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
Post P* Cleaning - Five air samples were collected from the first floor and one air sample was collected from the basement. The samples were analyzed for PCM, TEM AHERA, and PCMe. The PCM, TEM AHERA and PCMe analyses of the five samples collected from the first floor could not be conducted due to overloading of particulate material. The sample collected from the basement met the primary clearance criterion and secondary numeric criterion.
Post 2”^ Cleaning - Seven air samples were collected after the second cleaning. The samples were analyzed for PCM, TEM AHERA, and PCMe. The PCM results were all below the secondary numeric criterion of 0.01 free. Five of the samples were below the detection limit. The TEM AHERA results were all below the secondary numeric criterion of 0.022 S/cc, with six of the seven samples below the detection limit. The PCMe results were all below the primary clearance criterion of 0.0009 S/cc, with six of the seven samples below the detection limit. The seventh sample was at the detection limit of 0.0005 S/cc. This indicates that the cleaning techniques were effective at removing particulate matter after the first cleaning, which allowed valid asbestos air samples to be collected. The results indicate that the unit met the primary clearance and secondary numeric criteria.
HVAC System - Four air samples and two wipe samples were collected after the HVAC system was cleaned. The air samples were analyzed for PCM, TEM AHERA, and PCMe. The PCM results were all below the secondary numeric criterion of 0.01 free. The TEM AHERA results indicate that two samples were below the detection limit and that two samples were equal to the detection limit of 0.0005 S/cc. The PCMe results indicate that all four samples were below the detection limit of 0.0005 S/cc.
The results for the two asbestos wipe samples indicate that both samples were below the detection limit. The detection limit (12,100 S/cm^) was higher than the detection limit (approximately 3,000 S/cm^) for most other wipe samples on this project.
Dioxin Before deeming Semiples - There were no samples collected and analyzed for dioxin.
Post Cleaning Samples - There were no samples collected and analyzed for dioxin.
HVAC System - There were no samples collected and analyzed for dioxin.
Gypsum Before deeming Samples - Pre-cleaning air samples were not collected. .
Post P‘ deeming Samples - There were no samples collected after the first cleaning for gypsum.
HVAC System - One air sample was collected for gypsum. This sample was below the detection limit.
93
NYC-WTC_000145791
OCR can misread numbers and units. Confirm readings against the page image before using them.
Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.
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
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
Page similarity is temporarily unavailable or this page has no indexed vector.
Machine-extracted building matches; verify each source. Buildings, never households.
Readers open these alongside this record — through an Ask answer, the same folder, or indexed similarity. Not a claim they are about the same event.
Archival folder label for September 11 news clippings from the Office of the Mayor, identified as Folder 0123.
Cited alongside this record in an Ask answer
Updated memorandum defining the Red Zone boundaries and listing authorized agencies for entry into the restricted area.
Cited alongside this record in an Ask answer
NYC-WTC_000142373
Directory of organizations providing financial aid, job placement, and space assistance to businesses affected by the disaster.
Cited alongside this record in an Ask answer
NYC-WTC_000145027
Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
Cited alongside this record in an Ask answer
Policy document outlining NYPD access requirements for building owners and contractors at the site in October 2001.
Cited alongside this record in an Ask answer