where,
MNMOC = Total NMOC emission rate from the landfill, megagrams per year
k = methane generation rate constant, year-1
Lo = methane generation potential, cubic meters per megagram solid waste
Mi = mass of solid waste in the ith section, megagrams
ti = age of the ith section, years
CNMOC = concentration of NMOC, parts per million by volume as hexane
3.6 * 10-9 = conversion factor
The mass of nondegradable solid waste may be subtracted from the total mass of solid waste in a particular section of the landfill when calculating the value for Mi if documentation of the nature and amount of such wastes is maintained
MNMOC = 2Lo R (e-kc-e-kt) CNMOC (3.6 * 10-9)
Where:
MNMOC = mass emission rate of NMOC, megagrams per year
Lo = methane generation potential, cubic meters per megagram solid waste
R = average annual acceptance rate, megagrams per year
k = methane generation rate constant, year-1
t = age of landfill, years
CNMOC = concentration of NMOC, parts per million by volume as hexane
c = time since closure, years; for active landfill c = O and e-kc1
3.6 * 10-9 = conversion factor
The mass of nondegradable solid waste may be subtracted from the total mass of solid waste in a particular section of the landfill when calculating the value of R, if documentation of the nature and amount of such wastes is maintained.
MNMOC = 1.89 * 10-3 QLFG CNMOC
where,
MNMOC = mass emission rate of NMOC, megagrams per year
QLFG = flow rate of landfill gas, cubic meters per minute
CNMOC = NMOC concentration, parts per million by volume as hexane
Control Efficiency = (NMOCin - NMOCout)/(NMOCin)
where,
NMOCin = mass of NMOC entering control device
NMOCout = mass of NMOC exiting control device
40 C.F.R. §60.754