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
for asbestos. These samples indicate that asbestos was present in the unit prior to cleaning. All three micro vacuum samples detected chrysotile above the detection limit. Three of the four wipe samples were below the detection limit; however, chrysotile was detected in two of these samples. The fourth wipe sample was above the detection limit.
Post Cleaning - Three air samples, three micro vacuum samples, and five wipe samples were collected. The three air samples were analyzed using PCM, TEM AHERA, and PCMe. The PCM, TEM AHERA and PCMe analyses could not be conducted due to overloading of particulate material. Due to inconclusive asbestos air results, a second cleaning was conducted.
The results for the three micro vacuum samples indicate that asbestos was present at levels similar to or higher than those observed before cleaning. One of the samples was identified as non-detect, although asbestos was present below the detection limit.
The results for the five wipe samples that were collected indicate that asbestos was present in all five samples, although two samples were below the detection limit. The concentrations observed were similar to or higher than the pre-cleaning samples.
Post Cleaning - Three asbestos air samples were collected after the second cleaning. The samples were analyzed for PCM, TEM AHERA, and PCMe. The PCM results could not be obtained due to the filter being overloaded with particulate material. The TEM AHERA results for each sample were below the detection limit and below the secondary numeric criterion of0.022 S/cc. The PCMe results were all below the primary clearance criterion of 0.0009 S/cc, with all three of the samples below the detection limit. This indicates that the cleaning techniques used were able to reduce the particulate matter in the unit after the second cleaning, which permitted samples to be analyzed. The results of the analysis indicated that asbestos concentrations were below the primary clearance criterion of 0.0009 S/cc.
Diojdn Before Cleaning Samples - Three 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 Cleaning Samples - Four post-cleaning wipe samples were collected and analyzed for dioxin. The results indicate that the TEQ concentration for each sample was below the primary clearance criterion of 4 ng/m^.
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 in any sample.
Post Cleaning Samples - Two air samples were collected after the second cleaning.
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NYC-WTC_000145757
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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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