Forwarded EPA memorandum dated June 9, 2002, concerning the Asbestos Reservoir and carpet testing methods.
NYC-WTC_000140083–000140124Folder label: “EPA Cate Jenkins”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
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The sections in this memorandum include:
HOW TO USE ERA'S ULTRASONICATION EXTRACTION TEST Finding a lab and submitting samples
Ideas for taking carpet and other fabric samples
ASTM microvacuum method is inadequate for carpets and other woven fabrics
NYC APARTMENT BUILDING USES EPA’s ULTRASONIC CARPET TESTING
EPA FINDS HEPA VACUUMING DOES NOT REMOVE ASBESTOS FROM CARPETS, AND EPA POLICY ON CONTAMINATED CARPETS Regulations and policy on replacing asbestos-contaminated carpet
RELATING ASBESTOS DUST LEVELS WITH HEALTH RISKS
EPA’s zero standard for asbestos in dust
Data showing background levels of asbestos in dust inside buildings
Estimating air concentrations and risks from settled dust levels
REGION 1's BENCHMARK - SETTLED ASBESTOS DUST - BROOKFIELD SCHOOLS
Description of Region 2's risk assessment for settled asbestos dust: Use of a “K-factor” to back-calculate dust levels from background air levels
Region 1 misrepresentation of background air levels and safety levels
Region 1 chose an inapplicable K-factorto justify a higher dust level
Region 1 failed to use real-world background dust levels
Re-calculation of Region 1 dust benchmark with more appropriate values
Brookfield School System and community rejection of EPA Region 1 benchmark of 45,000 s/cm^ for dust
EPA REGION 2 BENCHMARK OF 1% ASBESTOS IN WTC DUST
Region 2 cafeteria-style derivation of 1% asbestos dust standard from out-of-context NESHAP regulations
EPA has established that 1% asbestos is not a safe level
EPA always regulates toxic dusts on interior surfaces by the amount per surface area, not the % in a dust
Region 2 reverses 1% standard for settled asbestos dust
APPENDIX A - CHART FOR ESTIMATING AIR ASBESTOS LEVELS FROM DUST
APPENDIX B - ASBESTOS AIR CONCENTRATIONS AND RISKS
ENDNOTES AND REFERENCES
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NYC-WTC_000140086
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NYC-WTC_000140040
Technical memorandum from EPA discussing ultrasonication testing for asbestos in carpets and HEPA vacuuming effectiveness.
31 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 1.000
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.
27 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.994
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.
18 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.988
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.
16 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.986
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.
13 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.979
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140127
Technical memorandum from EPA discussing ultrasonication testing for asbestos in carpets and HEPA vacuuming effectiveness.
10 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.978
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.
16 shared non-person entities · 1 shared topics · similarity 0.986
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000154652
Internal tracking document for managing reports, comments, and actions related to environmental compliance cases.
16 shared non-person entities · 1 shared topics · similarity 0.984
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.
17 shared non-person entities · 1 shared topics · similarity 0.969
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000094469
Letter from Enviroscience Consultants providing air and bulk sampling results for 86 Trinity Place.
6 shared non-person entities · similarity 0.959
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000161674
Document excerpt listing counsel and staff members assigned to a paper on infrastructure related to World Trade Center recovery.
13 shared non-person entities · 1 shared topics · similarity 0.958
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000154976
Correspondence criticizing the EPA and DEP regarding asbestos, silica levels, and safety clearance after cleaning at 114 Liberty Street.
12 shared non-person entities · 1 shared topics · similarity 0.956
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NYC-WTC_000140036
Administrative notice requiring preservation of World Trade Center-related documents as evidence for potential future legal actions against the City.
Filed in the same folder
NYC-WTC_000140038
Forwarded EPA memorandum dated June 9, 2002, concerning the Asbestos Reservoir and carpet testing methods.
Filed in the same folder
NYC-WTC_000140040
Technical memorandum from EPA discussing ultrasonication testing for asbestos in carpets and HEPA vacuuming effectiveness.
Filed in the same folder
NYC-WTC_000140080
Forwarded EPA memorandum dated June 9, 2002, concerning the Asbestos Reservoir and carpet testing methods.
Filed in the same folder
NYC-WTC_000140082
Reference chart comparing asbestos air concentration standards, detection limits, and lifetime cancer risk levels for fibers per milliliter PCM equivalents.
Filed in the same folder