NYC-WTC_000228886

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #; 7723 Filter Type / Filter Area: MCE 385 mm" Lab .Sample 16 Grid Opening Size: 0.01124 Client Sample #: 18 Area Examined: 0.04496 mm"

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/12/02

Analysis Performed By; MARK PEYSAKHOV

GO. Structure Structure Type Length 10 of Structure N or V EDS I No (Nonadb F B C M >=05 p >=5)1 Chrys Ampiiibote Nonasb Arnbg/NQ No Coord ■sSp Elements) )

/ X~<g

Struct = > 0.5)1 >5:1 Aspect Ratio Grid acceptance; '/= Positire diffraction pattern properties oonfenffng tc <50% undissolved filter, overlapped or folded Totals laboratory identificaSon criteria observed <10% padtcuiate coverage >50% coverage ate least 20 unfolded or oveitapped grid squares <5% F B C M >5m EDS Spectrum ccnforming to latxxatory holes or opaque areas idenliflcation criteria observed Chrysotile AMPHIBOLES Amphibole F - Single Fiber Amosite B Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Ctusler (>3 Intersections) Anthophyllite Non-Asbesros Tremolite M = Matrx Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002901841

NYC-WTC_000228886