NYC-WTC_000178972

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1832 Lab Group #; 7987 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #; 3 Grid Opening Size: 0.01124 Client Sample #; 06 Area Examined: 0.04496 mm-

GRWBOX: Magnification; 20,000 GRID ID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/6/02

Analysis Performed By: — MARKPEYSAKHOV

! GO. Structure structure Type Length ID of Structure N or V EDS No (Nonadb F B C M >=5m Chrys Ampiibole Nonasb AmOig/ND !No! Coord <5p Elements) i-—I-----------

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M i—I I—r i—I-

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Struct => 0.5p-> 5:1 Aspect Ratio Grid acceptance: ^3 Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped Of fotded Totals laboratory idenlificalion criteria observed <10% particulate coverage >50% coverage ale Mffit 20 unfolded or overlapped grid squares <S% F B C M >5m ' '/< EOS spectrum conforming to laboratory hol« or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F > Single Fiber Amosite B : Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C > Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Delected

CONFIDENTIAL, CITy_21MC100_003456505 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000178974