Particulate Capture Data

Preliminary data on total quantity of particulates captured by trees in the VEB indicate capture rates that are favorable according to levels reported in the literature (Table 1 shows data for one sample date). Control samples indicate relatively low levels of particulates under nearby ambient conditions away from the tunnel fans.

Sample Type Total Particulate Matter,
VEB Samples (mg/cm2)		 Total Particulate Matter,
Control Samples (mg/cm2)
Tree Part Eastern
Redcedar (35')		 Eastern
Redcedar (45')		 Limber Pine (45') Eastern
Redcedar		 Limber Pine
Top 3.06 0.70 0.24 0.06 0.02
Bottom 4.02 1.49 0.38
Table 1. Particulate capture (mg/cm2) by Eastern redcedar and limber pine placed at 35 and 45 feet from building fans at a pullet facility for one sample date (October 10, 2005). Foliage was sampled form the top and bottom halves of VEB trees, and from one location on control trees.

Additional data processing will allow determination of total leaf area within the VEB and estimation of total particulate capture, as well as information for each particle size fraction.






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