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NYC 9/11 Public Portal Document

ShcI i[),t:h ii: 2Q2M 3068 Page. I of I (:lient Nance: Benjamin Kuizban & ot, Control Inc. Phase Contrast Microscopy(PM)Fiber Results rJ 2&t Broadway r.) Flow Air Fiber Fibers SciLab Client I)ctte Rate Duration Filtered Density Conc. Sample # Tields Fibers TWA A Sample # I Location Collected (llters/min.) (min.) (liters) (Fibers/mm 2 ) (Hbers/cc) A

()t 1 08/07/20()2 2.5 30 75 100 2 2.55 <0.036 Jan Raronjan PII --_ 02 ._._._._._._._._._._._ 08/07/2002 2.5 480 1200 100 3 3.82 <0.002 Jan Baronjatt P11 Reporting Notes: Analyzed by. 1'tcvie d. Ahywe M ,• DaIO Analyzed--08/t1(O0Z Sarnpin auatyied by N7t3.SH 74410(A) Method, f aec N3. 8f15P)4: Limit of Deflection= 5.5 fibers j 101) tichts or 7 fit--rsMnn3: rhis spurt ceiales ONLY to the s:mtpk aaalysis exptcssed as tibzrs iq nuts of Liter area; ND-No fibers obaervrd: NA= Not Aoatyrxd: Wniha -lice kctt gntiek f,1d any = I).4t?7R5 nxtt3 TWA = 8 Hr T1VA c31 ssumes ter, exposure fi+r remainder of S hr period not !ampted: Upper 95% Confidence lirttit (H rploytirs CottrytiunecTraQ• C.akulntrd as a one sided HCL to daleonine 45% ecriainty of rr» t pliance with the 0.01 flounce standard• t itimatca relative stnndvd deviation_ rntralab Sr-0.41)5, Interlab Sr=0.45. New Ytrk WnpU (N YWQOH ELAP lob k 11480): National Institute of Standards and Tecinmbr y Acen'di t:riirtn requirarscuh trwrdaie brat this repot mart not be reprndtuxd except in iali without tttz appntval d tla: inMxatury_ AIl1A N 11'_&43.

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