NYC-WTC_000229963

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filters): 1936 Lab Group #: 7122 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 7 Grid Opening Size: 0.01124 Client Sample #: Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/18/02

Analysis Performed By: PP' ROMAN PEYSAKHOV

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

7^^ Zf

Struct = > 0.5g > 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 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 T remolite M = Matrix - Actinolite Non-Identified NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC1OO_OO3388542

SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000229963