SciLa #; 202023409 * “S'^i
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Client Name: TRC Environmental Corporation
Phase Contrast Microscopy fPCM) Fiber Results
35052-0000-00007; New York City Law Department; 100 Church Street
Flow Air Fiber Fibers
SciLab Client Date Rate Duration Filtered Density Cone.
Fields Fibers TWA
Sample # Sample # / Location Collected (litcrs/min.) (min.) (liters) (Fibers/mm ) (Fibers/cc)
01 GS-2/23/02-STEL-0618 2/23/02 2 30 60 100 2 2.55 ,• < 0.045
Loading Dock, East Side
02 GS-2/23/02-STEL-0619 2/23/02 2 30 60 100 1.5 1.91 < 0.045
Loading Dock, West Side
03 GS-2/23/02-STEL-0620 2/23/02 0 0 0 100 0.5 0.64
Blank Footnotes: /
04 GS-2/23/02-STEL-0621 2/23/02 0 0 0 100 0.5 0.64
Blank Footnotes: /
Reporting Notes:
(1) Fibers/cc cannot be calculated Bar st i) with no air volume.
Analyzed by: Tatyana Grimchak__ “ Date Analyzed: 2/23/02
Samples analyzed by NIOSH 7400(A) &th^Jjsd®»2r8/15/94: Limit of Detections 5.5 fibers per 100 fields or 7 fibers/ram2: 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 (let ( 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 O.OI fiber/cc standard: Estimated relative standard deviation; Intralab Sr=0.403, Interlab Sr=0.43, 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 ftill without the approval of the laboratory. AIHA # 102843,
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NYC-WTC_000174366
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000174366Source: NYC Law Department, mirrored locally