NYC-WTC_000230432

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7033 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 2 Grid Opening Size: 0.01124

Client Sample #: 04 Area Examined: 0.04496 mm-

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

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure NorV EDS (Nonadb No F B C M >=5p Chrys Amphibole Nonasb Ambig/ND 2^ Coord <5u Elements)

z If

Struct = > 0 5n > 5:1 Aspect Ratio Grid acceptance:

v= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification cntena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% v= EDS spectrum conforming to laboratory holes or opaque areas ______ P B I C i M ! >5u identification criteria observed Clirysotile j AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 rtersectionsi Anthophyllite Non-Asbcstos I Tremolite M = Matnx Non-Identified , NSD = No Structures Detected Actinolite J J

CONFIDENTIAL, CITY_21MC100_003389237 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230432