NYC-WTC_000228830

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume Piters): 1816 Lab Group #: 7684 Filter Type / Filter Area: MCE 385 Lab Sample#: 7 Grid Opening Size: 0.01124 Client Sample #: 09 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/9/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS No INoradb F C M >=05 M >=5p Chrys Amphibole Nooasb AmbigMD No Coord <5p Elements) I

Struct = >O.Sp >5:t Aspect Ratio Grid acoeplance: <= Positive diffracton pattern properties conforming to *50% undissoived ilto, overtepped or folded Totals labcratoiy i^Ocafen critsna obseived Aninnn nk<*nmrt.r^ <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5j EDS spectnjfn confoiming to Saboratoty holes or opaque areas idertification criteria obseived Chrysotile AMPHIBOLES Amphibole F=: Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Interseciions) Anthoptiyttite Non-Asbestos M = Matrix Tremolite Actinolite Non-Identified NSD - No Structures Detected

CITY_21MC100_002901760

NYC-WTC_000228830