NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3600 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 Lab Sample #: 35 Grid Opening Size: 0.01124

Client Sample #: 35 Area Examined: 0.24728 mm^

GRID BOX: Magnification: 20,000 GRID ID: 35-23 Accelerating Voltage: 100 KeV # Grid Openings: 22 AnalysisDate: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS {Nonadb No F B C M >=05 p :>=5m Chrys Amphibole Nonasb Ambig/ND ■ No I Coord <5p Elements)

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^3 :-------- L I 1 i ' Photo No. ' from 1 n 5 asbestos containing samples) Gna acceptance: Struct = > O.Sui ,> 5:1 Aspect Ratio <50% undissolved filler, overiapped or folded Tot^s v = Positive diffraction pattern prooerties conforming to <10% particulate coverage >50% coverage ate laboratory idenbficauon criteria obser'yeO least 20 unfolded or overlapped gnd squares <5% f F i B i C ; M i >5P holes or opaque areas y = EDS spectrum conforming to laboratory Chrysotile identification criteria observed AMPHIBOLES Amphibole F : Single Fiber Amosite S = 3un0le (<3 fibers <1 fiber diameter apart Crociaolite Ambiguous C = Cluster (>3 intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix ' Non-Identitied Actinolite K or, - 5tn,p,,,fp5 Detected

NYC-WTC_000202924 CrTY_21MC100_003069468