NYC-WTC_000200394

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE yoluniejliter£12 1848 Lab Group #: 7997 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/8/02

Analysis Performed By: '•----- '■ MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS No (Nonadb . F B C M >=05 p •=5m Chrys Amphibole Nonasb Ambig/ND 7 : i No ) ‘ Coord <5|j Elements)

■ '7 7

■ I

L ■ f

Struct = > 0.5)1 _> 5:1 Aspect Ratio Grid acceptance: •/= Positive diffraction pattern properties confomring to undissolved filter, overlapped or folded. Totals • t laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M ■ ■

a/= EDS spectrum conforming to laboratory holes or opaque areas —— i . |. Identification criteria observed Chrysotile AMPHIBOLBS Amphibole - = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous 2 = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified USD = No Structures Detected

CITY_21MC100_011274855

NYC-WTC_000200398