NYC-WTC_000204249

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Siteet Client Name: NYC BOE lime (liters): 1816 Lab Group #: 7345 Filter Type ! liter Area: MCE 385 mm^ Lab Sample #: 14 Grid < jning Size: 0.01124

Client Sample #: 17 Ale examined: 0.04496 mm^

GRID BOX: ' iiification: 20,000 GRID ID: Accel I-1.1 ti ig Voltage: 100 KeV # Grid Openings: 4 Hi lysis Date: 4/6/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length nocture Nor v EDS (Nonadb No F B C M >=05 M >=5p Chrys i Amp:,: Nonasb Ambig/ND No Coord Elements) <5p

,----- <5

Struct = > 0,5p > 5:1 Aspect Ratio Grid acceptance:

Positive diffraction pattern properties conforming to <50% undissolved filter, overiapoed or folded Totals <10% particulate coverage >50% coverage ate laboratory Identification criteria observed least 2C unfolded or overlapped grid squares <5% i F B C M >5p EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed sotile ■AMPHIBOLES iibole F = Single Fiber Amosite 2UOUS B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthophyllite lestos Tremolite M = Matrix Actinolite N. titled NSD = No Structures Detected

CITY_21MC100_003060022

NYC-WTC_000204249