NYC-WTC_000228928

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volamc (liters): 1800 Lab Group #: 7750 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #.• 13 Grid Opening Size: 0.01124 Client Sample #: 15 Area Examined: 0,04496 mm’ GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/15/02

Analysis Performed Bv; ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS No Nonasfc INonadb i F 6 C M >=05 p >=5)J Ghrys Amphibole AmbigWD No Coord <5p ESements) i ---------- 1

Struct = > 0.5n >5:1 Aspect Ratio Grid accaptanee: 'I = rMitve diffracfiffli pattern properties conforming to <50% undissohred filter, wertepped or folded Totals laboratory identificaben critena observed <10% particulate coverage >50% coverage ate least 20 unfoWaJ ot overlapped grid squares <5% F B C M >5y ■ '/= EDS spaorum canformlng to laboratoy holes or opaque areas identification crite-ia oBsetved Chrysotile amphiboles Amphibole F = Singie Fiber Amosite B = Bundle (<3 fibers <1 liber diameter apart Crocidolite Ambiguous C = Cluster {>3 InKrsectkms) Anthophyllite Non-Asbestos Tremolite M = Mato USD = No Structures Detected Actinolite Non-Identified Zf CITY_21MC100_002901910

NYC-WTC_000228928