PCM fiber results lab report, Sept 1998

NYC 9/11 Public Portal Document

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SciLabJob#: 98*09-5453 Client Name: Applied Technology Services, Inc. JfiT Phase Contrast Microscopy (PCM) Fiber Results A98113; 80 West Broadway Durings sI <0 Air Fiber Fibers SciLab Client Rale Duration FUtered picids Fibers Density Cone. TWA Sample # Samite # / Location Collected (liters/min.) (min.) (liters) (Fibers/mm ) (Fibers/cc) ui

01 34090498-13 9/4/98 0 0 0 109 0.5 0.64 8 Held Blank Paotootes: /

02 34090498-14 9/4/98 0 0 0 100 0.5 0.64 Held Blank Footnotes! / 03 34090498-15 9/4/98 5 480 2400 100 6 7.64 0.001 CD n »—■ By the Entrance To Decon m 2 04 34090498-16 9/4/98 3 480 2400 100 7 8.92 0.001 Ti By the Waste Decon Exit 05 34090498-17 9/4/98 3 480 2400 100 7 8.92 O.OOI I North - East Side a u 06 34090498-18 9/4/98 5 480 2400 100 8 10.19 0.002 North West Side 07 34090498-19 9/4/98 5 480 2400 too 10 12.74 0.002 Outside the Building 08 34090498-20 9/4/98 5 480 2400 NA North - South Corridor (SAMPLE NOT SUBMITTED) Reporting Noles: . (1) Fibert/cc cannot be calculated fQrjamplc^.torblin)tST*itli no^ volume. Analyred by: Marvin Brothert X—: Date Analyzed; 9/5/98 Samples analyzed by NIOSH 7400(A) METHOD, Issue 82, 8/15/94; Limit of Detection = 5.5 fibers per 100 fields or 7 flben / nun2; This report lelales ONLY to the sample analysis expressed as fibcri/sq nun of filler area; ND » no fibers observed; NA = Not Analyzed; Walton - Beckett gradicule field area 0.00785 inni2; Duration in minutes; TWA = 8Hr TWA calculation assumes zero expomire for remaindet of 8 hour period not sampled; Upper 95% Coafidence Limit (Employer's Compliance Test) - Calculated as a one sided UCL Io determine 95% certainly of compliance sviih the 0.01 fiber/cc standard; Eadmaied relative sundard deviation: Intralab Sr s 0.270, Interlab Sr = 0.450. ELAP #11480 ' o H k; I I N)

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