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TEM Asbestos air sample results, NYC BOE, Apr 2002
Machine-extracted title · confidence 95%Laboratory data sheet for TEM asbestos analysis of an air sample collected from a New York City Board of Education site on April 18, 2002.
NYC-WTC_000176971Page image
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NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7455 Filter Type / Filter .Area: MCE 385 mm- Lab Sample #: 10 Grid Opening Size: 0.01124
Client Sample #: 10 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/18/02
Analysis Performed By: _ «==" MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or EDS (Nonadb No F B C M >=05 u >=5(j Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)
A"
r-h- rrn ! I
ri _________ Struct == > 0.5p > 5:1 Aspect Ratio Grid acceptance:
Positive oiffraction pattern properties ccnforming to <50% undissolved filter, overlapped or folded Totals iaooratory dentification crter a observed <10% particulate coverage >50% coverage ate least 20 untolded or ovenapped grid squares <5% 7= EDS soectrum conforming to aboratory holes or opaque areas p r i n identification criteria observed Chrysotile i j i ; A.MPHIBOLES Amphibole | ’ F = Single Fiber Amosite B = Bundle ;<3 fibers <1 fiber diameter apart Crocidolite Ambiguous ! i i C = Cluster (>3 Intersections) Anthophyllite I Non-Asbestos j Tremolite M = Matrix .Non-ldentified Actinolite NSC = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003471135 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176971
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NYC-WTC_000176971Source: NYC Law Department, mirrored locally
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