NYC-WTC_000202343

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sfaeet Client Name: NYC BOE ynlurrmjliter^h 1928 Lab Group #: 8807 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample tf -. 06 Area Examined: 0.04496 rr.m’ GRID BOX: /3J7 Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 9/5/02

Analysis Performed By: ROMAN PEYSAKHOV — Structure Structure Type Length ID of Structure N or y (Nonadb No F t C >=05 (J >=5p ■ Chrys Amphibole Nonasb Amblg/ND No Soord Elements) i <5(j

7/

76-^ - 7 i

Struct => 0.5(1 > 5:1 Aspect Ratio Grid acceptance: < a'= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded oroveriapped grid squares <5% F B C M >5u 4- EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile I AMPHIBOLES | Amphibole F = Single Fiber - Amosite ■ B = Bundle (<3 fibers <1 fiber diameter aoart Crocidolite Ambiguous C .i Cluster (>3 intersections) Anthophyllite Non-Asbestos Tremolite M =iHatrix: Actinolite Non-Identiiied j NSD = No Structures Detected

CITY_21MC100_011276540

NYC-WTC_000202343