NYC-WTC_000207948

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name NYC BOE Volume (liters) 1928 Lab Group # 9088 Filter Type / Filter Area MCE 385 mm^ Lab Sample # 5 Grid Opening Size 001124 Client Sample # 5 Area Examined 0 04496 mm^

GRID BOX Magnification 20,000 GRID ID Accelerating Voltage too KeV # Grid Openings 4 Analysis Date 11/11/02

Analysis Performed By ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure Norv EDS No (Nonadb F B C M >=05 (J >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5)J Elements)

r If (1

Photo No (from 1 in 5 asbestos containing samples) Gnd acceptance Struct = > 0 5|j >51 Aspect Ratio <50% undissolved filter overlapped or folded Totals y/= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory idenbfication critena observed least 20 unfolded or overlapped grid squares <5% F B C M >5iJ holes or opaque areas EDS spectrum conforming to laboratory Chrysotile identification cntena observed AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos i Tremolite M = Matnx Non-Identified ' Actinolite NSD = No Structures Detected

CITY_21MC100_003017388

NYC-WTC_000207948