PCM fiber results lab report, NYC Law Department, Mar 2002

NYC 9/11 Public Portal Document

Scil^fcob#; 202031113 P 1 of 1 ClienTOame: TRC Environmental Corporation Phase Contrast Microscopy (PCM) Fiber Results 35052-0000-00007; New York City Law Department; 100 Church Street / AMBIENT Flow Air Fiber Fibers SciLab Client Rate Duration Filtered Density Cone. Fields Fibers TWA Sample # Sample # / Location Collected (liters/min.) (min.) (liters) (Fibers/mm"^ ) (Fibers/cc)

01 GS-3/1/02-ASB-0312 3/1/02 5 240 1200 100 2 2.55 < 0.002 WS 2-101 02 GS-3/1/O2-ASB-O313 3/1/02 5 240 1200 100 5 6.37 < 0.002 WS 2-192 03 GS-3/1/02-ASB-0314 3/1/02 5 240 1200 100 8 10.19 0.003 RM 2-196 04 GS-3/1/02-ASB-0315 3/1/02 5 240 1200 100 4 5.10 < 0.002 RM 2-108 05 GS-3/1/02-ASB-B1 3/1/02 0 0 0 100 0.5 0.64 Blank Footnotes: 1 06 GS-3/1/02-ASB-B2 3/1/02 0 0 0 100 0.5 0.64 Blank Footnotes: 1 Reporting Notes: (1) Fibers/cc cannot be J M for s; es ^s) with-Jio air volume. Analyzed by: Anthony Hinton /_____ L __ ; Date Analyzed: 3/1/02 Samples analyzed by NIOSH W 0(A) k ithod, Issui ^15/94;\jniit of Detection^ 5.5 fibers per 100 fields ocl fibere/nini2: This report relates ONLY to the sample analysis expressed as fibers/sq mm of filter area: ND=No fibers observed: NA= Not Analyzed; Walton-Beckett gratide field tea = O.o/ ^85 fiHiiZ; TWA = 8 Hr TWA calculation assumes zero exposure for remainder of 8 hr period not sampled: Upper 95% Confidence limit (Employers Compliance Test)* Calculated as a one sided UCL to determine 93% certainty of compliance with the 0,t)l fiby/cc standard: Estimated relative standard deviation: Intralab Sr=O.4C3, Interlab Sr=0.45, New York samples (NYSDOH ELAP Lab # 11480): National Institute of Standards and Technology Accreditation requirements mandate that this report must not be reproduced except in full without the approval of the laboratoiy. AIHA # 102843.

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