NYC-WTC_000189595

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1832 Lab Group #: 7220 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: 08 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/26/02

Analysis Performed By: MARK PEYSAKHOV

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

^3 3

Struct = > ().5p > 5:1 Aspect Ratio Grid acceptance: '/= Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

^1= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% F B c M >5u 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_003087505

NYC-WTC_000189595