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
Tridymite Before Cleaning Samples - Pre-cleaning air samples were not collected.
Post P‘ Cleaning Samples - Two air samples were collected after the first cleaning. One was below the detection limit and one was slightly above the detection limit.
MMVF Before Cleaning Samples - Three pre-cleaning wipe samples were collected. All three samples were above the detection limit.
Post P* Cleaning Samples - Three air samples and five wipe samples were collected after the first cleaning. The results indicate that MMVF was present in all three, with two samples being above the primary clearance criterion of 10 SZL. The third was below the primary clearance criterion. The results of the five wipe samples indicate that MMVF was still present after the first cleaning at concentrations similar to or higher than the pre cleaning samples. There is not a clearance criterion for MMVF in settled dust; however, since two of the air samples were above the primary clearance criterion, additional air samples were collected for analysis of MMVF.
Post Cleaning - Five air samples were collected after the third cleaning. The results indicate that the two of the five samples were above the primary clearance criterion. Due to this situation, additional air samples were collected after the third cleaning.
Post 3''‘^ Cleaning - Two air samples were collected after the second cleaning. The results indicate that both samples were below the primary clearance criterion and below the detection limit.
PAH Before Cleaning Samples - Three pre-cleaning wipe samples were collected. Two of the three samples were below the detection limit; the TEF for these samples was below the primary clearance criterion. The third sample had four PAH compounds detected; the calculated TEF was 303.5 pg/m^ which is slightly above the primary clearance criterion of 300 pg/m^.
Post Cleaning Samples - Four wipe samples were collected after the first cleaning. All were below the detection limit. The TEF for each sample was below the primary clearance criterion of 300 pg/m^. Since all of the samples were below the detection limit and the primary clearance criterion after the first cleaning, no additional samples were collected for analysis of PAH.
Unit 5D - This unit is on the fifth floor. It is a 1,024 sq. ft. open loft facing the World Trade Center site. This unit had windows that were blown in, which resulted in significant dust accumulation. The dwelling has hardwood floors with no carpet. All personal items were removed prior to cleaning.
Cleaning Method - This unit was cleaned using Test 3B: an industrial HEPA-filtered vacuum and
76
NYC-WTC_000145774
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