NYC-WTC_000229043

NYC 9/11 Public Portal Document Client Name: NYC BOE Lab Group #: 7847 Lab Sample #: 7 Client Sample #: 09 GRID BOX: 116€ GRID ID: 29.5 #Grid Openings: 4 Analysis Performed By: 25 GO. No Coord 1CE 25E 3 FR. Structure No Structure Type FB CM K5O TEM Asbestos (air) Count Sheet Volume (liters): 1800 Filter Type / Filter Area: MCE 385 mm? Grid Opening Size: 0.01124 Area Examined: 0.04496 mm? Magnification: 20,000 Accelerating Voltage: 100 KeV Analysis Date: 5/23/02 MARK PEYSAKHOV Length >=05 p <5N Chrys ID of Structure Nor 7 Amphibole NonasoAnoi MEDS (Nonado Elements) Struct = >0.5p > 5:1 Aspect Ratio V= Positive diffraction pattem properties conforming to laboratory identification critera observed V= EDS spectrum conforming to laboratory identification criteria observed F = Single Fiber B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (s3 Intersectionsi M = Matrix NSD = No Structures Detected Grid acceptance: <50% undissolved filter, overlapped or folded ‹10% particulate coverage ≥50% coverage ate east 20 unfolded or overapped grid squares <5% holes or opaque areas AMPHIBOLES Amosite Crocidolite Anthophyllite Tremolite Actinolite Totals F B CM Chrysotile Amphibole Ambiguous Non-Asbestos Non-IdentifiedT CITY_21MC100_002902096 NYC-WTC_000229043