NYC-WTC_000192139

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 i Lab Group #: 7336 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 17 Grid Opening Size: 0.01124 Client Sample #: 17 Area Examined: 0.04496 mm’ GRID BOX: Maenification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/6/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or ■'1 EDS No >=05 p (Nonadb F B C M Chrys Amphibole Nonasb Ambig/ND ■ No Coord <5p Elements)

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: 'i= Positive diffraction pattern properties confomring to <50% undissolved filter, overiapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p '/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chiysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003092284

NYC-WTC_000192139