NYC-WTC_000202404

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYCBOE Volume (liters): 1936 Lab Group #: 8760 Filter Type / Filter Area: , MCE 385 mm^ Lab Sample #: 3 Grid Opening Size: 0.01124 Client Sample #: Area Examined: 0.04496 GRID BOX: 72^ Magnification: 20,000 GRID ID: 2LzlX Accelerating Voltage: TOO KeV #^jTid Oj3ening^ 4 Analysis Date: 8/25/02

Analysis Performed By: ROMAN PE YSAKHOV

GO. Structure Structure Type ■ Length ID of Structure N or 7 EDS ‘ (Nonadb

w£ No F 8 C M ■ >=05 p. 1 >=5p Chrys Amphibole Noiiasb Anibig/ND JNo- Coord Elements) <5p

1

Struct = > 0.5p > 5 1 Aspect Ratio Grid accaptance:

N- Positive diffraction pattern properties ionforming to <50% undissolved filter overlapped or folded Totals laboratory identification criteria observed 7 <10% particulate coverage >50% coverage ate least 20 unfolded or ovenapped grid squares <5% F B C M >5u EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite ' M = Matrix Actinolite Non-Identified NSD = .No Structurss Detected

CITY_21MC100_003272471

NYC-WTC_000202404