16 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.969
machine-extracted · confidence unavailable · Check page ↗Document / 13 pages
COC/[name] update document introduction, April 2002
Machine-extracted title · confidence 100%Document introduction describing a cross-agency group tasked with identifying contaminants and establishing health-based screening levels.
NYC-WTC_000164862–000164874Page image
OCR text
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
Benchmark Development Approach
NYC-WTC_000164864
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NYC-WTC_000164864Source: NYC Law Department, mirrored locally
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4 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.951
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.
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machine-extracted · confidence unavailable · Check page ↗Filed elsewhere
NYC-WTC_000151128
Report establishing health-based screening levels for the indoor environment with cross-agency representation.
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EPA staff distributed an environmental laboratory report to federal and city agencies on May 15, 2002.
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140651
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140649
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140647
Table defining action thresholds for lead in indoor air using NAAQS and background values to determine required cleaning measures.
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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 0.953
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140648
Table establishing risk-based screening levels for polycyclic aromatic hydrocarbons in settled dust with corresponding remediation actions.
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140823
Table establishing Tier I, II, and III thresholds for dioxin in indoor air with associated cleaning actions.
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140650
Table outlining risk-based screening levels for dioxins in settled dust with specific cleaning requirements for exceeding thresholds.
3 shared non-person entities · 1 shared topics · similarity 0.948
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