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
The results of the five wipe samples indicate that asbestos was present in all of the samples, but generally at lower concentrations than those observed before cleaning.
Post 2”“^ Cleaning Samples - Four post-cleaning air samples were collected for asbestos. These samples were analyzed using PCM, TEM AHERA, and PCMe. The results of the PCM analysis were below the secondary numeric criterion of 0.01 ftcc. One sample was below the detection limit. The TEM AHERA results were all below the detection limit. The PCMe results were also all below the primary clearance criterion of 0.0009 S/cc. This indicates that the cleaning techniques were effective at reducing the particulate matter, which allowed valid air samples to be collected and analyzed.
Dioxin Before Cleaning Samples - Four pre-cleaning wipe samples were collected and analyzed for dioxin. The results indicate that dioxin was present; however, the TEQ concentration for each sample was below the primary clearance criterion of 4 ng/m^.
Post P‘ Cleaning Samples - Four post-cleaning wipe samples were collected and analyzed for dioxin. The results indicate that dioxin was present; however, the TEQ concentration for each sample was below the primary clearance criterion of 4 ng/m^ and were detected at lower concentrations than in the pre-cleaning samples. This indicates that the cleaning techniques were effective in reducing dioxin concentrations.
Gypsum Before Cleaning Samples - Pre-cleaning air samples were not collected.
Post Cleaning Samples - Two air samples were collected after the first cleaning. Gypsum was not detected above the detection limit of 0.008 mg/m’ in the air samples.
Lead Before Cleaning Samples - Three micro vacuum samples and four wipe samples were collected. One of the three micro vacuum samples was above the comparison value. The other two results were below the detection limit. The results indicate lead was present in two of the four wipe samples at concentrations above the primary clearance criterion of 25 gg/ft^. The micro vacuum samples exceeded the comparison value at 50.7 pg/ft^ and the two wipe samples exceeded the primary clearance criterion at 112 pg/ft^ and 201 pg/ft^.
Post 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 but were qualified as rejected due to field blank contamination. The results of the micro vacuum and wipe samples show that while one of the micro vacuum (qualified as rejected) and two of the wipes samples exceeded the detection limit, all samples met the comparison value and the primary clearance criterion for lead after the first cleaning. Therefore, additional samples were not collected for analysis of lead.
Alpha-Quartz Before Cleaning Samples - Pre-cleaning air samples were not collected.
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NYC-WTC_000145753
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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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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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