NYC-WTC_000229050

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lab Group #: 7847 Filter Type / Filter Area: MCE 385 mm-' Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 18 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/23/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure type Length ID of Structure N or N EDS (Noradb No F 8 C M >=05 p :>=5m Chrys Ampfi axils Nonasb Ambig/ND No Coord <5m Etemente)

.! -27 O-

Struct = > O-Sp >5:1 Aspect Ratio Grid acceptance: PcsiPvB dilfractiOTi pattern properties conforming to <50% uixfosolved fitter, ovwlapped or folded Totals laboratoty identificatton criteria observed <10% parttculaa coverage >50% coverage ate least M unfoWed or overlapped grid scuares <5% F B C M >5(J EDS spectcum conforming to laboratory holes or opaque areas identifeation cntena observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Antfiophytllte Non-Asbcstos Tremolite M s Walra Actinolite Non-ldenrified NSO = No Structures Detected

CITY_21MC100_002902105

NYC-WTC_000229050