NYC-WTC_000228824

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Voinme (liters): 1800 Lab Group #: 7672 Filter Type / Filter Area: MCE 385 mm- Lab Sample 16 Grid Opening Size: 0.01124 Client Sample 18 Area Examined: 0 04496 mm^ GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV Grid Openings: 4 Analysis Dale: 5/8/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length .OofSinjcfure Nor v EOS No (Nonadb F B C >=05 M >=5|j Chrys Amphibole Nonasb Ambig/ND . No Coord <5y Elements) i

^5 rr_ _X- //

7/=^

j

Struct = >0.5p >5:1 Aspect Ratio Grin acceptance;: ■/= Positive diffraction patten; properties confamiing to <50% undissolved filter, overtapped or folded Totals laboratory identifcatlon criteria observed <10% particulate coverage >60% coverage ate least 20 unfolded or overlapped grid squares <6% B c M ■ ■/= EDS spectrum confoftning to laboratory holes or opaque areas tdenlificatton criteria observed Chrysotile _____ AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite Id = Matrix Actinolite Non-Identified NSO = No Structures Delected

CITY_21MC100_002901745

NYC-WTC_000228824