NYC-WTC_000200529

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8123 Filter Type / Filter Area: MCE 385 mnE Lab Sample #: 3 Grid Opening Size: 0.01124 ^^^^ ^ ^^^^^^^^^^^ ^ ^^ Client Sample #: 03 Area Examined: 0.04496 mm^ Magnificatinn: 20 000 GRID BOX: GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/15/02

Analysis Performed By: ROMAN PEYSAKHOVy

go; ' Structure Structure Type -Length ID of Structure N or A EDS ■ ■ (Nonadb ; < No ; F B C M >=05p I ;>=5iJ Chrys Amphibols Nonasb Ambig/ND r _ No ■■ Coord Elements; < <5p

/Oi 4- 4

3 Struct-= > C.5u > 5:1 Aspect Ratio Grid acceptance: ■ y- Positive diffraction pattern properties canlorming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >5C7o coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p V V- EDS spectrunn conforming to laboratory holes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES I Amphibole r = Single Fiber . Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ' Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite ; M = Matrix , Non-Identificd Actinolite i NSD = No Structures Detected

CITY_21MC100_011274963

NYC-WTC_000200531