NYC-WTC_000219288

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE A'oluiiic (liters): 1800 Lab Group 7538 Filter Type 1 iter Area: MCE 385 mm^ Lab Sample #: 12 Grid Opi ning Size: 0.01124

Client Sample #: 14 An^Exmrmied: 0.04496 mm^ GRID BOX: ■M.igiiilleation: 20,000 GRID ID: Accelei tiring Voltage: too KeV # Grid Openings: 4 .Vil.thsis Date: 4/25/02

Analysis Performed By: MARK PEYSAKHOV

GO. j Structure Structure Type Length ID .f -irjcture Nors EDS No (Nonadb F B ■ C • M >=05 M >=5p Chrys Amphi! ' Nonasb Ambig/ND No Coord <5p Elements)

2D '------- J

+I +I t -i-

Struct = > i).5p >5:1 Aspect Ratio Gric! acceptance: x/= Positive diffraction pattern properties conforming to <50 "o undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10 "i. particulate coverage >50% coverage ate leas- 20 unfolded or overlapped grid squares <5% f EDS spectrum conforming to laboratory hoir-3 or opaque areas : I B C M ’5u

identification criteria observer .lie [ ..-■IPHIBOLES .r tie ’ F = Single Fiber Amosite 8 = Bundle ■'<3 fibers <1 fiber diameter apart Crocidolite 41S

C = Cluster (>3 Inlersectionsl Anthophyllite Noi!- .. -.CMOS Tremolite M = Matrix Actinolite , Non , ._ NSD = No SIructures Detecteo

CITY_21MC1OO_OO287963O

NYC-WTC_000219288