NYC-WTC_000178972

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Clicpt Name; NYC BOE Volume (liters); 1816 Lab Group #: 7987 Filter Type / Filter Area: MCE 385 mm’ Lab Sanaple 6 Grid Opening Size: 0.01124

Client Sample #: 09 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 N or 7 EDS No >*05 p Nonasb Amb^O (Nonadb F B C M >=5p Chrys Amphibole i No Coord <5|J Elements)

■ ■

I i

Struct * > 0.5p >5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissoiveo fUtsr. oveiiappsd or folded Totals laboratory identHteaSon criteria observed <10% partculate coverage >50% coverage ate least 20 unfolded or oveitapped grid squares <5% F B C M >5m •7= EDS spectrum conforming to laboratory holes or opaque areas identification criteria otiseived Chrysotile AMPHIBOLES Amphibole F * Stogie Fiber Amosite B * Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C * Cluster (> 3 Intetseeltons) Anthophyllite Non-Asbestos Tremolite M = Mat'w Actinolite ■ Non-Identified NSC = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003456508 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000178977