NYC-WTC_000217636

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sht Client Name: NYC BOE Volti 1848 Lab Group #: 8213 Filter Type / F MCE 385 mm" Lab Sample #: 15 Grid Op 0.01124 Client Sample #: 18 Area 1 0.04496 mm"

GRID BOX: Mir. 20,000 GRID ID: Acceleratii 100 KeV # Grid Openings: 4 An: 6/22/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID off 7 EDS No (Nonadb F B C M >=05 M >=5(J Chrys Amphibole mbig/ND No' Coord <5p Elements)

Struct = > 0.5(1 >5:1 Aspect Ratio Grid acceptance: 7= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Is laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% B C M >5m 7= EDS spectrum conforming to laboratory boles or opaque areas identification criteria observed Chi ampfubolesI Ann F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Ami Crocidolite C = Cluster (>3 Intersections) Anthophyllite Non-A: T remolite M = Matrix - Non-Idc Actinolite NSD = No Structures Detected

CITY_21MC100_002877476

NYC-WTC_000217636