NYC-WTC_000228740

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume flitcrsl: 1808 Lab Group #: 7614 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 15 Grid Opening Size: 0.01124

Client Sample #: 17 Area Examined: 0 04496 mm" GRID BOX: Magnification: 20,000 GRJD IP: AcceleratiBg Vokage; 100 KeV # Grid Openings: 4 Analysis Date; 5/2/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS (Nonadb No F B C M >=05 u >=5p Chrys Amphibole Nonasb AmbigZND No Coord <5iJ Eierrentsl

■3

i

I H I

Struct = > O.Sfi >5:1 Aspect Ratio Grid acceptance: Posite diffi^on pattern parties conforming to *^0% u^W^RIte^ov^ap^or^^ Totals laboratory idenrifloatlon criteria observed teast 20 urtloWedorovsrtepped grid squares <5% F B C t/= EDS spectrum conforming to laboratory boles or opaque areas idenlificatfon criteria observed Chrysotile ■ AMPHIBOLES Amphibole f = Single Eiber Amosite e = Bundle (<3 Sberdrameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M - Matrix Actinolite Non-ldentified 1 I NSO = No Structures Detected

CITY_21MC100_002901600

NYC-WTC_000228740