NYC-WTC_000228768

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volutne (liters): 1800 Lab Group #: 7636 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 17 Grid Opening Size: 0.01124 Client Sample #: 20 Area Examined: 0.04496 mm* GRID BOX: Magnification: 20 000 GRIDED; ^5 Accderatiag Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/4/02

Analysis Performed Bv: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS Mo iNonadb F B C M ~ >=5p Chrys Ampmboie Nonast) AmfMg/KD No Coord Elements)

3s /0

Struct = > 0.5p >5:1 Aspect Ratto Grid acceptance: 'I = Positwe dinraction pattern properties conforming to <50% undissotved fittar, overlapped or folded Totals laboratory identification criteria observed <10% paniculate coverage >50% coverage ate least 20 unfoWed or overlapped grid squares <5% F B C M ' ’m t/: EOS spectrum conforming to laboratory holes or opaque areas (dentificarfon orfterta observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Sunbie i<3 fibers <1 fiber diameter apart CrocWoIrte Ambiguous C = Cluster (>3 Intereecfens) Anthophyllite Non-Asbestos Tremolite M - Manx Actinolite Non-ldentified f NSD = No Structures Detected

CITY_21MC100_002901650

NYC-WTC_000228768