NYC-WTC_000230159

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1960 Lab Group 647" Filter Type ' Filter Area: MCE 385 mm- Lab Sample lO Gjm1jDpmuria S1^ 0..01124

Clienr Sample tf: K.i Area Examined: 0.04496 mm*

GRID BOX: Magnification: 20,000 GRID 11): Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/27/02

Analysis Performed By: .rCrO ROMAN PEYSAKHOV

GO ’ Structure Structure Type Length ID of Structure N or y EDS 1 . No >=05 p (Nonadb F B C •M Chrys Amphibole Nonasb Ambig/ND ; No Coord ) <5p Elements)

ffi- / HZ"__ 7.1 3 p Q

-Z/^ zzzzzzzz

Striicr “ > 0.5.11 >5:1 Aspect Ratio Grid acceptance: '/= Positive diffraction pattern properties conforming to *^0% undissolved filter, overtapped or folded Totals laboratory identibcalion criteria observed *:1O% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u '/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bunole i<3 libers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster !>3 intersectionsi Anthophyllite Non-Asbestos Tremolite M = Matrix Non-ldentified Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003388835 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230159