NYC-WTC_000216342

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1952 Lab Group #: 6630 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 18 Grid Opening Size: 0.01124 Client Sample #: 18 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Y^/ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/11/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS No >=05 p :>=51J (Nonadb F B C M Chrys Amphibole Nonasb ■ Ambig/ND . No Coord <5p Elements)

■ ztz -IL— 4-F —

Struct = > 0.5 p _> 5: i Aspect Ratio Grid acceptance: '1= Positive flilfracoon osoe-n proreojes confonning to ‘50% undissolved inter, overtappeO 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 7= EDS spectrum confonning 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 Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002876828

NYC-WTC_000216342