NYC-WTC_000212961

NYC 9/11 Public Portal Document

TEM Asbestos (air) Com i; Client Name: NYC BOE (liters): 1880 Lab Group #: 8244 Filter r Area: MCE 385 mm-’ i Lab Sample #: lO iig Size: 0.01124 I I Client Sample #: IO mined: 0.04496 mm-

GRID BOX: ication: 20,000 ; CRIP ID: Al . 'oltage: 100 KeV I # Grid Openings: 4 K Date: 6/23/02

Analysis Performed By: • MARK PEYSAKHOV

GO. Structure Structure Type Length "'re N or 1 EDS ■■ . ■ (Nonadb

No Coord No F B C M >=05p ■ >=5 • m ' Chrys j jnasb Ambig/ND i I Elements) I <5m

27 J

Struct = > O.3p > 5:1 Aspect Ratio Grid accepBiice;' Positive diffraction pattern properties conforming to <50% undissolved 'liter, overlapped or folded Totals laboratoiy identification critena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid'squares <5% F B C M >5m v = EDS specruir; conforming Io laboratory holes or opaque areas identifiestion criteria observed e AMPHIBOLES F = Single Fiber Amosite B = Bundle (<3 libers <1 fiber ciaineter apart Crocidolite C = Cluster (>3 iniersections) Anthophyllite ,s Tremolite M = Matrix 0 Actiroi'ie NSC = No :3lrjctures Detected

CITY_21MC100_002867722

NYC-WTC_000212961