TEM Asbestos air sample results, WC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1936 Lab Group #: 6066 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: J Grid Opening Size: 0.01124 Client Sample #: Area Examined: C.04496 mm"

GRID BOX: 02^ Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/9/01

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS No (Nonadb F B C M >=05 p >=5u Chrys Amphibole Nonasb Ambig/ND No Coord j <5tJ Elements)

z (9 gi 7 Zc

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

CITY_21MC100_003104636

NYC-WTC_000184099