NYC-WTC_000229065

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume {liters): 1816 Lab Group 7858 Filter Type Z Filter Area: iMCE 385 mm- Lab Sample #: 16 Grid Opening Size; 0.01124 Client Sample #; 18 Area Examined: 0,04496 mm-

GRID BOX: Magnification; 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openines: 4 Analysts Date; 5/25/02

Zi____ Analysis Performed By; 7~ _i

MARK PEYSAKHOV

GO, Structure Structure Type j Length ID Of Struaure N or v £DS ’ IHpnadb I No F BjC M I >-05 p :>=5p Chrys Airphibote Nonasb Amtjig/ND Elemenls) i No Cc»rd <5p —I— ri 4 ) 4

1

Struct = > 0.5ii >5.1 Aspect Ratio Grid soeptanee: Posilive aiffractiori pattern properties conforming Io <50% undissolved filter, overlapped or folded Totals laboratory identifcatian criteria observed < 10% particulate coverase a50% cewerage ate least 20 unfolds! or ovedapped grid squares <5% 1 F B C M i >5y = EDS spectrum conforming to laijoratory holes 01 opaque areas identification criteria observed Chrysotile J AMPttfBOLES Amphibole F = Single Fiber Amosite 3 = Bundle (<3 fibers <1 liber diameter apart Crocidbfite Ambiguous I C * Cluster i>3 lntereeotions| Anthophyllite Non-Asbestos Tremolite M = Main* Actinolite Non-Idcntified USD = No Slructures Detected

CITY_21MC100_002902129

NYC-WTC_000229065