NYC-WTC_000201227

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 7291 Filter Type / Filter Area: MCE 385 I i Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 16 Area Examined: 0.04496

GRID BOX: Masnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 ■ Analysis Date: 4/1/02 ,/q Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type [ Length ID Ct Structure N or >/ EDS (Nonadb No 1- B M >=05 pi >=5(J Chrys Amphibole i Nonasb Ambig/ND - No Coord <5p Elements)

/A ' k I -r? 4’ ^ U__ 1 ___

Struct = > 0.5pi > 5:1 Aspect Ratio Grid acceptance:

0= Pcsitive diffraction pattern properties conforming to <50% undissolved tilter, overlapped or folded Totals laboratory identiticgflon criteria obseived <10% particulate coverage >50% coverage ate east 20 unfolded or ovedappec crid squares <5% F B C M 4= EDS spectrum conforming to laboratory doles or opaque areas Identification criteria observed Chrysotile AMPHIBOLES ) Amphibole F = Single Fiber Amosite i B = Bundle !<3 fibers <1 fiber diamete' apart Crocidolite Ambiguous C = Cluster i>3 Intersections) , Anthophyllite Non-Asbestos Tremolite M = Matrix Non-ldentified Actinolite NSD = No Structures Detected

CITY_21MC100_011275503

NYC-WTC_000201242