NR 665.1033(11)(a)2.a. a. Visually inspect closed-vent system joints, seams or other connections that are permanently or semi-permanently sealed (e.g., a welded joint between 2 sections of hard piping or a bolted and gasketed ducting flange) at least once per year to check for defects that could result in air pollutant emissions. Monitor a component or connection using the procedures in s. NR 665.1034 (2) to demonstrate that it operates with no detectable emissions following any time the component is repaired or replaced (e.g., a section of damaged hard piping is replaced with new hard piping) or the connection is unsealed (e.g., a flange is unbolted).

NR 665.1033(11)(a)2.b. b. Monitor closed-vent system components or connections other than those specified in subd. 2. a. annually and at other times requested by the department, except as provided for in sub. (14), using the procedures in s. NR 665.1034 (2) to demonstrate that the components or connections operate with no detectable emissions.

NR 665.1033(11)(a)3. 3. In the event that a defect or leak is detected, repair the defect or leak according to par. (c).

NR 665.1033(11)(a)4. 4. Maintain a record of the inspection and monitoring according to s. NR 665.1035.

NR 665.1033(11)(b) (b) Inspect and monitor each closed-vent system that is used to comply with sub. (10) (b) according to all of the following requirements:

NR 665.1033(11)(b)1. 1. Visually inspect the closed-vent system to check for defects that could result in air pollutant emissions. Defects include, but are not limited to, visible cracks, holes or gaps in ductwork or piping or loose connections.

NR 665.1033(11)(b)2. 2. Perform an initial inspection of the closed-vent system on or before the date that the system becomes subject to this section. Thereafter, perform the inspections at least once every year.

NR 665.1033(11)(b)3. 3. In the event that a defect or leak is detected, repair the defect according to par. (c).

NR 665.1033(11)(b)4. 4. Maintain a record of the inspection and monitoring according to s. NR 665.1035.

NR 665.1033(11)(c) (c) Repair all detected defects according to all of the following:

NR 665.1033(11)(c)1. 1. Control detectable emissions, as indicated by visual inspection, or by an instrument reading greater than 500 ppmv above background, as soon as practicable, but not later than 15 calendar days after the emission is detected, except as provided for in subd. 3.

NR 665.1033(11)(c)2. 2. Make a first attempt at repair no later than 5 calendar days after the emission is detected.

NR 665.1033(11)(c)3. 3. Delay of repair of a closed-vent system for which leaks have been detected is allowed if the repair is technically infeasible without a process unit shutdown, or if the owner or operator determines that emissions resulting from immediate repair would be greater than the fugitive emissions likely to result from delay of repair. Complete repair of the equipment by the end of the next process unit shutdown.

NR 665.1033(11)(c)4. 4. Maintain a record of the defect repair according to s. NR 665.1035.

NR 665.1033(12) (12) Operate closed-vent systems and control devices used to comply with this subchapter at all times when emissions may be vented to them.

NR 665.1033(13) (13) The owner or operator using a carbon adsorption system to control air pollutant emissions shall document that all carbon that is a hazardous waste and that is removed from the control device is managed in one of the following manners, regardless of the average volatile organic concentration of the carbon:

NR 665.1033(13)(a) (a) Regenerated or reactivated in a thermal treatment unit that meets one of the following:

NR 665.1033(13)(a)1. 1. The owner or operator of the unit has been issued an operating license under ch. NR 670 which implements the requirements of subch. X of ch. NR 664.

NR 665.1033(13)(a)2. 2. The unit is equipped with and operating air emission controls according to the applicable requirements of this subchapter and subch. CC or subch. AA of ch. NR 664 and subch. CC of ch. NR 664.

NR 665.1033(13)(a)3. 3. The unit is equipped with and operating air emission controls according to a national emission standard for hazardous air pollutants under 40 CFR part 61 or 63, or corresponding provisions of subch. III of ch. NR 446 and chs. NR 447 to 469.

NR 665.1033(13)(b) (b) Incinerated in a hazardous waste incinerator for which any of the following conditions has been met:

NR 665.1033(13)(b)1. 1. The owner or operator has been issued an operating license under ch. NR 670 which implements the requirements of subch. O of ch. NR 664.

NR 665.1033(13)(b)2. 2. The owner or operator has designed and operates the incinerator according to the interim license requirements of subch. O.

NR 665.1033(13)(c) (c) Burned in a boiler or industrial furnace for which any of the following conditions has been met:

NR 665.1033(13)(c)1. 1. The owner or operator has been issued an operating license under ch. NR 670 which implements the requirements of subch. H of ch. NR 666.

NR 665.1033(13)(c)2. 2. The owner or operator has designed and operates the boiler or industrial furnace according to the interim license requirements of subch. H of ch. NR 666.

NR 665.1033(14) (14) Any components of a closed-vent system that are designated, as described in s. NR 665.1035 (3) (i), as unsafe to monitor are exempt from sub. (11) (a) 2. b. if the owner or operator does all of the following:

NR 665.1033(14)(a) (a) Determines that the components of the closed-vent system are unsafe to monitor because monitoring personnel would be exposed to an immediate danger as a consequence of complying with sub. (11) (a) 2. b.

NR 665.1033(14)(b) (b) Adheres to a written plan that requires monitoring the closed-vent system components using the procedure in sub. (11) (a) 2. b. as frequently as practicable during safe-to-monitor times.