NYC-WTC_000229190

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume niters): 1836 Lab Group #: 7978 Filter Type / Filter Area; MCE 385 mm" Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 06 - Area Examined: 0.04496 mm^

CsaiB BOX: Magnification; 20 000 GRWID: "J Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/5/02

Analysis Performed By; ROMAN PEYSAKHOV

i GO. structure Structure Type Length IDofStrucfesre Norv EDS (Nonadb No F B C M >*05 p >=5p Chrys Nonasb AfrtJigW No Coord <5p Eternents)

32S ss A

- i— ■ ■ a

i I : I__________ 11 Struct - > 0.5g > 5: i A^ct Ratio Gnd acceptance: -Js Positive dlffracdcn pattern properttes conforming to <50% undtesotvBd fitter, overlapped orfbided Totals laboratory ideritlSiabon criteria observed <10% partotats coverage >50% coverage ate least 20 unfotdefl or overlapped grid squares <5% F B C M >5m '/* EDS spectrum conforming to laboratory holes or opaque areas fdenifflealton criteria observed Chrysotile j AMPHI^LEn Amphibole F = Single Rber Amosite B * Bundle (<3 fibers <1 fiber diameter apart Crocidcllte Ambiguous C = Cluster (>3 Intersections) I Anthophyllite Non-Asbcstos ; Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC1OO_OOO491676 NYC-WTC_000229190