NYC-WTC_000228925

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: r<YCBOE Volume (liters): 1824 Lab Group #: 7750 Filter Type / Filter Area; MCE 385 Lab Sample #: 10 Grid Opening Size: 0.01124 Client Sample #: 12 Area Examined: 0.04496 mm^

GRID BOX: Magnification; 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/15/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length !D of Structure N or V EDS No s=05p Amphibole Amfiig/ND (Nonadb F 8 C M >=5tJ Chrys Nonasb elements) No Coord <5u

5

1

Struct = > 0.5(1 > 5;! Aspect Ratio Grid acceptance: Positive diffracbon pattern properties conforming Io <50% undisMived filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or ovedapped grid squares <5% F B c M >5p ■ ’/= EDS specfhrtjt conforming to laboratory holes or opaque areas identification criteria observed Chrysotile amphiboles Amphibole F = Single Fiber Amosite B = Bundle (<3 Sbers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthoptiylllte Non-Asbestos T rernolite M = Matrix Actinolite Noti-Identified NSO = No Structures Detected

CITY_21MC100_002901907

NYC-WTC_000228925