NYC-WTC_000229003

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client _NYC BOE Volume ftiters): 1816 Lab Group #: 7807 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 14 Grid Opening Size: 0.01124 Client Sample #: 16 Area Examined: 0 04496 GRID BOX: //jCT' Magnification: 20,000 GRID ID: ggr? Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/20/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length IDofSbucture N or EOS (Nonadb ; No F B C M >=05 u Chrys Amphibole Notsasb Amfaig^O « No Coord Etemenls) ---------------- 1

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i . I Struct - > O Sp >511 Aspect Ratio Glid acceptance: V= Positive diffraction pattern properties conforming to <50% unr)is8o^ed filter, overlapped or folded Totals laboratory identiliceticn critena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C EOS spectrum conforming to taooratoiy holes or opaque areas ---- )----- identification critena observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite S “ Sundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C - Cluster (>3 Intersectiors) Anthophytlite Non-Asbestos T remolite M = Matrix Actinolite Non-tdentified NSD = No Slructures Detected

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NYC-WTC_000229003