NYC-WTC_000228825

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 7684 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: 03 Area Examined: 0.04496 mm-

GRID BOX; Magnification; 20,000 GRIDID; Accelerating Voltage: 100 KeV # Grid Openings; 4 Analysis Date: 5/9/02

Analysis Performed By: MARK PEYSAKHOV

GO. structure Structure Type Length 10 of Structure Nor 7 EDS i (Nonadb i No F B i C M >=05 M >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5)J Elentents)

dZ. ---- .7 ---- - ----

Struct = > 0.5p > 5:1 Aspect Ratio Grib aoeptance:. 7“ Positive diffraction petiern properties conforming Io <50% undiesQlveb filer, overtappeb or fclded Totals laboratory ideritlfication criteria observed <10% parSojIate cwerage >50% coverage ate least 20 unfolded hr overlapped grid squares <5% F B C M >5!j 7= EOS spedrum conforming to laboratory holes or opaque areas identificalion criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 0 = Bundle (<3 fibers <1 fiber diametsr apart Crocidolite An^iguous C = Cluster (>3 litiersectanst Atithophyllite Non-Asbestos Tremolite M = Matrix Non-ldentified Actinolite ! NSC = No Structures Detected

CITY_21MC100_002901754

NYC-WTC_000228825