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APR 3 0 2008 <br />Attachment I <br />Key to Count Sheets <br />Count Sheets <br />Analytical Procedures <br />Structures identifications consist of an Asbestos Tyne followed by a Structure Type <br />Asbestos Tme Structure Tvaes <br />A = amosite F = fiber <br />An = anthophyllite B = bundle <br />C = chrysotile C = cluster <br />Cr = crocidolite M = matrix <br />T = tremolite <br /> NSD = no structures detected <br /> /M = other structure associated with a matrix <br /> NA = non-asbestos fiber <br /> /X = Partly obscured by a grid bar <br /> QF = questionable fiber, no confirmation of identification <br /> Sizing Conversion <br /> 1 length unit = 5 mm on screen = 0.278 micron <br /> 1.80 length units = 0.5 micron <br /> 18.0 length units = 5 microns <br /> 1 width unit = 1 mm on screen = 0.0556 micron <br /> TEM Analysts <br />Jeanne S_ Orr <br />Greg Behnfeldt <br />r--- - - <br />30 <br />0 <br />Z 30 <br />25 <br />b <br />20 <br />o, <br />m 115 <br />10 <br />e <br />5 <br />e <br />ON 0 <br />TEM Confidence Limits <br />Paul D. LoScalzo <br />Mark Steiner <br />Norberto Zimbelman <br />0 5 10 15 20 <br />Number of Structures Counted <br />UPPer and lower 95% confidence bounds for the number of structures counted assuming a Poisson distribution. <br />m <br />w <br />File: Shared on server T1Offforms.sWAtW-ent 1 <br />Revised: 02127102