TEM Asbestos air sample results, NYC BOE, Apr 25 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Vo Ip me (liters): 1832 Lab Group #: 7539 Filter Type 1 iiter Area: MCE 385 mm^ Lab Sample #: 7 Grid f iiiiig Size: 0.01124

Client Sample #: lO Alt 1 Examined: 0.04496 mm^

GRID BOX: A; a unification: 20,000 GRID ID: Accelei nri;ijT Voltage: too KeV # Grid Openings: 4 - ilMsDatty: 4/25/02

Analysis Pei formed By; MARK PEYSAKHOV

GO. Structure Structure Type Length ■ructure N or EDS (Nonadb No F B C M =5|J Chrys Amphi: "lona.il) Ambig/NO No Coord <5p Elements)

L

J

Struct = > 0.5n >5:1 Aspect Ratio Gnd acceptance:

a/Positive diffraction pattern properties confer:': ig to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed oil Ie AMPHIBOLES Fule F = Single Fiber Amosite lulls B = Bundle (<3 fibers <1 fiber diameter apan Crocidolite C = Cluster (>3 Intersections! Anthophyllite Sr.I .'Sins Tremolite M = Matrix Nor .fed Actinolite NSD = No Structures Detected

CITY_21MC100_003102065

NYC-WTC_000183070