Document fragment from DEP Box 53 regarding West Street

NYC 9/11 Public Portal Document 12:28 D )C r. OCT-18-2001 101 i t 25itt Sireet New 'YorK. New, `lnry 10010 %A W'U r.vro cr 7.12 353S28O F;x 212.353,8306 ..tom • h -a ~' K`~~j ASS 0 C I A T F S I N C.

October 15, 2001 N

■ A•i'C r,ssoc_cttes Inc. 101 25th S'-icet_ ■ j. w 'io! -k, NY 10010 pit tr: _ Mr. James Colin

R' : Report or '('EM Ana1y3 -s 'oil. Nir. Cohr_,

t'-'G?1$tSl:ssion clecrron microscopy (TEM) 11~vf:nca are the results o 5s96: ■ ar:aiyeis of i:wo PCM Air samples from our Group No.

C ient : Bee' n r.4Fr_t Name: Marrioe hotel, WTC Lor ac Ion: Cafeteria • =amp1rr5 received in TEM L3b: 2.0/15/01 data t'raxisra~.tted :o you These results will co_. irm ar:~ dvcumant the Conform rtCe with r_i'1 _cday. The arialyses were performer in s_riCL anethod :issue 2, RL'tlust 15, 19?4 . :n=_r_ Q.cgj of for NT05'_. /402.

■ o.r. ty openings from SaC.h of the satnp_e3 Were examined grid re ;!--is/e Y low magriificati~ l (approxitnatelyi ' ,00O2 :rid 10,000X) hetween 0.25m for striwcrureS are-acer than sum in length and widths mater than 3:1. rd 3ucn, nd having a l t?11G'Ch"1; -wwidth ratio PCi? large arg n gh 4 be Ok:y'P,. t' d by ■ -h se Ptructure:s we d hre anaiyS,.s.

■ + ware- der.ected in thr.- sarnr_1's ■ Asber-, os and rion-asbestov srructl..res in t he fc1 ].owing proportions:

aatt7i I1rrot:-e =z1uJo~c aypsurr fiber r/CC as 1a N 0.0s F4.2 5.6 29.G°: :0.0 04 15.6k e 34.4 25.0 25.0a 0.0023

■ r. ■ = consequercce. both sample do not er...'wed 0.01 CC As as e8i-, o .

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NYC-WTC 000131269