Chain of custody form, 21 West Street, Nov 2001

NYC 9/11 Public Portal Document FEB-28-2002 THU 11 12 AM CLOSINGS 0 ROSE FAX NO. 212 210 6724 P. 24/42

JLC ENVIRONMENTAL CONSULTANTS, INC. 200 Park Avenue South, Suite 1001, New York, New York 10003 Phone: (212) 420-8119 Fax: (212) 420-6082 FroJect No.; 01-2089002 Rose A~eooiatras 1no, ELAP Lab Code: 11029 Anelyte: F(9ER5 2Q0 Wi on Ave, ri1h F Ioor NIOSH and AIHA Lab Code: 100273 Date Received: 10/15/01 New York, NY 16816 NVLAP Lab Coda: 101953 Date Analyzed: 10116101 Batch# 0110A741 SUMMARY OF ANALYTICAL RESULTS Site: f -- 21 West Street, New York, NY

SAMPLE A COi.L.ECTEI] DIESCRiPTiON I LOCATION TIME(min) VOLUME(I) FiSIFIELD RESULTS(Ncc)

4; 013 AtrmUien1/ 8th Floor/ Al the North Section of the 90 1385 4/100 Q01 • 12-Octbr Hallway A 7t25

014 Ambient/ 8th Floor/ At the South Section of the 90 1385 51100 0.OL2 1 a OcinUnr Hallway A 7526

016 Ambient/ 7th Floor/ At the North Section of the 90 1385 41100 0 nni 12-t' tnboi Hallway A 752 r

018 Ambient/ 7th Floor/ At the South Section of t17e 90 13db b/1 UU 0.002 12 Oclaer Hallway (South) ' A 720

017 Ambienll 6th Flood At the South Section of the 90 1385 4/100 0,001 12-Ortnhr+r Hnilwoy A 7529

• ; 018 Ambient/ 8th Floor/ At the North Section of the 90 1385 5/100 0.042 12 4ctobar Hallway A 7630 }

6rim¢~19tnalyGis Irk: LOD = Less than limit of detection which Is 5.5 Ftbere/ 100 Fields Positive Fha o Conli3st Microscopy (PCM) VOI01 t LO.F, (IIlgh Concentration, of iartiLiro) V0102 a Overloaded ' F iet(r+1 or.°s ftlplQ ~r~1l~L3tion'dnd natvsle Al ampfe5 rt.rwlyrsd in accordan4•e with the NIOSH 7400 Method using 'A' Counting Rules, issue 2, August 1994 instrtilrrtiwt~tlpn: La al 8 tW ja Olympus FICM Med' J 8I-l-2 with Walton-aoekatt Graticule mourn field diameter). Laboratory Dirotior Report Date: October 16, 2001 J1-P l' ranpon-, b1a for only the fiber counts wiUlln tiro lintitatlorts of the method described as NIOSH 7400, Among other limltationa, this meth ta~ves oflly an index of ahborne fibers and provides only an estimate of asbestos conoehlraton Any and ail Aare* arising out or J♦_C'e anaiyel these sahnples are limited In recovery to the cost of analyzing samples. JLC accepts no other liability and the client agrees to soak no costs h the abovo. Page 3 of 5

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