TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: mT BOE Volume (liters): 1936 Lab Group #: 6028 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: ■) Grid Opening Size: 0.01124 Client Sample #: 2 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: IS Accelerating Voltage: ] 00 KeV # Grid Openings: 4 Analysis Date: 12/4/01

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N oi EDE No (Nonadb F B C M >=05 p >=5|j Chrys Amphibole Nonasb Ambig/ND ho Coord <6u Elements)

USS _!/____ s ZTE t/ C

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: x/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ale least 20 unfolded or overlapped grid squares <5% fTb c M >5u EDE spectrum conforming to laboratory identification criteria observed holes or opaque areas Chrysotile -4— ; AMPHIBOLES i Amphibole F = Single Fiber ■ Amosite S = Bundle (<3 fibers <1 fiber diameter apar. ' Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos ; T remoiite W = Matrix Actinolite Non-Identified NSD = No Structures Detected __

CITY_21MC100_003104465

NYC-WTC_000183982