NYC-WTC_000229057

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Grouw #: 7858 Filter Type / Filter Area: MCE 385 mm- Lab Sample #; 8 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0.04496 mm-

GRID BOX: Magniflcation: 20.000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 5/25/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID Of Structure N or v EDS ! (Nonadb I No F B C M «05 M >=5p Chrys Amphibole kooasb Ambig/ND No Coord <Su Eierrents) !

3 -------e— ----------

! 1'

1 i

I I Struct = > 0.5pi > 5-1 Aspect Ratio Grid acceptance: '/= PosiSve diffraction pattern properties conforming to <50% undiMohod filter, overlapped or folded Totals laboratory idenfilicaiion criteria observed <10% paiticufate cwrerage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5u EDS spectrum conforming to laboratory holes or opaque areas identification critana observed Chrysotile AMPHIBOLES Amphibole F - Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersecllons) Anthophyllite Non-Asbestos I ! Tremolite i M = Mairix Actinolite Non-Ideniified j i

NSD = No Sirurdures Defected

CITY_21MC100_002902121

NYC-WTC_000229057