NYC-WTC_000201643

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYCBOE Volume (liters): 1920 Lab Group #: 7558 Filter Type / Filter Area: MCE 385 mir? Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #: 09 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 GRID ID: /7^ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/28/02

Analysis Performed By: ROMAN PEYSAKHOV ( GO. Structure Structure Type Length ID of Structure N or K EDS (Nonadb No F B C M >=05 J I i>=5p Chrys Amphibole Nanasb Arabig/ND No i Coord <5iJ Elements)

f7 _L -4—

Struct = > Q-5u _> 5:1 Aspect Ratio Grid acceptance:

Positive diffraction pattern properties confoTning to <50% undissolved filter, overlapped or folded lotah laboratory identification criteria observed <10% particulate coverage >50% coverage ate

4= EDS spectrum conforming to laboratory reast 20 unfolded or overlapped grid squares <5% F F B,! c M >5u boles or opaque areas identification criteria observed Chrysotile I AMPHIBOLES Amphibole " = Single Fiber Amosite B - Bundle (<3 fibers fiber diameter apart Crocidolite Ambiguous C = Diuster (>3 Intersections) Anthophyllite Non-Asbestos I Tremolite M = Matrix Non-ldentified I Actinolite NED = No Structures Defected

CITY_21MC100_011275746

NYC-WTC_000201651