NYC-WTC_000218349

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOL V olume (liters): 1 920 Lab Group #: 6986 Filter Type / Filter Area: MCE 385 mm- Lab Sample#: 14 Grid Opening Size: 0.01124

Client Sample #: 14 ■Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20.000 GRID ID: Accelerating V oltage: 100 KeV # Grid Openings: 4 ■Analysis Date: 3^8/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or No F bTc M >=05 u Chrys Amphibole Nonasb ! Elements) Nio Coord <5u ------1------

3 /■

Struct = > 0,5p >5:1 Aspect Ratio Grid acceptance: y = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% f F ' B ! C i M EOS spectrum conforming to laboratory holes or opaque areas Identification criteria observed Chrysotile ■AMPHIBOLES Amphibole F = Single Fiber Amosite Crocidolite ■Ambiguous B = Bundle (<3 fibers <1 fiber diameter apart Anthophyllite I Non-Asbestos C = Cluster (>3 Intersections) T remolite 1 i M = Matrix Actinolite I Non-ldentified N50 = No Structures Detected

CITY_21MC100_000466343 NYC-WTC_000218349