NYC-WTC_000228989

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1920 Lab Group #: 7797 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 14 Grid Opening Size: 0.01124 Client Sample #; 14 Area Examined: 0.04496 miri- GRID BOX: Maeniflcation: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/19/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type LengSb ID of Structure N or y EDS No (Nonadb F B C M =-=05 p >=5]j Ctirys Amphibole Nonasb Amb^D No Coord <5u Elements)

Struct = > O.Sp > 5; I Aspect Ratio Grid acceptance; '/= Poaitire diffraction pattern properties oonfoming to <50% undissotved Filter, overtapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ala least 20 unfolded or overlapped grid squares <5% F B C M >5u '1= EDS spectrum tartforming to iaboratory holes or opaque areas identiiicalion critetia observed Chrysotile A.MPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle !<3 fioere <1 fiber diameter apart Crocidolite Ambiguous” C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-ldentified NSD = No Structures Detected

CITY_21MC100_002902007

NYC-WTC_000228989