TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: m’C BOE Volume (liters): 1944

Lab Group 6117 Filter Type / Filter Area: MCE 385 mm* Lab Sample Grid Opening Size: 0.01124 Client Sample #: Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/15/01

Analysis Performed By: ROMANPEYSAKHOV

30. Structure Structure Type Length ID of Structure N or M EDS No (Nonadb F B C '=5(j Chrys | Amphibole Nonasb Amcig/ND No Coord <5u Elements)

1 I A Zf

____________________ Struct = > 0.5 pi > 5 1 .Aspect Ratio Grid acceptance:

\ = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped gnd squares <5% F B i C M I >5p v = EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed AMPHIBOLES i Chrysotile Amphibole ~~i F = Sitigte *iber Amosite 8 = Bundle !<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matnx Non-Identified ! Actinolite NSD = Mo Structures Detected 1 .... J. L.

CITY_21MC100_003104813

NYC-WTC_000184227