PCM fiber results lab report, Oct 1997

NYC 9/11 Public Portal Document

( iLabJob#: 10-97-5374 licnl Name: Applied Technology Services, Inc. Phase Contrast Microscopy (PCM) Fiber Results 0.'

A97195; Finals IWA/OWA d P .Air Fiber Fibers b Client Duration tensity Cone. Filtered Fields Fibers TWA Sample # Z Location (min.) (Fibers/mm ) (Fibers/cc) (liters) 29 100797 06 10/7/97 0 0 0 100 05 0 64 Blank Fo«lna(cs: / 29 100797 07 10/7/97 15 80 1200 100 7 8.92 0 001 RN- lit R Nonh Wet Column IWA 29 100797 08 10/7/97 15 80 1200 100 2 2.55 < 0 002 RN HI R North Wci Column OWA 29 100797 09 10/7/97 15 80 1200 100 ■4 5.10 < 0.002 RN- HI Ft South Wcl Column IWA 29 100797 10 10/7/97 15 80 1200 100 5 6..17 < 0 002 RN- lit Fl South Wei Column OWA orting Notes: I Fibers/cc cunnol be calculated fot samples, (or hbinks) wjlh'no air volume. Anal)-zed by; Fred Corirossi______ t I’**® Analyzed; 10/7/97 Samplci analyzed by NIOSH 7400(A) kBtHOD. hsue #2. 8/15/94; Limit of Detection =55 Fibers per 100 field! or 7 Obers / mtn2; This report relates ONLY to Hie sample analysis expresicd as libers/sq mm of filler area; ND = no Obers observed; NA = Nor Analyzed, Wallun - Beckett giaJicule field area 0.00785 mm2; Duration in minutes; TW.A = 8Ilr TWA ralriitalirin assumes zero exposure for remaindei of 8 hour period not sampled; Upper 95% Confidence Limit (Employer's Comptiiuice Tc.sl) - Calculated as a one sided UCL lo determine 95% certainly of compliance with the 001 fiber/cc standard; Eslimaled relative standard deviation; Intralab Sr = 0.270. Inletlab Sr = 0.450

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