NYC-WTC_000228367

NYC 9/11 Public Portal Document TEM Asbestos (air) Count Sheet Client Name: NSD = No Structures Detected NYC-WTC_000228367 NYC BOE Volume (liters): 1856 Lab Group #: 6431 Filter Type / Filter Area: MCE 385 mm? Lab Sample #: 4 Grid Opening Size: 0.01124 c Chat Sample #; 04 Area Examined: 0.04496 mm? RID BOX: ae éS Magnification: 20,000 CAD ibe ID: Accelerating Voltage: 100 KeV - # Grid amg: 2S Analysis Date: 1/25/02 Analysis Performed By: Rk > ROMAN PEYSAKHOV GO. Structure | Structure Type Length ID of Structure Nor V nes, , No 3205 = Amphibole | Nonasb AmbigiND on No: Coord a. FF; By Cc iM Sp. >=5y Chrys Elements) sa Lye ven 2. N2| ¥ Struct = > 0.5 > 5:1 Aspect Ratio Grid acceptance: Total = Positive diffraction " F <50% undissolved filter, overlapped or folded otals Ratios aceon pat res conforming ° <10% particulate coverage >50% coverage ate ; ; least 20 unfolded or overlapped grid squares <5% FIBiciM | >u V= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed ee Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos . . Tremolite ! - M = Matrix Actinolite | Non-Identified CITY_21MC100_002900067