WTC PCM lab report, October 10, 2001

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I o o Renata onsulting </ u c o CT o 304 Edgemont Terrace Teaneck NJ 07666 201 692 7967 fax 201 678 1789 o' CD U o o 00 Certificate of Analysis 3. 03 Client: Riverpoint, Inc Project Location: WTC, NYC Analysis Date: October 10,2001 o o Client#: 101171 Work Area: N/A RCS Project # 101 o c 3 CD PCM Air Sample Analysis Summary Lab ID Client ID Sample Description Date Flow Rate Duration Volume Fibers Fields Density Fiber Cone. Collected riiters/min.l [minutes] niters] |Fibcr/mm’l [Fibcr/ccl 2607 011009 Park Place and Church 10/10/01 14.00 45 630 8 100 10.19 0.006 2608 021009 Park Place and Greenwich 10/10/01 14.50 45 652.5 7.5 100 9.55 0.006 2609 031009 Murray and Church_____ 10/10/01 14.50 45 652.5 3 100 3.82 <LOD 2610 041009 Murray and Greenwich 10/10/01 14.50 45 652.5 6 100 7.64 0.005 2620 051009 Fulton and Church 10/10/01 15.00 48 720 3 100 3.82 <LOD 2611 061009 Warren and North End 10/10/01 14.50 45 652.5 6 100 7.64 0.005 2612 071009 West Street and Warren 10/10/01 14.50 45 652.5 5 100 6.37 <LOD Gateway Plaza 10/10/01 14.75 50 737.5 5 100 6.37 <LOD 2625 091009 South End Avenue and Albany 10/10/01 14.75 50 737.5 9.5 100 12.10 0.006 2627 101009 West and Albany_________________ 10/10/01 15.00 48 720 3 100 3.82 <LOD 2624 111009 Rector Place by park______________ 10/10/01 14.80 50 740 7.5 100 9.55 0.005 2622 121009 3rd Place and West End and Waterside 10/10/01 14.50 50 725 3 100 3.82 <LOD 2623 131009 West end of West Thames 10/10/01 15.00 50 750 2 100 2.55 <LOD 2613 141009 Park Place and River Terrace 10/10/01 14.50 45 652.5 5 100 6.37 <LOD 2614 151009 River Terrace and Chambers 10/10/01 14.50 45 652.5 1.5 100 1.91 <LOD 2615 161009 River Terrace and Warren 10/10/01 15.00 45 675 4.5 100 5.73 <LOD 2616 171009 North End and Park Place__________ 10/10/01 15.00 45 675 4 100 5.10 <LOD 2617 181009 Vesey and River Terrace___________ 10/10/01 14.75 45 663.75 2 100 2.55 <LOD 2628 191009 Trinity Place and Thames__________ 10/10/01 15.00 49 735 3 100 3.82 <LOD 2621 201009 Vesey and West Broadway 10/10/01 14.75 51 752.25 3 100 3.82 <LOD 2618 FBI Field Blank 1 10/10/01 0.00 0 0 0 100 0.00 N/A 2619 FB2 Field Blank 2 10/10/01 0.00 0 0 0 100 0.00 N/A

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/mm^] Limit of Detection (LOD) = 7 [Fiber/mm^]

Analysis Performed By: Marek Pawlik Laboratory Director