NYC-WTC_000227920

NYC 9/11 Public Portal Document

TEMAsbestos f air) Count Sheet Ciient Name: NYC BOE Volume (liters): 1840 Lab Group #: 6777 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124

Client Sample #: 6 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/22/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or ? i EDS No ■ Xmbg/ND \ F B C M >=05 p : '=5p Chrys Amphibole Nonasb No Coord <5p I Elements)

/ft 2(1 ------- //

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B i C i M p5u EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chi-ysotile I I AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified NSO = No Structures Detected Actinolite S 1

CITY_21MC100_000491275 NYC-WTC_000227920