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
z z o o co g o I “0 o c o CT o o> Air level: Evaluate conditions in the area For those areas where air levels would o' "0 o o oo CD NYC background including representativeness of air not warrant removal of sensitive 03
- 0.01 fZcc * samples, fibrous glass dust levels individuals, but are above the 0.001 O o o and loading. f/cc, continued cleaning and c 3 CD Or evaluation is prudent. 3
Settled Dust level: If air samples were not taken, then Settled dust threshold is to protect to appropriate air sampling should be at least a 1X10^ risk estimate for a 30 10,000 fem’ conducted to determine if fiber year exposure. Air concentrations To levels are elevated. estimated for different activities using 100,000 fem’ a K factors based on Millette’s work Take actions to reduce exposures. on asbestos. Risk estimate is based on - clean area estimates of air levels, and duration of - resample exposure for different activities. - ongoing cleaning (10,000f/cm2 corresponds to a 1x10-4 risk for a 30 year exposure)
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NYC-WTC_000151128
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15 shared non-person entities · 1 shared topics · similarity 0.943
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.
18 shared non-person entities · 1 shared topics · similarity 0.941
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 0.936
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 0.935
machine-extracted · confidence unavailable · Check page ↗16 shared non-person entities · 1 shared topics · similarity 0.935
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000163599
Draft screening levels for asbestos, fiberglass and silica in indoor air and settled dust.
3 shared non-person entities · 1 shared topics · similarity 0.928
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000139416
Multi-agency discussion of benchmark reference levels for probable indoor contaminants of concern, including asbestos in air.
6 shared non-person entities · 1 shared topics · similarity 0.926
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000163606
Strawman benchmarks for probable indoor contaminants of concern related to WTC assessment.
6 shared non-person entities · 1 shared topics · similarity 0.924
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164455
Correspondence discussing draft EPA screening levels for asbestos and silica in indoor air and settled dust during post-WTC response.
4 shared non-person entities · 1 shared topics · similarity 0.922
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000153816
Document titled Environmental Monitoring of New York City After the World Trade Center attacks, dated November 26, 2001.
10 shared non-person entities · 1 shared topics · similarity 0.921
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 0.920
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145695
Form documenting the tracking and handling of environmental samples collected by the Department of Environmental Protection.
11 shared non-person entities · 1 shared topics · similarity 0.917
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
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NYC-WTC_000160529
Notice instructing staff to preserve original World Trade Center documents as potential legal evidence and not dispose of them.
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NYC-WTC_000160530
DEP memo documenting inconsistent dust control from WTC debris transport trucks affecting school reopening plans.
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NYC-WTC_000160536
DEP memo discussing WTC recovery contractor operations, fuel requirements, infrastructure repairs, and school proximity.
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NYC-WTC_000160537
Forwarded draft press release from NYC Department of Health regarding WTC environmental and health guidance.
Filed in the same folder