NYC-WTC_000228599

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1856 Lab Group #: 7508 Filter Type / Filter Area: MCE 385 inm- Lab Sample #: 9 Grid Opening Size: 0.01124

Client Sample #: 11 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 4/23/02

Analysis Performed By: _____ My _____ ROMAN PEYSAKHOV T GO. Structure Structure Type Length 10 of Structure N or V EDS : (Nonadb No F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambigt'ND No Coord <5p Elements) i

MS If

4:

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: 7= Positive d ffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overtapped grid squares <5% F B C M >5u V = EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHiBOLES Amphibole F = Single Fitter Amosite Crocidolite Ambiguous B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002901106

NYC-WTC_000228599