NYC-WTC_000201884

NYC 9/11 Public Portal Document

TEMAsbestos (air) Count Sheet Client Name: NYC BOL Volnme (liters): 1840 Lab Group #: 6584 Filter Type / Filter Area: MCE 385 mnr Lab Sample #: 7 Grid Opening Size: 0,01124 Client Sample #: 2 Area Examined: 0.04496 mm’ GRID BOX: Magnifieation: 20,000 GIUDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/7/02

Analysis Performed By: ' ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or N EDS 1 No (Nonadb F B C M >=05P ) Chrys Amphibole Nonasb Ambig/ND Elements) No Coord i <5p I

A/^

z f / r" /L

- Struct = > 0.5|j .>5:1 Aspect Ratio Grid acceptance:

r^ositivc ditraction pattern properties conforming to <50% undissolved filter, overlapped or'folded Totals laboratory ioentification criteria ooserved <10% particulate coverage >5C% coverage ate least 20 unfolded or oveitacped grid squares <5% F B C M >5p ■/= EDS spectrum conforming to laboratory holes or opaque areas identHtcation criteria observed Clrysotile FAMmiBOLES 1 Amnliibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diam.etei apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003269402

NYC-WTC_000201884