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← Document results/DEP Box 48/22 RIVER TERRACE Block: 16 Lot: 190 BIN: 1085929 Park Place, Warren Street
Document / 49 pages

Air quality analysis report, 22 River Terrace, Sep 2001

Machine-extracted title · confidence 95%

Laboratory report on ambient air samples collected at 22 River Terrace indicating levels below recommended asbestos criteria.

NYC-WTC_000120885–000120933

Folder label: “22 RIVER TERRACE Block: 16 Lot: 190 BIN: 1085929 Park Place, Warren Street

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Scanned page image, NYC-WTC_000120921
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NYC 9/11 Public Portal Document

SciLab Job #: 201093000 Page 2 of 2 Client Name: GCI Environmental Advisory, Inc. Phase Contrast Microscopy (PCM) Fiber Results NO1-B-4088; Rockrose Development Corp.; 22 River Terrace Flow Air Fiber Fibers SciLab Client Date Rate Duration Filtered Fields Fibers Density Conc. TWA Sample # Sample #1 Location Collected (liters/min.) (min.) (liters) (Fibers/mm 2 ) (Fibers/cc)

14 I I p 09/25 14 9/25/2001 15 83 1245 100 5 6.37 < 0.002

P 15 b9/2515 9/25/2001 15 115 1725 100 2 2.55 < 0.002 Gym (AQ) Reporting Notes: (1) Fibers/cc cannot be calcul' Lior . nlples >lanks) with no air volume. Analveed hs Talvasa Grinxh,tk -- ' ';~~ ; Date Analvied: 9/251200(

S r nvles anahzed by NIOSI l 74€/S p Medutt'. hue #2, 8115/94; 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 fi lter area; ND = no fibers observed; NA = not anal}zed; Walton-IIccketl IradictiI, he'd area )0)785 mm2; TWA =9 Hr TWA calculation assumes zero exposure for remainder of R hr period not sampled; Upper 95% Confidence limit (Employers Compliance Test). Calculated as a one sided UCL to determine 954, ccnainIy at eonq:li. s e with Sc 0.01 fherlcc standard; listimated relative standard deviation: Interlab Sr=0.405, Interlab Sr=0.45, New York samples (NYSDOH ELAP lab # 11480); National Institute of Standards and Technology

NYC-WTC 000120921

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NYC-WTC_000120921Source: NYC Law Department, mirrored locally

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