NYC-WTC_000228759

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #; 7636 Filter Type / Filter Area: MCE 3S5 Lab Sample#: 4 Grid Opening Size: 0.01124 Client Sample #: 07 Area Examined: 0.04496 GRID BOX: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date; 5/4/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID or structure Nor V EDS (Nonadb NO F B C >^05 u :>=5p Chfys Amphibole Nonasb ArabigtND Na Coord Elements)

~T ! 2;

J

Struct = > 0.5p > 5; 1 Aspect Ratio Grid acceptance; 'Z’ Positive diffraction pattern properties conforming to <50% undissolved filter, owrteppecl or folded Totals iatjoratory identification criteria observed <10% parSojiate cOTerage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5tj V» EDS spetSrum conforming to laboratory holes or opaque areas iaenilfitason 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 Tremdite M = Matrix Actinolite Non'Identified NSC = No Structures Detected

CITY_21MC100_002901637

NYC-WTC_000228759