TEM Asbestos air sample results, NYC BOE, Aug 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1920 Lab Group #: 8759 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 14 Grid Opening Size: 0 01124 Client Sample #: 14 Area Examined: 0 04496 mm- GRID BOX- /svY Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: S/25/02

Analysis Performed By: / <// — ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or V EDS No (Nonadb F B C M >=05 u — >=51J Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

r

W2 5 A 3

Struct = > Cl Op >5 I Aspect Ratio Grid acceptance Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory ideniification cntena observed <10% particulate coverage >50% coverage ale least 20 unfolded or overlapped gnd squares <5% F B C M >5u 9= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile I AMPHIBOLES Amphibole F = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matnx Non-Identified Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC1OO_OO34313O9

SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175514