NYC-WTC_000214160

NYC 9/11 Public Portal Document

TEM Asb (air) Count Sheet Client Name: NYC BOE Volume (liters): 192" Lab Group 7856 Filter Type / Filter Area: MC< 385 mm-’ Lab Sample #: 4 Grid Opening Size: 0.0' ,24

Client Sample #: 04 Area Examined: 0.04^9(1 mm^

GRID BOX: Magnification: 20,0'70 GRIDID; Accelerating Voltage: 100 :<u-V # Grid Openings: 4 Analysis Date: 5/2? 72

Analysis Performed By: M.\7. 'HYSAKHOV

GO. Structure Structure Type ID of Structure Nor v EDS , No (Nonadb i F B C M >=05 p ’=5M Chrys Amphibole NonasO I Amoigz. 7 No Coord Elements) j <5p

Struct = > 0.5g > 5:1 Aspect Ratio Grit) acceptance: </= Positive diffraction pattern properties conforming to <50% undisi 7 vertapped or folded Totals laboratory idenlifieation criteria observed <10%particui-;: 9 >50% coverage ate leas! 20 untolc pped grid squares <5% M 1 >5p ■'/= EDS spectrum conforming to laboratory holes or opaqi - identification criteria observed Chrysotile i [ ----- 1------ ■AM PH 11 it Amphibole I । F = Single Fiber Anv> : B = Bundle (<3 fibers <1 fiber diameter apart Croc.,: Ambiguous ' C = Cluster (>3 Intersections) AnlllC: Non-Asbestos i : Trc'"' M = Matrix Non-ldentified ACH. NSD “ No Structures Delected

CI TY_2 IMC 1B_O 0 2 8526 7 7

NYC-WTC_000214160