NYC-WTC_000210534

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: Airtek Volume (liters): 1250 Lab Group #: 6141 Filter Type / Filter Area: MCE 385 mm- Lab Sample 11 Grid Opening Size: 0.01124 Client Sample #: 021 Area Examined: 0.06744 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 6 Analysis Date: 12/18/01

Analysis Performed By: ROMAN PEYSAKHOV

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

31^ _L_ // — II

3

Struct = > 0.5p >5:1 Aspect Ratio Grit) acceptance: '/= Positive diffraction pattern properties contorming to <50% undissolved fiiter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5m 'I- EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ; AMPHIBOLES ) Amphibole F = Single Rber Amosite i 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ' Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite I M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_DEP_WORBY_CANNATA_SUBP_000021365

NYC-WTC_000210534