NYC-WTC_000191404

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count SI Client Name: NYC BOE 'AlliLt'-Sll 1944 Lab Group #: 7851 Filter Type / tor- Ai;ea: MCE 385 mm" Lab Sample #: 10 Grid () .ling Size: 0.01124 Client Sample #: 10 Are-., xatniiied: 0.04496 mm^

GRID BOX: 51 ■ i ileal i 1)11: 20,000 GRID ID: Accelera 100 KeV # Grid Openings: 4 A .sis b..te: 5/25/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID juclur? NorV EDS No (Nonadb F B C M >=05 p >=5|j Chrys Anaphibc Norii Ambig/ND No Coord ■:5p Elements)

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Struct > 0.5(1 >5:1 Aspect Ratio Grid acceptance: 'J= 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 or oveilapped grid squares <5% F B C M >5p '1= EDS spectrum conforming to laboratory holes or opaque areas idenbflcabon cntena observed Chrysotile AMPHIBOLES ! Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003090674

NYC-WTC_000191404