NYC-WTC_000228524

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NN'C BOE Volume (liters): 192S j Lab Group #: '’392 Filter Type / Filter Area: MCE / M mm- Lab Sample #: 5 Grid Opening Size: 0 01124 !

Client Sample #: 07 Area Examined: 0.04496 mm*

GRID BOX . Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV Grid Openings: 4 Analysis Date: 4/13,02

Analysis Performed By: NLARK PEYSAKHOV

GO Structure Structure Type Length ID at Strj~_re N or s (Nonaab No F B cTm >=05 p >=5(j Chrys Amphibole Nonasb AirSgiND Elements) ; No ‘ Coord <5u

C7

Struct = > 0,5p > 5:1 Aspect Ratio Grid acceptance: 'J: Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals laboratory identification criteria observed <10% particulatB coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B C M ’5u '/= EOS spectrum conforming to laboratory holes Of opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite । Non-Asbestos Tremolite I M = Matrix Actinolite Non-Identified NSD = No Structures Detected J

CITY_21MC100_002900871

NYC-WTC_000228524