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
cleaning method was used for each cleaning event.
Cleaning Results - This unit met the clearance criteria listed in Table 1.0 for each compound after being cleaned once.
Asbestos Before Cleaning Samples - Pre-cleaning wipe samples were collected for asbestos. The results for these samples indicate that asbestos was present in the unit prior to cleaning. Two of the five wipe samples were below the detection limit, although one of these samples had chrysotile detected. The remaining three samples had chrysotile detected above the detection limit.
Post P‘ Cleaning - Three air and five wipe samples were collected. The three air samples were analyzed using PCM and PCMe. The PCM results were all below the secondary numeric criterion of 0.01 f/cc. The PCMe results for each sample were below the primary clearance criterion of 0.0009 S/cc and were reported as below the detection limit.
The results for the five wipe samples that were collected indicate that asbestos was present in two of the five samples; however one of these samples was below the detection limit. The remaining three samples were below the detection limit.
Dioxin Before Cleaning Samples - Four pre-cleaning wipe samples were collected and analyzed for dioxin. The results indicate that there was dioxin 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.
Le^ Before Cleaning Samples - Four pre-cleaning wipe samples were collected. The results indicate that lead was detected in three of the four wipe samples with two samples exceeding the primary clearance criterion of 25 pg/ft^. One sample was slightly over the primary clearance criterion with a result of 30 pg/ft^ while the second was twice the primary clearance criterion with a result of 50 pg/ft^.
Post P‘ Cleaning Samples - Two air samples and four wipe samples were collected after the first cleaning. The two air samples were above the detection limit but below the primary clearance criterion of 1.0 pg/m^. Three of the four wipe samples were below the detection limit. The fourth wipe sample was above the detection limit but below the
62
NYC-WTC_000145760
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