NYC-WTC_000223659

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE V olume (liters): 1920 Lab Group #: 7358 Filter Type / Filter Area: MCE 385 mm- Lab Sample 1 Grid Opening Size: 0.01124 Client Sample #: 01 Area Examined: 0,04496 mm*

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/8/02 ,

Analysis Performed By: MARK PEYSAKHOV

GO. structure Structure Type Length ID of Structure \ or ESS iNoraab No Coord No F B c M >=05 p ! <5m >=5p Chrys Amphibole Nonasb ) Ambg/ND ) :;eTenBi

.---- - --- -e-z

Struct = » O.op >5:1 Aspect Ratio Gnd acceptance;

NX; Positive diffraction pattern properties conforming to <50% undissolvefl filter, overlapped or folflea Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% f F ’ B ; C M V= EDS spectrum conforming to laboratory holes or opaque areas laentification criteria observed Chrysotile AMPHIBOLES Amphibole , - Single Tiber Amosite 3 = Bundle i<3 fibers <1 fiber diameter apait Crocidolite Ambiguous C - Cluster (>j Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-ldentified NSC = No Structures Detected

CITY_21MC100_002919703

NYC-WTC_000223659