Wipe sample results: pre- and post-cleaning comparison

NYC 9/11 Public Portal Document

Tabic 12, MMVF Wipe Samples - Before Cleaning and Post 1st Cleaning Results Internal Review Draft I Sign I Result | Uni^ f Unit Number I Sample_!d Cleaning Type Unit Number Samplejd T Cleaning Type I Sign I Result | Units | Difference

4B 9094-W-4B-0Q2 Before cleaning 286.16 mmvf S/c 4B 9Q94-W-4B-Q13 Post 1 st cleaning • Test 2B 286,16 mmvf S/c 4B 9094-W-4B-003 Before cleaning 629.55 mmvf S/c 9Q94-W-4B-Q14 Post 1st cleaning-Test 2B 228.93 mmvf S/c 4B 9094-W-4B-004 Before cleaning 400.62 mmvf_S/c 4B 9094-W-4B-015 Post 1st cleaning - Te_st 2B 400.62 mmvf S/c 4B 9094-W-4B-005 Before cleaning 686.78 mmvf S/c 4B 9094-W’4B-016 Post 1 st cleaning - Test 2B 171.69 mmvf S/c ■4^ 9094-W-4B-017 Post 1st cleaning - Test 2B 57-23 mmvf S/c Average 500.78 Average 228.93 272

4C 9094-W-4C-002 Before cleaning 57.23 mmvf S/c 4C 9094-W-4C-018 Post 1st cleaning - Test 1A 57.23^mmvf S/c 4C 9094-W-4C-003 Before cleaning 1030.17 mmvf S/c 4C 9094-W-4C-019 Post 1st cleaning - Test 1A 228.93 mmvf_S/c 4C 9094-W-4C-004 Before cleaning 343 39 mmvf 5/c 4C 9094 W 40-020 Post 1st Cleaning - Test 1A 343.35 mmvf S/c 4C 9094-W-4C-021 Post 1 st cleaning - Test 1A 114.46 mmvf S/c 'zr 9094-W-4C-C22 Post 1st cleaning - Test 1A 228.93 mmvf S/c ^yerag^ 476.93 Average 194.59 282

Before cleaning .52 mmvf S/c 4D 9O94-W-4D’O19 Post 1 st cieaninq - Test 2A 57.23i mrnvf S/c I 4D 9094-W-4D-003 Before cleaning 2174.79 mmvf S/c 4D 9094-W-4P-020 Post 1st cleaning - Test 2A 171,69 mmvf_S/c 9094-W-4D-004 Before cleaning 286.161 mmvf S/c 4D 9094-W-4D-021 Post 1 st cleaning - Test 2A 572.31 rnmyfS/c 4b 9094-W-4D-O05 Before cleaning 457.85 mmvf S/c 4D g094-W-4D-022 Post 1 st cleaning - Test 2A 228.93 mmvf S/c ■4^ Post 1 st cleaning - Test 2A 9094.W-4D-023 228.93 mmvf .S/r Average 829.86 Average 251.82 578

5A I9C94-W-5A-002 Before cleaning 297.60 mmvf S/c 9094-W-5A-019 Post 1st cleaning - Test 3B 256.16 mmvf S/c 5A 19094 W 5A-Q03 Before cleaning 1308.15 mmvf S/c 5A 9094-W-5A-020 Post 1st cleaning - Test 3B 57.23 mmvf S/c |9094-W-5A-Q04 Before cleaning 792.45 mmvf S/c 5A ' 9094-W-5A-021 5A Post 1 st cleaning - Test 3B 114.46 mmvf S/c 5A iyyy4-w-5A-022 Host 1st cleaning • Test 3B 57?3lmm^'f $.'c 5A i9094-W 5A-023 Post 1st cleaning - Test 35 1l4.4Gjmmvf~S/c j

Average 799.40 Average 125.91 673

9094-W-5C-002 Before cleaning 457.85 mmvf S/c 5C 9094-W-5C-016 Post 1st cleaning - Test 3A 1774.17 mmvf S/c 5C 9094-W-5C-003 Before cleaning ■ 457 85 mmvf S/c 5C 9094-W-5C4)17 Post 1st cleaning • Test 3A 744.01 mmvf S/c 5C 9094-W-5C-004 Rpfnrp cleaning 1144 63 mmvf S/c 5C 9094-W-5C-018 Post 1st cleaning - Test 3A 4211.37 mmvf S/c 5C 9094-W-5C-013 Post 1st cleaning - Test 3A 2758.14 immvf_S/c 9094’W-5C’020 Post 1st cleaning - Test 3A 131632 mmvf_S/c Avpranp 686.78 Average 2160.80 -1,474

5D 9O94-W-5D-002 Before cleaning 251.82 mmvf_S/c 5D 9094-W-5D-015 Post 1st cleaning - Test 3B 171 69 mmvf S/c 5D’ 9094-W-5D-003 Before cleaning 206 63 mm\/f ^/r 5D 9094-W-5D-016 Post 1st cleaning - Test 3B 228.93 mmvf S/c 5D " 9094-W-5D-004 Before cleaning 7111? mmvf_S/c 9Q94-W-5D-017 Post 1st cleaning - Test 3B 171.69 mmvf S/c 5D' I9094-W-5D-005 Before cleaning 595.21 mmvf S/c 5D 9094-W-5D-nia Post 1st cleaning • Test 3B 114 46 mmvf S/c ! '5b 9b94-W“5D-019 Post 1st cleaning - Test 3B 228.93 mmvf_S/c 258 I Average 441,32 Average 183.14 Q

I

O O Io

o

co

NYC-WTC_000186182