NYC-WTC_000202847

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3700 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm= Lab Sample #: 23 Grid Opening Size: 0.01124

Client Sample #: 23 Area Examined: 0.24728 mm’

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or y EDS (Nonadb No F B C M >=05 M i>=5iJ Chrys Amphibole Norasb Ambig/ND No Coord <5p Elements)

94 H vi A X 2’- 3 7 £ 9 Pg. fe y

a/ CLi

................... \ ■' Photo No. ;trom 1 in 5 asbestos containing samples) Grid acceptance; Struct = > 0.5p .> 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals y = Positive diffraction pattern progenies conforming to <10% particulate coverage >50% coverage ate laooratory identification criteria observed least 20 unfolded or ovenapoeo gnd squares <5% f B j C i M ) >5p holes or opaque areas ' F V = EDS spectrum conforming to laboratory Chrysotile icentification cnteria ooservefl AMPHIBOLES r = Single r^ber Amosite Amphibole I 3 = Bundle (<3 fibers <1 liber diameter apart Crocidolite Ambiguous i C = Cluster ;>3 intersections) Anthophyllite Non-Asbestos j Tremolite M = Matrix ! Non-ldentified i Actinolite L_., NSC = No Structures Detected

CITY_21MC100_003069334

NYC-WTC_000202869