PCM fiber results lab report, Aug 1997

NYC 9/11 Public Portal Document

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Client Name: Applied Technology Services, Inc. Phase Contrast Microscopy (PCM) Fiber Results A97195; FH 2nd Fl. DURINGS Flow Air Fiber Fibers iLab Client Date Duration iple # (liUtrimin.) Fillercd Fields Fibers Density Cone. lyvA Sample # / Location (liters) {Fibers/mm ) (Fibers/cc) I 86-082897 01 8/28/97 0 0 0 too 0.5 0.64 Field Blank Footnotca: I 2 86-082897-02 8/28/97 0 0 0 too 0.5 0.64 Field Blank Footnoles! / 3 86-082897-03 8/28/97 5 240 1200 too 36 45.86 0.015 East Side Of Tent IWA -DUR 4 86-082897-04 8/28/97 5 240 1200 too 29 36.94 0.012 West Side Of Tent IWA - DUR 5 86-082897-05 8/28/97 5 240 1200 too 9 11.46 0.004 Al Exhaust of AHJ OWA - DUR 5' 86-082897-06 8/28/97 5 160 800 NA East Side Of Tent IW.A - DUR Foolnatei: 2 7 86-082897-07 8/28/97 5 160 800 NA West Side Of Tent IWA - DUR Foolnolci:' 2 .1 86-082897-08 8/28/97 5 160 800 too 4 5.10 < 0.003 At Exhaust of AFU OWA ■ DUR eporting Notes: (I) Fibers/cc cannot be calculated for sainplet (or blanks) with no air volume. (2) Analyst was unable Io quantify fiber concentration because of :i1oading of particulale material on the filter. Analyzed by: Rlex Zalyaznik f- > Date Analyzed: 8/28/97 BLAP # 11480. Sainplei analyzed by NIOSII 7400(A) METHOD, Issue 82, 8/15/94; Limit of Detection = 5.5 fibers per 100 fields or 7 fibers / mm2; This report lelates ONLY to the sample analysis expressed as fibers/sq ram of filter area; ND = no fibers observed; NA = Not Analyzed; Walton - Beckett gradlcule field area 0.00785 mni2; Duration in minutes; TWzA = Sllr TWA calculation assumes zero exposure for remainder of 8 hour period not sampled; Upper 95% Confidence Limit (Employer's Compliance Test) - Calculated as a one sided UCL to determine 95% ceilaiiity of compliance with the 0.01 fiber/ce standard; Estimated relative standard deviation; Iniralab Sr = 0.270, Intedab Sr = 0.450. Phase Contrast Microscope: Olympus, Model ClI-2. o H

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