NR 440.71(3)(c)2.2. Subject to the provisions of subd. 3., each owner or operator shall continue to control emissions from the coating operation to at least the demonstrated level or 93%, whichever is lower. NR 440.71(3)(c)3.3. If the VOC control device in use during the emission reduction demonstration made pursuant to sub. (4) (a) 1. is subsequently replaced, each owner or operator shall: NR 440.71(3)(c)4.4. For coating operations demonstrated prior to modification or reconstruction pursuant to sub. (4) (a) 2. to have a total enclosure installed around the coating operation and all VOC emissions ventilated to a control device that is at least 92% efficient. NR 440.71(3)(c)4.a.a. Subject to the provisions of subd. 4. b., each owner or operator shall continue to ventilate all VOC emissions from the total enclosure to the control device and maintain control device efficiency at or above the demonstrated level or 95%, whichever is lower. NR 440.71(3)(c)4.b.b. If the VOC control device in use during the control device efficiency demonstration made pursuant to sub. (4) (a) 2. is subsequently replaced, each owner or operator shall install a VOC control device that is at least 95% efficient and ventilate all VOC emissions from the total enclosure to the control device. NR 440.71(3)(d)(d) For coating operations not subject to par. (c) 1. to 4., each owner or operator shall control emissions from the coating operation by recovering or destroying at least 93% of the VOC content of the coating applied at the coating applicator. NR 440.71(3)(e)(e) Each owner or operator constructing new coating mix preparation equipment with concurrent construction of a new VOC control device, other than a condenser, on a magnetic tape coating operation shall control emissions from the coating mix preparation equipment by installing and using a cover on each piece of equipment and venting the equipment to a 95% efficient control device. Each cover shall meet the following specifications: NR 440.71(3)(e)1.1. Cover shall be closed at all times except when adding ingredients, withdrawing samples, transferring the contents or making visual inspection when such activities cannot be carried out with cover in place. Such activities shall be carried out through ports of the minimum practical size. NR 440.71(3)(e)2.2. Cover shall extend at least 2 cm beyond the outer rim of the opening or shall be attached to the rim; NR 440.71(3)(e)3.3. Cover shall be of such design and construction that contact is maintained between cover and rim along the entire perimeter; NR 440.71(3)(e)4.4. Any breach in the cover, such as an opening for insertion of a mixer shaft or port for addition of ingredients, shall be covered consistent with par. (c) 2. and 3., when not actively in use. An opening sufficient to allow safe clearance for a mixer shaft is acceptable during those periods when the shaft is in place; and NR 440.71(3)(e)5.5. A polyethylene or nonpermanent cover may be used provided it meets the requirements of par. (c) 2. to 4. A cover may not be reused after once being removed. NR 440.71(3)(f)(f) Each owner or operator of affected coating mix preparation equipment not subject to par. (e) shall control emissions from the coating mix preparation equipment by either: NR 440.71(3)(f)1.1. Installing and using a cover that meets the specifications in par. (c) 1. to 5. and venting VOC emissions from the equipment to a VOC control device; or NR 440.71(3)(g)(g) In lieu of complying with pars. (b) to (f), each owner or operator may use coatings that contain a maximum of 0.20 kg of VOC per liter of coating solids as calculated on a weighted average basis for each nominal 1-month period. NR 440.71(4)(a)(a) The determination of the applicability of sub. (3) (c), standards for modified or reconstructed coating operations, and determination of control level required in sub. (3) (c) 3. b. is as follows: NR 440.71(4)(a)1.1. To establish applicability of sub. (3) (c) 1. to 3., each owner or operator shall demonstrate, prior to modification or reconstruction, that at least 90% of the VOC content of the coating applied at the coating applicator is recovered or destroyed. The demonstration shall be made using the procedures of par. (b) 1., 2., 3. or 4., as appropriate. NR 440.71(4)(a)2.2. To establish applicability of sub. (3) (c) 4., each owner or operator shall demonstrate, prior to modification or reconstruction, that a total enclosure is installed around the existing coating operation and that all VOC emissions are ventilated to a control device that is at least 92% efficient. The demonstration shall be made using the procedures of par. (b) 5. NR 440.71(4)(a)3.a.a. That the VOC control device subsequently installed is at least 95% efficient. Such demonstration shall be made using Equation (2) specified in par. (b) 2. d. or Equations (4) and (5) specified in par. (b) 3. d. and e., as applicable and the test methods and procedures specified in sub. (6) (b) to (g); and NR 440.71(4)(a)3.b.b. That the overall level of control after the VOC control device is installed is at least as high as the level demonstrated prior to modification or reconstruction pursuant to par. (a) 1. Demonstrations shall be made using the procedures of par. (b) 1., 2., 3. or 4., as appropriate. The required overall level of control subsequent to this demonstration shall be the level so demonstrated or 93%, whichever is lower. NR 440.71(4)(b)1.1. To demonstrate compliance with sub. (3) (b), (c) 1. to 3. or (d), standards for coating operations, when emissions from only the affected coating operations are controlled by a dedicated solvent recovery device, each owner or operator of the affected coating operation shall perform a liquid- liquid VOC material balance over each and every nominal 1-month period. When demonstrating compliance by this procedure, s. NR 440.08 (6) does not apply. The amount of liquid VOC applied and recovered shall be determined as discussed in subd. 1. c. The overall VOC emission reduction (R) is calculated using the following equation: NR 440.71(4)(b)1.a.a. The value of RSi is zero unless the owner or operator submits the following information to the administrator for approval of a measured value of RSi, that is greater than zero: