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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 Tvne followed by a Structure Type <br />Asbestos Type Structure Types <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 />F_-- - <br />35 <br />V <br />z 30 <br />25 <br />° 20 <br />2 15 <br />v? <br />10 <br />5 <br />Paul D. LoScalzo <br />Mark Steiner <br />Norberto Zimbelman <br />TEM Confidence Limits <br /> <br />0 5 10 15 20 <br />Number or Structures Counted <br />Upper and lower 95% confidence bounds for the number of structures counted assuming a Poisson distribution. <br />CIO <br />r <br />W <br />FiW: Shared w server TIMams.sWAttachment I <br />R-isW: 02127/02