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
dioxin. The concentrations of dioxin were similar to the pre-cleaning samples. The TEQ concentration for each sample was below the criterion of 4 ng/m^
Post Cleaning Samples (Test 4E) - Three wipe samples were collected and analyzed for dioxin. The concentrations of dioxin were slightly lower than the pre-cleaning samples. The TEQ concentration for each sample was below the criterion of 4 ng/m^.
Gypsum Before Cleaning Samples - Pre-cleaning air samples were not collected.
Post P‘ Cleaning Samples (Test 4A) - Two air samples were collected. Gypsum was not detected in the air samples above the detection limit range of 0.008 mg/m’ to 0.017 mg/m^.
Post Cleaning Samples (Test 4B) - Two air samples were collected. Gypsum was detected in air at concentrations of 0.011 mg/m’ and 0.014 mg/m’.
Post Cleaning Samples (Test 4C} - Two air samples were collected. Gypsum was detected in air above the detection limit with the results of 0.009 mg/m’ to 0.012 mg/m^.
Lead Before Cleaning Samples - Four micro vacuum samples and four wipe samples were collected. Lead was detected in all of the micro vacuum samples and wipe samples. Three of the four micro vacuum results exceeded the comparison value of 25 pg/ft^, ranging from 28.2 pg/ft^ tol81 pg/ft^. Wipe sample concentrations exceeded the primary clearance criterion of 25 pg/ft^ in all of the samples, ranging in concentrations from 74.7 pg/ft2 to 433 pg/ft^.
Post Cleaning Samples (Test 4A) - Two air samples, four micro vacuum samples, and four wipe samples were collected after the first cleaning. The two air samples were below the primary clearance criterion of 1.0 pg/m\ The results of the micro vacuum and wipe samples show that, while all of the micro vacuum and two of the wipes samples were below the comparison value or primary clearance criterion. The remaining two wipe samples exceeded the primary clearance criterion with concentrations of 64.5 pg/ft^ and 146 pg/ft2.
Post Cleaning Samples (Test 4B) - Two air samples and four wipe samples were collected. The two air samples were below the primary clearance criterion of 1.0 pg/m’. Two of the four wipe samples exceeded the primary clearance criterion at concentrations of 147 pg/ft^ and 556 pg/tf.
Post Cleaning Samples (Test 4C) - Two air samples and four micro vacuum samples were collected. The two air samples both exceeded the primary clearance criterion at 1.89 pg/m^ and 2.56 pg/m^. All four micro vacuum samples were below the comparison value of 25 pg/ft^
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NYC-WTC_000145784
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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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