NYC-WTC_000189681

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 Lab Group #: 7282 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 13 Grid Opening Size: 0,01124 Client Sample #: 16 Area Examined: 0.04496 mm^ GRID BOX: Mauiiitication: 20,000 GRID ID: Acceleratinu Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/31/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of S'njcture Norv EDS (Nonadb No F B C M ’-05 M >=5p Ctirys Amphibole Nonasb Ambig/ND ‘ No ! Coord <5p Elements)

Struct = > 0.5)1 >5:1 Aspect Ratio Grid acceptance: •/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% F B c M >5p boles or opaque areas identification criteria observed Chr otile AMPHIBOLES Amp!.; bole F = Single Fiber Amosite a - Bundle (<3 fillers <1 fiber diameter apart Crocidolite AmbijLious C = Cluster (>3 Intersections) Anthophyllite Non-As. ostOS Tremolite M - Matrix Non-Idei’tirted Actinolite NSD = No Structures Detected

CITY_21MC100_003087638

NYC-WTC_000189681