NYC-WTC_000203491

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1944 Lab Group #: 9204 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 4 Grid Opening Size: 0.01124

Client Sample #: 4 Area Examined: 0 04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 12/23/200

Analysis Performed By: I

ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure n or EDS (Nonadb No F B C M Chrys Amphibole Nonasb Ambig/ND Elemenis) No Coord <5m V<1 T 3^ 2 _EZ 3 ____ 3 ____

I f

! I A Hhoto No (trom 1 in 5 asoesios containing samples) Gnd acceptance Struct = > 0 Sp >51 Aspect Ratio <50% unoissolved filter. overiaoDad or folded Totals Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification catena observeo least 20 unfolded or overlapped gnd souares >5u I F B C .M <5% holes or opaque areas v’= EDS spectrum conforming to laooratory identification cntena observed Chrysotile I .AMPHIBOLES .Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I Anthophyllite C = Cluster (>3 intersections) I Tremolite Non-Asbestos M = Matnx i Actinolite Non-Identified USD = No Structures Detecteo

CITY_21MC100_003058250

NYC-WTC_000203491