|
The document is a letter from DuPont Polymers to the EPA summarizing the results of ammonium perfluoro-octanoate (FC-143) and Triton X-100 analyses from a Local Landfill Verification Investigation, indicating that all samples were analyzed according to protocols and noting the absence of Triton X-100 in one sample location due to dry conditions.
|
— |
AR226-2433
|
QkBDqkqjQZzEYMbY20kQ74Jq4 |
2 |
|
The document discusses recent sampling results of C-8 (PFOA) in the drinking water at the Washington Works site, revealing levels between 0.1 and 3.3 parts per billion, which are considered high but not a health threat to employees, as they remain compliant with corporate exposure limits.
|
— |
AR226-2432
|
Dvxwp0pjy9r5MjG2Z7qeEJ85 |
3 |
|
The document outlines a proposal for uniform sampling and analysis procedures for C-8 (PFOA) to ensure consistent results across different sites and years, emphasizing the need for standardized methods in sample collection, concentration, and preparation.
|
— |
AR226-2434
|
reQoZZKpyDLxmqZQJ2reJ1O7r |
5 |
|
The document is a correspondence from Roger Zipfel requesting 3M to share their electrospray method for C-8 (which includes PFOA) detection with DuPont as part of a secrecy agreement.
|
— |
AR226-2438
|
pz9egMJ2XjL5KnQ8L8RMyg8X |
3 |
|
The document discusses the analysis of a sample (SMCFEP-14-2) to determine the presence of C8 (perfluorooctanoic acid) using mass spectrometry, concluding that C8 may be present in a less volatile salt form based on the evolved gases at different temperatures.
|
— |
AR226-2440
|
jgbpgwpE1dm5O9zxED0kQXXJy |
1 |
|
The document reports analytical results for C-8 (PFOA) in a special batch of FEP dispersion, indicating an average concentration of 980 ppm, which is consistent with the expected recipe concentration, suggesting no significant vapor escape from the autoclave.
|
— |
AR226-2442
|
OEEo7m7Xg22BQooVk2mvLwr5p |
1 |
|
This is an email correspondence regarding the C-8 Biofate Program well sampling, indicating a need for discussion with Dave Ellis before making changes to the current program.
|
— |
AR226-2445
|
b5YzMO61B43YwGO3p3my4oJ3y |
1 |
|
The document discusses varying concentrations of C-8 (PFOA) in samples taken from a wet finishing line at Dordrecht, with results indicating a decrease in PFOA levels over time and uncertainty regarding the cause of this variation.
|
— |
AR226-2446
|
7YMLaZgggO9RzyoXj3bp1zBR |
2 |
|
This is a fax cover sheet from 3M Environmental Technology & Safety Services regarding soil sample analysis, with reference to AR226-2450 and associated data on fluoride levels.
|
— |
AR226-2450
|
pebwamgwN31aekRj28oaXEbOD |
2 |
|
The document presents analytical data from CH2M HILL regarding the detection of perfluorononanoic acid and perfluorodecanoic acid in a water sample (WELL-331) extracted on June 26, 1990, with varying recovery percentages.
|
— |
AR226-2452
|
jg83mE0rw7VDeE464VL3OyrDO |
1 |
|
The document presents organic analysis data from CH2M HILL Lab indicating low concentrations of perfluorononanoic acid and perfluorodecanoic acid in a water sample (WBII^-33g) extracted on June 26, 1995, and analyzed on July 8, 1998.
|
— |
AR226-2453
|
a1rY8rqVZRnV46RG2MDOeomBy |
1 |
|
The document provides a summary of groundwater sampling results for PFOA and other compounds from two sampling events at DuPont's Washington Works facility, indicating various concentrations and comparing them to established standards.
|
— |
AR226-2458
|
qa91ExGEy2mvGkpNmDGvq17Jn |
3 |
|
The document presents analytical results for the perfluorinated compound FC-143 (likely a reference to PFOA/PFOS) from various sampling locations including ponds and streams, with results indicating varying concentrations across different dates and sites.
|
— |
AR226-2457
|
byZRXNqjpB9jJbOXVonvOBV2k |
5 |
|
The document discusses the lack of recent data on C-8 (PFOA) levels in drinking water from DuPont sites, with a focus on groundwater contamination in Parkersburg and requests for updated information from Dordrecht and Shimizu.
|
— |
AR226-2459
|
Vj5zrqXvYRD1yeJwzpy1vd9yZ |
3 |
|
The document discusses groundwater contamination levels of C-8 (PFOA) near old disposal ponds in Parkersburg, with reported concentrations as high as 1500 ppb, indicating a significant environmental issue.
|
— |
AR226-2460
|
pBZa00bYKdDQXRZ5Nrq8bVzRX |
1 |
|
The document is an email from Roger J. Zipfel to Gerald L. Kennedy and Anthony J. Playtis discussing the need for a phone discussion regarding allowable levels of C-8 (PFOA) in drinking water for employees at a DuPont site, in light of recent data and groundwater issues related to an adjacent GE plant.
|
— |
AR226-2461
|
qaq4eDy88n9bjj0rkJQ36doej |
1 |
|
The document discusses high C-8 (PFOA) results found in the FEP slab rack area and Fine Powder C-8 recovery building at DuPont, indicating levels close to the action exposure limit (AEL) and suggesting the need for investigations to determine the cause.
|
— |
AR226-2463
|
ypmEoK6dJrBqmVYwqg5jX5m3 |
1 |
|
The document outlines communication points regarding C-8 (PFOA) testing results from GE Plastics, indicating that early June testing of GE drinking well showed concentrations below 3 ppb, which is lower than the threshold limit value (TLV).
|
— |
AR226-2462
|
2jzZvgwKR56DBbG81LgkMYdXr |
3 |
|
The document summarizes analytical results from samples taken on 07/22/99 and 12/29/99 from various wells and stream sampling stations, indicating the presence of perfluorooctanoate (PFOA) with specific concentration levels reported for each location.
|
— |
AR226-2468
|
G9z42G47L87makxm8od6MVm |
1 |
|
The document is a letter from R. L. Ritchey of DuPont to Mr. James C. Cox of the Lubeck Public Service District, providing analytical results for water samples taken from three wells on April 19 and May 24, 2000, with a note that the May 24 sample was a resampling due to breakage of the original container.
|
— |
AR226-2473
|
2Re2009qNgaqB513mRzwenDX7 |
5 |
|
The document is a communication from DuPont personnel discussing a test matrix for C-8 (PFOA) from various sources, indicating ongoing updates and requests for feedback on the accuracy of the information presented.
|
— |
AR226-2474
|
JJ70Qbj6BG1jxM1yNEZepwg2v |
1 |
|
Unreadable document.
|
— |
AR226-2484
|
wr8eboyqnygxZ79RLzvYn2DLV |
1 |
|
The document contains analytical results for water samples taken from Lubeck Public Service District wells on February 28, 2001, indicating issues with quality control limits for certain compounds, although specific results for PFOA or PFOS are not mentioned.
|
— |
AR226-2487
|
0qdeXBM2mQXqryoEvL7ZD12bR |
6 |
|
The document provides analytical results for water samples taken from three Lubeck Public Service District wells and the main waterline, analyzed for perfluorinated compounds using two different methods.
|
— |
AR226-2491
|
BB6xmdBM0o3Y3zDw9qzoYO8 |
1 |
|
The letter outlines the operating procedure for treating supernate discharge at the Washington Works facility, specifying that ammonium perfluorooctanoate (PFOA, referred to as FC-143) concentrations must be below 10 ppm before discharge through the filter system to Outlet 005, and includes monitoring for foaming and visible solids during the process.
|
— |
AR226-2499
|
EqgJxavzZYK8apg2MKwD5Jw1N |
2 |
|
This is a Lancaster Laboratories analytical report prepared for DuPont de Nemours & Co regarding a sample collected on July 35, 2001, with job number 7035-5074.
|
— |
AR226-2498
|
DM4XjR3nrO64de87aYbaee8nB |
12 |
|
The document reports the results of water sampling for FC-143 at Washington Works, indicating significant levels of the compound detected at outlets 002 and 005 in October and November 2001.
|
— |
AR226-2504
|
dYmGagXYN5LmQ3GZgwoJ11aDe |
1 |
|
The document presents analytical results of PFOA concentrations in public water systems along the Ohio River, showing a range from non-detectable levels to 6.2 µg/L at various well fields, with the highest concentrations observed at the LitHkg site.
|
— |
AR226-2505
|
aJxdwGJg78zBGbYgLMxMXY48R |
1 |
|
Unreadable document.
|
— |
AR226-2506
|
a1XoYeByQ2qaZvLB25wD3n2YR |
2 |
|
This document appears to be a series of analytical results and standard plots related to a study, with references to various measurements and calibration data, but lacks clear context or identification of the specific analysis performed.
|
— |
AR226-2510
|
Mbxzq9LGXXpyLdyprpXDjdyM |
5 |
|
The document discusses the analysis of an acidic waste sample for APFO (ammonium perfluorooctanoate) by GC testing, revealing no APFO presence after neutralization with NaOH, but successful detection of spiked APFO using HPLC, indicating a promising method for future analysis.
|
— |
AR226-2520
|
byme7087jDwNqjwX76Yb7ggG1 |
1 |
|
This document appears to be a communication from a laboratory regarding water sample results, specifically detailing analytical findings for various wells and Ohio River locations, with some results indicating non-detection of contaminants.
|
— |
AR226-2525
|
EvM4yjEV4og7vErQwnZyY0xDn |
1 |
|
This document presents a comparison of recent water sample results from Experimental Station C-3, detailing concentrations and surrogate recovery percentages for various duplicates analyzed by CH2M Hill.
|
— |
AR226-2527
|
91YK7ZNaV6zRz1eykdeKpMN4L |
1 |
|
Unreadable document.
|
— |
AR226-2526
|
VjLLzZEaE86d5yb00x3J1Ldp8 |
1 |
|
Unreadable document.
|
— |
AR226-2528
|
pwbjMVzQJQDB0nRBQZaJa99w |
1 |
|
Unreadable document.
|
— |
AR226-2530
|
X78rdO0MB7MJozaJjJV66NjG |
2 |
|
This is an agenda for a C-8/Water meeting scheduled for November 7, discussing global C-8 issues, verification investigations, future sampling needs, client services, methods discussions, and the path forward, with various participants listed.
|
— |
AR226-2532
|
VJdaXXGLDXMvRekJjBRnK3pbZ |
2 |
|
The document presents analytical results comparing the concentrations of perfluorooctanoic acid (PFOA) in rat blood samples using gas chromatography and Vickbold Torch analysis, indicating varying levels of PFOA across different sacrifice tubes and time points.
|
— |
AR226-2531
|
gDgqaz1ZVJMZD5jXYbLGvwrJe |
6 |
|
The document discusses the measurement of residual C-8 fluorosurfactant levels, specifically "Fluorad" FC-143, in various TEFLON-based products following teratogenic findings from 3M Company, noting that low levels of C-8 (1-5 ppm) have been detected in TEFLON fine powders and granular resins.
|
— |
AR226-2533
|
XOogYkX7Okj7doJnj9vKrNJXy |
3 |
|
The document is an analytical report from Exygen Research detailing the fluorochemical characterization of water samples received from DuPont Corporation, specifically analyzing for ammonium perfluorooctanoate (APFO) using liquid chromatography/tandem mass spectrometry (LC/MS/MS).
|
— |
AR226-2501
|
EqoyRXgVg96xwR3Or36YdornL |
133 |
|
The document discusses the draft R O M permit for Du Pont's Washington Works facility, emphasizing the need for a Verification Investigation (VI) regarding potential contamination from perfluorinated compounds, specifically requesting modifications to the permit's requirements for sampling and investigation timeframes.
|
— |
AR226-2535
|
q3kd1aDy3xVXzgJ6YKQbaQV4j |
4 |
|
The document reports on a study conducted by E. I. du Pont de Nemours and Co. at the Haskell Laboratory, which found that ammonium perfluorocaprylate has an approximate oral lethal dose of 670 µg/kg in rats, with observed clinical signs of toxicity including inactivity, weight loss, and liver enlargement.
|
— |
AR226-2744
|
Exoo2M5DR9L7jxgKXq94QKOwL |
2 |
|
The document reports that ammonium perfluorooctanoate is slightly toxic to male rats, with an acute lethal dose (ALD) of 670 mg/kg, and indicates liver enlargement and gastrointestinal signs at doses as low as 60-90 mg/kg.
|
— |
AR226-2746
|
xJ9vD71ONE1mDd9q4qLzvEqG |
2 |
|
The Haskell Laboratory report indicates that ammonium perfluorononanoate was found to be moderately toxic in male rats, with various doses resulting in both lethal and nonlethal effects, including significant weight loss and other clinical signs.
|
— |
AR226-2747
|
2NrMNZ3EvkzE9rrQaL3ZKLpjp |
2 |
|
The document reports on a medical research project investigating the effects of fluorocarbon dispersing agents on liver enlargement and histological changes in rats and dogs, noting significant liver growth in rats after a single oral dose of 12 mg/kg.
|
— |
AR226-2745
|
B53kvmZ1KOwLZwpb1beBq3v0j |
20 |
|
The document reports on an acute oral toxicity test of a perfluorinated compound conducted by Haskell Laboratory for E. I. du Pont de Nemours and Company, finding that the approximate lethal dose (ALD) is 450 mg/kg in male rats, with signs of liver enlargement and gastrointestinal irritation observed at lower doses.
|
— |
AR226-2748
|
6bVpgOBZj56BjY5E9LL7OpjOd |
2 |
|
The Haskell Laboratory Report No. 160-69 details the toxicity testing of Ammonium Perfluorooctanoate, revealing significant adverse effects including mortality, eye damage, and respiratory distress in test subjects.
|
— |
AR226-2749
|
Ne2ngE98JarByOajd02By0zE |
4 |
|
The document reports on an eye irritation test conducted by Haskell Laboratory for E. I. du Pont de Nemours and Company, which evaluated the ocular effects of Octanoic Acid, Pentadecafluoro-, Ammonium Salt in albino rabbits, revealing moderate to severe corneal opacity and conjunctival congestion over a 14-day observation period.
|
— |
AR226-2751
|
2r0pd3MdXK1y3gLwDNb2Brda |
2 |
|
The document reports on a toxicity study conducted by E. I. du Pont de Nemours and Company at Haskell Laboratory, evaluating the LD50 values of ammonium perfluorooctanoate in rabbits and rats, with findings indicating mortality at doses of 3,000 mg/kg for rabbits and 1,500 mg/kg for rats.
|
— |
AR226-2753
|
a4wKxJp5kvgbgGqwaq224bEXM |
3 |
|
The document reports on a study conducted by Haskell Laboratory for Toxicology and Industrial Medicine to investigate the inhalation effects of Ammonium Perfluorooctanoate on albino male rats, focusing on determining a "no effect" level following exposure.
|
— |
AR226-2750
|
awoVKag0YELJNmKqbqgKOjnM |
26 |
|
The document is a Haskell Laboratory report detailing a skin absorption toxicity study of octanoic acid, pentadecafluoro-, ammonium salt, which found it to be slightly toxic in female rats with an LD50 greater than 7,500 mg/kg, accompanied by mild skin irritation and weight loss.
|
— |
AR226-2755
|
9Jzxj1vbOn76w10mbkvpD5ZZ3 |
2 |
|
The document reports on an oral LD50 toxicity test conducted by Haskell Laboratory for E. I. du Pont de Nemours and Company, which determined that the LD50 value for the test substance, likely a perfluorinated compound, was 96 mg/kg in young adult male rats, with various clinical signs of toxicity observed at different dose levels.
|
— |
AR226-2756
|
rpwvLGLE6r6d0Rz1yzq1ae0dE |
3 |
|
The document reports on an eye irritation test conducted by E. I. du Pont de Nemours and Company on a test material, indicating that it may produce slight to mild eye irritation in rabbits, with symptoms resolving within two days.
|
— |
AR226-2757
|
qake1aVREmZvkebJ6XE4YdByM |
2 |
|
This document is a Haskell Laboratory report detailing a skin irritation test on rabbits using an undiluted test material from DuPont, which showed no signs of erythema or edema after 24 and 48 hours, indicating no unusual dermatitis hazard from handling the material.
|
— |
AR226-2758
|
baekRR5N8v37okNMODZvd8eqg |
2 |
|
The document reports on an oral LD50 toxicity test conducted by Du Pont de Nemours and Company on PFOA in rats, indicating that the LD50 is greater than 25,000 mg/kg with minimal clinical signs observed.
|
— |
AR226-2759
|
zoGNa27JRm7jJ9zXjKBE8wQVg |
2 |
|
This is a laboratory report from DuPont analyzing the mutagenicity of a test sample, with methods and results pertaining to the assessment of bacterial revertants and controls included.
|
— |
AR226-2760
|
bayKvdxZyLoB5kRyXL4JV3p01 |
8 |
|
The Haskell Laboratory report details an oral LD50 toxicity test of ammonium pentadecafluorooctanoate (a perfluorinated compound) in guinea pigs, finding an LD50 of 178 mg/kg for males and 217 mg/kg for females, with various clinical signs observed at different dosage levels.
|
— |
AR226-2763
|
6wE8dMoOLDRwKyg3n5ZDQjjkE |
4 |
|
The Haskell Laboratory Report No. 295-81 presents toxicity results for a perfluorinated compound, indicating an LD50 of 470 mg/kg with observed effects such as weight loss and staining at various dosage levels in test subjects.
|
— |
AR226-2764
|
xjddY2p7qrOwa6j5dD7p2Mad6 |
4 |
|
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 |
|
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 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.
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AR226-2793
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1g6KOX0QLB8Y3M9V4okZ8mxjm |
16 |
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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.
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— |
AR226-2795
|
wDMwYpZkNyEMM2r5Mw6kbBEK3 |
9 |
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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.
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— |
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.
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AR226-2565
|
nkN21d1Kg1Z0axoX9eDrRdjxa |
13 |
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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.
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AR226-2569
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vVRVYpL4X86dLY0ZkwzVX90kZ |
1 |
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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.
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— |
AR226-2570
|
B8wEYJ6Zg1BE8vB1ggJjJVaem |
2 |
|
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.
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— |
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.
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— |
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.
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— |
AR226-2588
|
50OGkEKd4omKMbbY72dJmy525 |
1 |
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This is a letterhead cover page from an unspecified laboratory, with no analytical content retained in the OCR.
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— |
AR226-2600
|
wgNoax9nYLEeL46wpyVGyKp3B |
2 |
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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.
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— |
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.
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— |
AR226-2602
|
4Jgw4LKBzGXgVDV7ga0Nq5OYe |
3 |
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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.
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— |
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.
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— |
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.
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— |
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.
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— |
AR226-2616
|
wKyrzzwwnoQvjK3ErJ1JJJoK6 |
5 |