EPA memorandum on WTC environmental data concealment, July 2004

z z -< -< o o co S I o? IKjmala (Consulting S ervices, Inc. ■D o I c O Q CT O A 304 Edgenioni Tenace Teancck NJ 07666 201692 7967 fax 201 678 1789 o' —I cn M ■D Ca5 Q O co Q q KJ CertiGcate of Analysis 3. 91 Client; Riverpoint, Inc Project Location: WTC, NYC Analysis Date: April 3, 2002 O (n o Client#; 101171 Work Area; N/A RCS Project #283 o c ui 3 CD O PCM Air Sample Analysis Summary Lab ID Clienl ID SaTTiple D:acfiption 1 Flow Rale Duration Dale Volume Fibers Fields Density FiberConc. LOD ColJecled [liieMi'min.] [minutes] 1 lilersl (Fibo/ccl [Fibei/cc] 6348 010403 Park Place and Church 4/3/02 14.05 45 632.3 8.00 100 10.19 0.006 0.004 6349 020403 Park Place and Greenwich___________ 4/3/02 14.30 45 643.5 6.00 100 7.64 0.005 0.004 ■ -? 01 I 6350 030403 Murray and Church_____ ____________ 4/3/02 14.05 45 632.3 9,00 100 11.46 0.007 0.004 X

11 6351 040403 Murray and Greenwich_______ _______ 4/3/02 14.30 45 643.5 7.50 100 9.55 0.006 0.004 6^ 050403 Futton and Church 4/3/02 14.05 45 632.3 5.00 100 6.37 <LOD 0.004 CO 1 ro 6335 060403 Warren and North End 4/3/02 14.45 45 650.3 6.00 100 7.64 0.005 0.004 Ln CD ui 6336 070403 West Street and Warren 4/3/02 14.45 45 650.3 10.00 100 12.74 0.008 0.004 cn I ID ui .27 6342 080403 Gateway Plaza_____________________ 4/3/02 15.00 45 675.0 700 100 8.92 0.005 0.004 w 6343 090403 South End Avenue and Albany________ 4/3/02 15.00 45 675.0 200 100 2.55 <LOD 0.004 ^co m (n 6344 100403 West and Albany___________________ 4/3/02 15.00 45 675.0 2 00 100 2.55 <LOD 0.004 00 d 6345 110403 Rector Place by park________________ 4/3/02 15 00 45 675.0 1.00 100 1.27 <LOD 0.004 7 >7 6346 120403 3rd Place and South End and Waterside 4/3/02 15.00 45 675.0 2.00 100] 2.55 <LOD 0.004 5" j7 6347 130403 West end of West Thames 4/3/02 14.70 45 661.5 3 50 100 4^ <tOD 0.004 6337 140403 Park Place and River Terrace 6338 150403 River Terrace and Chambers 4/3/02 4/3/02 14.70 45 45 661.5 661.5 1.00 5 00 100 100 1.27 6.37 <LOD <LOD 0.004 0.004 r 6339 160403 River Terrace and Warren 4/3/02 14.70 45 661.5 5 50 100 7.01 CLOD 0.004 p’’ ID 45 m 10 6340 170403 North End and Park Place 4/3/02 14.70 661.5 2.00 100 2.55 CLOD 0.004 X n 6341 180403 Vesey and River Terrace 4/3/02 14.45 45 650.3 4.00 100 5.10 CLOD 0.004 ^9 6353 1S0403 Trinity Place and Thames 4/3/02 14.30 45 643.5 7.00 100 8.92 0.005 0 004 6354 200403 Vesey and West Broadway 4/3/02 14.30 45 643.5 3.00 100 3.82 <LOD 0.004 6355 FBI Field Blank 4/3/02 O.OD 0 0.0 0.00 100 0.00 N/A N/A 6356 FB2 Field Blank 4/3/02 0.00 0 0.0 0.00 100 0.00 N/A N/A 1 ?? to

ELAPlDNo. 11750 Expires J2;01 AM, June 15, 2002 Analysis Method: Phase Contrast Microscopy, NIOSH Method 7400 Limit of Quantitation (LOQ) = 102 [Fibcr/mm*] -u -g Limit of Detection (LOD) = 7 [Fiber/mm^ ] o

T! Analysis Peifonned By; AU Q Marek Pawlik KJ Laboratoty Director