NYC-WTC_000230158

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client .Name: NYC BOE Volume (liters): 1944 Lab Croup 6477 Filter Type / Filter Area: MCE 385 Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 6 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV S Gritl Openings: 4 Analysis Date: 1/27/02

.Analysis Performed By; ROMAN PEYSAKHOV

GO. i Siructure Structure Type . Length ID of Structure N or EDS (Nonadb No F 3 C M >=05 u i>=5|j ' Chrys Amphibole Nonasb Ambig/ND No Coord ! Elements) <5u ■

(f ef

4^ -

Struct - tl.5u >• 5:1 Aspect Ratio Grid acceptance: >/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identificaiion criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% B C >5p , </= EDS spectrum conforming to laboratory holes or opaque areas ' identification criteria observed Clay so tile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apan Crocidolite Ambiguous C = Clusier(>3 Iniersections) Anthophyllite Non-Asbestos M = Marrix Tremolite Actinolite Non-Identified ■ NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003388831 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230158