TABLE 2

Source Gas Volume, DSCFM a Concentration GR/DSCF b 7,000 or less 0.100 8,000 0.096 9,000 0.092 10,000 0.089 20,000 0.071 30,000 0.062 40,000 0.057 50,000 0.053 60,000 0.050 80,000 0.045 100,000 0.042 120,000 0.040 140,000 0.038 160,000 0.036 180,000 0.035 200,000 0.034 300,000 0.030 400,000 0.027 500,000 0.025 600,000 0.024 800,000 0.021 1,000,000 or more 0.020 Interpolation of the data in this part for airflow rates between 7,000 dscfm and 1,000,000 dscfm must use the equation: c = 1.7627 x FR corrected -0.3241 where: c = concentration limit in gr/dscf FR corrected = gas volume in dscfm a Dry standard cubic feet per minute b Grains per dry standard cubic foot.