NYC-WTC_000217630

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sh Client Name: NYC BOE Vol I 70 Lab Group #: 8213 Filter Type / 1 .;£ 385 mm^ Lab Sample #: 9 Grid Oi ■1124

Client Sample #: 12 Area 4496 mm-

GRID BOX: .000 GRID ID: Accelerate 7 KeV # Grid Openings: 4 All .12/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of EDS (Nonadb No F B C M >=05 p i>=5p Chrys Amphibole :io No ‘ Coord <5m Elements) 7

Struct = >0.5p > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded laboratory identification criteria obsen/ed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% C M >5m a/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chi ; AMPHIBOLES ! Am; F = Single Fiber i Amosite ! B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ami C = Cluster (>3 Intersections) Anthophyllite Non-Ah Tremolite M = Matrix ■ Non-Idc Actinolite NSD = No Structures Detected

CITY_21MC100_002877470

NYC-WTC_000217630