NYC-WTC_000196955

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1832 Lab Group #: 6932 Filter Type / Filter Area: MCE 385 ngm^ l ab Sample #: 11 Grid Opening Size: 0.01124 Client Sample #: 13 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: ! 00 KeV # Grid Openings: 4 Analysis Date: 3/4/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure \ or 4 EDS ' No (Nonadb F B C M ■=05m Chrys Amphibole Nonasb Ambig/ND - No Coord <5m Elements)

// 4 2/^

Struct = > 0.5p > 5:1 .Aspect Kutio Grid acceptance:

Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 2C unfoidea or overlapped grid squares <5% B C i \i .. EDS spectrum conforming to labcralory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES .Amphibole F = Single Fiber Amosite B > Bundle f<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster i>3 ntersections) Anthophyllite Non-Asbestos . Tremolite M = Matrix Non-ldentified Actinolite NSD = No Structures Detected

CITY_21MC100_003044274

NYC-WTC_000196955