NYC-WTC_000228464

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7321 Filter Type - Filter Ar ea: MCE 385 Lab Sample #: 6 Grid Opening Size: 0.01124

Client Sample #: 6 .Area Exam in ed: 0.04496 rnm-

GRID BOX: Magnification: 20.000 GRID IP: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/4/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure \ or si' EDS ; No (Nonadb F B C M >=05 p ->=5|j Chrys j Ampmbole Nonasc Amoig/ND No Coord <5p Elements) --------- 1----------- ---------------- I1------------------- g- I ------------ 1-------------- I

Struct = > i5p > 5; I Aspect Ratto Grid acceptance: 'i- Positive diffracfion pattern properties conforming to <5C% undissolved Altar, overlapped or folded Totals laboratory identiScalion criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% f F B S C M >5y EDS spectrum conforming to taboratory identification triteria obsen/ed holes or opaque areas AMPHIBOLES I Chrysotile I I Amphiboiu F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite 1 .Ambiguous C ’ Cluster (>3 Intersections) Anthophyllite \un-Asbestos Tremolite M ’ Matrix Actinolite . W'li-ldentifieJ NSD: No StTJCtures Detected

( CITY_21MC100_002900680

NYC-WTC_000228464