NYC-WTC_000223811

NYC 9/11 Public Portal Document

TEMAsbestos (airkCount Sheet Client Name: NYC BOE Volume (liters); 1928 Lab Group #: 7633 Filter Type / Filter Area: MCE 385 Lab Sample #: 7 Grid Opening Size: 0.01124 Client Sample #: 07 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage; too KeV # Grid Openings: 4 Analysis Date: 5/4/02

Analysis Performed By: ROMAN PEYSAKHOV

A GO Structure Structure Type Length ID of Structure N or v EDS Al------- No Coord No F B C M >=05 u <5m >=5p Chrys Amphibole Nonasb Ambig/NO (Nonadb Elements) I -------------- 1 I

-X..

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: = Positive diffraction pattern properties conforming to *5°?’ “'’****“*''®*^ o^srlapped or folded Tot^ laboratory identification criteria obsenreo <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C XlVL 'J- EDS Spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ---- 1----- AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous j C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002919970

NYC-WTC_00022381 1