NYC-WTC_000201309

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7353 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 8 Grid Opening Size: 0.01124

Client Sample #: 08 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/7/02

Analysis Performed By: MICHAEL GORYCKI

GO. Structure Structure Type Length ID of Structure N or 0 EDS

(ft No Coord No F B C M M5|j <5p i>-5p Chrys Amphibole Nnnasb I Ambic/ND I (Nonadb Elements)

707 IS Y 11 /V

/O

Struct = > O.dpi > 5:1 Aspect Ratio Grid acceptance: '/= Positive diffraction pattern properties confcrming to undissolved filter, overlapped or folded Totals laboratory' identification criteria obserx'ed <10% particLiete coverege >50% coverage ate least 2C unfolded or overlapped grid squares <5% B C M >5u '/= EDS spearum conforming to iaooratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole r = Single Fiber Amosite B “ Bundle (<3 f bsrs <1 fiber diameter aaart Crocidolite Ambiguous C = Cluster (.>3 Intersections) Anthophyllite Nor-Asbestos Tremolite M = Matrix NonJdentified Actinolite NSD = No Structures Detected

CITY_21MC1OO_O112756O5

NYC-WTC_000201316