NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client iName: ATC Volume (liters): 3700 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 14 Grid Opening Size: 0.01124 Client Sample #: 14 Area Examined: 0.24728 mm^

GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS No >=05 p i ■=op (Nonadb F B C ! M Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

VZjVS 5? 2, 7^ ^7 j fez

✓51^

a 5_g2 /Vj'Z? cZ'Tl

I .........I ,_______ L_L Photo No. (from 1 in 5 asbestos containing samples) Grid acceptance: Struct = > 0.5m a 5:1 Aspect Ratio <50% undissolved filter, ovedapped or folded Totals \ = Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overtapped grid squares <5% [ F B C M ! >5lj EDS spectrum conforming to laboratory holes or opaque areas Chrysotile identification criteria observed AMPHIBOLES .\mphibole r = 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 NSO = No Structures Detected

CITY_21MC100_003069447

NYC-WTC_000202903