NYC-WTC_000218308

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE X'olume (liters): I 920 Lab Group #: 6940 Filter Type / Filter Ai ea: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: O.Ol 124

Client Sample #: 06 Area Examined: 0 04496 mm-

GRID BOX: .Magnification: 20,000 GRID ID: Accelerating Voltage: lOO KeV # Grid Openings: 4 Analysis Date: 3 5 '02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS ; iNonaOC . No F B C M >=05 p >=5m Chrys Amphibole i Nonaso j Amoig/ND No Coord <5m Elements) )

J

Stiiici = > 0.5n > 5 I Aspect Ratio Grid acceptance. N = Positive diffraction pattern properties conforming to "‘50% undissolved filler, overlapped or folded Totals laboratory identification criteria observed *:10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% I F , B j C i M EDS spectrum conlorming to laboratory holes or opaque areas iden’ilication 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 = Matnx Actinolite Non-identified NSD = No Structures Detected

CITY_21MC100_0Ci0466273 NYC-WTC_000218308