Inlet and outlet elemental mercury concentrations were measured using l-hour EPA
Method 29, rather than using the on-line continuous emissions monitor, SEMTECH 2000.
Problems with the conversion system (used to convert oxidized mercury into elemental state)
associated with the SEMTECH 2000 precluded measurement of oxidized mercury. (The
SEMTECH analyzer only measures elemental mercury and uses a conversion system to convert
oxidized forms of mercury to elemental mercury. The oxidized fraction is measured by difference
between the total mercury in converted samples less the mercury in unconverted samples. At this
time, the SEMTECH analyzer is working, but the conversion system is still under
characterization.) Therefore, wet methods were preferable.