NYC-WTC_000207336

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC DOE Volume (liters): 1920, Lab Group #: 7977 ■ Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 18-- - Grid Opening Size: 0.01124

Client Sample #: T8 Area'Examined: 0,04496' mm- GRID BOX: Magnification: , 2O;OO0 GRID ID: Accelerating Voltage: lOO’KeV # Grid Openings: 4 .. Analysis Date: 6/5/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. structure Structure Type -Length ID of Structure Nory ■ EDS No (Nonadb F -B C M >=05 p , I :>=5m Chrys Amphibole Nonasb Ambig/ND . No Coord <5p Elements)

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- Struct = > 0.5p > 54 Aspect Ratio Grid acceptance: " Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria obsen/ed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5iJ ; '/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite ■ M = Matrix Actinolite Non-Identified . ■ I NSD = No Structures Detected

CITY_21MC100_003015017

NYC-WTC_000207336