NYC-WTC_000217639

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count S Client Name: NYC BOE V. 1816 Lab Group #: 8213 Filter Type MCE 385 mm^ Lab Sample #: 18 Grid I J.01124 Client Sample #: 21 Arc J.04496 mm^

GRID BOX: 20,000 GRIP ID: Accelei. 100 KeV # Grid Openings: 4 6/22/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length I; 7 EDS No (Nonadb F B C M >=05 p Chrys Amphi:. mbig/ND No Coord <5p Elements)

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Js laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% B C M >5p •7= EDS spectrum conforming to laboratory holes or opaque areas Identification criteria observed AMPHtBOLES F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthophyllite Noi. Tremolite ; M - Matrix Noii Actinolite NSD = No Structures Detected

CITY_21MC100_002877479

NYC-WTC_000217639