NYC-WTC_000212975

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8265 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 15 Grid Opening Size: 0.01124

Client Sample #: 15 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/24/02

Analysis Performed By; ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure NorV EDS No (Nonadb F B C M >-05 M >=5p Chrys Amphibole Nonasb Ambig/ND

s No Coord <5p Elements) j

Struct “ > 0.5g .> 5:1 Aspect Ratio Grid acceptance: \ = Positive diffraction pattern pro|>erfies conforming to '^0% undssotved filter, or folded Totals i-u_ _ identification laboratory ___ ,,i____ J a.,;. observed criteria <10% patliculate Coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p V= EDS spectrum conforming to aboratory holes or opaque areas identification critena observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber d.anieter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002867748

NYC-WTC_000212975