NYC-WTC_000200529

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume fliters): 1920 Cab Group #: 8123 Filter Type / Filter Area: MCE 385 mm'^ Lab Sample #: 8 Grid Opening Size: 0.01124

Client Sample #: 08 Area Examined: 0.04496 mmT

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV C # Grid Openings: 4 Analysis Date: 6/15/02

Analysis Performed By: ROMAN PEYSAKHOV 7^ GO. Structure Structure Type - Length ID of Structure N or / EDS (Nonadt I No F B- C M >=05 p . >=5(J Chrys Amphibole Nonasb Ambig/ND Coord Elements) ■No <5p

2/5 w rf

Struct “ > 0.5(j >5:l Aspect Ratio Grid acceptance: V= Positive diffraction pattern properties conforming to ^50% undissolved filter, overlapped or folded Totals /laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F ! B C M >5p ■/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Clirysotile I AMPHIBOLES Amphibole F Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) I Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CrTY_21MC100_011274968

NYC-WTC_000200536