2 shared non-person entities · similarity 0.905
machine-extracted · confidence unavailable · Check page ↗Document / 12 pages
Wipe sample results: pre- and post-cleaning comparison
Machine-extracted title · confidence 85%Data table comparing wipe sample conductivity or contamination levels before and after the first cleaning for Unit 2A.
NYC-WTC_000186173–000186184Page image
OCR text
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Table 12. Lead Microvacuum Samples - Before Cleaning and Post 1st Cleaning Results Internal Review Draft Unit Number j Sample^ld Cleaning Type I Sign I Result | uTte I Unit Number Sample_ld Cleaning Type I Sign I Result | Units | Difference
______ Before cleaning Post 1st cleaning - Test 2B 4B ______ Before cleaning 4B Post 1st cleaning - Test 2B 4B ______ Before cleaning 4B Post 1st cleaning - Test 2B 4B ______ Before cleaning 4B Post 1st cleaning - Test 2B ’aB’ BeTore~cicanIng Post 1st cleaning - Test 2B Average none Average none
4C 9O94-W-4C-no5 Before cleaning 76.10|ug/ft2 4C 9094-M-4C-023 Post 1st cleaning-Test 1A 232 4C 9094-M-4C-006 Before cleaning 4C : 9Q94-M-4C-024 Post 1st cleaning - Test 1A 232 4C 9094-M-4C-007 Before cleaning 69 80 iigZft2~ 4C 9094.*1-40-025 Post 1st cleaning - Test 1A '4C 9094-M-4C-OO8 Before cleaning ~70.801ug/n2 2A1 ug/tt2
Average 75. in Average 2.32 73
•SO^-M-“D-OOS Before cleaning S3,5C'ug/ft2 S0y4-M-4D-024 Post 1st cieanma - lest 2A 2.40 ug/ft2 40 ’ 909^M-4D-0bT ______ Before cleaning 66.00 ug/ft2 4D’ 9094-M-4D-Q25 Post 1 st cleaning - Test 2A 2.32 40 9094-M'-4D-008 ______ Before cleaning 25.20 ug/ft2 9094-M-4D-026 Post 1st cleaning - Test 2A 2.32 ug/ft2 9094-M-4D-009 ______ Before cleaning 39.90 u9/ft2 40 9094-M-4D-027 Post 1st cleaning - Test 2A 2 32 ug/ft2 9094-M-4D-01C ______ Before cleaning 78.20 ug/Ft2 4 o’ 9094-M-4D-028 Post 1st cleaning - Test 2A 2.32 ug/ft2 40 9Q94-M-4D-011 Before cleaning 72.10 ug/ft2 TD" 9094-M-4D-029 Post 1st cleaning - Test 2A 2.32 ug/ft2 Average 6(1.98 Average 2J3 59
I 1 5A '(9694-M-5A.005 Before clean ng 2 23' u9/ft2 5A 9094-M-5A-024 Post 1st cleaning - Test 3B 2.60^ ug/ft2 G.F. AA 5A 19694-M-5A4506 Before cleaning 2.23 ug/ft2 5A ’ 9094-M-5A-025 ^Post 2st cleanin£2Test3B 4.15 ug/ft2 G.F. AA Befuie ciedtiitiy ug/n2 5A !yoy4-M-5A-O26 Post 1st cleaning - Test 3B ug/fl2 G.r. A-A lQnQ4-t./-5A-008 i I 5A j9034-M-5A-009 Before cleaning 2 23 ug.'ft2 “d ’ 9094-M-5A-027 Post l5t cleaning - Test 3B 0 76 ug/ft2 G.F. AA Before cleaning 2.23|ug/ft2 5A' ’ 9094-M-5A-028 Post 1st cleanino • Test 3B 0 98 ug/f12 G F AA 5A I9094-M-5A-010 Before cleaning 3.46 ug/ft2 5A 9O94-M-5A-029 Post 1 st cleaning - Test 3B 1.02 ,ug/ft2 G.F. AA |9094-M-5A-011 2.231ugm2 "’ ’’ 5A ' 9094-M-5A-030 Post 1st cleaning - Test 3B 5 27 ug/ft2 G.F. AA Average 2 44 Average 2.49 0
5C 9094-M-5C-005 Before cleanjng 104.00 ^9/^2 gO94-M-5C’O21 Post 1 st cleaning - Test 3A 2 32 ug/ft2 9094-W-5C-006 Before cleaning 293.00 ug/ft2 5C S094-M-5C-022 _Post1stcleanirigjjrest_^ 2 32 ug/ft2 5C '9O94-M-5C-007 Before cleaning 133.00 ug/ft2 _ 5C S094-M-5C-023' Post 1st cleaning - Test 3A 2 32 ug/ft2
Average 176.67 Average 2.32 174
50 i9094-M-5D^O6 [ Before cleaning 27 10 ;LJg/ft2 50 iS094-M-50-020 ^ost 1 st cleaning - Test 3B 2 32 50 !9n94-M-5D-007 Before cleaning 49.10 ug/ft2 50 S094-M-5D-021 ^ost 1 st cleaning - Test 3B 2 32 ug^
------ T........... . O i 1"^ r Average 38.10 Average 2.32 .36
s o O O I o
o
co
O
NYC-WTC_000186180
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000186180Source: NYC Law Department, mirrored locally
Related records
Browse subjects →Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.
Same-box records
NYC-WTC_000186138
Table comparing contaminant levels before and after cleaning for Unit 2A, including dioxin, PAHs, asbestos, and lead.
2 shared non-person entities · similarity 0.859
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000186185
Table ranking cleaning tests by contamination level to determine the number of cleaning cycles required for specific areas.
Similar document embedding; no shared entity or topic indexed. · similarity 0.858
machine-extracted · confidence unavailable · Check page ↗Filed elsewhere
NYC-WTC_000149884
A sample log recording pre-cleaning, post-cleaning, and third-cleaning air and wipe test results for pilot cleaning operations.
2 shared non-person entities · similarity 0.919
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145695
Form documenting the tracking and handling of environmental samples collected by the Department of Environmental Protection.
2 shared non-person entities · similarity 0.912
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145027
Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
2 shared non-person entities · similarity 0.882
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155286
Formal letter criticizing the EPA and DEP for alleged failures in cleaning asbestos and silica from 114 Liberty Street.
2 shared non-person entities · similarity 0.863
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151158
Status report tracking completion dates for common area and HVAC cleaning at multiple Manhattan addresses during March 2003.
2 shared non-person entities · similarity 0.861
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155794
Cover sheet for a fax transmission sent from the US EPA Region 2 office in August 2002.
2 shared non-person entities · similarity 0.859
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145869
Interim final report from EPA Region 2 detailing a background study of environmental conditions at the World Trade Center site.
2 shared non-person entities · similarity 0.853
machine-extracted · confidence unavailable · Check page ↗2 shared non-person entities · similarity 0.852
machine-extracted · confidence unavailable · Check page ↗2 shared non-person entities · similarity 0.852
machine-extracted · confidence unavailable · Check page ↗More like this page
Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
NYC-WTC_000145695
Form documenting the tracking and handling of environmental samples collected by the Department of Environmental Protection.
Similarity score 0.939 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145027
Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
Similarity score 0.939 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145695
Form documenting the tracking and handling of environmental samples collected by the Department of Environmental Protection.
Similarity score 0.939 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145027
Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
Similarity score 0.938 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145027
Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
Similarity score 0.938 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145027
Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
Similarity score 0.938 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Others also read
Readers open these alongside this record — through an Ask answer, the same folder, or indexed similarity. Not a claim they are about the same event.
A sample log recording pre-cleaning, post-cleaning, and third-cleaning air and wipe test results for pilot cleaning operations.
Similar indexed content
NYC-WTC_000145695
Form documenting the tracking and handling of environmental samples collected by the Department of Environmental Protection.
Similar indexed content
Similar indexed content
NYC-WTC_000145027
Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
Similar indexed content
NYC-WTC_000155286
Formal letter criticizing the EPA and DEP for alleged failures in cleaning asbestos and silica from 114 Liberty Street.
Similar indexed content