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NYC-WTC_000195194

Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000195194–000195366
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Scanned page image, NYC-WTC_000195283
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OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

w Post Cleaning Samples (Test 4D) - Two air samples were collected. Both were below the detection limit of 0.052 pg/m’ and the primary clearance criterion of 1.0 pg/m’.

Post P‘ Cleaning Samples (Test 4E) - Three wipe samples were collected. Two of the three samples were below their respective primary clearance criterion. The third sample exceeded the primary clearance criterion of 25 pg/ft^ at a concentration of 954 pg/ft^.

Alpha-Quartz Before Cleaning Samples - Pre-cleaning air samples were not collected.

Post Cleaning Samples (Test 4A) - Two air samples were collected after the first cleaning. Samples were below the detection limit.

Post P' Cleaning Samples (Test 4B) - Two air samples were collected. Samples were below the detection limit.

Post P‘ Cleaning Samples (Test 4C) - Two air samples were collected. Both were below the detection limit.

«» Calcite Before Cleaning Samples - Pre-cleaning air samples were not collected.

Post P^ Cleaning Samples (Test 4A) - Two air samples were collected after the first cleaning. Samples were below the detection limit. 4* Post P‘ Cleaning Samples (Test 4B) - Two air samples were collected. Samples were <« below the detection limit.

Post J" Cleaning Samples (Test 4C) - Two air samples were collected. Both were below the detection limit.

Cristobalite 4* Before Cleaning Samples - Pre-cleaning air samples were not collected. <4 Post P' Cleaning Samples (Test 4A) - Two air samples were collected after the first cleaning. Both samples were below the detection limit.

Post P' Cleaning Samples (Test 4B) - Two air samples were collected. Both samples were below the detection limit.

Post P‘ Cleaning Samples (Test 4C) - Two air samples were collected. Both were below W the detection limit.

Tridymite Before Cleaning Samples - Pre-cleaning air samples were not collected.

Post f Cleaning Samples (Test 4A) - Two air samples were collected after the first

87

CITY_21MC100_011105317

NYC-WTC_000195283

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NYC-WTC_000195283Source: NYC Law Department, mirrored locally

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