NYC-WTC_000228255

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 7261 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 9 Grid Opening Size: 0.01124

Client Sample #: 09 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/30/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EOS (Nonadb No F B C M >-05 M >s5p Chrys Amphibole Nonasb Ambig/NO No' . Coord <5y Elemenis) i------------- -------- 1 **-*'Tr—

i -iI J

Struct - > 0.5)1 > 5:1 Aspect Ratio Grid acceptance: '/» Positive dWraction pattern properties conforming to <50% undlssolved filter, overlapped or folded Totals laboratory identification criteria otserved <10% parficulBte coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5p EDS spectrum conforming to laboratory holes or opaque areas identification 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-Matrix Actinolite !I Non-ldentified NSD - No Structures Detected

CITY_21MC100_0 02899632

NYC-WTC_000228255