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

NYC 9/11 Public Portal Document SciLab^#: 202023229 UI

Client Name; TRC Environmental Corporation HiaseJCoiitraslMicrosccyBy{POJlFiberJResults 35052-0000-00007; New York City Law Department; 100 Church Street (OSHA) Flow Air Fiber Fibers SciLab Client Rate Duration Filtered Density Cone. TWA Fields Fibers Sample # Sample # / Location Collected (Hters/min.) (min.) (liters) (Fibers/mm ) (Fibers/cc)

01 GS-2/21/02-STEL-0614 2/21/02 2 30 60 100 2 2.55 < 0.045 Rame) G. 02 GS-2/21/02-STEL-0615 2/21/02 2 60 120 100 1 1.27 < 0.022 Jose A. 03 GS-2/21/02-STEL-0616 2/21/02 0 0 0 100 0.5 0.64 Blank Footnotes: / 04 GS-2/21/02-STEL-0617 2/21/02 0 0 0 100 0.5 0.64 Blank Footnotes: 1 Reporting Notes: (1) Fibers/cc cannot befaffllmlaW for ^drapes (or blanks) with no air volume. Analyzed by; Marvin Brother! V ) VV. pjtg Analyzed; 2/22/02 Samples analyzed by NIOSH 7400(A) Method, Issue #2, 8/15/94; Limit of Detections 5.5 fibers per 100 fields or 7 fibers/mm2; 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 graticle field area = 0.00785 mm2; 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 95% certainty of compliance with the 0.01 fiber/cc standard; Estimated relative standard deviation; Intralab Sr=0.405, Interlab Sr-0.45, New York samples (NYSDOHELAP 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 laboratory. AIHA # 102843.

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