NYC-WTC_000197144

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 Lab Group #: 7094 Filter Type / Filter Area: MCE 385 mm^ Lab Sample#: 12 Grid Opening Size: 0.01124 Client Sample #: 14 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/16/02

Analysis Performed By: MARK PEYSAKHOV

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

Struct = > O.Sp > 5:1 Aspect Ratio Grid acceptance: >1- Positive diffraction pattern properties conforming to ^50% undissolved filter, overlapped or folded Totals ___ laboratory identification -I_______ criteria observedJ <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped gnd squares <5% F B C M >5u >1= EDS spectrum conforming to laboratory holes or opaque areas identification critena observed Chrysotile i AMPHIBOLES Amphibole F = Single Fiber I Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) ! Anthophyllite Non-Asbestos ! Tremolite M = Matrix Non-Identified Actinolite ___ J___ NSD = No Structures Detected

CITY_21MC100_003044562

NYC-WTC_000197144