NYC-WTC_000229245

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume flitersi: 1808 Lab Group 8038 Filter Type / Filter Area; MCE 385 mm" Lab Sample #: 11 Grid Opening Size; 0.01124 Client Sample #: 13 Area Examined: 0.04496 mm" GRID BOX: Magnification; 20,000 GRID IP: Accelerating Voltage; 100 K.eV # Grid Openings: 4 Analysis Date: 6/10/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of StnicturB N or V EDS No (Nonadb F B C M >*05 u ■>=5p Chrys Amph»»te Nonasb No Coord Elemenis) <5u

vT ^-4— t/

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissotved Wler. oweriapped or folded Totals latwratoiy identificatiQn erteria observed <10% particUate coverage >50% coverage ale least 20 unfo'ided or overtapped grid squares <5% F 6 C M >5u Vs EDS speclurr. conforming to laboratory holes Of opaque areas idenStication criteria observed Chrysotile ^Tmphiboles Amphibole F = Single Fiber Amosite B - Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Auithophyllits Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite i MSD = No Structures Detected i______________ -___ I

CITY_21MC100_002902410

NYC-WTC_000229245