NYC-WTC_000207903

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name NYC BOE Volume (liters) 1928 Lab Group # 8730 Filter Type / Filter Area MCE 385 mm Lab Sample # 15 Grid Opening Size 001124 Client Sample # 15 Area Examined 0 04496 mm^ GRID BOX Magnification 20 000 GRID ID Accelerating Voltage 100 KeV # Grid Openings 4 Analysis Date 8/22/02

Analysis Performed By ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or v EDS No (Nonadb F B C M > 05 p >=5(j Chrys Amphibole Nonasb Ambig/ND No Cooid <5p Elements)

7E Pl

7C^------

Struct = >0 5p >5 1 Aspect Ratio Grid acceptance V Positive diffraction pattern properties conlorming Io undissolved filter overlapped or folded Totals laboratory identification critena observed <10/ particulate coverage 50/ coverage ate least 20 unfolded or overlapped grid squares <5 / F B C M >5m 'J EDS spectrum conforming to laboratory boles or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F Single Fiber Amosite B Bundle (<3 Fibers 1 fiber diameter apart Crocidolite Ambiguous C Cluster (>3 Intersections) Anthophyllite Non Asbestos Tremolite M Matnx Non Identified Actinolite NSD No Structures Detected

CITY_21MC100_003017007

NYC-WTC_000207903