NYC-WTC_000228535

NYC 9/11 Public Portal Document

TEMAsbestosfairlCounlSheet Client Name: NYC BOL Volume (liters): ■928 j Lab Group #: 7412 Filter Type / Filter Area: MCE 385 mm- ' Lab Santple #: 1 Grid Opening Size: 9.01124

Client Sample #: 01 Area Examined: G 04496 mm-

GRID BOX: Magnification: 20.000 G RID ID : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4 14.02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure type Length ID of Structure N or \ iNonaao No F B C M >=05 y >=5p Chrys Amphibole Nonaso Ambig/ND No Coord <5y i Elements) .

Struct = > 0.5(1 > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Tot^ laboratory dentification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5:; '/= 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 i Non-Identified NSO = No Structures Detected

CITY_21MC100_002900907

NYC-WTC_000228535