1) Build a temporary enclosure, as defined in sub. (2) (a) and conforming to the requirements of par. (b) 1., around the affected coating operation. The temporary enclosure shall be constructed and ventilated, through stacks suitable for testing, so that it has minimal impact on performance of the capture system; or

2) Shut down all other sources of VOC and continue to exhaust fugitive emissions from the affected coating operation through any building ventilation system and other room exhausts such as those on drying ovens. All such ventilation air shall be vented through stacks suitable for testing because the VOC content in each shall be determined.

NR 440.74(4)(a)1.c.c. Operate the emission control device with all emission sources connected and operating.

NR 440.74(4)(a)1.f.f. For each affected coating operation subject to sub. (3) (b) 1. (emission reduction standard for coating operations), compliance is demonstrated if the product of (E) × (F) is equal to or greater than 0.90.

NR 440.74(4)(a)2.2. For coating operations using carbon adsorption beds with individual exhausts the following gaseous emission test method is applicable when emissions from any affected coating operation are controlled by a fixed-bed carbon adsorption system with individual exhaust stacks for each adsorber vessel. The owner or operator using this method shall comply with the following procedures:

NR 440.74(4)(a)2.a.a. Construct the vapor capture system and control device so that each volumetric flow rate and the total VOC emissions can be accurately determined by the applicable test methods and procedures specified in sub. (6) (b) to (g);

NR 440.74(4)(a)2.b.b. Assure that all VOC emissions from the coating operation are segregated from other VOC sources and that the emissions can be captured for measurement, as described in sub. (4) (a) 1. b. 1) and 2);

NR 440.74(4)(a)2.c.c. Operate the emission control device with all emission sources connected and operating;

NR 440.74(4)(a)2.d.d. Determine the efficiency (Hv) of each individual adsorber vessel (v) using Equation 3:

NR 440.74(4)(a)2.e.e. Determine the efficiency of the carbon adsorption system (Hsys) by computing the average efficiency of the adsorber vessels as weighted by the volumetric flow rate (Qhv) of each individual adsorber vessel (v) using Equation 4:

NR 440.74(4)(a)2.g.g. For each affected coating operation subject to sub. (3) (b) 1. (emission reduction standard for coating operations), compliance is demonstrated if the product of (Hsys) × (F) is equal to or greater than 0.90.

NR 440.74(4)(a)3.3. The monthly liquid material balance method can be used only when a VOC recovery device controls only those emissions from one affected coating operation. It may not be used if the VOC recovery device controls emissions from any other VOC emission sources. When demonstrating compliance by this method, s. NR 440.08 (6) does not apply. The owner or operator using this method shall comply with the following procedures to determine the VOC emission reduction for each nominal 1-month period:

NR 440.74(4)(a)3.a.a. Measure the amount of coating applied at the coating applicator. This quantity shall be determined at a time and location in the process after all ingredients, including any dilution solvent, have been added to the coating or appropriate adjustments shall be made to account for any ingredients added after the amount of coating has been determined:

NR 440.74(4)(a)3.b.b. Determine the VOC content of all coatings applied using the test method specified in sub. (6) (a). This value shall be determined at a time and location in the process after all ingredients, including any dilution solvent, have been added to the coating or appropriate adjustments shall be made to account for any ingredients added after the VOC content in the coating has been determined;

NR 440.74(4)(a)3.c.c. Install, calibrate, maintain and operate, according to the manufacturer’s specifications, a device that indicates the cumulative amount of VOC recovered by the control device over each nominal 1-month period. The device shall be certified by the manufacturer to be accurate to within ±2.0%;

NR 440.74(4)(a)3.e.e. Calculate the overall VOC emission reduction (R) for each and every nominal 1-month period using Equation 5. Emissions during startups and shutdowns are to be included when determining R because startups and shutdowns are part of normal operation for this source category.

1) 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 but less than or equal to 6% by weight of the liquid VOC applied:

b) Documentation that the measured value of RSi, exceeds zero but is less than or equal to 6% by weight of the liquid VOC applied.