NYC-WTC_000229275

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filters): 1816 Lab Group #: 8085' Filter Type / Filter Area; MCE 385 mm’ Lab Sample#: 13 Grid Opening Size: 0.01124 Client Sample #: 15 Area Examined; 0.04496 mm’

GRIP BOX; liifTTnliT 201 GRIP IP: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/13/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length (DdStructure Nor v/ EDS (Nooadb No F B C M >=05m Chrys Amptubote Nonatb Ambig/M) No Coord <5(J Elements)

Struct = > O.Sn > 5:1 Aspect Ratio Grid acceptance: - Positive diffraction pattern properties conforming te <50% undissQived (liter, overlapped or foWad Totals laboratory identWeation criteria cteerved <10% particdato coverage >50% coverage ate least 20 unfolded « overlapped grid squares <5% F B C M >5p EDS spectrum conforming to laboratory holes or opaque areas identificafion 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 NSD - No Strurriures Detected

CITY_21MC1OO_OOO491853 NYC-WTC_000229275