NYC-WTC_000222400

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYCBDE Volume (liters): 1848 Lab Group #: 7890 Filter Type / Filter Area: MCE 385 Lab Sample #: 8 Grid Opening Size: 0.01124 Client Sample#: 08 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 5/28/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure St'ucture Type Length ID of Structure N or V EDS (Nonadb No F a C M >-05 p >-5p Chrys Amphibole Nonasb Ambig/ND No Coord Elements) <5|J

Struct = > O.ip > 5:1 Aspect Ran Grid acceptance:

^/= Positive diffraction pattern properties c ’Jin ng to <50% undissolved filter, overlapped or folded Totals laboratory identification critena observed <10% particulate coverage >50% coverage ale least 20 unfolded or overlapped grid squares <5% F B C M >5p ■'/= EDS spectrum ccnforming to laborato- holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter a;. ’ Crocictolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002888968

NYC-WTC_000222400