Wipe sample results: pre- and post-cleaning comparison

NYC 9/11 Public Portal Document

Table IZ. Asbestos Wipe Samples - Before Cleaning and Post 1st Cleaning Results Internal Review Draft Unit Number i Sampiejd Cleaning Type I sj2n[Resuit J^n^^T Unit Number I Sample Cleaning Type I Sign I Result | Units | Difference

4B 9094-W-4B-001 Before cleaning 2,366 S/cm2 4B 9094-W-4B-Q13 Post 1 st cleaning - Test 2B 2,366 S/cm2 9094-W-4B-002 Before cleaning 2.366 S/cm2 4B g094-W-4B-014 Post 1st cleaning - Test 2B 2.366 S/cm2 4B 9Q94-W-4B-003 ______ Before cleaning 18.203 S/crTi2 4B 9094-W-4B-015 Post 1 st cleaning - Test 2B 4,749 S/cm2 4B 9094-W-4B-004 Before cleaning 13,454 S/cm2 4B 9D94-W-4B-Q16 _PostJstcleanmjYrest2B 2,366 S/cm2 ■JB’ 9094-W-4B-005 Before cleaning 3,166 §/cm2 ’TB’ 9094-W-4B-017 Post 1st cleaning - Test 2B S/cm2 2,366 Average 7,911 Average 2,843 5,068

4C 9094-W-4C-001 Before cleaning 2766 S/Cfr.2 4C 9o94-W-4C-018 Post 1st cleaning -Test 1A 2,366 S/cm2 4C 9094-W-4C-002 Before cleaning 2,366 S/cm2 4C 9094-W-4C-019 Post 1st cleaning -Test 1A 2,366 S/cm2 4C 9094-W-4C-0O3 Before cleaning 49.‘X>9 S/cm? 4C 9094-W-4C-020 Post ist cleaning - Test 1A 3,166 S/cm2 "4C 9094-7/-4C-004 Before cleaning 3,I66 S/cm2 4C 9094-W-4C-021 _PostJ_s£cleaning_-TGsMA 2,366 3/cm2 J XT 9094AV-4C-022 Post 1st cleaning - Test iA 2,366 S^m2 Average 14,242 Average 2.526 11,716

4D 9n94-W-4D-00l Before cleaning 2.366 S/em2 yu94-W-4D-U19 Post 1 st cleaning - Test 2A 2,374 S/cm2 40 3034-7740-002 ______ Before cleaning 2766 S/cm2 4D Q094-W-4D-020 Post 1 st cleaning - Test 2A 2,366 S/cm2 4D 9CI94-W-4D-003 ______ Before cleaning 34,032 S/cm2 4D 9094-W-4D-021 __PostJ^t_cleaniri2jjrest2A 26,118 S/cm2 40 9094-W-4O-0O4 ______ Before cleaning 2774 S/crTi2 4D 9094-W-4D-O22 Post 1st cleaning - Test 2A 43,529 S/cm2 ■4D’ 90’94 W-4C-006 Before cleaning 3.166 S/cm2 417 “9b944A/-4D^23 Post 1st cleaning - Test 2A $/cm2 Average 8.861 Average 21221 18,676 -9,815

5A 9094-W-5A-001 Before cleaning 2,366 S/cm2 5A 9094-W-5A-019 Post 1st cleaning - Test 3B 2,366 S/cm2 5A 9094-W-5A-002 Before cleaning 2,366 S/cm2 5A 9094-W-5A-020 Post 1 st cleaning - Test 3B 2,366 S/cm2 5A 9094-W-5A-003 Before cleaning 233.475 S/cm2 5A 9094-W-5A-021 Post 1 st cleaning - Test 3B 2766 S'Cm? 5A QnQ4.w.5A-on4 Rt cleaning S/crn2 5A I 9994 W-5A-922 Post 1 s‘ cleaning - Test 3B J 2,366 S/cm2 i 5A 1 9094-W-5A-023 Post is; deaning - Test 3B | 2,366 S/cm2 Average 65.290 Average____________ 2.366 62,923

5C J 9C94-W-5C-001 Before cleaning 9,497 S/cm2 I 5C 9094-W-5C-016 T Pos* ■’^tc'earinc • Tp$* 3A octufe Cleaning ,<166 i>/cm2 5C 9094-W-5C-017 } Post 1st cleaning - Test 3A 2,366 S/cm2 5C 9094-W-5C-003 Before cleaning 97,347 S/cm2 5C 9094-W-5C-018 | Post 1st cleaning-Test 3A 2,366 S/cm2 5C’ ■ 9C94-W-5C-004 Before cleaning 30,075 S/cm2 5C 9Q94-W-5C-019 j Post 1 st cleaning - Test 3A 3,166 S/cm2 "5^ 9094-W-5C-02b’' [ '"Post 1st cleaning - Test 3A S/cm2 J 3,166 ____Average 35,021 Average 2.688 32.333

5D ’9C94-vV-5D-001 ______ Before Cleaning 2.366 S/cm2 5D 9094-W-5D-O15 Post 1st cleaning - Test 3B 5,916 S/cm2 5D 9C94-W-5D-002 Bef0re cleaning 2.366 S/cm2 50 9094-W-5D-O16 Post 1 st cleaning - Test 3B 5,916 S/cm2 50 Z 9094-W-5D-Q03 Before cleaning 2,366 S/cm2 5D 9094-W-5D-017 __Post_U£clcanin2jJ^est_^ 5,916 S/cm2 50 9094-VV-5D-004 i______ Before cleaning 4.749 S/cm2 50 9094-W-5D-018 Post 1 st cleaning • Test 3B 5,916 S/cm2 50 ■'3394-7.-50-005 before cleaning 36.406 S/cm2 '50 90944/y.5D-019 Post 1st cleaning - Test 3B 5,916 S’ct.2 Average 9.651 Average 5,916 3.735

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NYC-WTC_000186174