NYC-WTC_000230439

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 #: II Grid Opening Size: 0.01124 Client Sample #: 13 Area Examined: 0.04496 mm-

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 bl Structure N or 'I EDS No (Nonadb F B C M >=05 0 >=5p Chrys Amphibole Nonasb AmbigyND Elements) No ^oord <5tJ

55^7 V 7/ T /Z'

Struct =>> 0.5(1 >5:1 Aspect Ratio Grid acceptance: y- 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% 1 F B C I M i >5u >/= EDS spectrum conforming to laboratory holes or opaque areas _______ 1------ i__ _ identification criteria observed Chrysotile AMPHIBOLES Amphibole i F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous j C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos I Tremolite M = Matrix Actinolite Non-Identified i NSO = No Structures Detected . I... 1 1

CONFIDENTIAL, CITY_21MC100_003389246 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230439