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304 Edgemont Terrace Teaneck NJ 07666 201 692 7967 fax 201 678 1789 o' 00 "0 cn o Ca3 03 Certificate of Analysis Client: Riverpoint, Inc Project Location: WTC, NYC Analysis Date: December 10,2001 o o o Client#: 101171 Work Area: N/A RCS Project # 175 c 3 CD 3 PCM Air Sample Analysis Summary Lab ID Client ID Sample Desoription Date Flow Rate Duration Volume Fibers Fields Density Fiber Cono. LOD Collected [liters/min.] fminuteal niters 1 rFiber/mm’l [Fiber/oo] [Fiber/oo] 4085 011210 Park Place and Church 12/10/01 14.30 45 643.5 6.00 100 7.64 0.005 0.004 4080 021210 Park Place and Greenwich 12/10/01 14.80 45 666.0 6.00 100 7.64 0.004 0.004 4086 031210 Murray and Church 12/10/01 14.30 45 643.5 4.00 100 5.10 <LOD 0.004 4081 041210 Murray and Greenwich_____________ 12/10/01 15.00 ___ « 675.0 5.00 100 6.37 <LOD 0.004 4082 051210 Fulton and Church 12/10/01 14.80 45 666.0 3.50 100 4.46 <LOD 0.004 4087 061210 Warren and North End 12/10/01 14.30 45 643.5 3.00 100 3.82 <LOD 0.004 4088 071210 West Street and Warren___________ 12/10/01 14.60 45 657.0 5.00 100 6.37 <LOD 0.004 4094 081210 Gateway Plaza__________________ 12/10/01 14.70 45 661.5 3.00 100 3.82 <LOD 0.004 4095 091210 South End Avenue and Abany_______ 12/10/01 14.70 45 661.5 3.50 100 4.46 <LOD 0.004 4096 101210 West and Albany_________________ 12/10/01 14.45 45 650.3 3.00 100 3.82 <LOD 0.004 4097 111210 Rector Place by park______________ 12/10/01 14.70 45 661.5 3.00 100 3.82 <LOD 0.004 4098 121210 3rd Place and South End and Waterside 12/10/01 14.45 45 650.3 7.50 100 9.55 0.006 0.004 4099 131210 West end of West Thames 12/10/01 14.70 45 661.5 2.00 100 2.55 <LOD 0.004 4089 141210 Park Place and River Terrace 12/10/01 14.30 45 643.5 4.00 100 5.10 <LOD 0.004 4090 151210 River Terrace and Chambers 12/10/01 14.30 45 643.5 3.00 100 3.82 CLOD 0.004 4091 161210 River Terrace and Warren 12/10/01 14.60 45 657.0 3.00 100 3.82 <LOD 0.004 4092 171210 North End and Park Place 12/10/01 14.60 45 657.0 8.50 100 10.83 0.006 0.004 4093 181210 Vesey and River Terrace___________ 12/10/01 14.60 45 657.0 3.00 100 3.82 <OD 0.004 4083 191210 Trinity Place and Thames___________ 12/10/01 14.80 45 666.0 6.00 100 7.64 0.004 0.004 4084 201210 Vesey and West Broadway_____ 12/10/01 14.80 45 666.0 4.00 100 5.10 <LOD 0.004 4100 FBI Field Blank 1 12/10/01 0.00 0 0.0 0.00 100 0.00 N/A N/A 4101 FB2 Field Blank 2 12/10/01 0.00 0 0.0 0.00 100 0.00 N/A N/A Q

H ELAP ID No. 11750 Expires 12:01 AM, April 1, 2002 Analysis Method: Phase Contrast Microscopy, NIOSH Method 7400 I—i Limit of Quantitation (LOQ) = 102 [Fiber/mm^| o Limit of Detection (LOD) = 7 [Fiber/mm’] o

I o o o Analysis Performed By: AU LU Marek Pawlik kO (JI Laboratory Director o