NYC-WTC_000163606
Strawman benchmarks for probable indoor contaminants of concern related to WTC assessment.
7 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗Document / 5 pages
Indoor COCs benchmark levels discussion, March-April 2002
Machine-extracted title · confidence 72%Multi-agency discussion of benchmark reference levels for probable indoor contaminants of concern, including asbestos in air.
NYC-WTC_000139416–000139420Folder label: “2002 E-Mail Sent M. Gilsenan”
Page image
OCR text
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Lead (settled dust)
--- j------------- + Tier I Screening Value I Action
I I > 40 ug/ft2 or 1,200 ppm i aggressive cleaning I I (professional?) -- if I I readings persist take I I additional action to reduce I I exposure + +---------------------------- II I 400 - 1,200 ppm I maintain recommended (i.e., I I diligent wet/HEPA) cleaning 1 I methods - consider I 1 additional monitoring +---------------------------- III 1 <40 ug/tt or 400 ppm 1 no further action +----------------------------
Lead (indoor air)
+ + Tier I Screening Value I Action + + I I >1.5 ug/m3 (NAAQS) 1 aggressive cleaning I I I (professional?) - if 1 I 1 readings persist take 1 I 1 additional action to reduce 1 I I exposure | + +---------------------------- 1 II I background - 1.5 ug/m3 1 maintain recommended (i.e., 1 I 1 diligent wet/HEPA) cleaning I I I methods - consider I I additional monitoring I 1 III I < background I no further action I '+ I
3
NYC-WTC_000139418
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NYC-WTC_000139418Source: NYC Law Department, mirrored locally
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NYC-WTC_000164835
DEP memo forwarding draft benchmark levels for indoor contaminants of concern developed by DHHS, EPA, and OSHA for interagency review and approval.
8 shared non-person entities · 1 shared topics · similarity 0.985
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 0.964
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000154652
Internal tracking document for managing reports, comments, and actions related to environmental compliance cases.
6 shared non-person entities · 1 shared topics · similarity 0.961
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.
6 shared non-person entities · 1 shared topics · similarity 0.959
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140170
EPA memorandum on wipe sampling methods for asbestos in Lower Manhattan buildings, resuspension projections, and cancer risk estimates from WTC dust exposure.
6 shared non-person entities · 1 shared topics · similarity 0.958
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.
6 shared non-person entities · 1 shared topics · similarity 0.958
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000125845
Draft fact sheet from DOH and DEP addressing tenant concerns regarding asbestos fibers at 105 Duane Street.
6 shared non-person entities · 1 shared topics · similarity 0.952
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140138
EPA memorandum addressing World Trade Center asbestos contamination status and agency efforts to provide information on the situation.
6 shared non-person entities · 1 shared topics · similarity 0.951
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.
6 shared non-person entities · 1 shared topics · similarity 0.951
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 0.950
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140235
Memorandum comparing asbestos data in Manhattan to other sites and arguing for cleanup under the Superfund statute.
6 shared non-person entities · 1 shared topics · similarity 0.950
machine-extracted · confidence unavailable · Check page ↗More like this page
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