NYC-WTC_000228799

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group 7664 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 5 Grid Opening Size: 0.01124 Clieat Sample #: 07 Area Examined: 0.04496 mm’

GRID BOX- lOFTTT fitatton: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/7/02

Analysis Performed By; MARK PEYSAKHOV

GO. Structure Structure Type Length IDofSBucture Nor '/ EOS (AonadD No F B C M >=05 p >=5|J Chrys Amphibole Nooasb AmbigntO No Coord <5p eiemetils)

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i 1 Struct = > 0.5 p > 5:! Aspect Ratio Grid acceptanee: '/= Positive diffracdon pattern properties conforming to uncMsaolved filer, overfapped or folded Totals laboratofy identification criteria observed <10% particulatB coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B C M V= EDS spec&um oonfamting to laboratory boles or opaque areas identtficalioii criteria observed Chrysotile AMPHIBOLES Amphibole F.»Sin8i» Fiber Amosite 8 = Sundie [<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthopfiyilite Non-Asbestos Tremofite M = Matrix Actinolite Non-Idcntified NSD • No SUucturcs Detected

CITY_21MC1OO_OO29O1713

NYC-WTC_000228799