NYC-WTC_000215687

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC eoE Volume (liters): 1928 Lab Group #: 6080 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 18 Grid Opening Size: 0.01124 Client Sample #: 18 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/12/01

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of structure Norv EDS No (Nonadb F B C M TToTu >=5p Chrys Amphibole Nonasb AmbigZND No Coord <5p Elements)

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance; ■i- Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

'/= EDS spectrum conforming to laboratory. least 20 unfolded or overlapped grid squares <5% F B C M >5u i holes 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 M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002874024

NYC-WTC_000215704