PCM fiber results lab report, Sept 1998

NYC 9/11 Public Portal Document

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SciLabJob#: 98-09-6791 CUent Name: Applied Technology Services, Inc. s\ Phaise Contrast Microscopy fPCM) Fiber Results A98113; DURINGS Q.* Flow /kir Fiber Fibers SciLsb Client De>£ Rate Duraiicn Filtered Density Cone. TWA Sample * Sample If / Localion CoUocicd (lilers/min.) (min.) (liters) (Fibers/mnt ) (Fibers/cc) § s fxj 01 29 092298 01 9Z22/98 DUR/lOtb Roor on We»l Broidway & BarUey St. Side ISWA 9/22/98 5

5 270

270 1350

1350 100

too 4 2 2.55

5.10 < 0.002

< 0.002 02 29 092298 02 r<j DUR/IOth Roor on West Broadway A Barkley St. Side OSWA n.3 29 092298 03 9/22/98 5 270 1350 100 1 1.27 < 0.002 DUR/l I ih Floor on W«t Broadway & BarUey Si. Side ISWA 04 29 092298 04 9/22/98 5 270 1350 100 4 5.10 < 0.002 DUR/l 1th Roor on Wen Broadway * BarUey St. Side OSWA 05 29 092298 OS 9/22/98 5 270 1350 100 OS 0.64 < 0.002 DUR/12th Roor on West Broadway & BarUey St. Side ISWA 06 29 092298 06 9/22/98 5 270 1350 100 0.5 0 64 < 0.002 DUR/I21h Roor on West Broadway Ik BarUey SI. Side OSWA 07 29 092298 07 9/22/98 5 270 1350 100 5 6.37 < 0.002 tn nUR/13th Roor on West Broadway & BarUey St Side ISWA DO 5 08 29 092298 08 9/21/98 5 270 1350 100 2 2.55 < 0.002 u DUR/13th Floor on Weal Broadway & Barkley St Side OSWA t 09 29 092298 09 9/22/98 0 0 0 100 0.5 0.64 z Blank Foolnoles: I QJ 29 092298 010 9/22/98 0 0 0 100 0.5 0.64 Blank Footootca: / Reporliag Notes: (I) Fibers/cc cannot be calculated for sampl^otjUanks) with no air volume. Analyzed by; Anthony T. Hinton_______ vT 'P* ____________ ; Date Analyzed: 9/23/98

o a Samples analyred by NIOSH 7400(A) METHOD. luee #2, 8/15/94; Limit of Detection = 5.5 fibers per 100 fields or 7 fibers / mn2; This report telales ONLY lo the sample analysis expressed as fibers/sq mm of filler area; ND « no fibers observed; NA = Noi Analyzed; Walton - Beckett gradicule field area 0 00785 nim2; Duration in minutes; TWA = 810 TWA calculaiion assumes H 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% certainly of K compliance with the 0.01 fibet/cc standard; Estimaied relative standard deviation: tniraiab Sr * 0.270, Inicriab Sr * 0.450. ELAP 811480 I

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