NYC-WTC_000228355

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; m'CBOE Volume (liters): 1840 Lab Group #: 6409 Filter Type / Filter Area: MCE 385 mm* Lab Sample #; 16 Grid Opening Size: 0.01124 Client Sample #; 16 Area Examined: 0.04496 mm’ GRID BOX: Magnification; 20,000 GRID ID; Accelerating Voltage: 100 KeV # Grid Openings; 4 Analysis Date: 1/23/02

Analysis Performed By: MARK PEYSAKHOV

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

Struct« > 0.5p > 5:1 Aspect Ratio Grid acceptance; Positive difftaction pattern properties conforming to <50% undissolved filtw. overiapped or folded Totals laboratory Identiitestiori criteria obsetved <10% paniculate coverage >50% coverage ate least 20 unfoided or overiapped grid squares <5% F B C M EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES I Amphibole F = Single Fiber Amosite S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite , Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matnx Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002900032

NYC-WTC_000228355