N.H. Code Admin. R. Env-A 804.08

Current through Register No. 25, June 20, 2024

Section Env-A 804.08 - Calculation of Daily-Weighted Average for Coating Lines With Bubble or Control Device

The owner or operator of a coating source that complies with Env-A 1200, by using add-on control equipment or a bubble and which is subject to a pounds VOC/gallon of coating solids standard shall demonstrate compliance with such standard by calculating a daily-weighted average in pounds VOC/gallon solids as follows:

(a) "Pounds VOC per gallon of solids, daily-weighted (S_W)" means the daily weighted average VOC content, as applied, of the coatings used on multiple coating lines or operation in units of lb VOC/gal of coating solids or kg/l of coating solids;

(b) "n" means the number of different coatings and dilution solvents, as applied, used in a day on a coating line or operation;

(c) "i" means the subscript denoting an individual coating or dilution solvent;

(d) "V_i" means the volume of the coating or dilution solvent i as applied, used in a day on a coating line or operation in units of gal or l;

(e) "W_i" means the weight fraction of VOC of the coating or dilution solvent i as applied, minus water and exempt VOC compounds, used in a day on a coating line or operation in units of lb VOC/lb coating, or kg VOC/kg coating as determined from Method 24 or 24A analysis;

(f) "D_i" means the density of the coating or dilution solvent i in units of lbs/gal coating or kg/l coating as determined from Method 24 or 24A analysis;

(g) "F_i" means the volume fraction solids content of each coating i, as applied, used in a day on a coating line, in units of gal solids/gal coating or liter (l) solids/l coating as determined by calculation using the formulation; and

(h) SW shall be equal to the sum of the products of V_i, W_i, and D_i for coatings or dilution solvents one through n, divided by the sum of the products of V_i and F_i for coatings or dilution solvents one through n, as in the following equation:

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N.H. Code Admin. R. Env-A 804.08

#7788, eff 10-31-02; ss by #9802, eff 10-31-10

Amended by Volume XXXIX Number 19, Filed May 9, 2019, Proposed by #12762, Effective 5/1/2019, Expires 5/1/2029.