NYC-WTC_000221410

NYC 9/11 Public Portal Document

I EM Asbestos (air) Count Sheet Client Name: NYCB‘ I’- Volume (liters): 1840 Lab Group #: 7890 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #: 09 Area Examined: 0.04496 GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV #GridOoenings: 4 Analysis Date: 5/28/02

Analysis I 11 formed By: l\J ROMAN PEYSAKHOV

GO. Structure S ..creType Length ID of Structure Norv EDS (Nonadb No F C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND Coord <5p Elements)

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Struct = > 0.5p > 5:1 Aspect Ra; Grid acceptance: yj- Positive diffraction pattern proper co (Q <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 B C M >5|J EOS spectrum conforming to lab /ato' holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diamet .-r. Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite NomAsbestos M = Matrix T remolite Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_000622297 NYC-WTC_000221410