NYC-WTC_000219451

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume (liters); 1848 Lab Group#; 6550 Filter Type / Filter Area; MCE 385 mn- Lab Sample #; 3 Grid Opening Size: 0.01124

Client Sample 03 Area Examined; 0.04496 mm^

GRIDBOX: 7^ Magnification: 20 000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings; 4 Analysis Date: 2/3/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS No Amphibole Nonasb Ambig/ND (Nonadb F 8 C M >=05 p :>=5p Chrys i No ; Coord <5p Elements) 2

iL

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved titter, overlapped or folded Totals atjoratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p 'J- EDS spectrum conforming to laboratory holes or opaque areas identittcation criteria observed Chrysotile AMPHIBOLES Amphibole F* Single Fiber Amosite B = Bundle (<3 libers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M=Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002880665

NYC-WTC_000219451