Rule 624.
Where:
VOC = Volatile organic compound fraction of the volatile fraction of all inks and coatings used on a graphic arts line, as applied, each calendar day averaging period, percent.
I = Individual ink or coating, as applied.
N = Number of different inks and coatings used on a graphic arts line, as applied, each calendar day averaging period.
LI = Volume of each ink or coating, as applied, used on the calendar day averaging period, gallons.
VVOCI = Volume fraction of volatile organic compounds in each ink or coating, as applied, percent.
VVCI = Volume fraction of volatiles in each ink or coating, as applied, percent. The provisions of subrule (3)(a) of this rule must be met if the value for "VOC" in the equation is less than or equal to 25%.
Where:
NV = Nonvolatile fraction of all inks and coatings used on a graphic arts line, as applied, minus water and exempt compounds, by volume, on a calendar day averaging period, percent.
I = Individual ink or coating, as applied.
N = Number of different coatings and inks used on a graphic arts line, as applied, each calendar day averaging period.
LI = Volume of each ink or coating, as applied, used on the calendar day averaging period, gallons.
VI = Volume fraction of non-volatiles in each ink or coating, as applied, percent.
VVOCI = Volume fraction of volatile organic compounds in each ink or coating, as applied, percent.
The provisions of subrule (3)(b) of this rule must be met if the value for "NV" in the equation is equal to or greater than 60%.
Mich. Admin. Code R. 336.1624