EPA letter confirming that primary and secondary clearance levels for asbestos and other contaminants were met at 114 Liberty Street.
NYC-WTC_000102521–000102524Folder label: “SCOPE OF WORK ADDENDUMS WORK SCHEDULE”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
COPC document, which was adopted as a secondary clearance value for this project, is 1 µg/m3. Although the value chosen for this project was I µg/m3, the analytical detection limit available for analyzing crystalline silica in indoor air samples is higher than this value, therefore a result that is below the detection limit is considered to be protective of public health. Four out of eleven samples (36%) were above the detection limit of 11 µg/m3, ranging from 17.2 to 22.1 µg/m3. These values are also above the secondary clearance value.
Although these values are above the clearance value, they are similar to concentrations detected in a background study conducted by USEPA. In the USEPA background study, there was a frequency of detection of 25%, with a range of 4 to 259 µg/m 3. Further, the values from the background study without the maximum value of 259 µg/m3, provide a range of 4 to 28 µg/m3. This indicates that the range of values observed in 114 Liberty Street are similar to those observed in the background study. Based on this, it has been determined that the crystalline silica results are similar to background values and therefore additional cleaning is not necessary.
NYC-WTC 000102524
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NYC-WTC_000102633
A Department of Environmental Protection letter dated April 24, 2003, confirming the completion of clean-up activities and clearance levels at 114 Liberty Street.
12 shared non-person entities · Same agency, volume and box · similarity 0.967
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.
12 shared non-person entities · 1 shared topics · similarity 0.998
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.
12 shared non-person entities · 1 shared topics · similarity 0.997
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.
12 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000100789
Laboratory analysis results for asbestos content in beige bulk samples collected from a pizzeria on one of the building floors.
12 shared non-person entities · similarity 0.986
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000100796
Laboratory analysis results for asbestos content in beige bulk samples collected from a pizzeria on one of the building floors.
12 shared non-person entities · similarity 0.985
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.
11 shared non-person entities · 1 shared topics · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155002
Federal agencies respond to resident concerns regarding the validity of environmental clearance data for 114 Liberty Street.
12 shared non-person entities · similarity 0.972
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000154948
Federal agencies respond to resident concerns regarding the validity of environmental clearance data for 114 Liberty Street.
12 shared non-person entities · similarity 0.971
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151361
A letter defending the validity of DEP and contractor data used to clear residential units at 114 Liberty Street for re-occupancy.
12 shared non-person entities · similarity 0.971
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151379
A letter confirming that DEP has completed all specified clean-up and monitoring activities for 114 Liberty Street.
12 shared non-person entities · similarity 0.969
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.
10 shared non-person entities · 1 shared topics · similarity 0.964
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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NYC-WTC_000102520
Fragmented document page containing minimal text and a reference number from the scope of work addendums collection.
Filed in the same folder
NYC-WTC_000102525
Fragmented document page containing minimal text and a reference number from the scope of work addendums collection.
Filed in the same folder
NYC-WTC_000102526
Chain of custody form for asbestos bulk analysis samples collected at 114 Liberty Street on March 17, 2003.
Filed in the same folder
NYC-WTC_000102534
Chain of custody form for asbestos bulk analysis samples collected at 114 Liberty Street on March 17, 2003.
Filed in the same folder
NYC-WTC_000102542
NYC DEP asbestos project notification form for inspection and abatement activities at 114 Liberty Street.
Filed in the same folder