|
The document discusses the anticipated release of an annual exposure level for C8 (PFOA) by TERA, detailing production estimates and modeling studies for 2003, and requests confirmation of production rates and scrubber efficiencies from DuPont colleagues.
|
2002 |
AR226-2277
|
aJEkJMn5GN211wLQ09VLvNVje |
4 |
|
The document summarizes a meeting on April 24, 2002, involving DuPont and West Virginia Department of Environmental Protection representatives discussing an air modeling report related to C8 (PFOA) emissions, where questions were raised about data accuracy and methodology, particularly regarding particle size distribution and emission levels.
|
2002 |
AR226-2280
|
OJ1B9LZEzEwow50MQJXNek8pK |
3 |
|
The document is an email from Debbie J. Mulrooney of DuPont discussing the receptor grid used for modeling deposition in the Little Hocking watershed, which is related to PFOA, and providing details for the grid setup to a colleague at the West Virginia Department of Environmental Protection.
|
2002 |
AR226-2282
|
nRnjy33LadGVvmLmg32vpg9a |
1 |
|
The document discusses modeling soil concentrations of a persistent chemical, likely PFOA or PFOS, using a mass balance approach and suggests using the PRZM model for more accurate estimations of soil concentration based on various factors such as volatilization, degradation, and plant uptake.
|
2002 |
AR226-2283
|
n9yq8LYvKM4vZGGK1jejjx5XX |
1 |
|
The document discusses the establishment of screening levels for PFOA at DuPont's Spruance facility, indicating specific concentration limits for drinking water, soil, and air, and outlines the need for potential operational changes to meet these standards.
|
2002 |
AR226-2286
|
4aeajo50BVZ8Lda8K0OjrJgje |
1 |
|
The document discusses the need for DuPont to re-evaluate their sampling plans for C-8 (PFOA) in light of a new drinking water standard, suggesting a meeting to address the issue.
|
2002 |
AR226-2285
|
6Rvz0kda1agQmnvpQrnaMVZ3 |
3 |
|
The document is an email from Chris E. Shoop to Mohammad Rezaei and others at DuPont regarding the correction of stack identifications for modeling C-8 emissions, specifically noting that the identities for FE P Lines 1 and 2 have been incorrectly assigned.
|
2002 |
AR226-2288
|
v1XGwyY8wqOowXZ5pa1zLno9Y |
1 |
|
The document discusses the release of a report by the West Virginia Department of Environmental Protection on safe levels of C8 (PFOA), a chemical used by DuPont, and mentions a related press release.
|
2002 |
AR226-2289
|
jjRBmVaY7qOndp036QnN168p |
2 |
|
The document is an email from Chris E. Shoop to Debbie J. Mulrooney and others at DuPont discussing emission estimates for PFOA and surfactants for the years 2001, 2002, and 2003, along with a request for confirmation on the efficiency estimates used in the calculations.
|
2002 |
AR226-2290
|
O3D6Dx7GVn6zdG1nqYa1rORKQ |
1 |
|
The correspondence discusses the ongoing efforts by DuPont to reduce C-8 (PFOA) emissions in the air to a target concentration of 0.3 µg/m³, with a request for more details on measuring such low levels and mentions the pH levels of recovered C-8.
|
2002 |
AR226-2291
|
ga1E4d3v6ObnzzkKyVJaw4pZV |
1 |
|
This document discusses the development of emission data for modeling studies related to PFOA emissions from DuPont's production processes in 2001 and 2002, including details on the efficiency of scrubbers used to control these emissions.
|
2002 |
AR226-2292
|
4J6j8X425QpJMZL88Gn2ZdzaN |
6 |
|
The document discusses a permit determination regarding the proposed installation of facilities at DuPont to evaluate reducing emissions of perfluorinated compounds, specifically indicating that modeling results show no increase in emissions and a potential reduction, with a minor change in concentration from 0.637 to 0.638 µg/m³.
|
2002 |
AR226-2293
|
DdMmN0YYY5yYJ4y7mD3bRJYGQ |
1 |
|
DuPont conducted an air dispersion modeling analysis of APFO emissions from its Washington Works facility in Parkersburg, West Virginia, to predict long-term ambient air concentrations based on actual emissions from the year 2002.
|
2002 |
AR226-2343
|
15yN8nZv1j448Gj0z00Ky5eLj |
8 |
|
The document is an air dispersion modeling analysis of APFO emissions conducted by DuPont for the West Virginia Department of Environmental Protection, covering the period from September 2002 to August 2003.
|
2002 |
AR226-2344
|
RJdgGm8B0d3oj1xNVKYzn0498 |
8 |
|
The document is a revised air dispersion modeling analysis of APFO emissions conducted by DuPont at its Washington Works facility in Parkersburg, West Virginia, covering the period from September 2002 to August 2003, which includes an emissions inventory and modeling procedures to predict ambient air concentrations of APFO.
|
2002 |
AR226-2361
|
3Q3OQ1kvrXqg23yvEL7oe06kO |
9 |
|
The document is an email correspondence discussing environmental coordination related to the C8 issue, specifically seeking feedback on organizational strengths and service timeliness from David M Rurak at DuPont regarding perfluorinated compounds.
|
2002 |
AR226-2486
|
J8778j4D9dZBEjQdGEbD6Xne |
1 |
|
This is an email from Stephen R. Peck to Yasu Shibuta regarding the procedure for the analytical determination of APFO, with additional recipients included in the correspondence.
|
2002 |
AR226-2509
|
ypdd4LgB3koDqm5yE1Zj8Q2Lr |
1 |
|
The document discusses the introduction of a new method for measuring C-8 (PFOA) levels in wastewater at the Shimizu lab, specifically the installation of an ECD Gas Chromatography apparatus, and seeks advice from Stephen Peck regarding this analysis.
|
2002 |
AR226-2511
|
BR6MEM0nVwryaYB81Zn0bDdX8 |
1 |
|
The document discusses efforts by DuPont employees to standardize methods for measuring C-8 (PFOA) levels in wastewater across different sites, specifically mentioning the transition to using ECD gas chromatography for analysis.
|
2002 |
AR226-2514
|
pexG0KB2wMNQkEbxnDN2QErd |
2 |
|
The document discusses the clarification of analytical methods for sampling perfluorooctanoic acid (PFOA) in different media, specifically noting that the same methods used for aqueous samples do not apply to air sampling, and mentions the intention to forward the Quality Assurance Project Plan (QAPP) for review.
|
2002 |
AR226-2515
|
JrjLewRBEEV7NMrkY5XxB75LX |
1 |
|
The document is an email correspondence between Hidetaka Hiromatsu and Andrew S. Hartten discussing the analysis of APFO (Ammonium Perfluorooctanoate) and the possibility of using Mitsui Chemicals for testing due to busy schedules at DuPont's labs.
|
2002 |
AR226-2512
|
XRLdEJYrJ66jgqq6z4QE4MVyB |
4 |
|
The document discusses the need for DuPont's global analytical teams to converge on standardized measurement methods for C-8 compounds, specifically in the context of wastewater analysis, highlighting the importance of sharing existing standardized methods among teams.
|
2002 |
AR226-2516
|
jBNjQVZvpLLenVY3y1vd0m5Z9 |
1 |
|
This document discusses DuPont's use of Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS) for the analysis of PFOA (C-8) in aqueous samples, highlighting the method's accuracy and the company's transition from less accurate GC/ECD methods.
|
2002 |
AR226-2513
|
MJmwnx3ZN5pjwvKRJq8r4azYy |
4 |
|
The document reports the C-8 (PFOA) concentration results from float tank water samples submitted by DuPont, indicating levels of 24.2 ppm and 24.6 ppm for samples 2A and 2B, respectively, and 5.5 ppm and 5.6 ppm for samples 3A and 3B, with a note on the disposal of samples
|
2002 |
AR226-2517
|
V3o5By43k6QLoGnpXwoR53L8 |
1 |
|
The document discusses initial findings from the analysis of acidic waste samples for A P F O (Ammonium Perfluorooctanoate) by DuPont, indicating that while no A P F O was found in the neutralized sample, a usable method for detection appears imminent following successful HPLC analysis.
|
2002 |
AR226-2519
|
wqvZYZ4Qzr5O3MMz3E5dj9XB4 |
1 |
|
The document presents the results of Ohio River water sampling for perfluorooctanoic acid (PFOA) near the DuPont Washington Works facility and the Letart Landfill, as part of a multi-media Consent Order with the West Virginia Department of Environmental Protection.
|
2002 |
AR226-2518
|
78oXgEoxNZaN5KjX7xyy0Qbo |
23 |
|
The document is a compilation of historical data on C-8 (PFOA) from DuPont's Washington Works main plant and associated landfills, detailing environmental settings, water quality, and site conceptual models as part of a corporate remediation effort.
|
2002 |
AR226-2507
|
y4ObO0Jy2byqo2xMVONkVvRr |
57 |
|
The document outlines the agenda and objectives of an EPA/COE update meeting regarding the RCRA program status and multi-media consent order activities at the Washington Works facility, focusing on groundwater modeling and the development of screening levels for C-8 compounds, including PFOA.
|
2002 |
AR226-2552
|
RjyMzLLD3oD0erv57ZEvzoe2v |
11 |
|
The document is a correspondence from DuPont Engineering to the West Virginia Division of Water Resources, providing the complete data package from the sampling of four wells operated by the Little Hocking Water Association, which was part of the GIST well survey conducted in December 2001.
|
2002 |
AR226-2575
|
aELQq7RqJb8M7RM9QKyOw9dN |
1 |
|
The document details a telephone conference on January 30, 2002, discussing the completion of a door-to-door survey and the status of sampling efforts for perfluorinated compounds, with 90% of sampling completed and additional public water supplies requesting testing.
|
2002 |
AR226-2576
|
bB8ZV8exoaDZeY0D0n7X5GqN1 |
3 |
|
The document is an email from Andrew discussing the need for information to verify the assumption that the alluvial aquifer underlying DuPont Washington Works in West Virginia and Little Hocking Water Association in Ohio extends under the Ohio River, which is critical for constructing a new groundwater model.
|
2002 |
AR226-2577
|
o0wR3zJ6NzjOL5D2BxJ9z0Ow |
1 |
|
The document discusses an inquiry from a West Virginia Department of Transportation employee regarding health and safety concerns for workers near a DuPont site during the construction of a highway bypass, with assurances that there are no health and safety issues related to their off-site work.
|
2002 |
AR226-2579
|
gDj10ZBxEpXJp2mgDe6QGwB4J |
1 |
|
The document is a compilation of historical laboratory data on ammonium perfluorooctanoate (C-8) from DuPont's Washington Works main plant and landfills, detailing environmental assessments and water quality analyses.
|
2002 |
AR226-2573
|
60QGZ2q8d52k1rMB7go425Od |
57 |
|
This memorandum details an experiment conducted to determine the airborne particle size distribution of Ammonium Perfluorooctanoate (APFO) generated by 3M, revealing a mean chamber concentration of 397.7 mg/m3 and a geometric standard deviation of 2.17, indicating a relatively homogeneous atmosphere.
|
2002 |
AR226-2805
|
MM7nJazv6BB17e9gJ5ZXzYrKx |
2 |
|
The document outlines a Quality Assurance Project Plan for a groundwater investigation at the Washington Works Plant, focusing on the assessment of perfluorinated compounds, including PFOA and PFOS, as part of a corporate remediation effort by DuPont and URS Diamond.
|
2002 |
AR226-2574
|
5k5drpNqGMBgErqNmjk8e1NL8 |
49 |
|
The document details a GIST meeting held on March 5, 2002, involving various environmental protection agencies and DuPont, discussing the involvement of the Ohio EPA in relation to PFOA contamination and public communication efforts in the Little Hocking area.
|
2002 |
AR226-2581
|
zQQmqjkag7bKBdLEvZykREdz3 |
6 |
|
The Ohio EPA recommends additional water sampling in the Ohio River to assess the extent of C-8 (PFOA) contamination from the Washington Works Facility and surrounding areas, including upstream and downstream locations for better comparison and understanding of its distribution.
|
2002 |
AR226-2582
|
oN1Og89bvvoYKV9MjEz27M83 |
2 |
|
DuPont is responding to comments from the West Virginia Division of Water Resources regarding the February 2002 Surface Water and Groundwater Monitoring Report for the Washington Works Facility and associated landfills, specifically addressing the request for additional groundwater monitoring wells and suggestions for data presentation.
|
2002 |
AR226-2584
|
0OXqeo3OdoqjNXOEzyo0pgoV |
3 |
|
discussed the completion of water sampling related to C-8 (PFOA) around the DuPont facility, noting that most sampling was finished with some high concentrations found in Ohio wells, and the GIST agreed to cease further sampling efforts at the current radius.
|
2002 |
AR226-2585
|
rBypQnNLVxgGxXOzwgBDNJZGe |
3 |
|
The West Virginia Department of Environmental Protection reviewed DuPont's reports on groundwater assessment and monitoring well installation plans related to the C-8 plume at the Washington Works Facility and local landfills, emphasizing the need for enhanced groundwater monitoring to address potential contamination.
|
2002 |
AR226-2587
|
YY6xNpBBbXZN8BQ10KxGaxLk |
5 |
|
This is a DuPont document summarizing a meeting with the ACOE and EPA on July 18, 2002, discussing geological and hydrological data related to the Ohio River and its alluvial aquifer.
|
2002 |
AR226-2589
|
VjX7aDX8vqEynxgoj5MxwXr6g |
27 |
|
DuPont is responding to comments from the Ohio EPA regarding the extension of a One-Mile Radius for surveying and sampling drinking water sources for PFOA in Ohio, agreeing to suggested changes and outlining the sampling protocols and areas to be surveyed.
|
2002 |
AR226-2590
|
O1x4Dp6nRm1x4OBvgkye9mwp |
2 |
|
The document is a letter from the West Virginia Department of Environmental Protection to DuPont, detailing increasing concentrations of PFOA (C8) in groundwater and surface water at the Washington Works Plant and Letart Landfill, as reported in a May 2002 monitoring report.
|
2002 |
AR226-2591
|
X8n3X7gODqV1xBBXVYKM4rXq4 |
4 |
|
The GIST meeting notes from August 12, 2002, detail discussions among various stakeholders, including representatives from DuPont and the EPA, regarding water sampling results for PFOA (C-8) in West Virginia and Ohio, noting elevated concentrations in groundwater at higher elevations and the collaboration on data sharing among agencies.
|
2002 |
AR226-2592
|
K637RJd0QMQN6k1wGnwJDeJRX |
2 |
|
The document discusses ongoing environmental remediation efforts related to PFOA (C-8) at DuPont's Washington Works facility, including groundwater sampling, landfill monitoring, and the detection of PFOA in downstream surface water samples.
|
2002 |
AR226-2593
|
GmQxGNevamN9RM7gLJBG9BoEV |
1 |
|
This document discusses concerns raised by George Dasher regarding increasing concentrations of C-8 (PFOA) in groundwater and surface water at a DuPont plant and the potential need for remediation systems, with preliminary considerations for a response being outlined by Katherine L. Davis.
|
2002 |
AR226-2594
|
g2pN59K1L659a4erJRKKKE6za |
1 |
|
The document is an email from Andrew S. Harden discussing a letter received from George Dasher of the West Virginia Department of Environmental Protection (WVDEP) regarding PFOA, indicating that a response is being prepared and a meeting is scheduled to discuss it.
|
2002 |
AR226-2595
|
aD4nn0B0vkLd5jnBEoge2nBrb |
1 |
|
The document reviews off-site water sampling results related to PFOA from DuPont's Washington Works, indicating that over 1,200 homes were surveyed with drinking water samples showing concentrations significantly below the 150 µg/L screening level, and it discusses groundwater modeling and investigations into elevated C-8 concentrations in the Little Hocking Water Association well field.
|
2002 |
AR226-2596
|
YrpGpKVBGweaRMdxLXvpk0Bwk |
34 |
|
The GIST meeting notes from August 12, 2002, detail discussions among representatives from the Division of Water Resources, Ohio EPA, and DuPont regarding water sampling results for perfluorinated compounds (C-8) in West Virginia, indicating consistent historical trends and no unexpected findings from new monitoring wells or groundwater modeling.
|
2002 |
AR226-2597
|
v6ybRxoYR5n8DV9wGkpbYODKq |
2 |
|
The document is a letter from DuPont's Safety Health & Environmental Manager, David M. Rurak, discussing the company's voluntary commitment to conduct a well survey and sampling for C8 contamination (PFOA) in groundwater within a one-mile radius of a well field, following a directive from the West Virginia Department of Environmental Protection.
|
2002 |
AR226-2603
|
rpxyknBMB0LrqQXvR7ro1OQGG |
1 |
|
The document is a letter from the Ohio Environmental Protection Agency to David Rurak of DuPont, discussing a meeting about perfluorooctanoate (PFOA) contamination at the Little Hocking Water Association and confirming DuPont's agreement to conduct a survey and sampling of private wells in Ohio.
|
2002 |
AR226-2604
|
MoMNQ1DqkrVxexeGqzRKdx3ba |
2 |
|
This letter from Kevin J. Hopper, environmental counsel for The Little Hocking Water Association, informs the Ohio EPA about potential contamination of their wells by ammonium perfluorooctanoate (C-8) from DuPont, referencing recent sampling results that indicate higher concentrations in production and test wells compared to the distribution system.
|
2002 |
AR226-2605
|
kamaEyRpnpk6ZO2z15x5djzBn |
3 |
|
The Ohio Environmental Protection Agency reviewed the April 2002 Proposed Sampling Investigation Plan for the Little Hocking Water Association Well Field, requesting DuPont to collect and analyze soil samples for C-8 (PFOA) to evaluate its presence in the vicinity of test well TW-4, where groundwater concentrations were measured at approximately 37 µg/l.
|
2002 |
AR226-2607
|
GK4DRE573wMNg6RMk8n8VKrgx |
6 |
|
The document is a response from the Ohio Environmental Protection Agency to DuPont regarding their revised Sampling Investigation Plan for assessing the extent of C-8 (PFOA) contamination in groundwater and soil at the Little Hocking Water Association Well Field, indicating agreement with the proposed sampling locations but recommending additional samples for a more thorough evaluation.
|
2002 |
AR226-2608
|
g7VnXymB1n2egxo05ydOZJ89 |
3 |
|
DuPont's correspondence outlines their proposed soil sampling plan for the Little Hocking Water Association well in Washington County, Ohio, in response to comments from the Ohio EPA regarding the need for additional samples to assess the vertical distribution of C-8 (PFOA) and its potential leaching into groundwater.
|
2002 |
AR226-2609
|
Ln6m0ZD8jKqVyJM5aDrZxXm5 |
4 |
|
The document reports a significant increase in acute respiratory illness cases linked to the use of recently reformulated aerosol textile and leather waterproofing sprays, attributed to the toxic effects of fluorocarbon polymers and solvents, leading to the withdrawal of these products from the market.
|
2002 |
AR226-3705
|
15G9wjJZQLe243ap0QGan1kJE |
1 |
|
The document summarizes DuPont's environmental fate studies on fluorotelomer intermediates, specifically the Telomer B 8-2 Alcohol, highlighting its low toxicity to aerobic microorganisms and significant discrepancies in water solubility and vapor pressure compared to environmental fate models.
|
2002 |
AR226-3341
|
a1KVbMwaxqma8YbGZvGrqamXN |
1 |
|
The document reports on a study conducted by DuPont to evaluate the influence of the substance H-25134 on the growth and growth rate of the green alga Selenastrum capricornutum, with algae exposed to various concentrations of H-25134 over a 72-hour period.
|
2002 |
AR226-3214
|
v14bJpavYNXBma5jaXyKvv0yZ |
11 |
|
The document details the analytical report for the dosing suspensions of H-24516, a substance used in a pilot developmental toxicity study in rats, focusing on concentration verification and stability analysis at various concentrations.
|
2002 |
AR226-3215
|
y022Z5rgB0d8d6VLav8MwxVX |
18 |
|
The document reports the results of an acute inhalation toxicity study on a mixture of perfluorinated compounds, including various ammonium salts, which revealed high mortality in rats exposed to concentrations of 120 mg/m3 and 57 mg/m3, while all rats at 23 mg/m3 survived, indicating significant toxicity at higher exposure levels.
|
2002 |
AR226-1057
|
gan57pwN1DpXvdJzX07X7noV |
1 |
|
The Fire Fighting Foam Coalition provided the EPA with information on the chemistry and quantity of fluorosurfactants, specifically noting that approximately 138,000 pounds of these substances were used in the production of aqueous film-forming foam (AFFF) agents sold in the U.S. in 1999, primarily focusing on telomer-based AFFF agents.
|
2002 |
AR226-1065
|
3ejGN47gK3g3oB7GN3wV92EB6 |
1 |
|
This is a letter from Thomas A. Cortina, Executive Director of the Fire Fighting Foam Coalition, addressing Mr. Auer regarding issues related to firefighting foam and its environmental implications.
|
2002 |
AR226-1075
|
evOmG2z1kzYaeob2yqEDd6p3M |
1 |
|
3M submitted a TSCA 8(e) substantial risk notice to the EPA regarding Ammonium Perfluorooctanoate (APFO), CAS#: 3825-26-1, highlighting statistically significant adverse effects observed in a reproduction study in rats, while noting that further analysis is needed to determine the causation of these effects.
|
2002 |
AR226-1081
|
LpxEE5Qd6a2xN2v15VazjG9ag |
1 |
|
The document is a submission from 3M to the EPA providing the final report of a two-generation reproduction study in rats on Ammonium Perfluorooctanoate (CAS# 3825-26-1) as part of TSCA 8(e) substantial risk notification.
|
2002 |
AR226-1091
|
kaBK8Byag98QEyNzGXqOq8Q3n |
1 |
|
3M submitted additional data to the EPA regarding perfluorooctane sulfonates, including a final report on a two-generation reproduction study of ammonium perfluorooctanoate in rats, which analyzes the effects of gestational age and body weight on reproductive outcomes.
|
2002 |
AR226-1095
|
np72DGvJbmvqEmyOKdMeBxpxG |
1 |
|
3M submitted a TSCA 8(e) substantial risk notice to the EPA regarding a rat study on triphenylbenzyl phosphonium cation/N-Methyl perfluorooctanesulfonamide salt, indicating significant toxicity at higher doses and identifying a No Observable Adverse Effect Level (NOAEL) at 5 mg/kg.
|
2002 |
AR226-1097
|
jyY4p2pp8g2DLYZwdxdGzM1OZ |
1 |
|
The document is a letter from the EPA's Office of Prevention, Pesticides and Toxic Substances announcing the availability of the Revised Draft Hazard Assessment of Perfluorooctanoic Acid (PFOA) and its salts, which updates previous assessments and incorporates new studies and comments received through October 2002.
|
2002 |
AR226-1135
|
zmjBYbGYEYX5LjvBe2jG6qyR |
1 |
|
The document is a communication from the EPA regarding the Revised Draft Hazard Assessment of Perfluorooctanoic Acid (PFOA) and its salts, which updates previous assessments by incorporating new studies, including a two-generation reproductive study in rats and a six-month monkey study.
|
2002 |
AR226-1130
|
wNVRY4mGNYDkg8Dw30L4mzG6 |
1 |
|
This is a letterhead cover page from an unspecified organization, with no analytical content retained in the OCR.
|
2002 |
AR226-1143
|
5kjgJoJV6B62xvyOrwmV8VMde |
1 |
|
The document summarizes a meeting on October 17, 2002, between EPA officials and DuPont representatives to discuss perfluorooctanoic acid (PFOA) and ammonium perfluorooctanoate (APFO), focusing on DuPont's product stewardship efforts and their plans to assess PFOA exposure related to fluoropolymer manufacturing and telomer breakdown.
|
2002 |
AR226-1139
|
peGYZGy7J71oyJBydgo7KERXw |
1 |
|
This is a letter from DuPont's Robert C. Buck transmitting two disks containing a sanitized and a confidential presentation to the U.S. EPA from a meeting held on November 25, 2002.
|
2002 |
AR226-1146
|
93Dvpb1KypOzEJ7vz35OyazOq |
1 |
|
This is a letter from the EPA's Office of Prevention, Pesticides and Toxic Substances, dated December 9, 2002, addressed to interested parties regarding unspecified content related to environmental protection.
|
2002 |
AR226-1144
|
44prQ9K4ZQ4dDwQvKRpdoKyrG |
1 |
|
The Environmental Working Group received a letter from the Little Hocking Water Association expressing concerns about C-8 (PFOA) contamination in their drinking water supply, with levels detected as high as 78.0 ppb, significantly exceeding those found in West Virginia's water supplies.
|
2002 |
AR226-1158
|
MM2gmxd72m5464ErNB1MGgR1x |
1 |
|
This document is a letter from Robert A. Bilott to Mary Dominiak at the EPA, submitting various documents for inclusion in Administrative Record 226 related to PFOA (ammonium perfluorooctanoate), including letters and submissions to the IRIS database.
|
2002 |
AR226-1159
|
6vXvdNDmr604jx2KOQdO93k1 |
1 |
|
The document is a response from the EPA to Robert A. Bilott regarding his request for informal discussions about the C-8 Assessment of Toxicity Team meeting related to PFOA, indicating that the EPA cannot participate due to limited resources and suggesting a formal request process instead.
|
2002 |
AR226-1186
|
VGjzkoYr0mXgLm4466JKOj2bw |
1 |
|
The document reports on the physical-chemical properties of 8-2 Telomer B alcohol, including its ultraviolet spectrum, vapor pressure, and water solubility, with findings indicating low solubility and specific vapor pressure ranges.
|
2002 |
AR226-1347
|
b5xjEkjL5eDJ3ynpB1ky56M1g |
1 |
|
The document presents blood data from 2001 for DuPont employees, including levels of perfluorinated compounds, with specific results for Granular Polykettle Operators and Fine Powder/Dispersion Autoclave Operators, while maintaining employee confidentiality.
|
2002 |
AR226-1638
|
aBMx5NZN3R9OmXL77JNg0BYv9 |
1 |
|
The document discusses changes in the environmental hazard narrative for PFOA, noting a reduction in the Margin of Exposure (MOE) from 300 to 1000, which results in a new drinking water guideline of 10 ug/L, lower than the previously communicated 14 ug/L, prompting the need for clarification to the EPA regarding this discrepancy.
|
2002 |
AR226-1690
|
2qvKk23KKe602yVvQRe7xaOea |
1 |
|
The document discusses the sharing of a draft monograph related to PFOA by DuPont with regulatory agencies, highlighting the company's conservative approach in setting its CEG and addressing concerns about potential FOIA requests.
|
2002 |
AR226-1691
|
vp1ReVp0QBaQV4KQGx14jJXE |
1 |
|
The document describes the ongoing RCRA interim remedial measures program at the 3M Decatur site, focusing on the construction of a containment structure for an inactive landfill to mitigate groundwater contamination, with key components including a subsurface sheet-piling barrier and an upgrade to a multilayer cap to prevent precipitation infiltration.
|
2002 |
AR226-1700
|
1QnQpwmpOJ8MobDGn9EdBmnkm |
1 |
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The document outlines ongoing research protocols by 3M and Johns Hopkins University to identify and analyze levels of various fluorochemicals, including PFOS and PFOA, in the sera of children in the United States, with final reports due in 2001 and 2004.
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2001 |
AR226-0019
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7R1892VG9X55Gr3JrRJvM1m46 |
4 |
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This document outlines a study by 3M to determine the concentration ratios of perfluorooctanesulfonate (PFOS) in human liver, bile, and serum, with the aim of understanding tissue concentrations and their significance, following ethical guidelines for tissue procurement.
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2001 |
AR226-0021
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yGXqnpjkaQ6ZwVmM392mDGB3 |
3 |
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The document is a laboratory report by 3M Environmental Laboratory on the hydrolysis reactions of Perfluorooctane Sulfonate (PFOS), indicating that the study does not fully comply with US EPA Good Laboratory Practices Standards.
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2001 |
AR226-1030
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zQxx8zy6b9O580dEqpzV921r7 |
72 |
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The document is a report on a 35-day aerobic biodegradation study of PFOS conducted by Pace Analytical Services, directed by Cleston C. Lange, Ph.D., for 3M.
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2001 |
AR226-1030
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b5qy1e4M6m5LgknJ2VzXrEG11 |
30 |
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This laboratory report from 3M Environmental Technology & Safety Services details a PFOS dietary LC50 study in northern bobwhite birds, revealing significant variability in PFOS levels in sera among individual animals while liver PFOS levels were more consistent and generally increased with dose level.
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2001 |
AR226-1030
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om0wLky7xgLQVvm2mg882qNer |
16 |
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The document details an acute oral toxicity study of perfluorooctanesulfonate (PFOS) on honey bees (Apis mellifera) conducted according to OECD Guideline 213, with a test substance purity of 86.9% and specific test conditions outlined.
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2001 |
AR226-1030
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D9B6qQeK5EJRnRbz2kvo5Q1o |
43 |
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3M submitted a TSCA 8(e) notice to the EPA detailing acute toxicity studies on perfluorooctane sulfonate (PFOS) conducted on honey bees, revealing a contact LD50 of 59.7 mg/Kg (moderately toxic) and an oral LD50 of 5 mg/Kg (highly toxic).
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2001 |
AR226-1030
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baYaRk2wB0j678V603nj83Goy |
1 |
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This document details a study on the acute contact toxicity of perfluorooctanesulfonate (PFOS) produced by 3M, using honey bees (Apis mellifera) as the test species, with a purity of 86.9% confirmed through various analytical techniques.
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2001 |
AR226-1030
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NN8exgOzERwob5veRaa3rbXQE |
32 |
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The document is a laboratory report from 3M detailing the hydrolysis reactions of N-Methylperfluoroctanesulfonamido-Ethyl Alcohol (N-MeFOSE Alcohol), indicating non-compliance with certain EPA Good Laboratory Practices while noting that many GLP standards were followed in the analytical method development.
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2001 |
AR226-1030
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kDxzOQ7RgB4z3dJqEk4vrkxxJ |
72 |
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The document is a 3M Environmental Laboratory report (No. W1872) on the hydrolysis reactions of 2-(N-ethylperfluoroctanesulfonamido)-Ethyl Alcohol (N-EtFOSE Alcohol), indicating non-compliance with EPA Good Laboratory Practices while noting that many GLP standards were utilized in the analytical method development.
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2001 |
AR226-1030
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vBNQ7348zpb5Y9Vye9darqdr8 |
85 |
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This document is a laboratory report (No. EL1132) from 3M Environmental Laboratory detailing the hydrolysis reactions of perfluorooctanesulfonamide (FOSA), noting non-compliance with certain US EPA Good Laboratory Practices standards while indicating that many GLP standards were still utilized in the study.
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2001 |
AR226-1030
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NG4LxG6kd1j8L2paR9LDqozyy |
126 |
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The document is an archived final report from an environmental laboratory detailing the results of toxicity tests on a product containing PFOA, indicating high levels of toxicity with various BOD and COD measurements exceeding 1000 mg/L.
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2001 |
AR226-1030
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n8MvVyQ7Lb2YYY4NZjYkXqj6 |
10 |
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The document is an archived final report from an environmental laboratory detailing the results of a toxicity analysis on a sample (L-6778) for the requestor, the EAR Department, including various biochemical oxygen demand (BOD) and chemical oxygen demand (COD) measurements, with results indicating high levels of toxicity.
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2001 |
AR226-1030
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3QMnkKkXaBr2oMv6aZ36Rq2aa |
9 |
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This document is a laboratory report (No. E00-1851) from 3M Environmental Laboratory detailing a study on the hydrolysis reactions of perfluorooctanoic acid (PFOA), which notes non-compliance with certain US EPA Good Laboratory Practices (GLP) standards.
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2001 |
AR226-1030
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gapX2z300xM3gVRoLjN4ZEBBL |
99 |
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The document is a 3M Environmental Laboratory report on the indirect photolysis of gaseous perfluorooctanesulfonyl fluoride (POSF) using Fourier Transform Infrared (FTIR) spectroscopy, which states that the study does not comply with US EPA Good Laboratory Practices (GLP) standards.
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2001 |
AR226-1030
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7OZZ1ZO3oKpQa3yrLzr5aXmGo |
38 |
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The document discusses the thermal stability and degradation pathways of perfluorooctane sulfonate (PFOS) during combustion processes, indicating that PFOS has low thermal stability due to weak carbon-sulfur bonds, and suggests that incineration is unlikely to significantly contribute to PFOS generation and distribution.
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2001 |
AR226-1030
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gaKdXQm0nz3nGmJNE8X3z0q83 |
1 |
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This is a document titled "Fluorochemical Decomposition Processes" authored by David A. Dixon from the Pacific Northwest National Laboratory, but the content is largely unreadable due to OCR errors.
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2001 |
AR226-1030
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vVwLJpBDMp1QmdMYQ3goM3bwm |
6 |
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This letter report from Focus Environmental, Inc. to 3M Corporation discusses the thermal stability of perfluorinated alkyl sulfonyl compounds, highlighting their higher thermal stability compared to chlorinated organics and hydrocarbons, and referencing a Battelle report on the thermal decomposition of fluorochemicals.
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2001 |
AR226-1030
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M4VKkmp3gY77b6pkNpZmg726M |
8 |
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The document is an executive summary of a Multi-City study conducted by 3M Environmental Laboratory, analyzing the presence of perfluorooctane sulfonate (PFOS), perfluorooctanoate (PFOA), and perfluorooctane sulfonamide (FOSA) in various environmental samples from cities with and without fluorochemical manufacturing to assess potential human and
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2001 |
AR226-1030
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X7dxkO0Qverxv7og5g1VoQ1wJ |
12 |
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The document outlines the Standard Operating Procedure (SOP) for collecting air samples of semi-volatile organic compounds, including perfluorinated compounds, using a high volume polyurethane foam sampling method as part of the Multi-Cities Project, prepared by Battelle Memorial Institute.
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2001 |
AR226-1030
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rK71M2Be16w2B7vo3w5Jo11V |
42 |