NYC-WTC_000226804

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6873 Filter Type / Filter Area: MCE 385 mtn- Lab Sample #: 13 Grid Opening Size: 0.01124 Client Sample #: Area Examined: 0.04496 mm-

GEDD BOX: GRID ID: # Grid Openings: 4 iS' Magnification: Accelerating Voltage: Analysis Date: 20,000 100 KeV 3/1/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS No ■ (Nonadb F B C M =5p Chrys Amphibole Nonasb Ambig/NC Elements) No . Coord

/yW (Z TZEZZ 4__ _ /tg

Struct = > O.iu > 5:1 Aspect Ratio Grid acceptance: V= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laooratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u 7= 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 Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002923087

NYC-WTC_000226816