Technical reference comparing conductivity measurements scaled as Low, Medium, and High with citation to asbestos dust level data from 1994.
NYC-WTC_000140749Folder label: “M.G: EPA INDOOR AIR WORKING GROUP MTGS.”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Comparison Standards
“Experience Standard” vs. Resuspension Factor
1000 s/cm^ = “Low” * 0.001 s/cm^
10,000 s/cm^ = “Above Background” * 0.01 s/cm^
100,000 s/cm^ = “High” * 0.10 s/cm^
From: “Settled Dust Sampling and Analysis,” Chapter 6, Data: Levels of Asbestos in Dust, page 49-50, James R. Millette and Steve M. Hays, Lewis Publishers, 1994, ISBN 0-87371- 948-4
* Potential Air Concentration Assuming K = 10’®
NYC-WTC_000140749
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_000140170
EPA memorandum on wipe sampling methods for asbestos in Lower Manhattan buildings, resuspension projections, and cancer risk estimates from WTC dust exposure.
2 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.890
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.
2 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.889
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.
2 shared non-person entities · 1 shared topics · similarity 0.897
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.
2 shared non-person entities · 1 shared topics · similarity 0.896
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164830
DEP internal memo circulating draft EPA screening level standards for asbestos, fiberglass, and silica in indoor air and settled dust for agency comment.
2 shared non-person entities · 1 shared topics · similarity 0.896
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.
2 shared non-person entities · 1 shared topics · similarity 0.893
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000154652
Internal tracking document for managing reports, comments, and actions related to environmental compliance cases.
2 shared non-person entities · 1 shared topics · similarity 0.893
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000163599
Draft screening levels for asbestos, fiberglass and silica in indoor air and settled dust.
2 shared non-person entities · 1 shared topics · similarity 0.892
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.
2 shared non-person entities · 1 shared topics · similarity 0.891
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.
2 shared non-person entities · 1 shared topics · similarity 0.891
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151128
Report establishing health-based screening levels for the indoor environment with cross-agency representation.
2 shared non-person entities · 1 shared topics · similarity 0.890
machine-extracted · confidence unavailable · Check page ↗2 shared non-person entities · 1 shared topics · similarity 0.890
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
Similarity score 0.933 (not a probability)
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.
Similarity score 0.932 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155407
Review of monitoring contractor specifications for asbestos and dioxin sampling at 114 Liberty Street.
Similarity score 0.931 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000174558
Report documenting the twentieth floor cleanup activities at 100 Church Street prepared by TRC Engineers.
Similarity score 0.931 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000178091
Sampling protocol developed to assess residential exposure to airborne and settled dust near the World Trade Center.
Similarity score 0.930 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155443
Request to verify sampling methodologies and detection limits in the 114 Liberty Street monitoring specifications.
Similarity score 0.928 (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.
NYC-WTC_000140640
Notice instructing staff to preserve original World Trade Center documents as potential evidence in future legal actions against the City.
Filed in the same folder
NYC-WTC_000140641
Agenda for a meeting discussing status of activities, public requests, and development of sampling and cleaning plans for WTC debris.
Filed in the same folder
NYC-WTC_000140642
Introduction to a cross-agency group tasked with identifying contaminants of concern and establishing health-based screening levels for the indoor environment.
Filed in the same folder
NYC-WTC_000140643
Documentation describing the methodology for identifying contaminants of concern using historical data and qualitative toxicity screens.
Filed in the same folder
NYC-WTC_000140644
Summary of contaminants removed from the review list due to being non-detectable or found only in trace amounts, including all VOCs.
Filed in the same folder