|
The document reports on an oral LD50 toxicity test for pentadecafluorooctanoic acid ammonium salt conducted at Haskell Laboratory, revealing an LD50 value of 457 mg/kg for female mice and 57 mg/kg for male mice, with observed clinical signs of toxicity including weakness, weight loss, and tremors.
|
— |
AR226-2765
|
NezddLdBkdk9vOmbk35a2BkgR |
3 |
|
The document reports on a subacute inhalation toxicity study of pentadecafluorooctanoic acid ammonium salt (C-8) conducted by Haskell Laboratory, which found that exposure to this compound caused liver degeneration and elevated liver enzymes in rats at various concentrations.
|
— |
AR226-2762
|
VKO89BVLMyqq910wBKe20q8M8 |
45 |
|
This document appears to be a series of responses to inquiries regarding analytical results and methodologies related to environmental sampling at the Riverbank Landfill and Anaerobic Digestion Ponds, referencing various sections of a VI Report and discussing the exclusion of certain compounds from analysis.
|
— |
AR226-2538
|
ymkBVMykN6zNv14Dkj8g97kOX |
67 |
|
The document reports on an oral toxicity comparison test conducted by E. I. du Pont de Nemours and Company on three perfluorinated compounds (H-14,094, H-14,121, and H-12,037) in rats, revealing significant mortality and clinical signs of toxicity such as weight loss and perineal staining at various doses.
|
— |
AR226-2766
|
ganxZxJq6zb7JK57K6zJjxJkq |
4 |
|
The document reports on a study conducted by DuPont's Haskell Laboratory to determine the oral LD50 value of pentadecafluoro-octanoic acid ammonium salt in rats, revealing a calculated LD50 of 478 mg/kg with observed clinical signs including weight loss and staining.
|
— |
AR226-2767
|
yr2Mz0nOkgaqboBGp675mG9pd |
4 |
|
The document reports on a study conducted by E. I. du Pont de Nemours and Company at Haskell Laboratory, which evaluated the effects of pentadecafluoro-octanoic acid ammonium salt on liver weights in castrated and ovariectomized rats, revealing an LD50 of 439 mg/kg for the compound.
|
— |
AR226-2768
|
BrkmXM4rgxd0MM4RoJMOQpyL |
4 |
|
The document reports on the evaluation of five types of gloves for their permeation resistance to C8 (Ammonium Perfluorooctanoate) conducted by Haskell Laboratory, indicating that three glove samples showed measurable breakthrough times and permeation rates after 8 hours, but overall resistance to C8 was considered low.
|
— |
AR226-2769
|
3Q0oV61NO5X6DwGg55qop7Goy |
3 |
|
The document reports on a 14-day mouse feeding study conducted by E. I. du Pont de Nemours and Co. at Haskell Laboratory, evaluating the effects of octanoic acid, pentadecafluoro-, ammonium salt (C-8) on male and female albino mice, with findings indicating varying body and liver weights at different concentrations.
|
— |
AR226-2770
|
oenOZEJJjJN0KbL24GyLKz43o |
5 |
|
The document reports on a study conducted by Haskell Laboratory examining the toxic effects of ammonium perfluorooctanoate (C-8) on rats, indicating that a dose of 1000 mg/kg significantly reduced mortality compared to lower doses.
|
— |
AR226-2772
|
G67DX1Kn45nyLBOrOyKa58Nex |
3 |
|
The document reports on a study conducted by E. I. du Pont de Nemours & Co. to evaluate the health implications of ammonium perfluorooctanoate (C-8) in female rats, finding rapid uptake and clearance of C-8 from blood after administration, with significant differences noted between male and female rats in clearance rates.
|
— |
AR226-2771
|
jmD72k9OmLeKBVO8B22V2dX4O |
45 |
|
This document reports on a subacute inhalation toxicity study of PFOA conducted by DuPont, revealing that while clinical observations and weight gain were normal in rats exposed to various concentrations, significant changes were noted in platelet counts and urinary fluoride excretion at the highest concentration of 50,000 ppm, with no compound-related changes observed post-exposure.
|
— |
AR226-2774
|
6Rz3LMj23QRnJKpRLGg05wLVR |
22 |
|
The document is a revised report from DuPont's Haskell Laboratory detailing a subacute study on the dermal absorption and toxic effects of ammonium pentadecafluoro-octanoate (a perfluorinated compound) applied to the skin of rats, with a focus on correlating observed effects with blood organofluorine concentrations.
|
— |
AR226-2777
|
G6GxGxLmRxV6wjm6re9gx33Rr |
26 |
|
The document reports on a skin irritation study conducted by E. I. du Pont de Nemours and Co., Inc. using octanoic acid, pentadecafluoro-, ammonium salt, which found no skin irritation in rabbits after exposure to impregnated fabric strips.
|
— |
AR226-2778
|
VyeVmxdVBvqGzn5L8pyQzO0q |
3 |
|
The Haskell Laboratory report details a 14-day feeding study on male and female mice, revealing that both C-8 (octanoic acid, perfluorinated ammonium salt) and ammonium omega-hydrohexadecafluorononanoate caused significant mortality and liver weight increases at high doses, with clinical signs including weight loss and weakness.
|
— |
AR226-2779
|
VJgoRxqQd62V0kk9QV7JRyZjq |
5 |
|
DuPont Washington Works responds to EPA's Notice of Deficiency regarding their RFI Work Plan by agreeing to conduct additional investigations related to groundwater monitoring and modeling, influenced by the site's production well activities, to address EPA's comments.
|
— |
AR226-2545
|
DjqmQOK2Zgzb8Q4L4N1vkL25 |
8 |
|
Environment Canada and Health Canada have proposed an Action Plan to assess and manage Perfluorinated Carboxylic Acids (PFCAs) and their precursors, highlighting concerns about their bioaccumulation, persistence, and adverse effects on wildlife and laboratory animals.
|
— |
AR226-3597
|
p2QVDyYB9LDr5z8J1JG00JZEd |
9 |
|
The document is a report from Haskell Laboratory detailing an inhalation study on embryo-fetal toxicity and teratogenicity in rats, conducted by E. I. Du Pont de Nemours & Co., which was completed in July 1981.
|
— |
AR226-2776
|
3evgvRpEQ4Z232nQkGE29Qvb3 |
83 |
|
The document is a Haskell Laboratory report detailing a 21-day mouse feeding study on octanoic acid, pentadecafluoro-, ammonium salt, which showed significant liver weight increases at a dosage of 30 ppm, with no notable changes at 1 ppm or lower.
|
— |
AR226-2781
|
MGx9ze2MJ43EJ2noL12kO61oy |
3 |
|
The document reports on a study conducted by Haskell Laboratory that investigated the placental transfer of radioactive ^C-labelled perfluorooctanoate (C-8) in pregnant rats, finding that the compound transferred from maternal blood to fetuses with minimal impediment, peaking in maternal and fetal tissues within hours of administration.
|
— |
AR226-2780
|
bBq6Bp0rneLqKng8RVwjYdZeZ |
7 |
|
The document is a report from Haskell Laboratory detailing a fourteen-day feeding study on male and female mice to determine the effects of ammonium perfluorooctanoate (PFOA) at various dosage levels.
|
— |
AR226-2783
|
O3xMoDJbX6Qeqryk9mMp0w52e |
4 |
|
The document reports on a study conducted by E. I. du Pont de Nemours and Co., Inc. at Haskell Laboratory, which observed significant sex and species differences in the excretion and disposition of carbonyl C-labelled ammonium perfluorooctanoate (C-8) in rats, mice, hamsters, and rabbits, highlighting that female rats and male hamsters excret
|
— |
AR226-2784
|
N2O7aL6XEbkJrnVJK331BrNyg |
8 |
|
The document reports on a study conducted by Haskell Laboratory assessing the acute oral toxicity of ammonium pentadecafluoro-octanoate (C-8) in rats of varying ages, finding that the LD50 for newborn rats is 243 mg/kg.
|
— |
AR226-2785
|
2B700MbMGvwm2b0BQR24ZM4r |
5 |
|
This document reports on a study conducted by DuPont's Haskell Laboratory examining the effects of oral administration of perfluorooctanoate (C8) on liver weights in rats and mice, noting significant changes in liver weights among the treated animals.
|
— |
AR226-2786
|
p2a1pyDE8d6njRQyYvm5YnE5j |
4 |
|
The document reports on a subchronic inhalation toxicity study of PFOA conducted by E. I. du Pont de Nemours and Co., Inc., which found that exposure to 1.4 and 3.0 mg/L resulted in increased serum cholesterol and liver weights in male rats, but no compound-related changes were observed after a recovery period.
|
— |
AR226-2787
|
jBMj8ddaQBdG73kjMpaykYONy |
13 |
|
The document reports on a study conducted by E. I. du Pont de Nemours and Co., Inc. at Haskell Laboratory, which investigated the acute oral toxicity of ammonium perfluorooctanoate (C-8) in rats, finding that all rats died within 8 days after receiving a dose of 670 mg/kg, with significant increases in liver weight/body weight ratios compared
|
— |
AR226-2789
|
Qk1J7EKR0oKgyw2MejDNBMb37 |
4 |
|
The document is a preliminary study report by Haskell Laboratory for DuPont on the maternal and developmental toxicity of C-8 alternates in rats, detailing the methodology, results, and observations related to the effects of these substances on maternal health and fetal development.
|
— |
AR226-2788
|
NEG2wL46MDKy6znNmZzwg7jXR |
73 |
|
The document is a revised report of a subchronic toxicity study conducted by DuPont on rats, evaluating the effects of a 90-day gavage exposure to a substance, likely PFOA or PFOS, with a focus on body and organ weights, including thyroid gland measurements.
|
— |
AR226-3238
|
LKkz5Krnvw8YGjZ2oj369GzQX |
228 |
|
The document reports on a subchronic toxicity study conducted by E.I. du Pont de Nemours and Company, evaluating the effects of a substance (likely PFOA or PFOS) on male rats over a 90-day period, highlighting findings of liver lesions including necrosis and inflammation.
|
— |
AR226-3235
|
RpyKeqQ6r61GYejxJ5J8E7r8E |
392 |
|
The document reports on a subchronic feeding study of ammonium perfluorononanoate (C-9) in mice, revealing that dietary concentrations of 300 ppm or higher caused death, while concentrations of 100 ppm or higher resulted in weight loss and increased liver weights compared to controls.
|
— |
AR226-2793
|
1g6KOX0QLB8Y3M9V4okZ8mxjm |
16 |
|
The document is a Haskell Laboratory report evaluating the acute skin irritation potential of a substance produced by E. I. du Pont de Nemours and Company, which showed slight irritation in 2 of 6 rabbits at 24 hours but resolved by 48 hours.
|
— |
AR226-2795
|
wDMwYpZkNyEMM2r5Mw6kbBEK3 |
9 |
|
This document appears to be a cover page related to a request for information under the Clean Air Act and other environmental regulations, with references to specific attachments and instructions for responding to the request.
|
— |
AR226-2559
|
rxVrGMdByzwdQqjj1bbanxmXG |
7 |
|
The document summarizes the environmental assessment of PFOA levels associated with landfills, detailing monitoring results from multiple sites, with on-site PFOA concentrations ranging from 0.058 to 30,500 ppb and off-site samples showing a mean concentration of up to 1.46 ppb.
|
— |
AR226-2565
|
nkN21d1Kg1Z0axoX9eDrRdjxa |
13 |
|
This document summarizes the final surface water sampling results for perfluorinated compounds in the Ohio River, indicating non-detect levels for most transects and low concentrations (up to 0.128 ug/L) near Letart Landfill, with a final report expected by the end of September.
|
— |
AR226-2569
|
vVRVYpL4X86dLY0ZkwzVX90kZ |
1 |
|
The document discusses concerns regarding the decision to contract Battelle for sampling services related to PFOA under a Consent Order, highlighting the potential delays and challenges compared to using internal DuPont resources for critical sampling.
|
— |
AR226-2570
|
B8wEYJ6Zg1BE8vB1ggJjJVaem |
2 |
|
This document contains work and medical histories for employees, including sample dates and C8 concentration levels, spanning various job codes and roles from 1959 to 2004.
|
— |
AR226-3477
|
mByj3KYZk0D2kYKjVew96E7o0 |
898 |
|
The document details a subchronic toxicity study conducted by DuPont on rats, evaluating the effects of a perfluorinated compound over a 90-day period, including one-generation reproduction assessments and clinical observations.
|
— |
AR226-3236
|
gadk0N4eaZdOVGGgEEbNgeMrq |
375 |
|
The document outlines a proposal for river water sampling near the DuPont Washington Works Facility and Letart Landfill to assess the environmental impact of ammonium perfluorooctanoate (PFOA) releases, as mandated by a Consent Order with West Virginia environmental authorities.
|
— |
AR226-2578
|
xdvykZMYN4Y2wqox52R8yzO9Q |
8 |
|
The document outlines a groundwater assessment work plan for the identification of the C-8 plume, associated with PFOA contamination, at the DuPont Washington Works facility and nearby landfills, detailing key findings and recommended activities to address data gaps.
|
— |
AR226-2583
|
qmJbRpMMjVD3pay60E8XvB9Yj |
28 |
|
Unreadable document.
|
— |
AR226-2586
|
ZJKM1kEaVj61JbewX8rD7y8wd |
1 |
|
The document discusses a response to the EPA regarding the use of the rotosonic drilling method for soil sampling at the LHWA site, emphasizing that heat generation during the process is not a significant concern for the concentration of PFOA (C-8) in the samples.
|
— |
AR226-2588
|
50OGkEKd4omKMbbY72dJmy525 |
1 |
|
This is a letterhead cover page from an unspecified laboratory, with no analytical content retained in the OCR.
|
— |
AR226-2600
|
wgNoax9nYLEeL46wpyVGyKp3B |
2 |
|
The document outlines a proposed Memorandum of Understanding between the West Virginia Department of Environmental Protection, Ohio EPA, and DuPont regarding continued monitoring of C8 (PFOA) concentrations in groundwater and surface water, following recommendations from the GIST report.
|
— |
AR226-2601
|
jNyeDKmaOvp1Y8xmDVebmx6rR |
39 |
|
This is an email correspondence between Laurence Libelo and Andrew Hartten discussing the information needed for evaluating air emissions versus groundwater concentrations, including requests for maps and data formats.
|
— |
AR226-2602
|
4Jgw4LKBzGXgVDV7ga0Nq5OYe |
3 |
|
The document outlines a proposed workplan for a limited field investigation at the Little Hocking Water Association wellfield, aimed at assessing groundwater contamination related to PFOA/PFOS, pending approval from the EPA.
|
— |
AR226-2606
|
4v2m9MQKLeaYXGvggB1YOLrjQ |
1 |
|
The document outlines the dispersion modeling protocol for assessing ambient air concentrations of C8 emissions, specifically from the DuPont Chambers Works facility in Deepwater, New Jersey, detailing the necessary emissions inventory and the use of the ISCST3 model for air quality modeling.
|
— |
AR226-2613
|
xjExGLmm9yRQ56KXVQY6yXqL0 |
5 |
|
This draft report details the dispersion modeling methodology and results for APFO emissions from the Telomers area at the Washington Works site, utilizing EPA's ISC3 model to evaluate emission rates and potential downwash effects from surrounding buildings.
|
— |
AR226-2615
|
0gVyevbk6XXrROpEg3VD4vzBm |
6 |
|
The document is a draft screening level modeling report that utilizes the U.S. EPA's Screen3 model to predict ambient ground level concentrations of C8 emissions, specifically from a common stack at the Washington Works site, with an emission rate of 0.16 lb/yr based on maximum production rates.
|
— |
AR226-2616
|
wKyrzzwwnoQvjK3ErJ1JJJoK6 |
5 |
|
This document is a final report validating the use of liquid chromatography tandem mass spectrometry (LC/MS/MS) for analyzing perfluorooctanoic acid (PFOA) in groundwater and surface waters from the Chambers Works wastewater treatment facility.
|
— |
AR226-2617
|
0qxeBknY2KpEV9jeDLQZMyr1J |
17 |
|
The document reports on a study conducted by E.I. du Pont de Nemours and Company to determine the inhalation approximate lethal concentration (ALC) of a substance coded H-24678 in rats, indicating that the test substance was stable under study conditions.
|
— |
AR226-3239
|
em3ooLGwg4mNxkDwYaJ8a055y |
15 |
|
The document is a report on a dermal sensitization test using the Buehler method conducted by DuPont on a substance identified as DuPont-9303, with the study completed on April 5, 2002.
|
— |
AR226-3240
|
NNkpwvr7oBE5X4NowmzOJoYR8 |
26 |
|
The document reports on a mixing and stability study for H-24691, a perfluorinated compound, in preparation for a repeated-dose oral toxicity study in rats, detailing the concentrations tested and the methods used for verification and stability analysis.
|
— |
AR226-3241
|
gzg3906bqOLzbpXYvxwobE89 |
13 |
|
The document reports on the Corrositex In Vitro Test (Study H-25240) conducted by DuPont to evaluate the skin corrosion potential of a test substance, using a standardized assay to measure the time for the substance to penetrate a biobarrier membrane.
|
— |
AR226-3242
|
yr4MzdoNXpgY0LR9G6d41nGzr |
10 |
|
The document discusses the environmental fate of fluorotelomer-based substances, specifically focusing on the conversion of fluorotelomer alcohols (FTOHs) to perfluoroalkyl carboxylic acids (PFCAs), their persistence and bioaccumulation, and the toxicological implications of PFCAs, as investigated by Derek Muir from Environment Canada.
|
— |
AR226-3606
|
3Njap89d54keBdLZqGpXLKnvx |
41 |
|
This is an advance unedited draft outline for a risk profile regarding a proposed chemical substance, detailing sections on chemical identity, data sources, environmental fate, exposure, and hazard assessment, with a focus on synthesizing information to determine the need for global action.
|
— |
AR226-3611
|
71LE9ZEDgyem1ORxvGDEno968 |
2 |
|
The document outlines the decision by the Persistent Organic Pollutants Review Committee to advance the proposal by Sweden to list perfluorooctane sulfonate (PFOS) and its precursors in Annex A of the Stockholm Convention, confirming that the screening criteria have been met and establishing an ad hoc working group to further review the proposal and prepare a draft risk profile.
|
— |
AR226-3614
|
oeOowr0kExXBMg3zk1pNO6bMo |
3 |
|
This document is a final report analyzing perfluorooctanoic acid (PFOA) in wastewater samples from the Chambers Works wastewater treatment facility, detailing the results of the analyses conducted using liquid chromatography tandem mass spectrometry (LC/MS/MS).
|
— |
AR226-2618
|
ByqNO1N02p1qdnRVrdYr10rLL |
12 |
|
The document is an environmental assessment report from DuPont regarding PFOA levels in air and water at their Telomer manufacturing sites, specifically focusing on data analysis, air dispersion modeling, and groundwater sampling.
|
— |
AR226-2614
|
LKEZOpomexyaL1840mDQOo195 |
80 |
|
This document is a final report evaluating carbon adsorption isotherms for perfluorooctanoic acid (PFOA) in samples from the Chambers Works wastewater treatment facility, indicating that the activated carbon used effectively adsorbs PFOA.
|
— |
AR226-2619
|
Vj5BVQVo69oL4q6q0E2Va94qg |
24 |
|
The document provides supplemental data on PFOS levels from groundwater and river water sampling near DuPont's Chambers Works facility, indicating that PFOS was detected at low levels in specific monitoring wells, while no PFOS was found in interior wells and there is no history of PFOS manufacturing at the site.
|
— |
AR226-2620
|
LJ8RaGdvxpZLZyqJvDqwwjJj7 |
13 |
|
This document details the use of the ISC3 model to calculate ambient air concentrations of C8 emissions from the Chambers Works site, including modeling methodology and emission source information.
|
— |
AR226-2622
|
nkpv55qdp1B3yqVx9np6Drko8 |
12 |
|
This document appears to be a sampling report detailing various surface water samples collected on multiple dates in June 2003, including analyses for PFOS and other analytes.
|
— |
AR226-2621
|
qaYJK8VbVy9jaJeNgkQ02KzYk |
20 |
|
The document outlines the dispersion modeling of APFO emissions from a stack at the Circleville site using the U.S. EPA's Screen3 model, detailing the emission parameters and the methodology for determining the impact of building downwash on dispersion.
|
— |
AR226-2623
|
pBJkgMmVae3kGnrbX8E5pwDoD |
4 |
|
In July 2004, groundwater and effluent samples were collected at the DuPont Circleville Plant in Ohio to establish baseline concentrations of perfluorooctanoate ion (PFOA) from two recovery wells, three production wells, and two outfalls.
|
— |
AR226-2624
|
ZnyK0rv5xox451ObzzZ4Vba2O |
5 |
|
On August 30, 2004, groundwater samples from the Earnhart Hills Public Water System in Circleville, Ohio, were tested for perfluorooctanoic acid (PFOA), and all results were non-detectable at concentrations below 0.01 µg/L.
|
— |
AR226-2625
|
DDY06EyzNgeGvG7j472xm0Gp5 |
10 |
|
The document outlines a subchronic toxicity study conducted by DuPont on the test substance H-24678 (likely a perfluorinated compound) in rats over a 90-day oral gavage period, detailing the study design, dosages, and critical dates for administration and sacrifice of the test subjects.
|
— |
AR226-3245
|
1geaqv6gBXR86gJ6k6J1vYpba |
318 |
|
This document reports on a 13-week inhalation toxicity study of Perfluorooctanesulfonyl fluoride (POSF) in CD rats, conducted by HAHPEWCENaluuocm2nnGoo8ttbnliiLlnnrb4eAigguHydddNrgSRyooeD, with a subsequent 4-week recovery period.
|
— |
AR226-3573
|
2jo5Qm9wMJQE1yprLjvgNMw7r |
754 |
|
This document contains analytical results for various water samples collected in July and August 2004, specifically measuring the presence of FC-143, with results reported in ng/L.
|
— |
AR226-2626
|
2GV643KLq3OxVJaadjopV51R |
5 |
|
The document reports groundwater and surface water sampling results for perfluorinated compounds (C8) near the Mer9ede River, indicating varying concentrations and suggesting the need for an action plan to reduce emissions from DuPont.
|
— |
AR226-2627
|
Rw4Lgn42mLjx21zvYZvZ6Q1X |
5 |
|
The document presents chemical analysis data of PFOA concentrations in groundwater from DuPont monitoring wells over the period from 1993 to 1996, indicating varying levels of contamination.
|
— |
AR226-2628
|
qaKOno4b45p6Yb6Y38xd5NzRM |
2 |
|
The document details the modeling methodology and results for ambient air concentrations of PFOA emissions from a DuPont facility in Dordrecht, indicating a maximum concentration of 0.057 µg/m³, which is significantly below the regulatory goal of 1.0 µg/m³.
|
— |
AR226-2630
|
253y6qZGw6a191bzr20Zg2M5 |
5 |
|
The document summarizes groundwater sampling results from the Dordrecht Works in March 2003, revealing varying concentrations of PFOA in multiple monitoring wells, with the highest recorded level at 7,430 µg/L.
|
— |
AR226-2629
|
NEp25NNY1rgNB5VvRRa9QYE2y |
14 |
|
The document details the modeling methodology and results for PFOA emissions from a DuPont site in the Netherlands, using the ISCST3 model to estimate ambient air concentrations based on specific stack parameters and emission rates.
|
— |
AR226-2631
|
bZr0JBXOjLXk7x3OqB9Gq7QZ |
6 |
|
The document details groundwater sampling results from March 2003, indicating high concentrations of perfluorinated compound FC-143, with values reaching up to 7,430,000 ng/L in various samples.
|
— |
AR226-2632
|
JJDr4582x5jkaweD3BMoL2rnB |
5 |
|
The document details the January 2003 baseline sampling of groundwater and wastewater at the DuPont Fayetteville Works in North Carolina to establish initial conditions for the production of APFO (C-8), including the methodology for sampling and monitoring well conditions.
|
— |
AR226-2634
|
6BQ1gGdaLj8Y5qbRbvyNDM4Y3 |
6 |
|
The document details an air quality dispersion modeling analysis of ammonium perfluorooctanoate (C8) emissions from the DuPont Fayetteville facility, conducted in accordance with U.S. EPA guidelines, utilizing five years of meteorological data to assess the impact of emissions.
|
— |
AR226-2635
|
JNqO31x4zxNEbLqDQy3gzvkma |
7 |
|
The document details the March 2003 groundwater and wastewater sampling conducted at the DuPont Fayetteville Works to establish baseline conditions during the initial activation of APFO (C-8) production, including the collection of samples from four monitoring wells and Outfall-002.
|
— |
AR226-2636
|
wznZRXO0LXLGLK0rRQ0xxgjD |
5 |
|
This document appears to be a sampling report for Project Fay, detailing various groundwater and surface water samples collected between January and July 2004, including specific sample identifiers and types.
|
— |
AR226-2638
|
wDk2re7weyr0OLEpM52eMjjw6 |
5 |
|
The document discusses water sampling data related to the production of Forfac telomer at DuPont, revealing that samples taken during plant production contained PFOA at levels ranging from 1 to 9 ppb, while bench scale simulations showed levels up to 449 ppb.
|
— |
AR226-2639
|
j8Kmb45V6dXjjrLxn77rG58O |
5 |
|
The document presents groundwater sampling results from Shimizu Works conducted between August 5-7, 2002, detailing the analytical findings of various volatile organic compounds (VOCs) and metals, with specific concentrations noted for several contaminants, including significant levels of tetrachloroethylene.
|
— |
AR226-2640
|
wqr1BpVpD3koGpB9nJ1KkV9yD |
5 |
|
The document outlines the modeling methodology and results for ambient air concentrations of pollutants, specifically focusing on emissions from DuPont's Shimizu site, using the Industrial Source Complex Short Term 3 (ISCST3) model to assess PFOA emissions based on various operational parameters.
|
— |
AR226-2641
|
ExEG2V5xpnNOjG4x5GazRD97L |
6 |
|
The document presents modeling results for perfluorooctanoic acid (PFOA) concentrations at the Shimizu plant for the years 1997 to 1999 under various scenarios, indicating maximum annual average concentrations occurring at the plant fenceline.
|
— |
AR226-2642
|
kDYG15nxz8bEYo1jD6qO8M79n |
11 |
|
The document is a Phase I Supplemental RCRA Facility Investigation Report for DuPont Fayetteville Works in Fayetteville, North Carolina, focusing on the assessment of environmental conditions related to the facility's operations, including the management of perfluorinated compounds like PFOA and PFOS.
|
— |
AR226-2637
|
3QwkL2RQxyB572y9Mkejeg4D3 |
59 |
|
This document reports groundwater sampling results from multiple wells conducted on August 6, 2002, indicating varying concentrations of FC-143 (a perfluorinated compound) with the highest concentration recorded at 1,540,000 NG/L.
|
— |
AR226-2643
|
6w8YdYMbQRjrzgybkxEkVx0D9 |
4 |
|
This document outlines the sampling procedures for analyzing C8 (PFOA) in wastewater samples from the Spruance Teflon process and wastewater treatment system, detailing specific sampling locations and coordination with laboratory personnel to ensure sample integrity.
|
— |
AR226-2644
|
Z2Ekp8bep1gZVXzypkOEVm3V |
5 |
|
The document details the processing and disposal of C8 (PFOA) during yarn production, indicating that 5% of C8 evaporates during sintering, with 80% of that being captured by exhaust scrubbing and sent to the process sewer.
|
— |
AR226-2645
|
g2Bdm8X1LrBzXrDwpv0O6jzye |
3 |
|
The document discusses Calgon Carbon's adsorption isotherm test results for ammonium perfluorooctanoate (C-8) and outlines plans by DuPont to use carbon adsorption technology for removing C-8 from wastewater.
|
— |
AR226-2647
|
qddvMzkakyjxX6jMaGL1eJb2K |
13 |
|
The document is a technical report from DuPont detailing the concentration of perfluoro octanoic acid (C8) in wastewater, indicating that the company's Community Exposure Guideline is set at 1 ppb, with an average expected concentration in the James River of 0.1 ppb, potentially exceeding the guideline only during extreme low flow conditions.
|
— |
AR226-2646
|
jyGdvDn6oOJgD4LVkZYy5wrRR |
29 |
|
This report details the dispersion modeling of PFOA emissions at the DuPont Washington Works site, utilizing EPA's ISC3 model to support interim updates to permits and address previously omitted emission points.
|
— |
AR226-2650
|
v1pLzjka2Xp60D6bXM5aGxjvE |
7 |
|
The document details the use of the ISC3 model to calculate ambient air concentrations and deposition rates of C8 emissions from the Washington Works site, incorporating data from a Consent Order and additional emission points, with specific focus on vapor and particle phase emissions.
|
— |
AR226-2649
|
9JJ6qEeZYgey4qn2Bz1o38Zmp |
13 |
|
This document outlines a verification study plan for air dispersion modeling and ambient air sampling of perfluorooctoanoic acid (PFOA) at the E. I. DuPont manufacturing facility in Washington, West Virginia, aiming to compare modeled predictions with actual measured concentrations.
|
— |
AR226-2651
|
OEXOyYx7ZR2a469kgBkYyq871 |
15 |
|
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 September 2002 to August 2003.
|
— |
AR226-2652
|
NGEBVY8YL6EZ7Y51bVr9RzZn8 |
9 |
|
The document presents findings from a subchronic toxicity study conducted by DuPont on male rats, detailing various liver lesions associated with different doses of a substance, likely PFOA or a related perfluorinated compound, administered via oral gavage.
|
— |
AR226-3244
|
6BXYLNRd8djmma6xap8yZwGp6 |
274 |
|
This report details dispersion modeling for the DuPont Washington Works facility to demonstrate compliance with the C-8 assessment of toxicity for PFOA emissions, ensuring they do not exceed the recommended airborne screening level of 1.0 µg/m³ at the property line.
|
— |
AR226-2653
|
NGzNb8aYzgqBmmyJwGXq7y0r8 |
7 |
|
This report details dispersion modeling conducted for the DuPont Washington Works facility to ensure compliance with the C-8 assessment of toxicity airborne screening level for PFOA emissions, demonstrating that the modified emission limits meet the required standard of 1.0 µg/m³ at the property line.
|
— |
AR226-2654
|
2j5QEDDoJk3DDoweMVzQMB7N |
7 |
|
This report details the dispersion modeling conducted for the DuPont Washington Works facility to ensure compliance with the airborne screening level of 1.0 µg/m³ for perfluorooctanoic acid (PFOA) emissions as per the C-8 assessment of toxicity, incorporating revised stack parameters and modeling methodologies.
|
— |
AR226-2655
|
QgVK4188QvjZqyqjLZB238xV7 |
7 |
|
This technical report submitted to Du Pont Company details the in-situ treatment of surfactant-contaminated aquifers using electrochemical processes, focusing on groundwater quality analysis related to the treatment.
|
— |
AR226-2648
|
O3vMYMk6zM39pYj6B4QM7644X |
163 |
|
This report details dispersion modeling conducted for the DuPont Washington Works facility to ensure compliance with the C-8 assessment of toxicity airborne screening level for PFOA emissions, incorporating revised stack parameters and reflecting changes due to a modified fenceline along the Ohio River.
|
— |
AR226-2656
|
zz9m0Nwazyap9MqxKBg2XZM2R |
7 |
|
This report details the dispersion modeling of APFO emissions conducted at the DuPont Washington Works site to support updates to R13 permits 1953A and 2365B, utilizing EPA's ISC3 model and incorporating building downwash effects.
|
— |
AR226-2657
|
qkZ0V859jmJ62Dvb9QRnx2gNk |
7 |
|
The document is an analytical report from Exygen Research detailing the air sampling program conducted by DuPont Corporation, specifically analyzing samples for Perfluorooctanoic Acid (PFOA) using liquid chromatography/mass spectrometry (LCMS).
|
— |
AR226-2658
|
GKaxkq2m8Q68vr1nJnrNMNwv7 |
19 |
|
This analytical report details the air sampling program conducted by DuPont at their Washington Works facility, where seven air samples were analyzed for Perfluorooctanoic Acid (PFOA) using liquid chromatography/mass spectrometry (LCMS).
|
— |
AR226-2659
|
O14Yaqg6Z3ybr0zjgqE8dk12e |
18 |