NYC-WTC_000212944

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet j Client Name: NYC BOE Volume (liter s): 1920 i Lab Group #: .S212 Filter Type / Filter- .Area: MCE 385 mm" I Lab Sample#: 11 Grid Opening Si/e: 0.01124

i Client Sample #: 11 Area Examined: 0.04496 mm"

GRID BOX: Magniliealioii: 20,000 GRID ID: Accelerating Vnltu;;। ; 100 KeV # Grid Openings: 4 Anaivsi.s Dute; 6/22/02

Analysis Performed By: MARK PEYSAKHOV

GO Structure Stnjcture Type Length ID of structure N.. y EDS No Amphibole Non,., (Nonadb F B C M >=05 p >=5p Chrys Arnbig/ND No Coord <5p Elements)

Struct = > 0.5p > 5:1 As[3ect Ratio Gnd acceptance: '/:= Positive diffraction pattern properties conforniing to <50% undissolved filter, overlapped or folded a Is laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% li C M >5p V- EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Clirysotile AMPHIBOLES Amphibole F = Singse Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart CrocidolitB Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos । Tremolite M = Matrix i Non-Identified | Actinolite NSD = No Structures Detected

CITY_21MC100_002852645

NYC-WTC_000212944