Note: The intent of these standards is to minimize the emissions of VOC through the application of best demonstrated technologies (BDT). The numerical emission limits in this standard are expressed in terms of total organic compounds. The emission limit reflects the performance of BDT.
where:
E is the emission rate of total organic compounds, mg/liter of gasoline loaded
Vesi is the volume of air-vapor mixture exhausted at each interval"i", scm
Cei is the concentration of total organic compounds at each interval "i", ppm
L is the total volume of gasoline loaded, liters
n is the number of testing interval
i is the emission testing interval of 5 minutes
K is the density of calibration gas, 1.83 10 6 for propane and 2.41 106 for butane, mg/scm
Wis. Admin. Code Department of Natural Resources NR 440.64