TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet ClientNam^ NYC BOE Volume (liters): 1936 Lab Group #: 6038 Filter Type / Filter Area: MCE 385 miu- Lab Sample #: 13 Grid Opening Size: 0.01124 Client Sample #: 13 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 GRID ID: ^3 Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/5/01

Analysis Performed By: MARK PEYSAKHOV

GO. ' Structure Structure Type Length ID of structure N or V EDS (Nonadb I No r B C M '=5(J Chrys Amphibole Nonasb Arr.big/ND No Coord <5tJ Elements)

3^ <5

Struct = > 0.5)1 > 5; 1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties confomiing to undissoived filter, overlapped or folded Totals laboratory identification critena observed ^10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <6% ____________i F S ) c M >5p EDS spectrum conforming to laboraiory holes or opaque areas identification cnteria obsenzed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matnx I Tremolite Actinolite N on-Identified NSD = No Structures Delected

CITY_21MC1OO_OO31O45O5

NYC-WTC_000184009