NYC-WTC_000218143

NYC 9/1 1 Public Portal Document TEM Asbestos (air) Count Sheet NYC BOE Volume (liters): 1944 Lab Group #: 7058 Filter Type / Filter Area: MCE 385 mm? Lab Sample #: 15 Grid Opening Size: 0.01124 Client Sample #: 15 Area Examined: 0.04496 mm? GRID BOX: 92y Magnification: 29 99 GRID ID: aS E- Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/13/02 Analysis Performed By: R/> ROMAN PEYSAKHOV GO. . Structure Structure Type Length ID of Structure Nor Vv nes — No >=05 >= Amphibole | Nonasb | Ambg/ND ona y No Coord FiBiCIM Sp Su Chrys p igh Elements) CBs Lo | , \ ‘ TI i 1 | i } a i | Struct = > 0.5p _> 5:1 Aspect Ratio Grid acceptance: r = Positive ciffract : F <50% undissolved filter, overlapped or folded otals a a pers conforming to <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% FITBITCITMI] >Su V= EDS spectrum conforming to laboratory holes or opaque areas : identification criteria observed Chrysotile i. AMPHIBOLES Amphibole * = Single Fiber Amosite - B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anthophyllite Non-Asbestos — pee Tremolite - M = Matrix Actinolite Non-Identified i NSD = No Structures Detected NYC-WTC_000218143 CITY _21MC100_000465958