TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEMAsbestos (air) Count Sheet [ Client ^ame: NYC BOE Volume (liters): 1936 Lab Group #: 6220 Filter Tvpe / Filter Area: MCE 3S5 mm- t.flb Sample ii: Grid Opening Size: 0.01124 Client Sample #: Area Examined: 0,04496 mm‘ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/29/01

Analysis Performed By: MARK PEYSAKHOV

GO ! Structure Structure :ype j Length ID of Structure N or V j EDS No >=05 p "Chrys I Amphibole | Nonasti i Ampig/ND (Nonadb 1 F I B C M ■=5|j Elements) । Nc Coord <5u —1—. 1

23 3-® r'-

Struct = ' 0.5p > 5:1 Aspect Ratio GnO acceptance: Pcsitive diffraction pastern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory loentification ctrteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F I B C M >5u y= EDS spectrum conforming tc laboratory tioles or opaque areas laentification criteria observed Chrysotile AMPHIBOLES Amphibole r = Single i^iber Amosite 5 = Sundle i<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I C = Cluster (> 3 Intersections! Anthophyllite Non-Asbestos ' T remolite M = Matrix Non-Ideuiified i Actinolite NSD = No Structures Delectec _____ ______ . I.

CITY_21MC100_003105162

NYC-WTC_000184465