NYC-WTC_000212497

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: N^7C BOE Volume niters): 1920 Lab Group #: 7512 Filter Type / Filter Area: MCE 385 mm^ Lab Sample#: 10 Grid Opening Size; 0.01124

C lient Sample #: 10 Area Examined; 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/23/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor V EDS {Nonadb No F B C M >=05 (J >=5|J Ctirys Amphibole Nonasb Ambig/ND No Coord <5m Elements)

—e.-

Struct == > 0 Sp >5:1 Aspect Ratio Grid acceptance: \ - Positive diffraction pattern proijerties conforming to <50% undBSOived filter, overlapped or folded Totals leboratoiy identification criteria observed < 10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5y \ - EOS spectrum conforming to laboratory holes or opaque areas ioentilication critena 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-ldentified Actinolite NSD = No Structures Detected

CITY_21MC1OO_OO2866733

NYC-WTC_000212497