NYC-WTC_000228349

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6409 Filter Type / Filter Area: MCE 385 mm- Lab Sample #; 8 Grid Opening Size: 0.01124

gUent gampie#: 08 Area Examined: 0.04496 mm- GRID BOX; Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # GridOoenings; 4 Analysis Date: 1/23/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Sbucture N or V EOS No {Nonadb F B C M >=05 J :>=5p Chrys Amphitjole Nonasb Ambig/ND No .Coord <5m Elements)

—* I

1-

..

Struct = > O.Sp > 5; 1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <»* unsolved filter, overiappad or folded Totals taboraforv Identification criteriaHl- observed K <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5m n/s EDS spectrum conforming to laboratory holes or opaque areas identificato criteria observed Chrysotile AMPHIBOLES ! Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Mabix Actinolite Non-Identified NSO = No Structures Detected

CITY_21MC100_002900024

NYC-WTC_000228349