NYC-WTC_000230321

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 6673 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 2 Grid Opening Size: 0.01124 Client Sample #: 2 Area Examined: 0.04496 mm^

GRID BOX: A" Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/14/02

Analysis Performed By: MARK PEYSAKHOV

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

.3 -Si'

Struct = > 0.5(1 .> 5:1 Aspect Ratio 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 oveitapped grid squares <5% F B C M >5(J EDS spectrum conlorming 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-Identified Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003389063 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230321