NYC-WTC_000230176

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1960 Lab Group #: 6491 Filter Type / Filter Area: MCE 385 mm= Lab Sample #: 18 Grid Opening Size: 0.01124 Client Sample #: 18 Area Examined: 0.04496 inm’

GRID BOX: Magnification: 20,000 GRID ED : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/28/02

Analysis Performed By: . MAJRKPEYSAKHOV

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

/ <5^ J

struct = > 0.5|i _> 5:1 Aspect Ratio , Grid acceptance: a/= 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 >5|j ■7= 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 Tremolite M = Matrix Non-Identitled Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC1OO_OO3388876

SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230176