Comment wbgen-ctb SNF 2008-02-19 12:48:48: exhaust measurements

[rissman at snf.stanford.edu]

I used the anemometer to measure the face velocity at the bench.  I got about 110 fpm at the face of the bench.  Most of the others are closer to 150-200 fpm, including the solvent bench which is back-to-back with wbgen, which was 160 fpm.