NYC-WTC_000182513

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS Lab Sample No. Client Spl. No. 60010 LAS GROUP 5609 - lO/OS/01 Filter Type MCE 25 mm Operator ' .44 SHS-l>10-10/S-03 Filter Area 33S aim"? • Instrument I.D. SM 10 CRX Grid I.D. Disk No. Screen Magnification 16.400X (GO) Area 0.01124 mm^2 Comments Act. Voltage 80 kV No. GO to be .Analyzed 4 < 3.147 Strucr.. Corapd. to 70

GO. Structure Structure Type Length I.D. of Structure EDS (Nonasb.

a Sc No Coord. No. ^0.5 um F B C M < 5 um Sum Chrys. Amphibole Nonasb. Ambig./ND Elements)

(f

//

44

Photo No. (from 1 in 3 as leatoa- Identify all atructures uaing EDS Check diffraction for aabeatoa Store ail unrepeated apectra— containing samples) Grid acceptance:! atructurea up to (let 4) <60% undiaaolved filter, overlapped or folded Struct. = > 0.5um & > 6:1 Aspect Ratio <10X particulate coverage >60% coverage Totals N3 Not Observed (BOS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares <SX holes or aoaoue areas F B C M > 5um Positive diffraction pattern properties conforming to laboratory identification critarla abserved. lused portion ?or chrysoUlo: a.73nm soseiRg for (020) ranecUons, ar niter Chrysotile O.S3nm spaclag for tbs layer line rspeaU atresking ’Avoided portion of (110) and (130) reflaetiona. of filter For amphiboles: (1.53nm layer line repeat, and approx. PorUan of niter {Zmm wide) 3.5 ratio of non-tvinned layer Une spot spacing to subject to sumlnatian Amphibole layer Une repeat dlatanoa (Q.SSnm). 5/^ EDS spectrum conforming to laboratory Identification criteria observed. AMPHIBOLES Ambiguous Fs Single Fiber (1-3 Interaecticns = 1-3 fibers) Amoaite 3s Bundle (>3 fibers <1 fiber diameter aoart) C= Cluster (>3 intersecUana) 2Smm nilar Crocidolite Non-asbestos p. i stopping Buiea; T__— Anthophyllite H= Hatrix NSD= No Structures Detected >90 >/C.O. or in lot 4 D.O. Tremolite Actinolite Non-ldentified L\0ATA\PRIVATE\MIKEC\CADDXrEM3 9/22/08

CITY_21MC100_003099074

NYC-WTC_000182513