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← Document results/DEP Box 36/400 CHAMBERS STREET Block: 16 Lot: 200 BIN: 1085774 Tribeca Park, 34 River Terrace
Document / 109 pages

Air sampling summary report, 400 Chambers Street, 2002

Machine-extracted title · confidence 90%

Cover letter and summary of ambient air sampling and cleanup activities at 400 Chambers Street from 2002.

NYC-WTC_000102767–000102875

Folder label: “400 CHAMBERS STREET Block: 16 Lot: 200 BIN: 1085774 Tribeca Park, 34 River Terrace

Page image
Scanned page image, NYC-WTC_000102827
OCR text

OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 1300 Lab Group #: 5992 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 7 Grid Opening Size: 0.01124 Client Sample #: 10 Area Examined: 0.06744 mm= GRID BOX: Magnification: 20,000 GRID ID: G' ! = Accelerating Voltage: 100 KeV 4 Grid Openings: 6 Analysis Date: 11/29/01

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS No F I 8 C M >=05l >=5N Chrys Amphibole Nonasb Ambig/ND (Nonadb No Coord <Su Elements)

2 cs

Struct => 0.5µ > 5:1 Aspect Ratio Grid acceptance: 4= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F 1= EDS spectrum conforming to laboratory holes or opaque areas B C M >5u dentification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M =Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected

NYC-WTC 000102827

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NYC-WTC_000102827Source: NYC Law Department, mirrored locally

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