NYC-WTC_000212850

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: KYC BOE Volume (liters); 1920 Lab Group #: 8052 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #; 04 Area Examined: 0.04496 mm- GRn> BOX: X-g Magnification: 20,000 GRg)IP: Accelerating Voltage: 100 KeV it Grid Openings: 4 Analysis Date: 6/11/02

Analysis Performed By; MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS No >=05 M Amphibole Nonasb (Nonadb F B C M >=5p Chrys Ambig/ND No Coord <5m Elements)

Stiuct = > 0.5g > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totals laborator)' identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p •v'= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile .AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <i fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anthophyllite Non-Asbestos Tremolite M - Matnx Actinolite Non-Identified NSO = No Structures Detected

CITY_21MC100_002852438

NYC-WTC_000212850