NYC-WTC_000218101

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Wilume (liters): 2000 Lab Group #: 68% Filter Type / Filter Area: MCE Lab Sample #: 4 Grid Opening Size: 0.0 1

Client Sample #: 04 Area Examined: 0.04-146 n

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/2/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length Do!Structure \ or o No fNonadP F : B C M >=06 p Chrys Amphiboie ' NonSt F Amtig.AI <5p E'emeri'i

M V r

Struct > 0.5p >5.1 Aspect Ratto Grid acceptance: '/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratori' identification criteria observed <10% particulate coverage >50% coverage ate leas; 20 unfolded or overlapped grid squares <5% i F B ; C i M ; >/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed ~ Chiysotile | AMPHIBOLES Amphibole i F = Single Fiber Amosite B = Bundle (<3 libers <1 liber diameter apart Crocidolite Ambiguous , C = Cluster (>3 Interseclions) Anthophyllite Non-Asbestos ! Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_000465887 NYC-WTC_000218101