Document explaining the exclusion of VOCs and other chemicals from the contaminant of concern list due to trace amounts.
NYC-WTC_000140816Folder label: “B.Avaltroni EPA INDOOR AIR TASK FORCE”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
What’s off the List
1) Many contaminants were either routinely ND or found in trace amounts
2) Categorical decision to delete all VOCs
2) Focus on select group of “high profile” chemicals for specific justification to delete:
Chemical Why Why Not Benzene high concentrations (>PEL) on pile mostly ND at perimeter of site PCBs historical lightening rod serial air sampling all ND Mercury Port Authority Police screening trace amounts in air/dust Chromium commonly detected in air sampling contamination of sample blanks PM (2.5 & 10) dust cloud numerous indoor sources
NYC-WTC_000140816
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_000140644
Summary of contaminants removed from the review list due to being non-detectable or found only in trace amounts, including all VOCs.
6 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.932
machine-extracted · confidence unavailable · Check page ↗6 shared non-person entities · Same agency, volume and box · similarity 0.890
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000141116
EPA news summary dated October 16, 2001, regarding environmental monitoring data collected from the World Trade Center site.
4 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.890
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151128
Report establishing health-based screening levels for the indoor environment with cross-agency representation.
4 shared non-person entities · 1 shared topics · similarity 0.899
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164862
Document introduction describing a cross-agency group tasked with identifying contaminants and establishing health-based screening levels.
7 shared non-person entities · 1 shared topics · similarity 0.898
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000130435
Summary of asbestos air sampling results from October 1, 2001, including PCM and TEM standard comparisons for NYC and NJ locations.
4 shared non-person entities · 1 shared topics · similarity 0.893
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000153214
Draft plan to assess community exposure to volatile organic compounds and particulate matter near the WTC site.
2 shared non-person entities · 1 shared topics · similarity 0.892
machine-extracted · confidence unavailable · Check page ↗6 shared non-person entities · 1 shared topics · similarity 0.890
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000162222
EPA staff distributed an environmental laboratory report to federal and city agencies on May 15, 2002.
6 shared non-person entities · 1 shared topics · similarity 0.890
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.
6 shared non-person entities · 1 shared topics · similarity 0.888
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000130438
Draft special investigative audit report on environmental data from the World Trade Center site prepared by IT Corporation.
6 shared non-person entities · similarity 0.887
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000148952
Table listing volatile organic compound (VOC) sampling sites and dates outside of Ground Zero from September 2001 to January 2002.
6 shared non-person entities · 1 shared topics · similarity 0.887
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.
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.
Notice instructing staff to preserve original WTC documents as potential evidence in future legal actions against the City.
Filed in the same folder
NYC-WTC_000140813
Meeting notice for task force discussion of Contaminants of Concern and benchmarks presentation scheduled for April 8, 2002.
Filed in the same folder
NYC-WTC_000140814
Document outlining the creation of a cross-agency group tasked with identifying contaminants of concern and establishing screening levels.
Filed in the same folder
NYC-WTC_000140815
Document detailing the methodology for identifying contaminants of concern and listing seven tentatively identified substances.
Filed in the same folder
NYC-WTC_000140817
Document describing the expanded monitoring program approach using existing regulations to define action levels for indoor air.
Filed in the same folder