NYC-WTC_000212960

NYC 9/11 Public Portal Document

TEM Asbestos (air) Coun t At Client Name: NYC BOE e (liters); 1880 Lab Group #: 8244 Filter 17 er Area; MCE 385 mm" Lab Sample #: 9 Cl .ing Size; 0.01124 CHent Sample #: 09 amined: 0.04496 mm-

GRID BOX: I'lcation; 20,000 GRI1)ID: Acci. ■ ■ Voltage: too KeV # Grid Openings: 4 sis Date: 6/23/02

Analysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length "-iure N or V EDS No rjonasb (Nonadb F B C M >=05 p >=5p Chrys Ambig/ND No Coord <5p Elements) ;

/ ere?

A,

Struct = > 0.5p > 5:1 Asp«ict Ratio Grid acceptance: 'J = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u 7= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed lie AMPHIBOLES le F = Single Fiber Amosite IS B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthophyllite :os Tremolite M = Matrix ed . Actinolite NSD = No Structures Detected

CITY_21MC100_002867721

NYC-WTC_000212960