NYC-WTC_000212546

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet (nientName: NYC BOE Volume (liters): 1928 Lab Group #: 7696 Filter Type / Filter Area: MCE 385 mnE Lab Sample #: 9 Grid Opening Size: 0.01124

Client Sample #: 02 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV Analysis Date: 5/11/02

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or EDS No (Nonadb F B C M >=06 u ;>=5|j Chrys Amphibole Monasb Ambig/ND Mo Coord <5)u Elements) i

g- cr<2? ”7- ----

. -J

struct = > (I.Sp > 5:1 Aspect Ratio Grid acceptance: = Positive diffraction pattern properties conformino to <50% undissolved filter, overlapped ortolded Totals aboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F BIC M >5(j > = EDS spectrum conforminc tc laboratory holes or opaque areas [lentificadon cntena observed Chrysotile AMPHIBOLES Amphibole ■ - Single Fiber Amosite E - Bundle ;<3 fibers <1 fiber Jiameter apart Crocidolite Ambiguous ; Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite ',1 = Matrix Non-Identified Actinolite mSD - . ; Structures Cetectec

CITY_21MC100_002867065

NYC-WTC_0002 12546