There appears to be much confusion on the sources of micro
particulates. Wood burning produces large quantities of microparticulates
smaller than 0.03 microns. In large measure there has been little
actual measurements of particulates in residential areas. The
following two charts are based on data supplied by the Bay Area
Air Management District and published in the San Francisco Chronical,
p A1 & A21, on 11/28/96.
This chart was generated from the lower chart by Dr. Wayne Ott
by assuming "construction" and "other" sources
of PM-10 have zero PM-2.5 emissions. (W. Ott, 8/17/97) Dr. Ott
has monitored PM-2.5 in residential for over two years.
Bare in mind that the figures are based on a yearly average.
If one concentrated on the heating season, the contribution of
Fireplaces and woodstoves would be even greater.
Burning Issues Box 1045
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