NYC-WTC_000198294

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet ClientNam^ NYC BOE Volume (liters): 1805 Lab Group #: 7823 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 15 Grid Opening Size: 0.01124

Client Sample #: 15 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRIDID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/21/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure NorT EDS No (Noradb F B C M >=05 pi Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

______ Struct = > 0.5m > 5:1 Aspect Ratio Grid acceptance: V= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

EDS spectrum conforming Io laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas [F B C M >5m identification criteria observed Chrysotile j AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 liber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003029912

NYC-WTC_000198294