NYC-WTC_000230444

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lab Group #: 7033 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 17 Grid Opening Size: 0.01124 Client Sample #: 19 Area Examined: 0.04496

GRID BOX; Magnification: 20 000 GRID ID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/12/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor \ EDS ; No (Nonadb I F B C M >=05 p i>=5p Chrys Amphibole Nonasb AmbigyND No Coord <5m Elements) ■

Struct = > 0.5g ? 5:1 Aspect Ratio Grid acceptance: >i'= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% i F B ; C : M i EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle! <3 fibers <1 fiber diameter apart Crocidolite Ambiguous I

C = Cluster (>3 Intersections) M = Matnx Anthophyllite Tremolite Actinolite Non-Asbestos i Non-Identified j I NSO = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003389252 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230444