PCM fiber results lab report, Aug 1998

NYC 9/11 Public Portal Document

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SciLabJob#: 98-08-5975; r f Client Name: Applied Technology Services. Inc. ' ' Elias£_£flnti2sL_2^Si£EfiS£2BX-IECM)_Eih£E_Sesults A98113; Third Floor Finals Flow Air Fiber Fibers SciLab Client Dale Rate Duration Filtered Fields Fibers Density Cone. TWA Sample # Sample # / Location Collected (liters/min.) (min.) (liters) (Fibers/mm" ) (Fifaers/cc)

11 34081198-45 8/11/98 0 0 0 100 0.5 0.64 Held Blank Footnotes: /

12 34081198-46 8/11/98 0 0 0 100 0.5 0.64 Held Blank Footnotes: I Reporting Notes: (1) Fibers/cc cannot be calculatod<ft^antl^(or^Iafikh with no air volume. Analyzed by: Marvin Brothers^'U Tt* ----- Date Analyzed: 8/11/98 Samples analyzed by NIOSH 7400(A) MEtntSo, Issue #2, 8/15/94; Limit of Detection = 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 gradicule field area 0.00785 mm2; Duration in minutes; TWA = 8Hr TWA calculation assumes 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% certainty of compliance with the 0.01 fiber/cc standard; Estimated relative standard deviation: Intralab Sr = 0.270, Interlab Sr = 0.450. ELAP #11480

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