TEM Asbestos air sample results, NYC BOE, Dec 2000

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 9210 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 8 Grid Opening Size: 001124

Client Sample #: to Area Examined: 0 04496 rntn-

GRID BOX: Magnification: 20,000 GRID ID: X? ?- Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/26/200

.Analysis Performed By: MARX PEYSAXHOV

GO Struclure Structure Type Length ID of Structure or V EOS No (Nonadb I F B C M >=05 p :>=51J Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

T 3 ^3’

t i I

I T

I T I

t-’hoto No (from 1 in a asbestos containing samples) Gnd acceptance Struct = > 0 5p >51 Aspect Ratio <50% undissolved filter, overiapped or folded Totals ■sf'= Positive diffraction pattern properties conforming to <10% oamculate coverage >60% coverage ate laboratory identification cnteria observed least 20 uniolded or overlaoped grid squares >5p <5% holes or opaque areas F B C M v = EDS spectrum conforming to laboratory Identification criteria observed Chrysotile ! amphiboleF"! = Single Fioer Amphibole I Amosite B = Bundle (<3 fibers <1 fiber diameter apart I Crocidolite Ambiguous C = Cluster (>3 Intersections) I Anthophyllite i Tremolite Non-Asbestos M = Matrix j Actinolite Non-Identified MED = No Structures Detected

CITY_21MC100_003057939

NYC-WTC_000196857