West Virginia Code of State Rules › Agency 45 - Air Quality › Title 45 - LEGISLATIVE RULE DEPARTMENT OF ENVIRONMENTAL PROTECTION AIR QUALITY › Series 45-21 - Regulation to Prevent and Control Air Pollution from the Emission of Volatile Organic Compounds › Section 45-21-43 - Test Methods and Compliance Procedures: Alternative Compliance Methods for Surface Coating

Current through Register Vol. XLI, No. 28, July 12, 2024
43.1.
				Daily-weighted average. -- The daily-weighted average VOC content, in units of
				mass of VOC per unit volume of coating, minus water and exempt compounds, as
				applied, of the coatings used on a day on a coating line or operation shall be
				calculated using the following equation:
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Where:
VOCW = The daily-weighted average VOC
				  content of the coatings, as applied, used on a coating line or operation in
				  units of kilograms of VOC per liter of coating (kg VOC/L) (pounds of VOC per
				  gallon of coating [lb VOC/gal]), minus water and exempt compounds;
n = The number of different coatings, as applied, each day on
				  a coating line or operation;
Vi = The volume of each coating, as
				  applied, each day on a coating line or operation in units of L (gal), minus
				  water and exempt compounds; and
Ci = The VOC content of each coating,
				  as applied, each day on a coating line or operation in units of kg VOC/L of
				  coating (lb VOC/gal), minus water and exempt compounds; and
VT = The total volume of all coating,
				  as applied, each day on a coating line or operation in units of L (gal), minus
				  water and exempt compounds.
43.2. Overall emission reduction efficiency
				for control systems. -- The overall emission reduction efficiency needed to
				demonstrate compliance is determined each day as follows:
43.2.1. Obtain the emission limitation from
				the applicable section of this regulation.
43.2.2. Calculate the emission limitation on
				a solids basis according to the following equation:
S = C/(1-(C/d))
Where:
S = The VOC emission limitation in terms of kg VOC/L of
				  coating solids (lb VOC/gal);
C = The VOC emission limitation in terms of kg VOC/L of
				  coating (lb/gal), minus water and exempt compounds; and
d = The density of VOC for converting emission limitation to
				  a solids basis. The density equals 0.882 kg/L (7.36 lb/gal).
43.2.3. Calculate the required overall
				emission reduction efficiency of the control system for the day according to
				the following equation:
E = ((VOCa -
				  S)/VOCa)) x 100
Where:
E = The required overall emission reduction efficiency of the
				  control system for the day;
VOCa = (1) The maximum VOC content of
				  the coatings, as applied, used each day on the subject coating line or
				  operation, in units of kg VOC/L of coating solids (lb/gal), as determined by
				  the applicable test methods and procedures specified in section 42.; or (2) The
				  daily-weighted average VOC content, as applied, of the coatings used each day
				  on the subject coating line or operation, in units of kg VOC/L of coating
				  solids (lb/gal), as determined by the applicable test methods and procedures
				  specified in section 42. and the procedure in subdivision 43.2.4.; and
S = VOC emission limitation in terms of kg VOC/L of coating
				  solids (lb VOC/gal).
43.2.4. The daily-weighted average VOC
				content, as applied, of the coatings used on a coating line or operation in
				units of mass of VOC per unit volume of coating solids shall be calculated by
				the following equation:
Click here
				  to view image
Where:
VOCWS = The daily-weighted average VOC
				  content, as applied, of the coatings used on a coating line or operation in
				  units of mass of VOC per unit volume of coating solids;
n = The number of different coatings, as applied, used in a
				  day on a coating line or operation;
Vi = The volume of each coating (i),
				  as applied, used in a day on a coating line or operation in units of liters (L)
				  (gallons [gal]);
WVOCi = The weight fraction of VOC in
				  each coating (i), as applied, used in a day on a coating line or operation in
				  units of kg VOC/kg coating (lb/lb);
Di = The density of each coating (i),
				  as applied, used in a day on a coating line or operation in units of kg
				  coating/L of coating (lb/gal);
VSi = The volume fraction solids
				  content of each coating (i), as applied, used on a day on a coating line or
				  operation in units of L solids/L coating (gal/gal);