k is the total number of raw inks and related coatings measured as used in direct mass quantities with different amounts of VOC content

m is the total number of raw inks and related coatings measured as used by volume with different amounts of VOC content or different densities

n is the total number of raw inks and related coatings measured as used by volume with different amounts of VOC content or different amounts of VOC content or different VOC solvent densities

NR 440.56(4)(c)2.c.c. The total corrected liquid volume of VOC used shall be determined by the following equation:

m and n are the respective total numbers of VOC dilution and cleaning solvents measured as used by volume with different densities

NR 440.56(4)(c)2.d.d. The total corrected liquid volume of VOC solvent recovered shall be determined by the following equation:

k is the total number of VOC solvents, miscellaneous solventborne waste inks, and waste VOC solvents measured as recovered by volume with different densities

NR 440.56(4)(c)2.e.e. The average VOC emission percentage for the affected facility shall be determined by the following equation:

NR 440.56(4)(d)(d) If 2 or more affected facilities are controlled by the same solvent recovery system, compliance shall be determined by the procedures specified in par. (b) or (c), whichever applies, except that (Lt)a and (Lr)a, (Mt)a, (Mr)a and (Mv)a are the collective amounts of VOC solvent and water corresponding to all the affected facilities controlled by that solvent recovery system. The average VOC emission percentage for each of the affected facilities controlled by that same solvent recovery system shall be assumed to be equal.

NR 440.56(4)(e)(e) Except as provided under par. (f), if an existing facility and an affected facility are controlled in common by the same solvent recovery system, the owner or operator shall determine compliance by conducting a separate emission test on the existing facility and then conducting a performance test on the combined facilities as follows:

NR 440.56(4)(e)1.1. Before the initial startup of the affected facility and at any other time as requested by the department, the owner or operator shall conduct an emission test on the existing facility controlled by the subject solvent recovery system. The solvent recovery system may handle VOC emissions from only the existing facility not from affected facilities, during the emission test.

NR 440.56(4)(e)2.2. During the emission test, the affected facility shall be subject to the standard stated in sub. (3).

NR 440.56(4)(e)3.3. The emission test shall be conducted over a 30 consecutive calendar day averaging period according to the conditions stipulated in par. (a) 1. through 5., except that the conditions pertain to only existing facilities instead of affected facilities.

NR 440.56(4)(e)4.4. The owner or operator of the existing facility shall provide the department at least 30 days prior notice of the emission test to afford the department the opportunity to have an observer present.

NR 440.56(4)(e)5.5. The emission percentage for the existing facility during the emission test shall be determined by one of the following procedures:

NR 440.56(4)(e)5.a.a. If the existing facility uses a combination of waterborne and solventborne ink systems, the average VOC emission percentage shall be determined on a direct mass basis according to par. (b) or (d), whichever applies, with the following equation:

NR 440.56(4)(e)5.b.b. If the existing facility uses only solventborne ink systems, the owner or operator may choose to determine the emission percentage either on a direct mass basis or a density-corrected liquid volume basis according to par. (c) or (d), whichever applies. On a direct mass basis, the average VOC emission percentage shall be determined by the equation presented in subd. 5. a. On a density-corrected liquid volume basis, the average VOC emission percentage shall be determined by the following equation:

NR 440.56(4)(e)6.6. The owner or operator of the existing facility shall furnish the department with a written report of the results of the emission test.

NR 440.56(4)(e)7.7. After completion of the separate emission test on the existing facility, the owner or operator shall conduct a performance test on the combined facilities with the solvent recovery system handling VOC emission from both the existing and affected facilities.

NR 440.56(4)(e)8.8. During performance test, the emission percentage for the existing facility, Pe, shall be assumed to be equal to that determined in the latest emission test. The department may request additional emission tests if any physical or operational changes occur to the existing facility.

NR 440.56(4)(e)9.9. The emission percentage for the affected facility during performance tests with both existing and affected facilities connected to the solvent recovery system shall be determined by one of the following procedures:

NR 440.56(4)(e)9.a.a. If the combined facility uses both waterborne and solventborne ink systems, the average VOC emission percentage shall be determined on a direct mass basis according to par. (b) or (d), whichever applies, with the following equation:

NR 440.56(4)(e)9.b.b. If the combined facility uses only solventborne ink systems, the owner or operator may choose to determine performance of the affected facility either on a direct mass basis or a density-corrected liquid volume basis according to par. (c) or (d), whichever applies. On a direct mass basis, the average VOC emission percentage shall be determined by the equation presented in subd. 9. a. On a density-corrected liquid volume basis, the average VOC emission percentage shall be determined by the following equation: