NYC-WTC_000210648

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 1300 Lab Group #: 5907 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 4 Area Examined: 0 06744 mm"

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 6 Analysis Date: 11/17/01

Analysis Performed By: MICHAEL GORYCKI

GO Structure Structure Type Length ID of Structure N or v EOS No >=05 u Amphibole (Nonadb I F B C M Chrys Nonaso , Amoig/ND , No Coord <5p Elements)

xSS Fa -U— —U__

I ! ~~ StTUCt = >O5n >5.1 Aspect Ratio Gnd acceptance- N= Positive diffraction pattern properues conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification critena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped gnd squares <5% F B C M >5m y = EDS spectrum conforming to laboratory holes or opaque areas identification catena observed Chrysotile I AMPHIBOLES Amphibole F = Single Fiber Amosite i B = Bunale (<3 fibets <1 fiber diameter apart Crocidolite Ambiguous i C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite L NSD = No Structures Detected

CITY_DEP_WORBY_CANNATA_SUBP_000002819

NYC-WTC_000210648