Quantifying Uncontrolled Landfill Gas Emissions from Two Florida ...
Quantifying Uncontrolled Landfill Gas Emissions from Two Florida ...
Quantifying Uncontrolled Landfill Gas Emissions from Two Florida ...
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3.2 <strong>Landfill</strong> Site #2<br />
3.2.1 Control Cell<br />
3.2.1.1 February 24<br />
ORS measurements were collected in the control cell during the afternoon of February 24. A<br />
schematic of the ORS measurement configuration <strong>from</strong> this cell can be found in Figure 2-4.<br />
Figure 3-4 presents a summary of the actual measurement configurations used in the cell, as well<br />
as the measurement results. The figure depicts the average calculated methane flux values along<br />
each VRPM measurement plane. The blue arrow depicts the prevailing wind values during the<br />
time of the measurements.<br />
Figure 3-4 Summary of ORS measurements conducted on Feb. 24 in the control cell of Site<br />
#2<br />
The figure shows that the prevailing winds were <strong>from</strong> the southeast during the time of the<br />
measurements. Based on the prevailing wind direction, the southern and eastern VRPM planes<br />
are located upwind of the actual landfill cell, so flux values measured along these VRPM planes<br />
represent methane emissions <strong>from</strong> the southern and eastern slopes of the cell (by convention of<br />
the measurement method, flux values <strong>from</strong> measurement planes located upwind of the landfill<br />
cell are shown as negative values). The VRPM planes located along the northern and western<br />
boundaries of the cell are downwind of the landfill cell (by convention, flux values <strong>from</strong><br />
measurement planes located downwind of the landfill cell are shown as positive values).<br />
The methane flux values measured along the northern, eastern, southern, and western VRPM<br />
measurement planes were 14, 7.8, 20, and 2.8 grams per second, respectively. The difference<br />
between the sum of the fluxes measured along the northern and western planes (17 g/s) and the<br />
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