NYC-WTC_000222802

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet ClientNam^ NYC BOE Volume (liters): 1832 Lab Group #: 6933 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 18 Grid Opening Size: 0.01124 Client Sample #: 21 * Area Examined: 0.04496 mm-

GRID BOX: iVlamiifieation: 20,000 GRID ID: J Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/5/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS i ■ No ■■■(Nonadb i F B C M >=05 p >=5jj Chrys Amphibole ' Nonaid Ambig/ND // / No Coord Elements) I <5|J --------- j--------- 775^

J Struct = > 0.5p > 5:1 A.spect Ratio Grid acceptance: \'= 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% F B C M >5p v= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ■AMPHIBOLES .Amphibole F : Single Finer Amosite 0 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ■Ambiguous

C = Cluster i>3 Intersections! Anthophyllite Non-Asbcstos M = Matrix Tremolite Actinolite Non-ldeinilled NSC = No Structures Detected

CITY_21MC100_002918947

NYC-WTC_000222802