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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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Scanned page image, NYC-WTC_000186176
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OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

Table 12* PCME Asbestos Air Samples - Pre 2nd Cleaning, Post 2nd Cleaning, and Post 3rd Cleaning Results Internal Review Draft Unit Number Sampietd Cleaning Type Sign Result Units Unit Number Sample. Id ______ Cleaning Type_____ Sign Result Units Difference 90S4-A-5C-027 1 est 3A - Post 2nd cleaning overload S>5u/cc 5C 9O94-A-5C-028 Test 3A - Post 2nd cleaning overload iS>5u/cc Average Average

SC-3rd 9094-A-5C-024 Post 2nd cleaning - Test 3A overload S>5u/cc 5C 9Q94-A-5C-031 Test 3B - Post 3fd cleaning 0.0004 ,S>5u/cc 5C-3rd 9094-A-5C-025 Post 2nd cleaning - Test 3A overload S>5u/cc 5C 9Q94-A-5C-032 Test 3B - Post 3rd cleaning 0.0004 S>5u/cc 5C-3rd 9094-A-5C-026 Post 2nd cleaning - Test 3A overload S>5u/cc 5C 9094-A-5C-033 Test 3B • Post 3rd cleaning 0.0016 S>5u/cc 5C-3rd 9094-A-5C-027 Post 2nd cleaning - Test 3A overload S>5u/cc 5C 9094-A'5C-034 Test 3B - Post 3rd cleaning QCQ15 S>5u/cc '5C-3rd 9094-A-5C-028 Post 2nd cleaning - Test 3A overload S>5u/cc "5^ Average Average 0.000975

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NYC-WTC_000186176

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NYC-WTC_000186176Source: 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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