NYC-WTC_000229381

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 Lab Group #; 8267 Filter Type Z Filter Area: MCE 385 Lab Sample #; 9 Grid Opening Size; 0.01124 Client Sample #: 11 Area Examined; 0.04496 ram" GRID BOX: Magnification: 70 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings; 4 Analysis Date: 6/24/02

Analysis Performed Bv: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS (Nonadb No F B C M >MJSp >=5p Chrys Amphibole Nonasb AmWg/NO No' Coord <5y Elements)

Struct = > 0,5p _> 5:1 Aspect Ratio Grid acceptance: V= Posftve diflractton pettam properties confonninq to <50% undissoh/ed fitter, overlapped tv folded Totals laboratory identification criteria observed <10% paniculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >Sp V- EDS spectram confcmwig to laboratory hote Of opaque areas IdentMcalton criteria obsenrad Chrysotile ’ AMPHIBOLES ] Amphibole F = Single Fiber Amosite 8 = Bundle (<3 libera <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) AnBiophyllile Non-Asbestos Tremolite M - Matrix Actinolite Non-Identified NSD = No Stnictores Detected

CITY_2IMCl0 0_0 00492067 NYC-WTC_000229381