Legal hold notice for WTC documents, undated

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Renala Cconsulting Savices, Inc. I I

304 Edgemont Terrace Teaneck NJ 07666 201 692 7967 fax 201 678 1789 NYC-WTC_000148336

Certificate of Analysis Client: Riverpoint, Inc Project Location: WTC, NYC Analysis Date: October 7, 2001 Client #: 101171 Work Area: N/A RCS Project # 097 718 595 4690 P.03/05 NYC 9/11 Public Portal Document

PCM Air Sample Analysis Summary Les ID Sample Description Date Flow Rate Duration Volume Fibers Fickis Demily Fiber Conc. CollectedDiera/min. Fibainn' "Fiberkcc 2548 011007 Park Place and Church 10/7/01 15.00 45 675 6 100 7.6 0.004 2546 021007 Park Place and Greenwich 10/7/01 15.00 45 675 7 100 8.92 0.005 2549 031007 Murray and Church 10/7/01 14.50 45 652.5 6.5 100 8.28 0.005 2547 041007 Murray and Greenwich 10/7/01 14.25 45 841.25 4 100 5.10 <LOD 2556 051007 Fulton and Church 10/7/01 15.00 48 720 20.5 100 26.11 0.014 2544 061007 Warren and North End 10/7/01 14.50 45 652.5 3 100 <LOD 2545 071007 West Street and Warren 3.82 10/7/01 15.00 45 B75 4 100 5.10 <LOD 2557 081007 Galeway Plaza 10/7101 15.00 45 675 7.5 100 9.55 0.005 2558 091007 South End Avenue and Albany 10/7/01 15.00 49 735 3 100 3.82 <LOD 2559 101009 West and Albany 10/7/01 15.00 46 890 6 100 7.64 0.004 2554 111007 Rector Place by park 10/7/01 14.75 51 752.25 4 100 5.10 <LOD · 2552 121007 3rd Place and West End and Waterside 10/7/01 15.00 51 765 4 100 5.10 <LOD 2553 131007 West end of Wl'est Thanes 10/7/01 15.00 51 765 100 5.10 2542 141007 Park Place and River Terrace <LOD 10/7/01 14.75 45 683.75 3.5 100 4.46 <LOD 2540 151007 River Tenace and Chambers 15.00 45 5 10/7/01 675 100 8.37 <LOD 2541 161007 |River Terrace and Warren 10/7/01 15.00 45 675 4 100 5.10 <LOD 2543 171007 North End and Park Place 10/7/01 15.00 45 675 2 100 2.55 <LOD NYCDEP DERTA 2539 181007 Vesey and River Terrace 10/7/01 14.50 45 652.5 1 100 1.27 LOD 2555 191007 Trinily Place and Thames 10/7/01 15.00 51 765 5.5 100 7.01 0.004 2560 201007 Vesey and West Broadway 10/7/01 14.50 58 841 14 100 17.83 0.008 2550 FB1 Field Blank 1 10/7/01 0.00 0 0 0 100 2551 FB2 10 0.00 N/A Field Blank 2 10/7/01 0.00 0 0 100 0.00 N/A 11:40 ELAP ID No. 11750 Expires 12:01 AM, April 1, 2002 Analysis Method: Phase Contrast Microscopy, NIOSH Method 7400 Limit of Quantitation (LOQ) = 102 [Fiber/mm2] Limit of Detection (LOD) = 7 [Fiber/mm']

Analysis Performed By: Munk all OCT-09-2001 Marck Pawlik Laboratory Director !