NYC-WTC_000194625

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count SI Client Name: NYC BOE Vo: .iv (liters): 1944 Lab Group #: 7851 Filter Type / '.er Area: MCE 385 mm^ Lab Sample #: 10 Grid O .ling Size: 0.01124

Client Sample #: 10 Are:, .ciiniiied: 0.04496 mm-

GRID BOX: ' i.'lcatioii: 20,000 GRID ID: Accelerii ; VdIi;;ge: too KeV # Grid Openings: 4 A sisl>.tc; 5/25/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID JUClUtS Tor V EDS (Nonadb No F B C M >=05 p >=5p Chrys Amphibc Non Ambig/ND No Coord <5p Elements)

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Struct = > 0.5u >5:1 Aspect Ratio Grid acceptance: ^/= Positive diffracfion pattern properties conforming to <50% undiss^ed filter, overlap^ or foWed Totals i-u J—___criteria _____ iidentification latioratory ________ observedJ <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p '/= EDS Spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES S Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003096548

NYC-WTC_000194625