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Renata ces, Inc. fax 201 678 1789 P.05/05 Consulting201Se692rvi7967 304 Edgemmom Terrace Teaneck NJ 07666 TOTAL P.05

Certificate of Analysis NYC-WTC 000148324

Analysis Date: October 8, 2001 Client: Riverpoint, Inc Project Location: WTC, NYC Work Area: N/A RCS Project # 099 Client #: 101171 NYC 9/11 Public Portal Document

718 595 4690 PCM Air Sample Analysis Summary Fiber Fickis Density Fiber Conc. Flow Pile Thanton Volane Sarapie Dracaption [lires] [Fiber/cc] Lab 10) Client ID Colksved 15.00 45 675 13 100 16.56 0.009 10/B/01 2563 011008 Park Place and Church 45 663.75 10 100 12.74 0.007 10/04/01 14.75 2564 031008 Murray and Church 61 884.5 10.5 100 13.38 0.006 10/8/01 14.50 7.64 0.003 2565 021008 Park Place and Greenwich 14 75 61 899.75 6 100 10/6/01 2566 041008 Murray and Greenwich 663.75 12 100 15.29 0.009 $0:601 14.75 2567 071008 West Street and Warren 45 630 9.5 100 12.10 0.007 1010/01 11.46 0.007 2563 061008 Warren and North End 14 00 45 630 9 100 10/8001 100 3.82 <BDL 2569 171008 North End and Park Place 14.50 45! 652.5 3 1018/01 0.005 2570 151008 River Terrace and Chambers 45 530 6 100 7.64 10/8/01 14.00 2571 161008 River Terrace and Waren 15.00 45 675 4.5 100 5.73 <BDL 10/5/01 100 5.10 <BOL 2572 141008 Park Place and River Tarrace 45 852.5 4 1008/01 14.50 0.00 2573 181008 Vesey and River Terrace 0 0 100 N/A 10/6/01 0.00 2574 FB1 Field Blank 1 0 0 100 0.00 NIA 1018101 0.00 2575 F82 Field Blank 2 49 735 5.5 100 7.01 0.004 ide 10/0101 15.00 2576 121008 3rd Place and West End and Waters 48 720 2 100 2.55 <BDL end of West Thame s 100001 15.00 2577 131008 West $1 752.25 6 100 7.64 0.004 14.75 2578 111008 Rector Place by park 48 720 11 100 14.01 0.007 15.00 2579 191000 Trinity Place and Thames 50 750 7 100 8.92 0.005 15.00 NYCDER DERTA 2580 051000 Fulton and Church 10/3/01 803 3 100 3.82 <BDL 10/6/01 14.60 55 2581 081008 Gateway Plaze 50 730 3 100 3.82 <BDL 10/8/01 14.60 2582 091008 South End Avenue and Albany 45 666 17 100 21.66 0.013 10/0/01 14.80 2583 101008 West and Albany 14.60 50 730 NIF 100 N/A N/A* 10/8/01 2584 1201008 Vesey and West Broadway

Analysis Method: Phase Contrast Microscopy, NIOSH Method 7400 11:42 ELAP ID No. 11750 Expires 12:01 AM, Apnl 1, 2002 Limit of Quanutation (LOQ) = 102 [Fiber/mm2] Limit of Detection (LOD) = 7 [Fiber/mm'] Sample Overloaded

OCT-09-2001 Analysis Performed By:Marek Pawlik Mark Olta Laboratory Director