NYC-WTC_000230370

NYC 9/11 Public Portal Document

TEM~Asbestos fair) Count Sheet W Client Name: NYC BOE Volume (liters): 1952 Lab Group #: 6801 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #: 9 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 "grSTST^*^ - -7/ gZL Accelerating Voltage: 100 keV # Grid Openings: 4 Analysis Date: 2/24/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length . ID of Structure N or EDS No >=05 p (NonatJb F B C M >=51/ Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

W23

z/-----

1 &■

Struct = > 0.5p _> 5:1 Aspect Ratio‘s . Grid acceptance: 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 B C M >5p >/= EDS spectrum conforming to laboratory holes or opaque areas identification 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 Tremolite ■ M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003389157 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230370