NYC-WTC_000228528

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume ilitersi: 1920 Lab Group #: 7392 Filter Tvpe / Filter Area: MCE ■; 3 mm- Lab Sample #: 10 Grid Opening Size: 0 01124

Client Sample #: 12 Area Examined: 04-196 rim-

GRID BOX: Magnification:20,000 GRIDH): Accelerating 'Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/13/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Stnjcture \ or v (Noflaflb No F B C M >=05 y Chrys Amphibole Nonasb AmC^ND ;No^ Coon) <5m Elements)

a

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: = Positive diffraction pattern properties conforming to <50% undissolved litter, overlapped or lolded Totals laboratory identillcation criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5U A- EOS spectrum conforming Io laboratory holes or opaque areas identification entsria Observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 libera <1 Uber diameter apart i Crocidolite Ambiguous C> Cluster (>3lnteraectiora) I Anthophyllite Non-Asbestos Tremolite M>Malnx Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002900876

NYC-WTC_000228528