Report establishing health-based screening levels for the indoor environment with cross-agency representation.
NYC-WTC_000151128–000151140Folder label: “CONTRACTS CONTRACTORS - See: $ matrics etc file”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Air level: Evaluate conditions in the For those areas where air NYC area including levels would not warrant background representativeness of air removal of sensitive - 0.01 f/cc * samples, fibrous glass dust individuals, but are above the levels and loading. 0.001 f/cc, continued Or cleaning and evaluation is prudent. Settled Dust If air samples were not level: taken, then appropriate air Settled dust threshold is to sampling should be prote< t to at least a 1X10"^ 10,000 f/cm2 conducted to determine if risk estimate for a 30 year To fiber levels are elevated. exposure. Air concentrations 100,KE f/cm estimated for different 2 Take actions to reduce activities using a K factors exposures. based on Millette’s work on - clean area asbestos. Risk estimate is - resample based on estimates of air - ongoing cleaning levels, and duration of exposure for different activities. (10,000f7cm2 corresponds to a 1x10-4 risk for a 30 year exposure)
NYC-WTC_000151138
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NYC-WTC_000164862
Document introduction describing a cross-agency group tasked with identifying contaminants and establishing health-based screening levels.
15 shared non-person entities · 1 shared topics · similarity 0.999
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.
15 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.969
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.
13 shared non-person entities · 1 shared topics · similarity 0.969
machine-extracted · confidence unavailable · Check page ↗14 shared non-person entities · 1 shared topics · similarity 0.965
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.
14 shared non-person entities · 1 shared topics · similarity 0.965
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 0.964
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 · similarity 0.954
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.
3 shared non-person entities · 1 shared topics · similarity 0.954
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.
14 shared non-person entities · 1 shared topics · similarity 0.953
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.
9 shared non-person entities · 1 shared topics · 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.
5 shared non-person entities · 1 shared topics · similarity 0.951
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
NYC-WTC_000164862
Document introduction describing a cross-agency group tasked with identifying contaminants and establishing health-based screening levels.
Similarity score 1.000 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140652
Guidance document defining actions for elevated asbestos fiber levels in air and settled dust based on NYC background concentrations.
Similarity score 0.998 (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 0.996 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140825
Criteria for determining necessary actions when asbestos levels exceed background, including resampling and ongoing cleaning protocols.
Similarity score 0.993 (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 0.985 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140824
Guidelines for evaluating asbestos air levels and settled dust thresholds to determine if sensitive individuals should be removed.
Similarity score 0.983 (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.
Facsimile cover sheet transmitting documents regarding environmental work at 102 Greenwich Street.
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NYC-WTC_000128550
Asbestos inspection report notification form submitted to NYC DEP for 102-104 Greenwich Street.
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Cited alongside this record in an Ask answer
NYC-WTC_000140645
Documentation establishing Tier I, II, and III action levels for lead and other contaminants based on EPA and HUD guidance.
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NYC-WTC_000140817
Document describing the expanded monitoring program approach using existing regulations to define action levels for indoor air.
Cited alongside this record in an Ask answer