NYC-WTC_000214085

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1832 Lab Group #: 8242 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 13 Grid Opening Size; 0.01124 Client Sample #: 15 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/23/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type , Length ID of Structure N or V EDS No (Nonadb F B C M >=05 M ■'* Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: 'J= Positive diffraction pattern properties conforming to <50% unt'l ;sulved filler, overlapped or folded Totals laboratory identification criteria observed <10% part' ;’a'.e coverage >50% coverage ate least 20 i':. Jed or overiapped grid squares <5% F B C M >5m EDS spectrum confonning to laboratory holes or u:ja areas identification criteria observed Chrysotile AM Pl 11 BOLES I Amphibole F = Single Fiber A-i-.osite B = Bundle (<3 fibers <1 fiber diameter apart CiA^idolile Ambiguous C = Cluster (>3 Intersections) Alli iiliyllite Non-Asbestos Tr-’iiolite M = Matrix Non-Identified A ■leiite NSD = No Structures Detected

CITY_21MC100_002870051

NYC-WTC_000214085