NYC-WTC_000207350

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BGE Volume (liters): 1928... Lab Group #: 7985 • Filter Type / Filter Area: MCE" 385 mm^ Lab Sample #: .1-6 Grid Opening Size: 0.01124-' ' - ■

Client Sample #: 16 Area Examined: ' 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/6/02

Analysis Performed By: ■ MARK PEYSAKHOy

GO. . Structure Structure Type Length ID of Structure N or ■ EDS No . (Nonadb , F B C M >=05 p : =5|J Chrys Amphibole Nonasb Ambig/ND Nb Coord <5p Elements)

Struct = > O.Sp > 5; 1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, 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 >5u ; 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 Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003015043

NYC-WTC_000207350