NYC-WTC_000228798

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name; NYC BOE Volume (liters); 1808 Lab Group #: 7664 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #; 06 Area Examined: 0.04496 mm" GRID BOX: Magnification: 20,000 GRID ID; Accelerating Voltage; 100 KeV # Grid Openings: 4 Analysis Date: 5/7/02

Analysis Performed By; MARK PEYSAKHOV

GO. Structure Structure Type length lb of Structure N or 7 EDS No {NonaOb F 3 C >=05 p >=5p Chrys Amphibole Nonasb Ambigfl^D No Coord sSp Etements)

77

Struct = > 0.5jj > 5:1 Aspect Ratio Grid acceptance;. 7= Positive diffraction pattern properties conforming to <50% undissotved filter, overlapped or folded Totals laboratory identtficatian critetia observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5(j 7= EDS spectrum confotmirg to laboratory holes Of opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite a = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite HSD = No Structures Detected

CITY_21MC100_002901712

NYC-WTC_000228798