Chain of custody form, 21 West Street, Nov 2001

NYC 9/11 Public Portal Document FEB-28-2002 THU 11:08 AM CLOSINGS ® ROSE FAX NO. 212 210 6724 P. 17/42

JLC ENVIRONMENTAL CONSULTANTS, INC. 200 Park Avenue South, suite 1001, Now York, New York 10003 • Phone: (212) 420-8119 Fax: (212) 420-6092 Pr000ct No,: 01.200e004 Rotas A cc4ate lrto, ELAP Lab Ccde: 11029 Analyts: F15ERS 210 Madirwn Avr. all. Piuur NIOSH and AIt1A tab Code: 100273 Date Received; 1W25f2001 No* York, NY 10016 NVLAP Lab Code: 101953 Date Analyzed; 10/25/2001 SUMMARY OF ANALYTICAL RESULTS Sati:h #: 0110A824 .. .. Sit©; 27 West Sttset, New York, NY Z*:IiI •.. _ T i_ &AMPLE >ir COLLECTED DESCRIPTION / LOCATION TIME(min) VOLUME(i) FIBIFIELo RESULTS(flae)

013 Ambient/ 11 th Floor/ Apt. 11C/ At the North 120 1846 6/100 0,Q02 24-0cto1or Section of the Living Room A 0010

014 Ambient/ 11th Floor/ Hallway Between Apt. P H 120 1848 4/100 f 11 a LQD 24.0ciobcf and 11J A $317

015 Ambient/ 9th Floor! Apt, ON! At the North Section 120 1 R40 S/100 '0,041 j.OD 24-Ooiaaor of the Living Room

018 Ambient/ 9th Flo or t Hallway Between Apt. OH and 120 1846 4/1 UO OA01 <LQ~ 24.Oolober OJ A 43114

017 Ambient/ 8th Floor/ Apt. 8E/ At the North Section 120 1846 3/100 5&Q01SLOD • 24-October of thra I ivirul Room A Ei320

018 Ambient/ 8th Floor! Hallway Between Apt. 8H and 120 1846 4/100 {1001sL[iD 2q C1~lobt,t 8,! A 8.-121

arr4dIa An;~l}xi,;ley. <LOD Less than limit of detection which is 8,5 fibers/ 100 Fields Pos!tiv4 f' so Contrast Microscory (PCM) VOID1 = I i.o,P. (Hi ii i Cuui. n►Uation of Partidgs) VOID2 = Ovarteaded • Mfrlho—e—miSemcJo. Pronaratign and AnoN..rie: Ali smplsi analyzed in accordance with the N1OSH 7400 Method using "A" Counting Rules. Issue 2, August 1994 Inalrun _eni ItiJ, ; Olympus POM BI-l-2 011 Willon-Beckett Graticule (100um field diameter), ula OC Laboratory Director

Report Date: November 8, 2001 = JLC hi re6ponsiblee for only the fiber counts Htilhln the limitations of the method described as NIOSH 7400. Among other limitations, gives onN an Index of alrbome fibers and provides only n estimate of whagtos concentration. Any and all alalme pricing of JLC's Ibis metho these satnpiem are limited In recovery to the cost of analyzing samples. JLC accepts no other liability and the client agreesout atyaiyaii to seek no costs bi the above. lingo 8 of 5

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