NYC-WTC_000211317

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 8228 Filter Type / Filter Area: MCE 385 Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 GRID BOX: Masnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 6/23/02

Analysis Performed By: ROMAN PEYSAKHOV

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

i

Struct = > 0 5p > 5:1 Aspect Ratio Gnd acceptance: <= Positive diffraction pattern properties conforming to *50% undssolved filter, overtepped or folded Totals xi*!*•Sri'S rsKrsr>n•/vrj ^10% PSfllCUlatS COV&fSQC ^50% COVBrSQG BtS laboratory identification criteria observed least 20 unfolded or overiapped grid squares <5% F B C M >5p '/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile amphiboles I Amphibole F = Single Fiber , Amosite \ B = Bundle (<3 fibers <1 fiber diameter apart i Crocidolite . ■ Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002863927

NYC-WTC_000211317