NYC-WTC_000230031

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 7162 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 14 Grid Opening Size: 0.01124

Client Sample #: 14 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/21/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure \ Structure Type Length ID of Structure Norv EDS (Nenad b No F B I C M >=05p 1 ■>=5p Chrys Amphibole Nonasb Ambig/ND Bements) ■No Coord <5p

Struct = > 0.5p -> 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to tindissolved filter, overlapped or folded Totals laboratory identiiication criteria observed <10% particulate coverage >50% coverage ale 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 i Amphibole F = Single Fiber Amosite ] B = Bundle (<3 fibers <1 fiber diameter apart i Crocidolite Ambiguous C = Cluster (>3 Intersections) I Anthophyllite Non-Asbestos : T remolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003388640

SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230031