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Attachment I <br />Key to Count Sheets <br />Count Sheets <br />Analytical Procedures <br />Structures identifications consist of an Asbestos Tvoe followed by a Structure Type <br />Asbestos Tvoe <br />A = amosite <br />An = anthophyllite <br />C = chrysotile <br />Cr = crocidalite <br />T = tremolite <br />Structure Tvoes <br />F = fiber <br />B = bundle <br />C = cluster <br />M = matrix <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 />I 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 />Jeanne S. Orr <br />Greg Behnfeldt <br />TEM Analysts <br />Paul D. LoScalzo <br />Mark Steiner <br />Norberto Zimbelman <br />TEM Confidence Limits <br />35 <br />30 <br />z <br />25 <br />9 <br />a ; 20 <br />m '• <br />~N15 , <br />10 <br />0 <br />e 5- - <br />a <br />0 <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 />File'. Sharetl on server TIOlffonnssglAnachmem I <br />Retiseo: 0227102 <br />