NYC-WTC_000228574

NYC 9/11 Public Portal Document

TEMAsbestoslairlCount Sh^ Client Name: NYC BOE X'olume (liters): 1800 Lab Group #: 7479 Filter Type / Filter Area: MCE 385 Lah Sample #: 8 Grid OpeningSize: 0.01124

Client Sample #; 10 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 4/20/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length iD of Stnjcturs N or 2 i FCS No ' iNonado F B C M >=05 M >=5tJ Chrys ! Amphibole Nonasb Ambig/ND , No Coord <5u Eierrerrts) :

0 — —U—

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: >1: Positive diffraction pattern properties conforming to undissolved filter, overlapped or folded Totals laboratory ic entification criteria observed * 10% particulate coverage >50% coverage ate least 20 unfolded or overiapperJ grid squares <5% i F i B I C 1 >5p EDS spectrum conlorming to laboratory holes or opaque areas idenlificatiori criteria observed Chrysotile ' ! AMPHIBOLES Amphibole I I F = Single Fiber B = Bundle ;<3 fibers <1 fiber diameter apart Amosite Crocidolite Anthophyllite Ambiguous Non-Asbestos rn C Cluster (>3 intersections) Tremolite M = Matrix Actinolite ! Noii-Identified 1. NSO = No Structures Detected

CITY_21MC100_002901058

NYC-WTC_000228574