NYC-WTC_000217889

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 6645 Filter Type Filter .Area: MCE 3S? mm- Lab Sample #: 9 Grid Opening Size: 0.01124

Client Sample #: 9 Area Examined: 0.04496 mm-

GRID BOX: -Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2,0 2/02

Analysis Performed By: C MARK PEYSAKHOV

GO. Structure I Structure Type Length ID of structure Nor v I EDS No ; F B C >=05 u :>=5fj Chrys Amphibole I Ncnasb ■aSS^d’i No Coord <5(j I Elements) .

Struct = >0.5p >5:1 Aspect Ratio Gric acceptance: >(= Positive diffraction pattern properties conforming to "^0% undissolved filter, overlapped or folded Totals laboratory identification criteria observed ':10% oarticulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% I F I B ! C I M i 9= EDS spectrum conforming to laboratory holes or opaque areas iden'jfication criteria observed Chrysotile j i AMPHIBOLES i ■Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart j Crocidolite -Ambiguous C = Cluster (>3 Intersections) ( Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002878021

NYC-WTC_0002 17889