NYC-WTC_000212401

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet j~(?lient Name: NYC BOE Volume (liters): 1920 Lab Group #: 7344 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: ’lO" Grid Opening Size: 0.01124 t (?lient Sample #: 10 Area Examined: 0.04496 mm^

GRID BOX: ___ Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/6/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N orv EDS No Nonasb - -AmbigyND (Nonadb F B C M —>=05 M - >=5p Chrys Amphitxjte No Coord <5m Elements)

Struct = > 0 5(1 > 5'. I Aspect Ratio Gtia acceptance. ■J- Positive diffraction pattern properties conlorming Io <50% undissoived filter, overlapped or folded Totals latioratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5m EDS spectrum conforming to laboratory holes or opaque areas identification cnieria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 0 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections! Anthophyllite Non-Asbestos Tremolite M - Matnx Non-Identified Actinolite NSC = No Structures Detected

CITY_21MC100_0 02866392

NYC-WTC_000212401