NYC-WTC_000217637

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sht Client Name: NYC BOE Volti 1816 Lab Group #: 8213 Filter Type / F MCE 385 mm^ Lab Sample #: 16 Grid Op 0.01124 Client Sample #: 19 Area i 0.04496 mm^

GRID BOX: Mu' 20,000 GRID ID: Accelerati: 100 KeV # Grid Openings: 4 Alt: 6/22/02

Analysis Performed By: MARK PEYSAKHOV

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

CT

Struct = >0.5p >5:1 Aspect Ratio Grid acceptance: >)= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded U.S

laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% 3 C M >5u EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Clr AMPHIBOLES Ar F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Am C = Cluster (>3 Intersections) Anthophyllite Non-A Tremolite M = Matrix ■ Non-kf, Actinolite NSD = No Structures Detected

CITY_21MC100_002877477

NYC-WTC_000217637