Quantifying Uncontrolled Landfill Gas Emissions from Two Florida ...

Table 3-38. Monomethyl Mercury Concentrations (ng/m 3 ) from Site #2
Sample / Well Location
Monomethyl Mercury Gas
Concentration (ng/m 3 )
Spike Recovery
(%)
Gas Sample 1 0.12 NA
Gas Sample 2 0.06 NA
Gas Sample 3 0.31 NA
Spike Sample NA 62.6
Analytical Spike NA 90.9
Analytical Spike Duplicate NA 102.4
3.2.8 Elemental Mercury Measurements
Lumex elemental mercury continuous sampling concentrations from Site #2 ranged from 22 to
64 ng/m 3 with an average of 47±17 ng/m 3 . These samples were collected during a 4 hour period
on 2/23/2007. The sampling with the Lumex was also performed in conjunction with the total
mercury samples at this site.
3.2.9 Calculation of NMOC Fluxes
The emissions flux value of each compound presented in Table 3-34 was estimated using the
method described in Section 1.7 of this document. The net measured methane flux values from
each landfill cell were used to estimate the emissions flux value of each compound. In order to
perform this calculation, the estimated methane emission values presented in Table 3-33 were
used (5,950 kg/day for the control cell and 1,100 kg/day for the bioreactor cell).
Tables 3-39 presents the estimated flux of each compound (in units of grams per day) from the
control and bioreactor cells of Site #2.
3-38