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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_000186173–000186184
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NYC 9/11 Public Portal Document

Table 12.PCME Asbestos Air Samples - Pre 2nd Cie a ri i n g. Post 2nd Cleaning^ and Post 3rd Cleaning Results Unit Number | Sample Id Cleaning Type Ij5EI Re^jET ynrts[ Unit Number Sample ld Cleaning Type I Sign I Result | Units j Difference

5C-2nd 9094-A-5C-009 Pre 2nd cleaning overload S>5u/cc 5C 9094-A-5C-024 Post 2nd cleaning - Test 3A overload S>5u/cc 5C-2nd 9094-A-5C-010 Pre 2nd cleaning overload S>5u/cc 5C 9094-A-5C-025 Post 2nd cleaning - Test 3A overload S>5u/cc 5C-2nd 9094-A-5C-011 Pre 2nd cleaning overload S>5u/cc 5C 9094-A-5C-026 Post 2nd cleaning - Test 3A overload S>5u/cc 5C-2nd Pre 2nd cleaning 5C 9094-A-5C-027 Post 2nd cleaning - Test 3A overload S>5u/cc "SC 9094-A-5C-028 Post 2nd cleaning - Test 3A overload S>5u/cc Average #D1V/O’ Average_________________ ■?DIV/0! #DIV/0! Total 0,000000 Total 0.000000 0 5C-3rd 9094-A-5C-024 Post 2nd cleaning - Test 3A overload S>5u/cc 5C 9094-A-5C-031 Post 3rd cleaning - Test 3B 0.0004 S>5u/cc 5C-3rii 9094-A-5C-G25 Post 2nd cleaning - Test 3A overload S>5u/cc 5C 9094-A-5C-032 Post 3rd cleaning - Test 3B 0,0004 S>5u/cc 5C-3rd 9094-A-5C-Q26 Post 2nd cleaning - Test 3A overload S>5u/cc 5C 9094-A-5C-033 __ Post 3rd cleaning - Test 3B 0.0016 S>5u/cc A-5C-027 Post 2nd cleaning - Test 3A uvciload S>5u/gc 5C yU94-A-5C-034 Post 3rd cleaning - Test 3B 0.0015 S>5u/cc 5C-3rd 9094-A-5C-028 Post 2nd cleaning - Test 3A overload S>5u/cc "SC Post 3rd cleaning - Test 3B [ ' I Average__________________ #DIV/0’ Average__________________ 0.000975___________ 0 Total 0,000000 Total 0.003900 0

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NYC-WTC_000186184

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NYC-WTC_000186184Source: NYC Law Department, mirrored locally

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NYC-WTC_000149884 · Box DEP Box 10

A sample log recording pre-cleaning, post-cleaning, and third-cleaning air and wipe test results for pilot cleaning operations.

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