NYC-WTC_000201912

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYCBOL Volume (liters): 1S40 Lab Group #: 6672 Filter Type / Filter Area: MCE 385 mmV Lab Sample #: 11 Grid Opening Size: 0,01124

Client Sample #: 11 Area Examined: 0,04496 mm-

GRID BOX: Magnification; ,20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/14/02

Analysis Performed By: ROMAN PEYSAKHOV

GD. Structure Structure Type Length ID of Structure Nor- b EDS (Nonadb No F B C M >=05 J =5(J Chrys Amphibole Nonasb Ambig/ND No Coord <5p . Elements)

•3^ I v? If y AV K

Struct = > 0.5pt > 5:1 Aspect Ratio Grid acceptance: 4= Positive diffraction pattern properties conforming to <50% undlssoived filter, overlapped or folded Totals Isboratori' identificaticn cr:teria observec <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B i C M >5p I-EDS spectrum oenforming to laboratory holes or opaque areas identification criteria 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 T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003269562

NYC-WTC_000201912