NYC-WTC_000202847

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3700 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 13 Grid Opening Size: 0.01124

Client Sample #: 13 Area Examined: 0.24728 mm*

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or 'J EDS (Nonadb No F B C M >=05 p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

7^ zZ

//

// 77” KJ <073 //

PhoEo No. (from 1 in 5 asbestos containing samples) acceptance struct = > 0.5p > 5:1 Aspect Ratio undissolved filter, overlapped orfolded Totals \ = Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overiapped grid squares <5% f ____________ i F B C i M i >5m holes or opaque areas 'J = EDS scectrurri conforming to laboratory Chrysotile oentification criteria observed AMPHIBOLES Amphibole ; F = Single Fiber Amosite e = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I C = Ciuster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matnx Non-Identified Actinolite NSD = Mo Structures Detected

CITY_21MC100_003069324

NYC-WTC_000202859