Document bBgyX1LvrkoXzqZeqBdg8YoO

7881 Calculation o f Number asbestos fibers per oz U0654 # fibers counted 1 EFA mm2 1256 #GO 10 GO Area mm2 0.013 Vol Filt ml 1 Dry W t grams 0.0959 Dry W t oz* 0.0033828 Asb. fibers/oz Asb. fibers/oz 2.86E+08 286 Million U0655 4 1256 10 0.013 1 0.081 0.002857 1.35E+09 1.4 Billion U1986 3 1256 10 0.013 0.1 0.20567 0.007255 4.00E+09 4.0 Billion * 28.34952 grams per oz Number fibers per oz = (# fibers-cted*EFA*100ml)/(#GO*GO Area*Vol filted*Dry wt) EFA = Effective Area o f the filte r GO = Grid Opening ~112\ ^ |l7|l PLAINTIFFS EXHIBIT WCD-243