PCM fiber results lab report, Aug 1997

NYC 9/11 Public Portal Document

< ( I LabJob#: 08-97-6423 lent Name; Applied Technology Services, Inc Phase Contrast Microscopy (PCM) Fiber Results Backgrounds Bate Flow Duration Air Fiber Fibers > Client Density Cone. TWA Filleted Fieius Pibcrg Sample # / Location Collected , (min.) (Fibers/mai * ) (Fibcis/ec) (Iileis/min.) (liters) 29 081997 09 8/19/97 15 80 1200 100 7 8.92 0.003 Bkg-lfl n WtsI Middle of Area ISWA 29 081997 10 8/19/97 15 80 1200 100 4 5 10 < 0.002 Bkg-lsl Pl-West South Corner Area ISWA 29 081997 II 8/19/97 15 80 1200 lOO 5 6.37 < 0.002 Bkg-lsi Fl Noith Baal Comer OSWA 29 081997 12 8/19/97 15 80 1200 1O0 4 5.10 < 0.002 Bkg-lil Fl-Noflh West Comer OSWA 29 081997 13 8/19/97 15 80 1200 100 3 3.82 < 0.002 Bkg- III n Nortfa Wesi Middle of Loading Dock OSWA 29 081997 14 8/19/97 15 80 1200 100 3 3 82 < 0.002 Bkg-lsl n West South Corner OSWA 29 081997 15 8/19/97 15 80 1200 100 7 8.92 0.003 Bkg-lsl H South East Comer OSWA 29 081997 16 8/19/97 0 0 0 100 0 5 0 64 Blank Footnotes: / 29 081997 17 8/19/97 0 0 0 100 0.5 0 64 Blank Footnotes: / lortlng Noles: 1 Fibeis/cc cannot be calculated for samples (nr ^uks) with Analyzed by: Pllex Zalyaznik r ; Dale Analyzed: 8/22/97 RL/kP # 11480. Samplei analyzed by NIOSII 74O(XA) MEHIOD, Blue #2. 8/15/94; Litnl of Deteclion a 5.5 fibers per 100 fields or 7,fibers / min2: This report relates ONLY to the sample analysis expressed as (ibers/sq mm of fillet area; ND = no fibers ohsersed; NA = Not Analyzed; Walton - Bccketl giadicule field area 0 00785 mm2; I Jut alien in iiiinute,s; TWA = Sllr TWA calculation astumei o zero exposure for remainder of 8 hour period not sampled; Upper 95% Confidence Limit (Employer's Compliance I'esl) - Caleulaled as a one sided UCL to ticleimine 95% ceitainiy of H compliance with the 0.01 fiber/cc ilindatd; Estimalcd relative standard deviation: Intralab St = 0.270, Inlerlab Sr = 0.450. Phase Contrast Microscope: Olympus, Model CH‘2, K I to

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