of TOC (ppmv, by compound) determined as specified in sub. (5) (b) at the outlet of the control device on a dry basis corrected to 3% oxygen.

NR 440.686(6)(b)2.2. Where an owner or operator subject to the provisions of this section seeks to demonstrate compliance with sub. (3) (a) through use of a boiler or process heater:

NR 440.686(6)(b)2.b.b. The average combustion temperature of the boiler or process heater with a design heat input capacity of less than 44 MW (150 million Btu/hr) measured at least every 15 minutes and averaged over the same time period of the performance testing.

NR 440.686(6)(b)3.3. Where an owner or operator subject to the provisions of this section seeks to demonstrate compliance with sub. (3) (b) through use of a smokeless flare, flare design, that is, steam-assisted, air-assisted or nonassisted, all visible emission readings, heat content determinations, flow rate measurements and exit velocity determinations made during the performance test, continuous records of the flare pilot flame monitoring and records of all periods of operations during which the pilot flame is absent.

NR 440.686(6)(b)4.a.a. Where an absorber is the final recovery device in the recovery system, the exit specific gravity, or alternative parameter which is a measure of the degree of absorbing liquid saturation, if approved by the department, and average exit temperature, of the adsorbing liquid measured at least every 15 minutes and averaged over the same time period of the performance testing, both measured while the vent stream is normally routed and constituted; or

NR 440.686(6)(b)4.b.b. Where a condenser is the final recovery device in the recovery system, the average exit (product side) temperature measured at least every 15 minutes and averaged over the same time period of the performance testing while the vent stream is routed and constituted normally; or

NR 440.686(6)(b)4.c.c. Where a carbon adsorber is the final recovery device in the recovery system, the total steam mass flow measured at least every 15 minutes and averaged over the same time period of the performance test (full carbon bed cycle), temperature of the carbon bed after regeneration, and within 15 minutes of completion of any cooling cycle, and duration of the carbon bed steaming cycle, all measured while the vent stream is routed and constituted normally; or

NR 440.686(6)(b)4.d.d. As an alternative to subd. 4. a., b. or c., the concentration level or reading indicated by the organics monitoring device at the outlet of the absorber, condenser or carbon adsorber, measured at least every 15 minutes and averaged over the same time period of the performance testing while the vent stream is normally routed and constituted, or

NR 440.686(6)(c)(c) Each owner or operator subject to the provisions of this section shall keep up-to-date, readily accessible continuous records of the equipment operating parameters specified to be monitored under sub. (4) (a) and (c) as well as up-to-date, readily accessible records of periods of operation during which the parameter boundaries established during the most recent performance test are exceeded. The department may at any time require a report of these data. Where a combustion device is used to comply with sub. (3) (a), periods of operation during which the parameter boundaries established during the most recent performance tests are exceeded are defined as follows:

NR 440.686(6)(c)1.1. For thermal incinerators, all 3-hour periods of operation during which the average combustion temperature was more than 28°C (50°F) below the average combustion temperature during the most recent performance test at which compliance with sub. (3) (a) was determined.

NR 440.686(6)(c)2.2. For catalytic incinerators, all 3-hour periods of operation during which the average temperature of the vent stream immediately before the catalyst bed is more than 28°C (50°F) below the average combustion temperature during the most recent performance test at which compliance with sub. (3) (a) was determined. The owner or operator also shall record all 3-hour periods of operation during which the average temperature difference across the catalyst bed is less than 80% of the average temperature difference of the device during the most recent performance test at which compliance with sub. (3) (a) was determined.

NR 440.686(6)(c)3.3. All 3-hour periods of operation during which the average combustion temperature was more than 28°C (50°F) below the average combustion temperature during the most recent performance test at which compliance with sub. (3) (a) was determined for boilers or process heaters with a design heat input capacity of less than 44 MW (150 million Btu/hr).

NR 440.686(6)(c)4.4. For boilers or process heaters, whenever there is a change in the location at which the vent stream is introduced into the flame zone as required under sub. (3) (a).

NR 440.686(6)(d)(d) Each owner or operator subject to the provisions of this section shall keep up to date, readily accessible continuous records of the flow indication specified under sub. (4) (a) 2., (b) 2. and (c) 1., as well as up-to- date, readily accessible records of all periods when the vent stream is diverted from the control device or has no flow rate.

NR 440.686(6)(e)(e) Each owner or operator subject to the provisions of this section who uses a boiler or process heater with a design heat input capacity of 44 MW (150 million Btu/hr) or greater to comply with sub. (3) (a) shall keep up-to- date, readily accessible records of all periods of operation of the boiler or process heater.

NR 440.686 NoteNote: Examples of such records could include records of steam use, fuel use or monitoring data collected pursuant to other state or federal regulatory requirements.

NR 440.686(6)(f)(f) Each owner or operator subject to the provisions of this section shall keep up-to-date, readily accessible records of the flare pilot flame monitoring specified under sub. (4) (b), as well as up-to-date, readily accessible records of all periods of operations in which the pilot flame is absent.

NR 440.686(6)(g)(g) Each owner or operator subject to the provisions of this section shall keep up-to-date, readily accessible continuous records of the equipment operating parameters specified to be monitored under sub. (4) (e), as well as up-to-date, readily accessible records of all periods of operation during which the parameter boundaries established during the most recent performance test are exceeded. The department may at any time require a report of these data. Where an owner or operator seeks to comply with sub. (3) (c), periods of operation during which the parameter boundaries established during the most recent performance tests are exceeded are defined as follows: