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TEM Asbestos air sample results, NYC BOE, Nov 2001
Machine-extracted title · confidence 95%Technical record of transmission electron microscopy analysis for an asbestos air sample from a New York City Board of Education facility dated November 2001.
NYC-WTC_000185522Page image
OCR text
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: m'C BOE Volume (liters): 1936 Lab Group #: 5979 Filter Type / Filter Area: MCE 385 Lab Sample #: 1 Grid Opening Size: 0.01124
Client Sample #: 1 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20,000 ■ GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/28/01
Analysis Performed By: MARK PEYSAKHOV
Structure Type Length ID of Structure \ or V EDS GO^ Structure (Nonadb No F B C >=05 u >=5iJ Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)
a. ^"4?
Struct = > 0.5 p. > 5:1 Aspect Ratio Grid acceptance:
Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory iaentification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p ■/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES ' Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos j Tremolite M = Matrix Non-Identified j Actinolite NSD = No Structures Detected
CITY_21MC100_003106779
NYC-WTC_000185522
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NYC-WTC_000185522Source: NYC Law Department, mirrored locally
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