NYC-WTC_000218397

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7029 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 10 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0.04496 mm-’

GRID BOX: Magnification: 20,000 GRID ID: Accelerating V'oltage: 100 KeV # Grid Openings: 4 Analysis Date: 3'11/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID ol Structure N or < EDS No (Nonadb F B C M >=05 p i>=5pi Chrys Amphibole Nonasb Ambig/ND No Coord <5U Elements) *3^ ! ES2 —If ~T(

Struct = > 0.5p .> 5:1 Aspect Ratio Gnd aaeptance; A- Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Totals laooratory Identification chteria observed <10% paniculate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% { F ] B ! C i M i EDS spectrum conforming to laboratory holes or opaque areas identification chteria observed Chrysotile i AMPHIBOLES Amphibole i A = Single Alber Amosite E » Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous i

C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos I ) Tremolite M = Matrix Non-ldcntificJ , Actinolite i___________________ ______ i NSD = No Structures Detected

CITY_21MC100_002878364

NYC-WTC_000218397