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: ocr · source: ours
NYC 9/11 Public Portal Document Tabte 16.0 The Use of an Air Filtraton Device Reduces the Occurrence of Overloaded Air Sample Filters AFD Used Y6S Number of Unis with or without Mfex for the trat clemnime 16 Number of Unts with One or More Overtoads Percentage of Units with Overlonds 38.9% 57.1% AFD Used Yes NO Number of Units with or withond AFDs for the Second Cleaning Number of Units with ar Least One Overload Percentage of Units with Overloads 0.05 40.0% Ais Used Number of Urts with or without AFD: for the Third Cleaning Number of wats w/at Least One Overload 0 Yes No Percentage of Units wth Overioaas 0.0% N/A 5.10 HVAC System The HVAC system was cleaned in two of the commercial units. The system was cleaned by professionals using equipment and techniques common to the industry that included HEPA- filtered vacuums, air whips, air washing and soap and water washes. Wipe samples were collected prior to cleaning and after cleaning for comparison. The results indicate that overall there was a reduction of an order of magnitude for the compounds which were detected. In The Food Exchange, lead was reduced from 1,310 ug/m' to 159 ug/m' (average), MMVF was reduced from 11,732 S/cm' to<57.3 S/cm? -. In the Lemongrass Grill, there was a reduction in lead concentrations from 10,700 ug/m° to 95.95 ug/m (average). This indicates that standard HVAC cleaning methods and equipment reduced the concentrations of WTC-related contaminants by an order of magnitude. The study found that standard HVAC cleaning methods educed the concentrations of WTC-related contaminants, 117 NYC-WTC_000145815
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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
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
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Machine-extracted building matches; verify each source. Buildings, never households.
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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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