|
This is a letter from the Minnesota Department of Health regarding health risks associated with perfluorochemicals, specifically addressing the installation of carbon treatment systems.
|
2005 |
AR226-2737
|
ZgXXMRdQMenJbVp763oR9VR7 |
2 |
|
3M submitted a supplemental notice to the EPA regarding analytical data for water samples from private wells in Oakdale and Lake Elmo, Minnesota, indicating that PFOS was not detected in any samples and PFOA was detected in one sample below the report level of 1 ppb.
|
2005 |
AR226-2738
|
VG91MaVB10Eo2MwEL6Qk5ZO6w |
2 |
|
3M submitted a supplemental notice to the EPA regarding analytical data for water samples from private wells in Oakdale and Lake Elmo, Minnesota, indicating that PFOS was not detected in Oakdale samples and PFOA was detected in one sample below the report level of 1 ppb.
|
2005 |
AR226-2739
|
ErkywkKLqmVYbemyZ4z5J8mx |
2 |
|
The document reports that the Little Hocking Water Association, Inc. has provided blood sampling data from 25 individuals to the EPA, highlighting concerns about PFOA (C8) exposure due to high levels of the compound found in their water supply, which is sourced from wells near the DuPont Washington Works Plant.
|
2005 |
AR226-2741
|
Bv35rq12mwvv2w1Ywe89bVGw |
4 |
|
This is a letter dated June 9, 2005, regarding air modeling information for a perfluorinated chemical, addressed to a Document Control Officer, but no analytical content is retained in the OCR.
|
2005 |
AR226-2719
|
6b1kq90o9KXZgRBmdaXr3JKj1 |
1 |
|
Ciba Specialty Chemicals Corporation reported to the EPA unexpected liver effects in a 14-day oral toxicity study of a compound related to perfluorinated chemicals, with elevated liver weights observed in male rats at higher doses, although no mortality or significant clinical signs were noted.
|
2005 |
AR226-2718
|
gaME7rBoL7w5bnn9XBmVwdnze |
2 |
|
3M submitted a poster to the EPA detailing findings from a follow-up incidence study and a rat inhalation study, which indicated that the previously reported excess risk of bladder cancer was not associated with exposure to perfluorooctanesulfonyl fluoride (POSF) and related compounds.
|
2005 |
AR226-2720
|
5De2Ljad9aQdq48e0EyEZJOwD |
2 |
|
The Society of the Plastics Industry is reporting research results related to perfluoro carboxylic acids (C7-13) to the EPA, indicating no substantial risk to human health or the environment based on findings from a draft audited study report.
|
2005 |
AR226-2721
|
5Ln9EYM2m78waXjE32GpZEDz |
3 |
|
The document discusses a report submitted by 3M to the EPA regarding a Pathology Working Group's examination of mammary tumors in a chronic study of PFOA, concluding that the incidence of mammary gland neoplasms was not affected by PFOA administration.
|
2005 |
AR226-2722
|
rx4xQBQRodBx2n0b8v9Kx0jE |
2 |
|
This is a letterhead cover page from Patton Boggs, dated January 10, 2005, regarding a submission related to TSCA 8(e) concerning PFOA/PFOS, with attachments summarizing the submission.
|
2005 |
AR226-2724
|
4w9bQYbJOLMmVwLO0BgJqMoe |
12 |
|
This document is a pathology peer review report from Experimental Pathology Laboratories, Inc. concerning a chronic feeding study in rats with PFOA, sponsored by DuPont, which includes consensus diagnoses and statistical analyses of mammary tumors.
|
2005 |
AR226-2723
|
rB1gqb4ZVjqBJ2edEjJ1KYLeE |
74 |
|
DuPont is submitting additional information to the EPA in response to a November 4, 2004 request regarding perfluorinated compounds, indicating that they do not believe this information triggers reporting obligations under TSCA section 8(e).
|
2004 |
AR226-2742
|
YGEmM1wgZzgxGjxoJgDNm7XKn |
4 |
|
The document outlines a monitoring proposal for fluoropolymer manufacturing sites, specifically focusing on PFOA and PFOS monitoring at 3M and Dyneon in Decatur, AL, and DuPont in Parkersburg, WV, recommending a tiered approach to data collection and decision-making.
|
2004 |
AR226-2352
|
Gz6168GNvLV0Xba8nvpoqjnpx |
23 |
|
The document details the monitoring of PFOA emissions from Daikin America's Decatur Plant, reporting a total emission of 397 pounds over a year and outlining air dispersion modeling, surface water and sludge monitoring, and groundwater/soil sampling results.
|
2004 |
AR226-2353
|
vmgND4EJBngJzpeM27GR5ZOw |
11 |
|
The document outlines DuPont's 2004 multi-media sampling plan for PFOA and PFOS in West Virginia and Ohio, detailing air, water, soil, and biota sampling methods and objectives to compare ambient air concentrations with air dispersion modeling results.
|
2004 |
AR226-2354
|
9VGNQkZRKpXRrqN3veQELXRV |
29 |
|
The document discusses comments and questions regarding a draft soil and biota sampling procedure related to fluoropolymer investigations, emphasizing the need for clarity on sampling timing, definitions, and the inclusion of wind direction in relation to PFOA and PFOS deposition.
|
2004 |
AR226-2356
|
0q8Xneq2y0Ga62Ej50O0gMmem |
2 |
|
The document discusses proposed monitoring locations for sampling air, soil, and groundwater in Ohio related to PFOA (C-8) detected in private water sources, with recommendations for shifting sampling sites to better capture higher concentrations.
|
2004 |
AR226-2357
|
jyD2LjDO8MbkZjvXyNY9J2g5Z |
2 |
|
E.I. du Pont de Nemours and Company submitted a proposal to the West Virginia Department of Environmental Protection to address recommendations from the August 2003 "Final GIST Report" regarding the investigation of ammonium perfluorooctanoate (PFOA) in groundwater, with plans for further implementation upon approval.
|
2004 |
AR226-2360
|
bB6594NnL2GZGv43wzZmDeYpZ |
7 |
|
The document is a draft Phase II Monitoring/Sampling Work Plan for the DuPont Washington Works site in West Virginia, detailing air and water monitoring activities related to perfluorinated compounds, including sampling methods and analytical approaches.
|
2004 |
AR226-2358
|
xzO9qMda9wE9K2k7Dm2eqmo8g |
44 |
|
The document is a draft Phase II Quality Assurance Project Plan for the DuPont Washington Works site in West Virginia, outlining project management, organization, and quality objectives related to the assessment of perfluorinated compounds, including PFOA and PFOS.
|
2004 |
AR226-2359
|
3JReepy7qvJg4YB5Z3rzeM2M3 |
83 |
|
DuPont reported on the 3Q04 residential water sampling results for PFOA in Ohio and West Virginia, indicating that 17 water sources were sampled, with ongoing efforts to obtain permissions for additional residences as required by a Consent Order.
|
2004 |
AR226-2524
|
0qmGObDp3BkmzD94e7736wvbV |
6 |
|
This is a letter from Patton Boggs regarding a modified timeline for submissions related to environmental monitoring reports, addressed to the Office of Pollution Prevention and Toxics.
|
2004 |
AR226-2743
|
RpbZyOL3ybQeE14J7aMx036kv |
21 |
|
The document reports on a study conducted by E.I. du Pont de Nemours and Company that evaluated the acute toxicity of a substance identified as H-24750 (99.6% purity) to Daphnia magna in a 48-hour static test.
|
2004 |
AR226-2814
|
0Jy540zxVDbmznBKwJJ79z9mJ |
8 |
|
The document details a peer review of ovarian slides from a two-year oral toxicity-oncogenicity study in rats, conducted by E. I. du Pont de Nemours and Company, focusing on proliferative lesions and diagnostic criteria related to the evaluation of the effects of a perfluorinated compound.
|
2004 |
AR226-2816
|
Zpbqa6DEjxjyvw81BgBN2aq0 |
15 |
|
The document is a study report by E.I. du Pont de Nemours and Company evaluating the interference of certain test substances, including PFOA, in the analysis of rat serum lipids, completed on October 13, 2004.
|
2004 |
AR226-2817
|
oMerj9r9DMZ4eBEXz04XRBayo |
29 |
|
The document discusses the thermal degradation behavior of perfluorinated surfactants, specifically comparing the thermal stability of 3M's fluorosurfactant "C8" (FC-143) and another unspecified telomer product at 400°C, revealing that "C8" is unstable above 130°C.
|
2004 |
AR226-2678
|
KRDMzaQmm8v3beg3bJ942Yg0Q |
5 |
|
The document is a final report from Kurume Laboratory Chemicals Evaluation and Research Institute, Japan, sponsored by Daikin Industries, Ltd., detailing a biodegradation study of a perfluorinated compound (PFC) by microorganisms, conducted in compliance with OECD Good Laboratory Practice.
|
2003 |
AR226-2717
|
kDQjLg8E4Dpq8LrBpraMLGML0 |
128 |
|
The document presents emissions data related to PFOA from a DuPont facility, detailing reductions in both air and water emissions from 1999 to 2006, with significant reductions achieved in recent years.
|
2003 |
AR226-2731
|
Lpoa1XBYO1xea9krdjoEGKozX |
6 |
|
This is an internal email from Paul J. Bossert at DuPont regarding the scheduling of a meeting with the Ohio EPA on February 19, 2003, and requesting participation from Gerald L. Kennedy or Robert W. Rickard.
|
2003 |
AR226-2295
|
Rp1yw894zJ5zx76kYQV4YwM8n |
1 |
|
DuPont's statement addresses a January 7, 2003, letter from the Ohio EPA regarding concerns over ambient levels of C8 (PFOA) emissions, asserting that their own modeling does not support the EPA's findings and highlighting significant reductions in emissions from 2000 to 2002 due to equipment upgrades.
|
2003 |
AR226-2294
|
RJkBg1vGBByVpkJXXZjxbrEvX |
1 |
|
The document is an email from David M Rurak to various DuPont colleagues regarding the preparation for a conference call to discuss an upcoming meeting with the Ohio EPA related to PFOA.
|
2003 |
AR226-2296
|
zR651B0ap6n2nbrKZdEBy3on |
1 |
|
The document discusses the calculation of CEG (Concentration Exposure Guideline) levels for water and air at the Shimizu site, clarifying that air modeling will be conducted by Cathy Barton to compare air concentrations to the air CEG, while noting that the concentrations are too low for direct measurement.
|
2003 |
AR226-2297
|
Rp818KwRr0w5owREd5jJ4YMRv |
2 |
|
The document reports that DuPont's maximum annual prediction for actual 2002 emissions of PFOA is 1.36 µg/m³, occurring at the plant property.
|
2003 |
AR226-2300
|
RJQo8rwayzd3Ym3K41breVZ0X |
1 |
|
The document contains correspondence from Charles J. Zarzecki to Catherine A. Barton discussing snapshot results of PFOA emissions measured at 0.477 µg/m³ at a property line receptor, along with projected emissions for 2004 estimated at 0.443 µg/m³ at the same location.
|
2003 |
AR226-2301
|
716wnY0q9z3njeQVvxQy64LNa |
4 |
|
The document contains correspondence from Charles J. Zarzecki to Catherine A. Barton discussing maximum annual concentrations of PFOA in Ohio, reporting actual levels of 0.36 µg/m³ for 2002 and projected levels of 0.10 µg/m³ for 2004.
|
2003 |
AR226-2302
|
r6NYb24eE3vB0NZ7E57ZZLq4a |
6 |
|
This is a letter from the UW Department of Environmental Protection discussing air impact concerns related to ammonium perfluorooctanoate in Little Hocking, Ohio, addressed to Mr. Paul Bossert.
|
2003 |
AR226-2305
|
evae0GQD8addZ55zJY6obgxKG |
2 |
|
The correspondence discusses preparations for a meeting regarding C8 (PFOA) presentations, specifically requesting to highlight concentration areas on a map and to obtain exact concentration data from 2002 runs in Ohio.
|
2003 |
AR226-2306
|
1gykVymerRw443oQRVjYjeEYm |
1 |
|
The document discusses a March 2003 update regarding air emissions of C8 (PFOA) from DuPont's West Virginia facility, highlighting discussions about screening levels and permit limitations, with DuPont reporting a 50% reduction in emissions from 2000 levels and proposing a compliance plan.
|
2003 |
AR226-2308
|
zzVxD1n1qnLX52wXv7bdr0wVB |
1 |
|
This is an internal email from Mark C. Hause to David M. Rurak discussing the investigation of the ISC model's validity for specific time periods, with a suggestion to communicate directly with colleagues for future work.
|
2003 |
AR226-2309
|
99Q5vkKdBXvMgnD2w4QrN5Ko3 |
1 |
|
The correspondence discusses the potential discrepancies between modeled data and actual sampling results for PFOA, with Charles Zarzecki suggesting that actual sampling may yield lower numbers than the conservative ISC model, while Catherine Barton raises concerns about community sampling and its cost.
|
2003 |
AR226-2310
|
jmdNMbVn14j7MjBGJpVQpaN1Z |
1 |
|
The document discusses the need for real data from air monitoring related to carcinogenic hazardous air pollutants (HAPs) at the Edge Moor site, emphasizing the importance of validating ISC modeling predictions and providing cost estimates for ambient sampling to address public concerns.
|
2003 |
AR226-2311
|
eVpjwgpV39MDLxa98OdJVd84 |
1 |
|
The document reports that Charles J Zarzecki analyzed five years of data (1995-1999) for PFOA concentrations in Fayetteville, finding a maximum annual concentration of 0.00141 µg/m³ at the property line in 1997.
|
2003 |
AR226-2312
|
zzqRyBa1pOZb2RDYON6Z29YwR |
1 |
|
The document discusses the evaluation of the ISC Model Q for air quality modeling related to industrial emissions, with a focus on its limitations and appropriateness for regulatory use, as communicated among DuPont employees regarding modeling practices.
|
2003 |
AR226-2313
|
n9D4e6pDwm70qqaB9J8OyO9jR |
2 |
|
The correspondence discusses uncertainty in modeling results related to PFOA, with Charles Zarzecki expressing skepticism about the applicability of certain papers on Gaussian models to support their position on the variability of the findings.
|
2003 |
AR226-2316
|
rMzw8LB4dx490mG60O4dO8jv |
1 |
|
The document is a modeling report regarding emissions from the Washington Works facility, specifically related to PFOA, prepared by Debbie Mulrooney and shared by Charles J. Zarzecki.
|
2003 |
AR226-2317
|
mmQar1YQryz7dqewg6L2O2aEZ |
1 |
|
The document discusses concerns regarding the accuracy of Gaussian dispersion models in predicting PFOA emissions, highlighting potential overpredictions and suggesting improvements in modeling and data input to enhance regulatory compliance.
|
2003 |
AR226-2319
|
v6x23yev3qNnDJ7kz78EV6Lm6 |
1 |
|
The document details an air quality dispersion modeling analysis of ammonium perfluorooctanoate (C8) emissions from the DuPont Fayetteville facility, including methodology, emissions inventory, and meteorological data used for the study.
|
2003 |
AR226-2318
|
5bLL04MRmrVnwoLardzokz3pe |
4 |
|
The document discusses the need for dispersion modeling data related to emissions from basins in Environmental Treatment at DuPont, specifically focusing on whether the T O X C H E M model will generate an emission rate for perfluorinated compounds, with a deadline for submission set for April 11, 2003.
|
2003 |
AR226-2320
|
2Y2Kd7QgOD5qkjjeN5KX71pr |
1 |
|
The document is a request from Ann K Masse at DuPont for data related to air dispersion modeling and a mass balance analysis of PFOA in the DDE and DFS processes, with a deadline for submission by April 11, 2003.
|
2003 |
AR226-2321
|
XReyex3yn2LXMvY38b44njvgB |
2 |
|
The document discusses the need for additional influent and sorption kinetic data related to PFOA to finalize the ToxChem model for dispersion modeling at DuPont, with a deadline set for April 11, 2003.
|
2003 |
AR226-2323
|
rxBr69Ly81akzQGJ6gVBg8yLr |
2 |
|
The correspondence discusses the timeline and planning for wastewater sampling and emissions modeling related to PFOA at DuPont, indicating that definitive ambient air dispersion modeling results will take time to achieve.
|
2003 |
AR226-2322
|
3e6Dpq8oZeZar8wrMxLqzLo5n |
2 |
|
The correspondence discusses the development of input parameters for modeling PFOA emissions from wastewater treatment tanks, indicating that partitioning work and modeling efforts are separate but related tasks being managed by different teams at DuPont.
|
2003 |
AR226-2324
|
Kz6rqV32g51K8op5m6RwYE0nw |
3 |
|
The document provides data on air dispersion modeling for DuPont Dow's C8 (perfluorooctanoic acid, PFOA) release to the atmosphere, detailing a typical 96-hour campaign with varying release rates and operational forecasts for the plant.
|
2003 |
AR226-2325
|
yp4v34KmBvYLQm9QjMnanqan2 |
1 |
|
This is an email from John W. Milroy III to several DuPont colleagues discussing data for air dispersion modeling, noting a stack height of 25 feet and that the building operates in all seasons.
|
2003 |
AR226-2326
|
4QYpqj2x9J0RnadkQN78EZVLp |
1 |
|
The document is an email from Irene A. Legiec to several DuPont colleagues discussing the need for additional data on the physical and chemical properties of a compound of interest, likely related to PFOA or PFOS, to conduct emissions analysis using ToxChem.
|
2003 |
AR226-2329
|
15EYEM4OX8O8MQLdK0veaeK1j |
1 |
|
The document outlines the final sampling plan for assessing PFOA levels in wastewater outfalls and the Delaware River, detailing sampling locations, types, and parameters to be analyzed, including TSS and TOC, with a focus on effluent and river samples from DuPont facilities.
|
2003 |
AR226-2328
|
JJJM60M0pY4mwmg6076K7be3e |
3 |
|
The document outlines the dispersion modeling protocol for assessing ambient air concentrations of C8 emissions from the DuPont Chambers Works facility in Deepwater, New Jersey, detailing the necessary emissions inventory and the use of the ISCST3 model as recommended by the U.S. EPA.
|
2003 |
AR226-2330
|
YrNpgmwjxyL1wLDOJm6kd5o5y |
4 |
|
The document discusses modeling results related to PFOA concentrations at a property line, indicating that the maximum predicted concentration remains at 1.36 µg/m³, consistent with previous results, and notes that plume depletion is negligible due to short travel distances and small particle sizes.
|
2003 |
AR226-2332
|
JNyDzwjQpyznr4BDXKedBvpbO |
2 |
|
The document discusses a meeting organized by Ann K Masse for the DuPont environmental sampling mass balance team to review the status of air modeling related to PFOA, indicating a shift in business communications regarding the inclusion of recycle operations in their model.
|
2003 |
AR226-2335
|
GKzQB7LdGNy0m4RbD56JYYJDV |
1 |
|
The document outlines the modeling methodology and results for ambient air concentrations of pollutants, specifically focusing on emissions from DuPont's Shimizu site, utilizing the Industrial Source Complex Short Term 3 (ISCST3) model to assess PFOA emissions based on various input parameters.
|
2003 |
AR226-2336
|
ppDZ1K160NmRKdbykVxpb7Yy6 |
11 |
|
The document outlines the agenda and commitments of the Fluoropolymers Monitoring Technical Group regarding the reduction of emissions from the manufacture of APFO (Ammonium Perfluorooctanoate), highlighting a >99% reduction in emissions through air dispersion modeling and water monitoring, as well as ongoing commitments to not sell APFO outside the fluoropolymer industry.
|
2003 |
AR226-2338
|
kaapmQ9MBpnXqOQvep4jqoRNO |
13 |
|
The document outlines the agenda for a Fluoropolymers Monitoring Technical Group meeting, discussing the EPA's suggested priority changes, monitoring commitments, and significant reductions in emissions (over 99%) related to the manufacture of ammonium perfluorooctanoate (APFO) through air dispersion modeling and water monitoring.
|
2003 |
AR226-2339
|
x57jgRoN0vwRQzbjZap93Zzm1 |
41 |
|
DuPont Fluoroproducts submitted a follow-up report to the EPA detailing air dispersion modeling results for PFOA emissions from their Washington Works facility, indicating a reduction in emissions due to the installation of a new secondary recovery scrubber.
|
2003 |
AR226-2342
|
71GxD6Q2bnE6MEkQEVz0ZJ5o8 |
2 |
|
The document outlines an air dispersion modeling verification study aimed at comparing ambient air sampling results with modeling predictions for PFOA concentrations, detailing the sampling strategy, locations, and methods used for analysis.
|
2003 |
AR226-2346
|
V3N7OV3kgoNk32aqXDB65xrZZ |
21 |
|
The document discusses the relevance of soil sampling in site screening level assessments for PFOA, indicating that soil sampling is not critical for evaluating overall human and environmental exposure at PFOA use facilities, and emphasizes the importance of focusing water monitoring on site boundaries and discharge points.
|
2003 |
AR226-2347
|
ojRj5dD1zYYmnw0kEQ5aqjQw |
9 |
|
The document discusses site screening level assessments for PFOA, focusing on the relevance of soil sampling and presenting laboratory studies and field sample verification results related to PFOA behavior in water and soil, particularly from the Washington Works and Little Hocking Water Association investigations.
|
2003 |
AR226-2345
|
zd1xMvb823bjLdrYrbG4o51VR |
32 |
|
The document is a report detailing the results of a sampling investigation conducted by DuPont in August 2002 to assess ammonium perfluorooctanoate (C-8) concentrations in soil and groundwater near monitoring well TW-4 in the Little Hocking Water Association Well Field, revealing significantly elevated C-8 levels compared to surrounding wells and prompting further investigation by the Ohio EPA.
|
2003 |
AR226-2348
|
pm3Jq9kOeX0Kbm1z5Lo3Dw23j |
5 |
|
The document contains EPA's comments on DuPont's proposed air modeling approach using ISCST3 to determine groundwater sampling locations for PFOA monitoring, emphasizing the need for soil sampling verification rather than relying solely on air sampling.
|
2003 |
AR226-2349
|
wgRk6ZzLK5yy6NQgVyE496QO6 |
6 |
|
The document outlines a proposed Memorandum of Understanding between the Ohio EPA, West Virginia DEP, and DuPont to continue monitoring C8 (PFOA) concentrations in groundwater and surface water, based on recommendations from the GIST report, with activities scheduled to begin in the first quarter of 2004.
|
2003 |
AR226-2350
|
2R39qnoV1Y3w7QRw3QY4eeQMa |
38 |
|
This is a fax cover sheet from DuPont Fluoroproducts transmitting a letter to the Ohio EPA regarding DuPont's agreement to conduct additional investigations near the Licking Hocking Water Association well field.
|
2003 |
AR226-2351
|
oewmQ4ed1bEkZGdp05rzdRr2D |
3 |
|
The document is the Third Quarter 2003 monitoring report for C-8 (PFOA) in surface water and groundwater at the Washington Works facility and local landfills in Washington, WV, detailing analytical results and monitoring well data.
|
2003 |
AR226-2523
|
06ZvM4aJzYOxq3kbz98Rbda0n |
69 |
|
The document reports on the results of the Corrositex In Vitro Test (Study H-25537) conducted by E.I. du Pont de Nemours and Company to evaluate the skin corrosion potential of a substance, which is part of their assessment for regulatory compliance regarding corrosive packing groups.
|
2003 |
AR226-2806
|
70p6z3LGreyVx1Dw5pDRV5v86 |
9 |
|
The document reports that the substance H-25538, tested using the In Vitro International Corrositex assay by DuPont, was found not to be corrosive as it did not pass through any membranes during the evaluation.
|
2003 |
AR226-2807
|
xzjbne1Md29VGmoYenNnX2Lym |
9 |
|
The document reports on a static, acute 96-hour toxicity screening test of the substance H-24750, conducted by E.I. du Pont de Nemours and Company on the rainbow trout, Oncorhynchus mykiss, to evaluate its acute toxicity.
|
2003 |
AR226-2809
|
ZBr3OgG31Zr7z3K0vJGK8Lzr8 |
8 |
|
The document reports on a study conducted by DuPont to evaluate the influence of the substance H-24750 on the growth and growth rate of the green alga Selenastrum capricomutum, with algae exposed to various concentrations of H-24750.
|
2003 |
AR226-2810
|
em50xqXEaQjwR4DX64dM279m9 |
20 |
|
This document is a review of proliferative lesions in the exocrine pancreas observed in two chronic feeding studies in rats exposed to ammonium perfluorooctanoate (PFOA) conducted by DuPont researchers.
|
2003 |
AR226-2811
|
ga9Xjjmbewv8KdaevEbyJLZMa |
8 |
|
The document is a biopersistence screening study report conducted by DuPont on the oral gavage of rats, evaluating the effects of a perfluorinated compound, with the study completed on April 7, 2003.
|
2003 |
AR226-2808
|
xxM46DOOQ9M49NKNYbRBq0Lm |
82 |
|
The document reports on a study conducted by DuPont examining the relationship between repeated inhalation exposures to perfluorooctanoic acid (PFOA) and plasma PFOA concentration in rats, completed on November 5, 2003, in compliance with Good Laboratory Practice standards.
|
2003 |
AR226-2812
|
oDRq54erDneZ92QZ4RojggO3o |
56 |
|
The document reports on a study conducted by E.I. du Pont de Nemours and Company examining the age effect on plasma concentrations of Ammonium Perfluorooctanoate in post-weaning rats following oral gavage, completed on December 15, 2003.
|
2003 |
AR226-2813
|
pmQ3VQrLByZKLQNoVByv24KLE |
34 |
|
The document is a revised groundwater flow model report for the DuPont Washington Works in Washington, WV, detailing the hydrogeological setting and calibration results relevant to the assessment of groundwater movement potentially impacted by perfluorinated compounds.
|
2003 |
AR226-2598
|
7Rw1ry0v8j0KoLr8RRexeyVL8 |
56 |
|
The document discusses the progress of soil sample analysis related to PFOA at Little Hocking, indicating that quality control issues have been resolved and draft results are expected by late February 2003, with final results anticipated by mid-March.
|
2003 |
AR226-2599
|
g2Rwm16ZBe81oaveEb0XNejJN |
2 |
|
DuPont responds to the Ohio EPA's request for additional investigation regarding PFOA sampling at the Little Hocking Water Association well field, agreeing to conduct surface soil and groundwater monitoring while proposing enhancements to the sampling plan.
|
2003 |
AR226-2612
|
G5woQvjz58mYmDo34yYZzJMGm |
2 |
|
The document outlines the results of a sampling investigation conducted by DuPont in August 2002 to assess ammonium perfluorooctanoate (C-8) concentrations in soil and groundwater at the Little Hocking Water Association Well Field in Washington County, Ohio, revealing elevated C-8 levels in monitoring well TW-4.
|
2003 |
AR226-2611
|
3REXxz98xBkeawRmQ98oNNyJ |
5 |
|
The document presents the results of a sampling investigation conducted by DuPont and URS Diamond at the Little Hocking Water Association well field in Washington County, Ohio, focusing on the presence of C-8 (PFOA) in groundwater and soil samples.
|
2003 |
AR226-2610
|
JNRXJ2ODEznRyd2nBpjrODdwB |
41 |
|
The document presents test results for perfluorinated compounds (C-8/FC-143) from various sampling locations at Peis Chemical, indicating concentrations measured over multiple dates in 2002.
|
2002 |
AR226-2133
|
wq2O07e0kNzGVz54DGyEx1KL6 |
8 |
|
The document discusses modeling results related to PFOA emissions, indicating that the contour plots and maximum concentrations from dispersion runs show similar results to previous findings, with plans to proceed to deposition analysis.
|
2002 |
AR226-2241
|
6bKj3mQ5G50ga4YvXDeMqE6O4 |
1 |
|
The document discusses vapor concentrations of PFOA at specific receptor locations, providing average deposition rates for particulate and vapor forms across a designated grid area.
|
2002 |
AR226-2243
|
NmX5xr636M4NMab7qM8wKp5y |
1 |
|
The document discusses modeling results related to vapor concentrations of perfluorinated compounds at specific receptor locations, including average deposition rates for particulate and vapor forms.
|
2002 |
AR226-2246
|
kmVDMqR0RmpZYXVbbJ2aZdEzn |
1 |
|
The document discusses estimated average annual vapor concentrations of perfluorinated compounds at four cistern locations, based on modeling results from DuPont, indicating specific deposition rates for particulates and vapor.
|
2002 |
AR226-2247
|
o99mwzz7mbkY5NBgGxZyY9dN7 |
2 |
|
The document provides deposition totals for PFOA in three watersheds, specifically the Little Hocking, Lake Washington, and Ohio River, based on modeling data discussed between Debbie J Mulrooney and Robert F Pinchot from DuPont.
|
2002 |
AR226-2249
|
N27rXnkvOy8bBqj6QYz5zwVQ8 |
1 |
|
The document discusses a draft modeling report related to the leaching potential of perfluorinated compounds, with correspondence between DuPont employees Catherine A. Barton and Mark H. Russell regarding the review and discussion of the report's findings.
|
2002 |
AR226-2251
|
ym4ag9J6az8aavYd3xzEVayQ2 |
1 |
|
This is an email correspondence between Debbie J. Mulrooney and Robert F. Pinchot discussing the watershed deposition results for Little Hocking and Lake Washington, including specific area measurements.
|
2002 |
AR226-2253
|
3J05b3VEgMn66dmVavVnbJB1E |
1 |
|
The document discusses the evaluation of the leaching potential of mobile and persistent chemicals, specifically using the USEPA Pesticide Root Zone Model (PRZM), to estimate potential groundwater concentrations following the application of a chemical, with a focus on conditions in Washington County, OH.
|
2002 |
AR226-2252
|
0Jj2V5K6rp753r9DOnpV4enRx |
7 |
|
The document discusses the 2001 emissions of C8 (likely referring to PFOA) from DuPont, indicating that total emissions were 26,125 pounds, but the data is not yet broken down by emission point and requires further action for urgency.
|
2002 |
AR226-2255
|
zQQB9vQXgx68kxrLoDXEadV80 |
1 |
|
The document is a request for updated flow and stack height data related to an environmental impact study on APFO (ammonium perfluorooctanoate) conducted by DuPont, with instructions to revise and re-issue the study accordingly.
|
2002 |
AR226-2257
|
6bDwq6aNb0gwKZ7rvEV2YLXp9 |
1 |
|
The document discusses updates to an Environmental Impact Study regarding APFO (Ammonium Perfluorooctanoate) conducted by DuPont, specifically focusing on revised stack heights and gas flow rates for the study.
|
2002 |
AR226-2258
|
daLyype94jzd1dmXDg6Qpq8qR |
1 |
|
The document discusses production rate forecasts for PFOA-related products at DuPont, indicating a need to adjust emissions modeling based on updated projections for Fine Powder and FEP production.
|
2002 |
AR226-2256
|
yg6pyLpBrLEjMjQk6xg4ajD4 |
1 |
|
The document discusses emission estimates for PFOA production in 2003 by DuPont, indicating a planned distribution of production across three lines and mentioning the potential use of a deep-bed scrubber for emissions control.
|
2002 |
AR226-2260
|
YGyMaBLy1NxDYypKMRXraZ5ok |
1 |
|
The document discusses changes in stack height and gas flow rates related to an environmental impact study for APFO (Ammonium Perfluorooctanoate) at DuPont, indicating that the new parameters may not necessitate a revision of the modeling and report.
|
2002 |
AR226-2259
|
LJv7Zwkdw5abkB1q5jvm7on75 |
1 |
|
The document discusses an analysis received from Solvay regarding the long-range atmospheric transport of PFOA, with DuPont employees seeking comments on the methodology and accuracy of the analysis.
|
2002 |
AR226-2266
|
zoq0L4nJbOEOJwkVjX887GEG3 |
2 |