where:
HT = Net heating value of the sample, MJ/scm; where the net enthalpy per mole of offgas is based on combustion at 25°C and 760 mm Hg, but the standard temperature for determining the volume corresponding to 1 mol is 20°C;
K= Constant, 1.74 x 10-7 (1/ppm) (g mol/scm) (MJ/kcal) where standard temperature for (g mol/scm) is 20°C;
CI= Concentration of sample component i in ppm on a wet basis, as measured for organics by Reference Method 18 in 40 CFR part 60 and measured for hydrogen and carbon monoxide by ASTM D 1946-82, as incorporated by reference as specified in section 33-24-01-05; and
Hi= Net heat of combustion of sample component i, kcal/9 mol at 25°C and 760 mm Hg. The heats of combustion may be determined using ASTM D 2382-83, as incorporated by reference as specified in section 33-24-01-05, if published values are not available or cannot be calculated.
Log10 (Vmax) = (HT +28.8)/31.7
where:
28.8 = Constant,
31.7 = Constant,
HT = The net heating value as determined in subdivision b.
Vmax = 8.706+0.7084 (HT)
where:
8.706 = Constant,
0.7084 = Constant,
HT = The net heating value as determined in subdivision b.
N.D. Admin Code 33-24-02-173
General Authority: NDCC 23-20.3-03
Law Implemented: NDCC 23-20.3-03, 23-20.3-04