NYC-WTC_000178972

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1816 7987 Filter Type / Filter Area: MCE 385 Lab Sample #: 7 Grid Opening Size: 0.01124 Glient Sampled: 10 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings; 4 Analysis Date: 6/6/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS (Naradb No F B C M >•05 p >=5p Chrys Amphibole Nonasb Ambig/ND i No i Coord <51J Elements)

.__ LZ ! —— —2—

I —t —t

Struct = > 0-5p > 5; 1 Aspect Ratio Grid acceptance: ^• Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Tot^ laboratory idenfilfcalioncrttetia observed <10% paniculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5m V® EDS spectrum conforming to laboratory holes or opaque areas idertificabon 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 Tremolite M = Matrix Actinolite ■ Non-Ideiitified NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_0 03456509 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000178978