Circulation of draft environmental screening benchmarks for asbestos, fiberglass, and silica in indoor air and settled dust for expert review.
NYC-WTC_000159817–000159828Folder label: “E-MAILS SENT R. AVALTRONI”
OCR status: ok · source: pdftotext
z z o o i 1^ co
■D o c o Contribuition to risk of various asbestos dust ievels CT o o' cn "0 CD o co Risk = Conc(f/cc) * TWF * Slope factor ro 03 cn TWF is weighting factor for partial exposure (less than 70 years, 24 hrs a day) O Slope factor of 0.23 f/cc used over a 70 year exposure o o c 3 Low Fiber loading 1000 fZcm2 CD 3 Scenario Activity ioading K factor Airievei Years days/year hours/day TWF Contribution to Risk f/cc 1 Year exposure 1 Daily activi 2 Cleaning 1 1 i 1.0E-07 1.00E-04 1.0E-06 1.00E-03 1 1 350 50 24 0.013699 2 0, 1163 3.15E-07 3.75E-08 3.53E-07
30 Years exposure 1 Daily activi 1000 1.0E-07 1.00E-04 30 350 24 0.410959 9.45E-06 2 Cleaning 1 1.0E-06 1.00E-03 30 50 2 0.004892 1.13E-06 1.06E-05
70 Years exposure 1 Daily activi 1 152 1.0E-07 1.00E-04 70 350 24 0.958904 2.21 E-05 2 Cleaning 1000 1.0E-06 1.00E-03 70 50 2 0.011416 2.63E-06 2.47E-05
Moderate Fiber loading, 10,000fZcm2 Scenario Activity ioading K factor Air ievei Years days/year hours/day TWF Contribution to Risk f/cc 1 Year exposure 1 Daily activi 1 1552 1.0E-07 1.00E-03 1 350 24 0.013699 3.15E-06 2 Cleaning 10000 1.0E-06 1.00E-O2 1 50 2 0.1152163 3.75E-07 3.53E-06
30 Years exposure 1 Daily activi 1 1.0E-07 1.00E-03 30 350 24 0.410959 9.45E-05 2 Cleaning 1 1.0E-06 1.00E-02 30 50 2 0.004892 1.13E-05 1.O6E-04
70 Years exposure 1 Daily activi 1 1552 1.0E-07 1.00E-03 70 350 24 0.958904 2.21 E-04
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NYC-WTC_000160806
Forwarded EPA draft guidance on screening levels for asbestos, fiberglass, and silica in indoor air and settled dust for departmental review.
7 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000160788
DEP discussion of drafting water use exemption notice for contractors performing necessary WTC hazard remediation and facade cleanup work.
5 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.977
machine-extracted · confidence unavailable · Check page ↗6 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.974
machine-extracted · confidence unavailable · Check page ↗6 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.973
machine-extracted · confidence unavailable · Check page ↗5 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.972
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000160683
Transmission of WTC-related Q and A document to interagency task force with EPA Regional contact information.
5 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.968
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000162025
Report on asbestos air sampling at five locations borough-wide, showing levels below residential reoccupancy threshold except at Manhattan site requiring further fiber analysis.
3 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.966
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000141536
Request outlining DEP procurement and EPA supervision of cleaning and sampling contracts for Lower Manhattan residents.
5 shared non-person entities · 1 shared topics · similarity 0.970
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000108786
A document listing seven licensed contractors authorized to perform clean-up and abatement work at the World Trade Center site.
7 shared non-person entities · 1 shared topics · similarity 0.969
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164489
Discussion regarding asbestos sampling results in an apartment and potential release of a draft document.
4 shared non-person entities · 1 shared topics · similarity 0.969
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000141555
Document requesting FEMA mission assignment for indoor air testing and cleaning programs in Lower Manhattan.
5 shared non-person entities · 1 shared topics · similarity 0.967
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000141504
Request detailing residential cleaning, asbestos air testing, and HEPA vacuum distribution programs for Lower Manhattan with cost estimates.
5 shared non-person entities · 1 shared topics · similarity 0.967
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_000159807
Notice instructing staff to preserve original WTC documents as evidence for potential future legal actions against the City.
Filed in the same folder
NYC-WTC_000159808
Notice instructing staff to preserve original WTC documents as evidence for potential future legal actions against the City of New York.
Filed in the same folder
NYC-WTC_000159813
Forwarded revised Department of Health car interior decontamination protocols developed in coordination with DEP following feedback and comments from response agencies.
Filed in the same folder
NYC-WTC_000159829
Coordination memo for WTC recovery inter-agency meeting on building and parks assessment and scope.
Filed in the same folder
NYC-WTC_000159841
Memo describing negotiated agreement between Environmental Protection and FEMA addressing collective initiatives and responsibilities for Lower Manhattan economic revitalization…
Filed in the same folder