OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Lead Before Cleaning Samples - Seven micro vacuum samples and three wipe samples were collected. Lead was detected in one of the seven micro vacuum samples at concentrations below the comparison value of 25 pg/iV. All three wipe samples had detectable concentrations of lead, two of which were above the primary clearance criterion of 25
Post P‘ Cleaning Samples - Two air samples, seven micro vacuum samples and four wipe samples were collected after the first cleaning. The two air samples were below the primary clearance criterion of 1.0 pg/m^. All seven micro vacuum samples were below the comparison value. Two of the four wipe samples exceeded the primary clearance criterion, therefore, additional cleaning was necessary.
Post 2nd Cleaning Sampling - Three wipe samples were collected following the second cleaning. The results of all three samples were below the primary clearance criterion. In two of the samples, lead was not detected. The sampling results following the second cleaning indicate that the primary clearance criterion was met.
Alpha-Quartz Before Cleaning Samples - Pre-cleaning air samples were not collected.
Post P* Cleaning Samples - Two air samples were collected after the first cleaning. All of the samples were below the detection limit.
Calcite Before Cleaning Samples - Pre-cleaning air samples were not collected.
Post P* Cleaning Samples - Two air samples were collected after the first cleaning. All of the samples were below the detection limit.
Cristobalite Before Cleaning Samples - Pre-cleaning air samples were not collected.
Post Cleaning Samples - Two air samples were collected after the first cleaning All of the samples were below the detection limit.
Tridymite Before Cleaning Samples - Pre-cleaning air samples were not collected.
Post P‘ Cleaning Samples - Two air samples were collected after the first cleaning. All of the samples were below the detection limit.
MMVF Before Cleaning Samples - Three pre-cleaning wipe samples were collected. MMVF was detected in all three of the samples.
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CITY_21MC100_011105302
NYC-WTC_000195268
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NYC-WTC_000145695
Form documenting the tracking and handling of environmental samples collected by the Department of Environmental Protection.
Similarity score 0.997 (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 0.995 (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.
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145695
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