OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Third Floor Hallway - The third floor hallway is an area with plywood floors, and walls made of sheet rock covered with wallpaper glue. The ceiling is also made of sheet rock, and is painted.
Cleaning Method - This area was cleaned using Test 4A and Test 4B. Test 4A used industrial HEPA-filtered vacuums and an AFD, while Test 4B consisted of a soap and water wet wipe of the ceiling only.
Cleaning Results - This unit met the clearance criteria listed in Table 1.0 for each compound after being cleaned once.
w Asbestos Before Cleaning Samples - There were no samples collected before cleaning.
Post P‘ Cleaning Samples - Two post-cleaning air samples were collected. The two air samples were analyzed using PCM, TEM AHERA, and PCMe. The PCM result were all below the secondary numeric criterion of 0.01 f/cc. Similarly, the TEM AHERA results were all below the secondary numeric criterion of 0.022 S/cc. The PCMe results were all below the primary clearance criterion of 0.0009 S/cc with both samples being below the detection limit.
Dipjdn Before Cleaning Samples - There were no samples collected before cleaning.
Post P‘ Cleaning Samples - There were no samples collected after cleaning.
Gypsum Before Cleaning Samples - There were no samples collected before cleaning.
Post P‘ Cleaning Samples - There were two air samples collected after the first cleaning. Gypsum was not detected in any sample. « Lead Before Cleaning Samples - There were no samples collected before cleaning.
Post Cleaning Samples - There was one air sample collected after the first cleaning. The air sample was below the detection limit. Since the primary clearance criterion was * met for lead after the first cleaning, no additional lead samples were collected.
Alpha-Quartz Before Cleaning Samples - There were no samples collected before cleaning.
Post P‘ Cleaning Samples - There were two air samples collected after the first cleaning. All of the samples were below the detection limit. Because all of the samples were below the detection limit after the first cleaning, no additional samples were collected for analysis of alpha-quartz.
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CITY_21MC100_011105287
NYC-WTC_000195253
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Similarity score 0.998 (not a probability)
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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.
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145695
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