NYC-WTC_000212951

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (iiters): 1928 Lab Group #: 8225 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: S Grid Openiiiy Size: 0.01124

Client Sample #: 08 Area Examined: 0.04496 mm^

GRID BOX: Mami i n cation: 20,000 GRID ID: Acceleratiim V<> I tage; 100 KeV # Grid Openings: 4 Analysis Date: 6/23/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. structure Structure Type Length ID of Slructire Nor v EDS (Nonadb No F 8 C M >=05 u >=51J Ctirys Amphibole sb Ambig/ND No loord <5p Elements)

'Z,

Struct = > 0.5h > 5:1 Aspect Ratio Grid acceptance: V = Positive diffraction pattern properties confomning to <50% undissolvad fitter, overtapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5m •J- EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed ChI■^ SOI' AMPHIBOLES Amp lib' F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambi ',u C = Cluster (>3 Intersections) Anthophyllite Non-Asbcsi> Tremolite M = Matrix Actinolite Non-Ideniifio NSD = No Structures Detected

CITY_21MC100_002867700

NYC-WTC_0002 12951