NYC-WTC_000201808

NYC 9/11 Public Portal Document

1 EM Asbestos (air) Count Sheet ClientNam^ NYC BOE Volume (liters’): 1840 Lab Gronp #: 6974 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: n- Grid Opening Size: 0.01124

Client Sample #: 11 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/7/02-

Analysis Performed By: MARK PEYSAKHOV

GO. Structure । Structure Type Length ID of Structure N or EDS (Nonadb No F ! B i C M , >=05 u >=5p Chrys Amphibole Nonasb Ambig/ND No Coord 'I ' I <5u Elements) ■

A?.? ci

Struct = >,0.5|i > 5: i Aspect Ratio Grid acceptance: 1'/= Positive diffraction pattern properties conforming to <50% ufidissolved 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 >50 7 = EDS spectrurn conforming to laboratory holes or opaque areas identification criteria observed Claysotile AMPHIBOLES • Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) / f Anthophyllite Ncn-Asbestos Tremolite ■ M = Matrix : : : :f Non-Identified Actinolite NSD = No Stiuctures Detected I

CITY_21MC100_003269147

NYC-WTC_000201808