NYC-WTC_000228547

NYC 9/11 Public Portal Document

TEMAsbestosJairXQ)unt Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 7434 Filter Type / Filter Area: MCE 385 mm- Lab Sample 12 Grid Opening Size: 0.01124

Client Sample #: 14 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20.000 GRID n): CT Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/16/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Siructure N or v 53S i'lcnadb No C >=05 u >=^ Chrys Amphibole i Nonasb i AmbigrND No Coord MS <5m — r—

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: '/= Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% f F B i C I M ; >5u 9= EDS spectrum conforming to laboratory holes or opaque areas Identification criteria observed Chrysotile I AMPHIBOLES ! Amphibole F = Single Fiber Amosite B « Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Ti Tremolite M = Matrix Non-Identified I NSD = No Structures Detected Actinolite [ i

CITY_21MC100_002900969

NYC-WTC_000228547