NYC-WTC_000225845

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters'): 1944 Lab Group #: 6229 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 1 Grid Opening Size: 0.01124 ■ Client Sample #: Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/30/01

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS ■ No (Nonadb F B C M >=05 (J Chrys Amphibole Nonasb Ambig/ND No Coord <5 (J Elements)'

// A

Struct = > 0.5u >5:1 Aspect Ratio Grid acceptance: >/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria 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 Cltrysotile AMPHtBOLES 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 Non-Idenrified Actinolite NSD = No Structures Detected

CITY_21MC100_000622598 NYC-WTC_000225845