Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

TEM ANALYSIS ATC ASSOCIATES INC. - 10/25/01 LAB GROUP #• 5761 - operator mm Filter Type MCE 25

I Lab Sample No. Client Spl. No. 26 62199 Filter Area Grid I.D. Disk No.

Comments Instrument I.D. EM 10 CRX 0 01124 mm"2 (GO) Area d. to 70 s mmm"' ' 16 0OX 4.721 StrUCt. COZS Screen Magnification Li Acc. Voltage 80 kV No. Go to be Analyzed 6

I.D. of Structure N er ~/ (Nonasb. EDS

structure Length Elements Nonasb. Ambig./ND

I um Chr s. Amphibole Amp

I;; U

1 I

i .== J

Chi (let 4) asbestos- Identity all etrGCtures etr Photo No. Tram 1 in S ptanca:Os e' containi nL samples) <50X un dissolve r. "- Ratio parueulate coverage >507f coverae > 0.5um & > 5:1 Aspect <10% unfolded or overlapped grid e9uares Struct = at least 20 spectrum or dtltnetlon pattern) N. Not Observed (BDS <5% holes or o • ue areas FoullydlflneUon Pattern Pr°Pert, e°nforminI onaead PO1uO° ✓a to laboratory Ideat/tleatlon criteria oWarvad. reflections. of flltar Avoided peruse Chrysotile

►es 0.90am seating for (020) sw~ng °n span O~~gpm for the la7sr as nPal of ttlter Amphibole of (LID) and(30) rsee Poruon of filter (2mm vide) and apprea. o.e7nm layer Itea repeat.pastes .abi.et m For ampblbolsa: -twinned layer ilea spat .saminsuon 8.4 ratio of non dtatanca (O.33em)• Ambiguous 1Ins repeat layer conformin• to laboratory i . H1BOI.ES SDS appeeccrom idenuftaaU°n criteria observed. AnlOSI e Non—asbesto! as = 1-3 llbers) (1-3 latan.clidiameter 26mm fl1Ur ClOCld011te Fa Single Fiber <1 fiber apart) Aflthophyllite e= Bundle (>3 fibers InterseCuens) •^ stopping Rau1t C= Cluster (>0 at 4 C.O. Tremolite n(on _Identified NYC-WTC 000104209