NR 665.1033(10)(a)(a) Design a closed-vent system to operate with no detectable emissions, as indicated by an instrument reading of less than 500 ppmv above background determined by the procedure in s. NR 665.1034 (2), and by visual inspections. NR 665.1033(10)(b)(b) Design a closed-vent system to operate at a pressure below atmospheric pressure. Equip the system with at least one pressure gauge or other pressure measurement device that can be read from a readily accessible location to verify that negative pressure is being maintained in the closed-vent system when the control device is operating. NR 665.1033(11)(11) The owner or operator shall monitor and inspect each closed-vent system required to comply with this section to ensure proper operation and maintenance of the closed-vent system by implementing all of the following requirements: NR 665.1033(11)(a)(a) Inspect and monitor each closed-vent system that is used to comply with sub. (10) (a) according to all of the following requirements: NR 665.1033(11)(a)1.1. Conduct an initial leak detection monitoring of the closed-vent system on or before the date that the system becomes subject to this section. Monitor the closed-vent system components and connections using the procedures in s. NR 665.1034 (2) to demonstrate that the closed-vent system operates with no detectable emissions, as indicated by an instrument reading of less than 500 ppmv above background. NR 665.1033(11)(a)2.2. After initial leak detection monitoring required in subd. 1., inspect and monitor the closed-vent system as follows: 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)(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)(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(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)(b)(b) Incinerated in a hazardous waste incinerator for which any of the following conditions has been met: 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.