EPA notice of chain-of-custody and benchmarks presentation for WTC Taskforce meeting on April 8, 2002.
NYC-WTC_000160878–000160893Folder label: “E-mails R. Avaltroni 2002”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
What's offthe 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 000160881
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NYC-WTC_000164862
Document introduction describing a cross-agency group tasked with identifying contaminants and establishing health-based screening levels.
18 shared non-person entities · 1 shared topics · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151128
Report establishing health-based screening levels for the indoor environment with cross-agency representation.
15 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗16 shared non-person entities · 1 shared topics · similarity 0.974
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.
16 shared non-person entities · 1 shared topics · similarity 0.973
machine-extracted · confidence unavailable · Check page ↗17 shared non-person entities · 1 shared topics · similarity 0.969
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000176160
Draft assessment summarizing eight months of monitoring data regarding air, dust, and water contaminants at the WTC site and surrounding areas.
17 shared non-person entities · 1 shared topics · similarity 0.968
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140651
Documentation setting dioxin action levels for indoor air and providing initial guidance on asbestos fiber concentration risk estimates.
3 shared non-person entities · 1 shared topics · similarity 0.958
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.
17 shared non-person entities · 1 shared topics · similarity 0.958
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000176140
Appendix document outlining health protective screening values and contaminants of concern for WTC site workers and Lower Manhattan residents.
11 shared non-person entities · 1 shared topics · similarity 0.957
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164830
DEP internal memo circulating draft EPA screening level standards for asbestos, fiberglass, and silica in indoor air and settled dust for agency comment.
4 shared non-person entities · 1 shared topics · similarity 0.957
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000186132
Draft document outlining health effects screening criteria for ambient air developed by EPA Region 2 in October 2002.
10 shared non-person entities · 1 shared topics · similarity 0.954
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164877
Proposal detailing a survey to assess seven preliminary contaminants in 100 buildings within a four-block radius of the World Trade Center site.
5 shared non-person entities · 1 shared topics · similarity 0.953
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
NYC-WTC_000140816
Document explaining the exclusion of VOCs and other chemicals from the contaminant of concern list due to trace amounts.
Similarity score 1.000 (not a probability)
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.
Similarity score 0.996 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151128
Report establishing health-based screening levels for the indoor environment with cross-agency representation.
Similarity score 0.994 (not a probability)
machine-extracted · confidence unavailable · Check page ↗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.
Similarity score 0.966 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.941 (not a probability)
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.
Similarity score 0.941 (not a probability)
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