NYC-WTC_000201754

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BGE Volume fliters): 1840 Lab Group #: 7045 Filter Type / Filter Area: MCE 3 85 mm^ Lab Sample it-. ■ 15 Grid Opening Size: 0.01124 Client Sample #: 15 /■ Area Examined: 0.0449,6 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/12/02

Analysis Performed By: MARK PEYSAKHOV

! GO. Structure Structure Type Length ibofStructure N or V \ EDS I——p- No (Nonadb F B C >=05 p >=5)J Chrys Amphibole Nonasb Ambig/ND No Coord <5|j Elements) /

J

Struct= > 0.5n > 5:! Aspect Ratio Grid acceptance: Positive diffraction pattern properSes conforming to ' “^50% undissolved filter, overfeed or folded : Totals laboratory identification criteria observed <10% partiGulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% E M >5p: EDS spectrum conforming to laboratory holes or opaque areas identfication criteria observed Chrysotile AMPHIBOLES Amphibole F = SingleFiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) . Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified j Actinolite NSD-No Structures Detected

CITY_21MC100_005390035

NYC-WTC_000201754