NYC-WTC_000188449

NYC 9/11 Public Portal Document TEM Asbestos (air) Count Sheet Client Name: NYC BOE Lab Group #: 7872 Lab Sample #: 18 Client Sample #: 21 GRID ID: LEK. # Grid Openings: 4 Filter Type / Filter Area: Accelerating Voltage: 1824 MCE 385 mm? 0.01124 0.04496 mm? Volume (liters): Grid Opening Size: Area Examined: Magnification: 20,000 100 KeV 5/25/02 We, Analysis Date: Analysis Performed By: . ROMAN PEYSAKHOV GO. Structure | Structure Type Length 1D of Structure Nor V EDS — No 2205 = Amphibole | Nonasb | Ambigino | _‘Nonadb No Coord FYB) Cy My) er | 8B | Chrys | Amen Elements) JE £Ez ZV VE «4 — Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: 41 Positive diffraction pattem properties conforming to “50% undissolved fiter, overtapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% FIBICIM] > V= EDS spectrum conforming to laboratory holes or opaque areas . identification criteria observed Chrysotile F = Single Fiber Amosite : B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyilite Non- Asbestos rae Tremolite = M = Matrix Actinolite Non-Identified NSD = No Structures Detected NYC-WTC_000188466 CITY_21MC100_003080574