NYC-WTC_000228618

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume (liters); 1800 Lab Group #: 7513 Filter Type / Filter Area: MCE 385 mm- Lab Sample #; 17 Grid Opening Size; 0.01124 Client Sample #; 19 Area Examined; 0.04496 GRIP BOX; Mafinificalioni 20,000 GRID ID; Accelerating Voltage; 100 KeV # Grid Openings; 4 Analysis Date; 4/23/02

Analysis Performed By; MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS j (Nonadb , No F B C >=05 M >=5p Chrys Amphibole Nonasb AmblgyNO No Coord <5m Elements)

J

Struct = > 0.5g >5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped w folded Totals laboratory identification criteria observed <10% partlculale coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p EOS Spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite Crocidolite Ambiguous B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Idcntified NSO = No Structures Delected

CITY_21MC100_002901138

NYC-WTC_000228618