NYC-WTC_000196670

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: ' S759 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 3 Grid Opening Size: 0 01124

Client Sample #: 03 Area Examined: 0 04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 8/25/02

Analysis Performed By: l\/i— romaSi peysakhov

150 Structure Structure Type Length ID of Structure NorV EDS No (Nonadb F B C M >=05 u >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <50 Elements)

ig-psr

Struct = > 0 5p > 5 1 Aspect Ratio Gnd acceptance V= Positive diffraction pattern properties conforming to “hdissolved filter, overlapped or folded Totals laboratory identification cntena observed <10% particulate coverage >50% coverage ale least 20 unfolded oroveriapped gnd squares <5% F B C M >5u •/= EDS spectrum conforming to laboratory holes or opaque areas identification cntena observed Chrysotile AMPHIBOLES i Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Ambiguous Crocidolite C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003042280

NYC-WTC_000196670