NYC-WTC_000192188

NYC 9/11 Public Portal Document

TEMAsbestosfaifLCountShe^ Client Name: NYC BOE Volume (liters): 1936 Lab Group #: 7356 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: 5 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/8/02

Analysis Performed By: MARK PEYSAKHOV

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

/i X

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: '/= Posibve diffraction pattern properties conforming to <50% undissolved filter, overlapped 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 >5m >/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos ; T remolite M = Matrix Non-ldentified > Actinclite NSD = No Structures Detected

CITY_21MC100_003092358

NYC-WTC_000192188