NYC-WTC_000212561

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet LIient Name: WC BOE Volnme (liters): 1920 Lab Group #: ;’742 Filter Type / Filter Area: MCE 385 mm^ Lab Sample#: Grid Opening Size: 0.01124

•Client Sample #: 08 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 (;RID ID: Accelerating Voltage: 100 KeV if Grid Openings: 4 Analysis Date: 5/14/02

Analysis Performed By: MARK PEYSAKHOV

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

---- <—

Slrucr = > 0 5)j > 5:1 Aspect Ratio Grid acceptance: /= Positive diffraction pattern properties conformint, to <50% undiss^ved filter, overlap^ orfokJed Totals aboratory identification criteria observed <10% particulate coverage >50% coverage ale least 20 unfolded or overlapped grid squares <5% F B C M >5m ■ '/= EDS spectrum conformintj to laboratory holes or opaque areas dentification criteria observed Chrysotile AMPHIBOLES Amphibole - -■ Single Fioer Amosite 0 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite U = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002867151

NYC-WTC_000212561