NYC-WTC_000204206

NYC 9/11 Public Portal Document TEM Asbestos (air) Count Sheet F = Single Fiber B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) M = Matrix NSD = No Structures Detected NYC-WTC_000204206 AMPHIBOLES Amosite Crocidolite Anthophyllite Tremolite Actinolite Client-Name: NYC BOE Volume (liters): 1816 Lab Group #: 7324 Filter Type / Filter Area: MCE 385 mm? Lab Sample#: 5 Grid Opening Size: 0.01124 Client Sample #: 08 Area Examined: 0.04496 mm? GRID BOX: DO? Magnification: 29 900 GRID ID: FLOR Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/4/02 Analysis Performed By: adam — MARK PEYSAKHOV GO. Structure | Structure Type Length ID of Structure Nor V wr, — No =05 = Amphibole | Nonasb | AmbigiN ona No Coord F/B/]CiM ot >=5u Chrys mphibo jonas mbig/ND Elements) € LO SRE Nb Fe ———— . ~ a 3B ee eg eee aa $$ Z|) : { | . | T i | | | Struct = > 0.5u > 35:1 Aspect Ratio Grid acceptance: V= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals iaboratory identification criteria observed <10% particulate coverage >50% coverage ate ; least 20 unfolded cr overlapped grd squares <5% ] F ] B Cc M >5u V=EDS spectrum conforming to laboratory holes of opadue areas : identification criteria observed Chrysotile Amphibole L Ambiguous | Non-Asbestos Non-Identified CITY_21MC100_003059963