Note: With regard to use of the phrase "first installed" in this paragraph, the first installation date for a control device does not change if the device is later moved to a new location. For example, if a brand new control device first installed in 1992 is moved to a new location in 1998, the first installation date is still 1992.
where:
Wi is the weight of the "i"th VOC compound, in grams.
Ww is the weight of water, in grams.
We is the weight of exempt compound, in grams.
MWi is the molecular weight of the "i"th VOC compound, in grams per gram-mole.
MWw is the molecular weight of water, in grams per gram-mole.
MWe is the molecular weight of the "e"th exempt compound, in grams per gram-mole.
PPc is the VOC composite vapor pressure at 68°F, in mm Hg.
VPi is the vapor pressure of the "i"th VOC compound at 68°F, in mm Hg.
Wis. Admin. Code Department of Natural Resources NR 422.143