DEP internal memo circulating draft EPA screening level standards for asbestos, fiberglass, and silica in indoor air and settled dust for agency comment.
NYC-WTC_000164830–000164834
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Contribuition to risk of various asbestos dust levels
Risk = Conc(f/cc) * TWF * Slope factor TWF is weighting factor for partial exposure (less than 70 years, 24 hrs a day) Slope factor of 0.23 f/cc used over a 70 year exposure
Low Fiber loading 1000 fZcm2 Scenario Activity loading K factor Air level Years days/year hours/day TWF Contribution to Risk f/cc I
1 Year exposure 1 Daily activi 1000 1.0E-07 1.00E-04 1 350 24 0.013699 3.15E-07 2 Cleaning 1 1.0E-06 1.00E-03 1 50 2 0. SEE 163 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 1000 1.0E-06 1.00E-03 30 50 2 0.004892 1.13E-06 1.06E-05
70 Years exposure 1 Daily activi 1000 1.0E-07 1.00E-04 70 350 24 0.958904 2.21 E-05 2 Cleaning 1 SEB 1.0E-06 1.00E-03 70 50 2 0.011416 2.63E-06 2.47E-05
! Moderate Fiber loading, 10,000f/cm2 Scenario Activity loading K factor Air level Years days/year hours/day TWF Contribution to Risk f/cc 1 Year exposure 1 Daily activi 10000 1.0E-07 1.00E-03 1 350 24 0.013699 3.15E-06 2 Cleaning 1 SEES 1.0E-06 1.00E-02 1 50 2 0.000163 3.75E-07 3.53E-06
30 Years exposure 1 Daily activi 1 SEEB 1.0E-07 1.00E-03 30 350 24 0.410959 9.45E-05 2 Cleaning 10000 1.0E-06 1.00E-02 30 50 2 0.004892 1.13E-05 1.06E-04
70 Years exposure 1 Daily activi 1 SEEB 1.0E-07 1.00E-03 70 350 24 0.958904 2.21 E-04
NYC-WTC_000164834
OCR can misread numbers and units. Confirm readings against the page image before using them.
Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.
NYC-WTC_000164455
Correspondence discussing draft EPA screening levels for asbestos and silica in indoor air and settled dust during post-WTC response.
5 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.981
machine-extracted · confidence unavailable · Check page ↗4 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.959
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.
4 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.951
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000163599
Draft screening levels for asbestos, fiberglass and silica in indoor air and settled dust.
4 shared non-person entities · 1 shared topics · similarity 0.988
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000139634
DEP memo forwarding EPA draft screening level calculations for asbestos, fiberglass, and silica in indoor air and settled dust for review.
5 shared non-person entities · 1 shared topics · similarity 0.975
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.
4 shared non-person entities · 1 shared topics · similarity 0.960
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000154652
Internal tracking document for managing reports, comments, and actions related to environmental compliance cases.
3 shared non-person entities · 1 shared topics · similarity 0.956
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000163606
Strawman benchmarks for probable indoor contaminants of concern related to WTC assessment.
3 shared non-person entities · 1 shared topics · similarity 0.950
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151128
Report establishing health-based screening levels for the indoor environment with cross-agency representation.
4 shared non-person entities · 1 shared topics · similarity 0.950
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151635
EPA memorandum detailing plans for asbestos wipe sampling, projecting airborne dust levels, and estimating increased cancer risks from WTC dust exposure.
3 shared non-person entities · 1 shared topics · similarity 0.949
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000162253
EPA proposal for asbestos clearance criteria applied to WTC indoor cleanup operations.
3 shared non-person entities · 1 shared topics · similarity 0.949
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140259
Memorandum detailing procedures for asbestos wipe sampling in Lower Manhattan and estimating associated cancer risks from dust exposure.
3 shared non-person entities · 1 shared topics · similarity 0.949
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
Page similarity is temporarily unavailable or this page has no indexed vector.
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.
NYC-WTC_000163599
Draft screening levels for asbestos, fiberglass and silica in indoor air and settled dust.
Similar indexed content
NYC-WTC_000164455
Correspondence discussing draft EPA screening levels for asbestos and silica in indoor air and settled dust during post-WTC response.
Similar indexed content
NYC-WTC_000139634
DEP memo forwarding EPA draft screening level calculations for asbestos, fiberglass, and silica in indoor air and settled dust for review.
Similar indexed content
NYC-WTC_000162222
EPA staff distributed an environmental laboratory report to federal and city agencies on May 15, 2002.
Similar indexed content
Similar indexed content