Wipe sample results: pre- and post-cleaning comparison

NYC 9/11 Public Portal Document

1 able Aspestos Wipe Samples - Before Cleaning and Post 1 st Cleaning Results Internal Review Draft Unit Number Sample id ________ Cieaning Type Sian Result Units Unit Number Sample, Id _________ Cleaning Type Sign Result Units Difference 2A 9094-W-2A-001 Before cleaning 2,366 S/cm2 ?A 9094-W-2A-C17 Post 1st cieaning - Test iB 1,183 S/cm2 2A 9094-W-2A-002 Before cleaning 2,366 S/cm2 2A 9094-W-2A-018 Post 1st cleaning-Test IB 1,183 S/cm2 2A 9094-W-2A-003 _______ Before cleaning 56,192 S/cm2 2A 9094-W-2A-019 Post 1st cleaning - Test IB 4,397 S/cm2 2A 9094-W-2A-004 ________ Before cleaning 18,945 S/cm2 2A 5094-W-2A-C20 Post 1 st cleaning - Test 1B 2,366 S/cm2 2A 9094-W-2A-005 Before cleaning 3,166 S/cm2 2A 9094-W-2A-021 Post 1 st cleaning - Test 1B S/cm2 1,183 Average 16,607 Average_____________________ 2,063 ] 4,544

2B 9094-W-2B-001 Before cleaning 2,366 S/cm2 2B 9U94-W-2B-015 Post 1 st cleaning - Test 3A 5,916 S/cm2 2B 9094-W-2B-002 Before cleaning 2,366 S/cm2 2B 9094-W-2B-C16 Post 1 st cleaning - Test 3A 5,916 S/cm2 2B y094'W-2B-003 Before cleaning 102,096 S/cm2 9094-W-2B-017 Post 1 st cleaning - Test 3A 5,916 S/cm2 2B 9094-W-2B-004 Before cleaning 5,540 S/cm2 2B 9094-W-23-018 D, It cleaning -Test3A 5.916 S/cm2 9094-W-2B-019 Post 1 st cleaning - Test 3A -5,936 ’S/cm2 Average 28,092 Average 5,920 22,172

3A 9094-W-3A-001 Before cleaning 2,366 S/cm2 3A 9094-W-3A-017 Post 1 st cleaning - Test 2B [ 15,037 S/crri2 3A 9094-W-3A-002 Before cleaninq 2.366 S,/cm2 Dg94-Vv-jA-0l8 Post I st cieaning - Test 2B 1 I S/cm2’ 3A 9O94-W-3A-6o3 Before cleaning 2,366 3/cm2 3A 9094-W-3A-019 Post 1st cleaning - Test 2B S/cm2 3A 9094-W-3A-004 Before cleaning 4,749 S/cm2 3A 9094-W-3A-020 Post 1 st cleaning - Test 26 3,166 S/cm2 3A 9094-W-3A-021 Post 1 st cleFTing - Test 2B ~j S/crT.2 Average 2.962 Average 7.272 -4.310

3B 9094-W-3B-001 Before cleaninq 2,366 S/cm2 3B 9C94-W-3B-018 Post 1st cleaning - Scope A 742 S/cm2 3B 9094-W-3B-002 Before cleaning 2,366 S/cm2 3B 9C94-W-3B-019 Pest 1st cleaning - Scope A 740 S/cm2 3B 9094-W-3B-003 Before cleaning 3,166 S/cm2 3B y094-W-3B-G20 Post 1 st cieaning - Scope A 4.699 S/cm2 3B 9094-W-3B-004 Before cleaning 2,366 S/cm2 3B 9Q94-W-3B-Q21 Post 1 st cleaning - Scopp £> 3B 9094-W-3S-022 ’ JI Post l~^'ciea'ning - Scope A I S/cm2 T Average 2.566 Average 2.522 44

3C I 9094-W-3C-001 I Before cleaning 2,366 SZcm2 3C 9094-W-3C-016 I Post Is; cleaning - Test 1A | < 2,366 S/cm2 I [ 9094-W-3C-002 I 2.374 S/cm2' nOO4,.A/.O*^.A--7 3C Before cleaning yuy4-v\'-3C-UO3 Before cleaning 55,401 S/cm2 3C 9094-W-3C-018 Post 1 st cleaning - Test 1A 77,561 S/cm2 9094-W-3C-004 Before cleaning 75.979 S/cm2 3C 9094-W-3C-Q19 Post 1st cleaning - Test 1A < 2,366 ‘S/cm2 3C 9094-W-3C-020 Post 1 st cleaning - Test 1A 13,454 ■S/cm2

Average _ 343)30 Average 21,682 12,348

3D 9094-W-3D-()01 ________ Before cleaning 4,749 S/cm2 3D 9094-W-3D-015 Post fst cleaning - Test lA 14.246 S/cm2 3D ■■ 9Q94-W-3D-^^ Before cleaning 2,366 S/Gm2 3D 9094-W-3D-01G Post 1st cleaning - Test 1A 3,957 S/cm2 9CS^W^dF03 172,534 ~S/cmF 3D 9094-W-3D-0?7 Post 1 st cleaning - Test 1A 10.289 S/cm2 3D Before cleaning 3D ’ 9C94-W-3dF04” Before cleaning 118,716 S/cm2 3D 9094-W-3D-018 Post 1st cleaning - Test 1A 10,289 S/cm2 I 9094-^7^-005 Before cleaning 4.749 $/cm2 3D 9094-W-3D-C19 Post i st cleaning -T"est 1A~ 10,289 $/cm'2 3D Average 9.8 iF 50.809 Average 66.623

Q 4A '^*^04 W-4A-C01 Before cleaning 2,.66 S/cm2 4A 9094-W-4A-015 Pcs* 1st cleaning - Test 2A 1.979 S-cm2 ’9o’94-W-FFoO2 Before cleaning 2,366 S/cm2 ~ 9094-W-4A-016 Post 1 st cleaning - Test 2A I, >83 S/crn2 l-< 4A 9094-W-4A-003 2.374 5/cm2 ’4A ~ ~9094-W-4A-01212 Po^1 st cleaning - Test 2A 1.183 S/cm2 I 4A Before cleaning 4A' O994-'A'-4A-OO4 Before cleaning 2,366 S/cm2 4A 9054-W-4A-018 Post 1s( cleaninq - Test 2A -S/cm2 4A 9094-W-4A-019 Post 1 st cieaning - Test 2A' I,'83 $/cm2

Average 2,31.8 ^erag^____________ 2.452 -S3 O

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NYC-WTC_000186173