Table defining Tier I, II, and III action levels for dioxin in settled dust with associated cleaning recommendations.
NYC-WTC_000140822Folder label: “B.Avaltroni EPA INDOOR AIR TASK FORCE”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
* benzo(a)pyrene equivalents
*Dioxin (settled dust)
Tier Screening Value Basis Action I >70 ng/m^ **Risk-based screening level Aggressive cleaning - if for residential setting levels persist, take additional (E-04 X lyr), 1/10 average action to reduce exposure dietary intake
NYC-WTC_000140822
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Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.
NYC-WTC_000140820
Table defining Tier I, II, and III action levels for PAHs in settled dust based on residential risk assessments.
1 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.945
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.
2 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.938
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.
1 shared topics · Same agency, volume and box · similarity 0.933
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140649
Documentation defining action thresholds for PAHs in indoor air based on residential risk assessments and background concentrations.
1 shared topics · Same agency, volume and box · similarity 0.933
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.
2 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.916
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.
1 shared non-person entities · Same agency, volume and box · similarity 0.896
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.
2 shared non-person entities · 1 shared topics · similarity 0.935
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000160878
EPA notice of chain-of-custody and benchmarks presentation for WTC Taskforce meeting on April 8, 2002.
2 shared non-person entities · 1 shared topics · similarity 0.935
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151128
Report establishing health-based screening levels for the indoor environment with cross-agency representation.
2 shared non-person entities · 1 shared topics · similarity 0.935
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.
2 shared non-person entities · 1 shared topics · similarity 0.906
machine-extracted · confidence unavailable · Check page ↗2 shared non-person entities · 1 shared topics · similarity 0.904
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.
2 shared non-person entities · 1 shared topics · similarity 0.902
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
NYC-WTC_000160878
EPA notice of chain-of-custody and benchmarks presentation for WTC Taskforce meeting on April 8, 2002.
Similarity score 1.000 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140820
Table defining Tier I, II, and III action levels for PAHs in settled dust based on residential risk assessments.
Similarity score 0.973 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000160878
EPA notice of chain-of-custody and benchmarks presentation for WTC Taskforce meeting on April 8, 2002.
Similarity score 0.972 (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 0.970 (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 0.970 (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 0.970 (not a probability)
machine-extracted · confidence unavailable · Check page ↗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_000140816
Document explaining the exclusion of VOCs and other chemicals from the contaminant of concern list due to trace amounts.
Filed in the same folder