NYC-WTC_000197606

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1944 Lab Group #: 5999 Filter Type / Filter Area: MCE 385 mm' Lab Sample #: 13 Grid Opening Size: 0.01124 Area Examined: 0.04496 mm^ Client Sample #: 13 GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/30/01

Analysis Performed By: MARK PEYSAKHOV

GO. j Structure ' Structure Type • Length ID of Structure N or v EDS i (Nonadb , ■ No F B C M i >=05 p :>-5l Chrys Amphibole i Nonasb | Ambig/ND elements) i No Coord j <5p

>6

I ! ! i ! ( S i

Struct = > 0.5g 5:1 Aspect Ratio Grid acceptance: a/= Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totals laboratory identification critena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u 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 Non-Identified NSD = No Structures Detected

CITY_21MC100_003046252

NYC-WTC_000197606