NYC-WTC_000227990

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6882 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #; 06 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/2/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS (Nonadb No F B C M >=05.g Chrys Amphibole Nonasb Ambig/ND No ■ Coord <5tJ Elements I -I---------- -

— <2^ a

Struct “ > 0.5g > 5:1 Aspect Ratio Grid acceptance: 7= Posmve diffraclion pattern properties confomiing to un^ssolyed filter, pvettep^ or folded Totals latxjratory identitioation criteria observed ' - - ■ - 1 - ■ <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% C M ; >5y v‘= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (‘3 fibers <1 fiber diameter apart Crocidolite Ambiguous C ’ Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified N5O = No Structures Detected

CITY_21MC100_002899585

NYC-WTC_000227990