NYC-WTC_000198417

NYC 9/11 Public Portal Document

1 EM Asbestos (air) Count Sheet Client Name: NYC IL’ )!■■ Volume (liters): 1840 Lab Group #: 7890 Filter Type / Filter Area: MCE 385 Lab Sample #: 9 Grid Opening Size: 0.01124

Client Sample #: 09 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20 000 GRIP ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/28/02

Analysis I <1 formed By: fy/ ROMAN PEYSAKHOV

GO. Structure S . ireType Length ID of Stnjcture N or V EDS (Nonadb | No F C M >=05 M >=5m Ctirys Amphibole Nonasb Ambig/ND No Coord <5p Elements) 1

----------- !i

91^

Struct = > 0.5p > 5.1 Aspect Ka'. Grid acceptance: •/= Positive diffraction pattern proper cs cc ng to '50% undissolved filter, overlapped or folded Totals laboratory identification criteria obser/ed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p EDS spectrum conforming to lab ;rato' holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diamet Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003030059

NYC-WTC_000198417