Form documenting the tracking and handling of environmental samples collected by the Department of Environmental Protection.
NYC-WTC_000145695–000145868Folder label: “NO INFO”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Gypsum was not detected in any sample.
Lead Before Cleaning Samples - Three micro vacuum samples and three wipe samples were collected. The results indicate that all three of the micro vacuum samples were below the comparison value of 25 pg/ft^ and below the detection limit. The three wipe samples contained detectable concentrations of lead; however, all of the concentrations were below the primary clearance criterion of 25 pg/ft^.
Post P‘ Cleaning Samples - Two air samples, three 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^ Two of the three micro vacuum samples were below the detection limit. The third micro vacuum sample was slightly above the detection limit, but below the comparison value. Three of the four wipe samples were below the detection limit. The fourth sample was above the detection limit but below the primary clearance criterion. Since the primary clearance criterion was met for lead after the first cleaning, no additional samples were collected for analysis of lead.
Alpha-Quartz Before Cleaning Samples - Pre-cleaning air samples were not collected.
Post Cleaning Samples - Two air samples were collected after the first cleaning. One of the two air samples detected alpha-quartz at a concentration above the detection limit, at 0.008 mg/m^. The detection also was above the primary clearance criterion of 0.004 mg/m’. The other air sample was below the detection limit. Since one air sample exceeded the primary clearance criterion, additional air samples for alpha-quartz were collected.
Post 2^ Cleaning Samples - Two air samples were collected after the second cleaning. The results showed that both samples were below the detection limit. This indicates that the second cleaning was able to reduce the alpha-quartz concentration in air to below the detection limit.
Calcite 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.
Post 2^ Cleaning Samples - Two air samples were collected after the second cleaning. The results indicate that both 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. 60
NYC-WTC_000145758
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NYC-WTC_000145027
Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
28 shared non-person entities · Same agency, volume and box · similarity 0.960
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145869
Interim final report from EPA Region 2 detailing a background study of environmental conditions at the World Trade Center site.
28 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.960
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155286
Formal letter criticizing the EPA and DEP for alleged failures in cleaning asbestos and silica from 114 Liberty Street.
13 shared non-person entities · 1 shared topics · similarity 0.964
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155174
Chain of custody documentation for cleanup and monitoring samples at 114 Liberty distributed among project team members.
12 shared non-person entities · similarity 0.961
machine-extracted · confidence unavailable · Check page ↗12 shared non-person entities · similarity 0.961
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000138897
Internal DEP coordination regarding comments on 114 Liberty procedures and preparation of a response.
12 shared non-person entities · similarity 0.960
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000102521
EPA letter confirming that primary and secondary clearance levels for asbestos and other contaminants were met at 114 Liberty Street.
9 shared non-person entities · 1 shared topics · similarity 0.960
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151524
EPA Region II letter confirming that primary and secondary clearance levels for asbestos and other contaminants were met at 114 Liberty Street.
10 shared non-person entities · 1 shared topics · similarity 0.959
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000154940
EPA confirms that primary and secondary clearance levels for contaminants at 114 Liberty Street have been met.
10 shared non-person entities · 1 shared topics · similarity 0.958
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000154998
EPA confirms that primary and secondary clearance levels for contaminants at 114 Liberty Street have been met.
10 shared non-person entities · 1 shared topics · similarity 0.956
machine-extracted · confidence unavailable · Check page ↗12 shared non-person entities · similarity 0.956
machine-extracted · confidence unavailable · Check page ↗11 shared non-person entities · similarity 0.954
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Machine-extracted building matches; verify each source. Buildings, never households.
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Archival folder label for September 11 news clippings from the Office of the Mayor, identified as Folder 0123.
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Updated memorandum defining the Red Zone boundaries and listing authorized agencies for entry into the restricted area.
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NYC-WTC_000142373
Directory of organizations providing financial aid, job placement, and space assistance to businesses affected by the disaster.
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NYC-WTC_000145027
Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
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Policy document outlining NYPD access requirements for building owners and contractors at the site in October 2001.
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