An owner or operator of a surface coating or printing facility subject to ss. NR 422.05 to 422.15 may achieve compliance with the emission limitations in those sections through the use of an internal offset provided the owner or operator has submitted, and the department has approved, an application under sub.(1) or (2). The owner or operator shall specify the subsection under which the application is submitted.
Note: In reviewing internal offset approvals, the U.S. environmental protection agency will require that the internal offset meet the criteria of its "Emissions Trading Policy Statement; General Principles for Creation, Banking and Use of Emission Reduction Credits", 51 FR 43814, December 4, 1986.
where E is the total allowable emissions from all of the coating and printing lines involved in the internal offset in kilograms (pounds), Y = 1 for facilities located in areas designated attainment or unclassified for ozone or in areas designated nonattainment for ozone with a federally approved demonstration of attainment, and Y = 0.8 for facilities located in areas designated nonattainment for ozone and lacking a federally approved demonstration of attainment, A1,2...n is the lowest of the allowable emission rate for each coating or printing line pursuant to ss. NR 422.05 to 422.15, or other limitation imposed by permit, order or approval, or the actual emission rate for each coating or printing line, as of the date of the internal offset application, in kilograms per liter (pounds per gallon) of coating or ink, excluding water, delivered to the applicator, B1,2...n is the amount of coating material or ink in liters (gallons), delivered to the applicator during the actual production day, C1,2 ...n is the volume fraction of solids in the coating or ink, delivered to the applicator during the actual production day, and D1,2...n is the theoretical volume fraction of solids in the coating or ink necessary to meet the lowest of the allowable emission rate for each coating or printing line pursuant to ss. NR 422.05 to 422.15, or other limitation imposed by permit, order or approval, calculated from: - See PDF for diagram
where P1,2...n is the density of the VOC used in the coating or ink delivered to the applicator during the actual production day in kilograms per liter (pounds per gallon). If the coating or ink does not contain any VOCs, or if the actual VOC density cannot be demonstrated by the owner or operator, a value of 0.88 kilograms per liter (7.36 pounds per gallon) shall be used for P.
Note: The reference to s. NR 425.04(3) refers to that section as it existed prior to March 1, 1990. As of March 1, 1990, the internal offset requirements of this chapter were moved from s. NR 425.04(3) to this section.
Wis. Admin. Code Department of Natural Resources NR 425.05