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
MMVF Before Cleaning Samples - Four wipe samples were collected. MMVF was detected in the wipe samples in concentrations from 286.16 S/cm^ to 2174.79 S/cm^.
Post Cleaning Samples - Three air samples and five wipe samples were collected after the first cleaning. All of the air sample results indicate that MMVF was present, but at levels below the primary clearance criterion of 10 S/L. All of the wipe sample results were in the range of57.23 S/cm^ to 572.31 S/cm^, which is lower than the pre-cleaning range. This indicates that the cleaning techniques were effective at reducing MMVF concentrations.
PAH Before Cleaning Samples - Four wipe samples were collected. Three of the four samples were below the detection limit with TEF values below the primary clearance criterion. The fourth sample had six PAH compounds detected; the calculated TEF slightly exceeded the primary clearance criterion of300 pg/m^ with a value of325.8 pg/m^.
Post P‘ Cleaning Samples - Four wipe samples were collected. All four samples were below the detection limit, and the TEF for each sample was below the primary clearance criterion of300 pg/m^.
Fourth Floor Hallway - The fourth floor hallway is an area with plywood floors and walls made of sheet rock covered with wallpaper glue. The ceiling is also made of sheet rock, and is painted.
Cleaning Method - This area was cleaned using Test 4A and Test 4B. Test 4A used an industrial HEPA-filtered vacuum and an AFD, while Test 4B consisted of a soap and water wet wipe of only the ceiling.
Cleaning Results - This unit met the clearance criteria listed in Table 1.0 for each compound after being cleaned once.
Asbestos Before Cleaning Samples - There were no samples collected before cleaning.
Post Cleaning Samples - One sample was collected after cleaning. The air sample was analyzed using PCM, TEM AHERA, and PCMe. The PCM result was below the secondary numeric criterion of 0.01 ftcc. Similarly, the TEM AHERA result was below the secondary numeric criterion of0.022 S/cc. The PCMe result was below the primary clearance criterion of0.0009 S/cc with the sample being below the detection limit.
Dioxin Before Cleaning Samples - There were no samples collected before cleaning.
Post Cleaning Samples - There were no post- cleaning samples collected.
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NYC-WTC_000145767
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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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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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