PCM fiber results lab report, Aug 1998

NYC 9/11 Public Portal Document

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SctLabJob#; 98-08-7530 Client Name: Applied Technology Services, Inc. Phase Contrast Microscopy (PCM) Fiber Results K a A98113: Durings I a Flow Air Fiber Fibers SciLab Client Duratioii Filtered Reids Fibers Density Cone. TWA Sample # Sample # / Location CoUectod (liiers/min.) (rain.) (liters) (Fibers/mm ) (Fibers/cc)

II YK 0827987 II 0 0 0 100 0.5 0.64 5 Field Blank Footaoles: I 12 YK 0827987 12 0 0 0 100 0.5 0.64 Field Blank Footnotes: / Reporting Noles: (I) Fibers/cc cannot be calculated^ samdes (dTMMs) with no air volume. Analyzed by: Marvin BrotherZiP^ ‘ O \ - Da'® Analyzed: 8/28/98 Samples analyzed by NIOSH 740<)(A) MBTHOD^ESk #2,8/15/94; Limit of Detection = 5.5 fibers per 100 fields or 7 fibers / rnm2; This report relates ONLY to the sample analysis expressed / as fibers/iq nun of Olter area; ND = no Obeis observed; NA = Not Analjted; Walton - Beckett gradicule field area 0.00785 nun2; Duration in minutes; TWA = 8Hr TWA cilcularion assumes zero ezposute lor remainder of 8 hour period not sampled; Upper 95% Confidence Limit (Employer's Compliance Test) - Calculated as a one sided UCL to determine 95% certainty ol 3 compliance with the 0.01 fiber/oc standard; Esciaialed relative standard deviation: bitralab Sr « 0.270, lolerlab Sr= 0.450. ELAP #11480 0 U

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