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Asbestos air fiber results, 100 Church Street, Oct 2001

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Lab report from TRC Environmental Corporation showing PCM microscopy fiber results for air samples at 100 Church Street.

NYC-WTC_000174370
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NYC 9/11 Public Portal Document

Sci #: 202032133 Pag of 1 Client Name: TRC Environmental Corporation Phase Contrast Microscopy (PCM) Fiber Results 35052-0000-00007; New York City Law Department; 100 Church Street/OSHA Flow Air Fiber Fibers SciLab Client Date Rate Duration Filtered Density Cone. TWA Fields Fibers Sample # Sample # / Location Collected (liters/min.) (min.) (liters) (Fibers/mm^ ) (Fibers/cc)

01 GS-3/11/02-STEL-0342 3/11/02 2 30 60 100 4 5.10 <0.045 Ramon Mante 02 GS-3/11/02-STEL-0343 3/11/02 2 30 60 100 2 2.55 < 0.045 Luis Bueno 03 GS-3/11/02-STEL-0344 3/11/02 0 0 0 100 0.5 0.64 Field Blank Footnotes: / 04 GS-3/11/02-STEL-0345 3/11/02 0 0 0 100 0.5 0.64 Field Blank Footnotes: / Reporting Notes: (1) Fibers/cc cannot be Ci ManbOwith no ainvolume. Analyzed by: Anthony Hinton / . Tumi! Allalyz'ej: ^12/02 Samples analyzed by NIOSH of Detections 5.5 fibers per 100 fields or 7 fibers/mni2: This report relates ONLY to tlie sample analysis expressed as fibers/sq mm of filter area: ND=No fibers observed: NA= Not Analyzed: Walton-Beckett graticle held area = 0.0( '85 mmi 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 0,1 , fiber/cc\standard: Estimated relative standard deviation: Intralab Sr=0.405, Interlab Sr=0.45, New York samples (NYSDOH ELAP Lab # 11480): National Institute of Standards and Technology Accreditation requirements mandate that this report musTnot J^eproduced except in full without the approval of the laboratory. AIHA # 102843.

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NYC-WTC_000174370

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NYC-WTC_000174370Source: NYC Law Department, mirrored locally

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