NYC-WTC_000229316

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 8150 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 18 Area Examined: 0.04496 mm’ GREP BOX: Magnification: 201553 Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/17/02 —------ — Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type length IDofSbucture Norv EDS (Nonadb No F B C M >=05 u >=5p Chrys Amphfcole Nonasb Ambig/NO No Coord <5iJ Etemenis)

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Struct = > 0.5g >5:1 Aspect Ratio Grid acceptance: 4- Positive dtf&action pattern properties confarming to <50% iindissotved filer, overtapped or folded Totals laijoratory IdentriicattQO criteria observed <10% parlicttlalB coverage >50% cowraga ata least 20 unfolded or overtapped grid squares <5% F B C M >5p 1/= EOS spectrum conforming to laboratory hoiea or opaque areas identificatfon crrtena observed Chrysotile AMPHIBOEPS ; Amphibole F = Single Fiber Annosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identifled USD = Mo Structures Detected

CITY_21MC1OO_OOO491952 NYC-WTC_000229316