NYC-WTC_000223436

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYCBOE Volume (liters): 1920 Lab Group #: 6068 Filter Tvpe / Filter Area: MCE 385 mm- Lab Sample #: 7 Grid Opening Size: 0.01124

Client Sample #: 09 Area Exaniined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID DP: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1'2/9/01

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS No >=05 p (Nonadb F B C M Chrys ' AmphibDie Nonasb Ambig/ND No Coord •<5p Elements)

ZZ3I x W /CA------

Struct = > 0.5p > 5:1 Aspect Ratio • Grid acceptance: Positive diffraction pattern propenies conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed . <10% particulate coverage >50% coverage ate

>/= EDS spectrum conforming to laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% holes or opaque areas _____ K B C M Chrysotile j >5p

: AMPHIBOLES j Amphibole j F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous” I C = Cluster t>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identifled Actinolite NSD = No Structures Detected

CITY_21MC1OO_OO289O651

NYC-WTC_000223436