|
The document presents industrial hygiene test results for C-8 (PFOA) concentrations in various locations and dates from 1973 to 1981, showing concentrations ranging from <0.0001 PPM to 0.0015 PPM, all below the action level of 0.0%.
|
2001 |
AR226-2119
|
jym4kJ1vEvo74Nga46JVRYzrN |
51 |
|
The document presents test results for C-8 (likely referring to perfluorooctanoic acid, PFOA) concentrations in various samples collected from industrial settings between 1973 and 1981, showing consistently low levels of contamination at or below 0.1 PPM.
|
2001 |
AR226-2124
|
VJbJq1v2r06w0Gr5o8oDkbmV8 |
16 |
|
The document contains industrial hygiene test results for C-8 (a perfluorinated compound) from various dates between 1973 and 1981, indicating concentrations mostly below detection limits, with some samples showing values as low as 0.0001 PPM.
|
2001 |
AR226-2125
|
re7rQO0V77V19yB46Yo83z8y0 |
16 |
|
The document presents test results for perfluorinated compounds, specifically C-8/FC-143, from various samples collected between 1989 and 2001, indicating varying concentrations and percentages of contamination in an industrial setting.
|
2001 |
AR226-2123
|
LJkBQyedDoXaXb4RnoqygL12g |
49 |
|
The document presents test results for Chemical C-8 (likely referring to PFOA or PFOS) from various samples taken between January 3, 1979, and April 30, 1981, indicating concentrations mostly below detection limits, with action levels not exceeded.
|
2001 |
AR226-2128
|
a1DoQQ8MGVJXDkBXVypwEwmba |
2 |
|
The document presents test results for C-8 (perfluorinated compounds) from various samples taken between 1978 and 1998 at FEP ovens, indicating concentrations mostly below 0.0001 PPM with a consistent action level of 0.0%.
|
2001 |
AR226-2127
|
jgvKMVB2KR5qYxyYJ3w0aJN3R |
42 |
|
The document presents industrial hygiene test results for C-8/FC-143 (a perfluorinated compound) from various employees over a range of dates, indicating concentrations that vary from less than 0.01 MPB to as high as 1.59 MPB, with some samples exceeding action levels.
|
2001 |
AR226-2117
|
NexZNeGLp1g93bOVv92kMb6qy |
99 |
|
The document presents test results for perfluorooctanoic acid (C-8 or PFOA) concentrations in various samples from industrial hygiene assessments conducted between January 1979 and April 1981, indicating that all measured concentrations were below action levels, with some results showing less than 0.0001 PPM.
|
2001 |
AR226-2129
|
mJxVvG85Z8jpk8n2x6Qv4pQO |
2 |
|
The document contains test results for C-8/FC-143 (a perfluorinated compound) from various samples collected between 1981 and 2001, detailing concentration levels and percentages of the compound in different industrial settings.
|
2001 |
AR226-2132
|
yk0nBqdMXkZD35vov1QVbJmDn |
12 |
|
The document summarizes vapor phase modeling results for PFOA emissions from a Fayetteville facility, indicating that average concentrations for particle and particle-bound phases are lower than those for the vapor phase, and discusses the need for adjustments in the modeling parameters.
|
2001 |
AR226-2153
|
wD9ED3oJb6GDQVLv10kG5jgQo |
2 |
|
The document outlines a meeting recap regarding air and drinking water risk assessments for PFOA emissions from DuPont, detailing plans for additional air dispersion modeling and calculations to ensure compliance with environmental guidelines.
|
2001 |
AR226-2154
|
gbZyOe6okadqGK5yNRD8r8vLa |
1 |
|
The document outlines a meeting recap regarding air and drinking water risk assessments for PFOA emissions from DuPont, detailing modeling cases and calculations to ensure compliance with environmental guidelines.
|
2001 |
AR226-2155
|
n9jx2o8mVNpXD6Y7gRRYbbQvX |
1 |
|
The document is an email from Catherine A. Barton to Robert F. Pinchot discussing the development of a scope of work for air dispersion modeling related to PFOA emissions at the Washington Works site, with a focus on deposition impacts on surrounding land and the river.
|
2001 |
AR226-2156
|
x539nyrDxmebBMyveYgn4OeqQ |
1 |
|
This is an email from Robert F. Pinchot to Catherine A. Barton and Debbie J. Mulrooney at DuPont, regarding a proposal for a WW air dispersion model, referenced as AR226-2157.
|
2001 |
AR226-2157
|
NGK7aapL0Z5b3563kk85g8a6b |
1 |
|
The document discusses air dispersion modeling strategies related to emissions from DuPont's vent points, specifically addressing the recovery rates of scrubbers and filters for perfluorooctanoic acid (C-8) emissions, while noting permit limits for certain points.
|
2001 |
AR226-2160
|
ZJwL3RJZLYpw9MmG1XOMvV1DJ |
1 |
|
The document discusses a proposal for surfactant modeling related to PFOA by DuPont, including coordination among team members and a request for funding prior to a regulatory information request.
|
2001 |
AR226-2158
|
Y9v3L7D6nnGQ287r9VeE47ZBO |
1 |
|
This document outlines a strategy for modeling airborne emissions of APFO from DuPont's Washington Works facility, detailing communication with WVDEP regarding emission rates and the development of a modeling program to assess exposure potential.
|
2001 |
AR226-2159
|
mpKvLLNV87Og1E6r4z6ZOy5Zb |
2 |
|
The document is an email from Chris E. Shoop to various DuPont colleagues discussing updated air dispersion modeling data related to emissions from vents associated with a pending Research Semiworks application.
|
2001 |
AR226-2163
|
KRdk8LM40mXoODejbg7obyo4X |
1 |
|
The document discusses a communication among DuPont employees regarding the modeling of emissions related to a substance classified as a particulate and semi-volatile under EPA guidelines, with a focus on the need for independent modeling to verify results.
|
2001 |
AR226-2162
|
pBkdJ6a6NXLa05kgqLMR3X64k |
4 |
|
The document discusses DuPont's air modeling efforts for APFO emissions from their Fluoropolymers plant, indicating that they will use an EPA-approved model and expect initial results by the end of July 2001, while also suggesting that independent modeling by the West Virginia Department of Environmental Protection (WVDEP) should occur in parallel.
|
2001 |
AR226-2165
|
DvGOXr11BnppgQNzpZ19Vra1o |
2 |
|
The document is an email from Debbie J. Mulrooney of DuPont Engineering Technology, providing model input files related to source parameters and site boundaries for a project at DuPont's Washington Works, while indicating ongoing efforts to gather additional building information.
|
2001 |
AR226-2166
|
EJoYZVMz3X40dpv5BQwmxBjg |
1 |
|
The document discusses the preparation and submission of model input files related to environmental permit applications for DuPont's Washington Works, focusing on ensuring consistency with stack flows and velocities, amidst heightened scrutiny from the West Virginia Department of Environmental Protection (DEP).
|
2001 |
AR226-2169
|
2JQNZYJ1qONg2aJ5YegQkdqgL |
2 |
|
The document presents test results for perfluorinated compounds, specifically C-8/FC-143, from various sampling locations at a Teflon production facility, indicating varying concentrations and percentages over a period from 1981 to 2001.
|
2001 |
AR226-2131
|
jB0EnVKX50nx5j51LoL7B2wMy |
157 |
|
The document is a preliminary communication from Debbie Mulrooney of DuPont regarding the verification of building heights and structures at a site related to environmental engineering, with plans for a site visit to ensure accurate modeling.
|
2001 |
AR226-2171
|
99bY8p15w9bMJzvmkJVzK9M1D |
1 |
|
The document is an email from Debbie J. Mulrooney to Chris Carrington discussing a draft modeling protocol related to PFOA, with questions about averaging times, on-site exposure comparisons, and deposition modeling.
|
2001 |
AR226-2173
|
18MdwepZNLqNJoOwvZdg0n2X |
1 |
|
The document discusses revised modeling parameters related to C-8 (PFOA) emissions from DuPont's granular dryers, including estimates of allowable hourly rates and specific vent calculations.
|
2001 |
AR226-2175
|
rx4ybq7rago7XrMpLBR7RpDre |
1 |
|
The document outlines the dispersion modeling protocol for assessing ambient air concentrations of Ammonium Perfluorooctanoate (APFO) emissions from the DuPont Washington Works facility, detailing the methodology, emission source information, model selection, receptor grids, and meteorological data to be used.
|
2001 |
AR226-2174
|
5kVEZZnXz14DwgLQ8mkMewqBD |
3 |
|
This is an email from Chris E. Shoop to Debbie J. Muirooney at DuPont, discussing building heights and coordinates, along with attached files containing relevant data and revised UTM coordinates for vents.
|
2001 |
AR226-2178
|
85VOMZa3RqaGB38xXG65axrMy |
1 |
|
This document appears to be a spreadsheet titled "Building Heights" containing roof level data and coordinates for various structures, with annotations regarding typical heights and specific requests for additional details if needed.
|
2001 |
AR226-2179
|
5kDez0LxZvjODdL5NwOVQjErR |
4 |
|
The document presents test results for perfluorinated compounds (C-8/FC-143 and C-8/FC-14) from samples taken between February 1981 and April 1999, indicating varying concentrations with some samples exceeding action levels.
|
2001 |
AR226-2121
|
BRLEdg4rbOdKNm9w68nnaeB1E |
259 |
|
This is an email from Chris Shoop to Debbie J. Mulrooney regarding revised data for stack heights, diameters, and velocities, with an attachment labeled "Stacks & Surfactant Emissions-4.xls" and an EID of 386997.
|
2001 |
AR226-2181
|
6B77Yx62gZ64ZQwzbMx62mkK6 |
1 |
|
The document discusses the status of air modeling for APFO emissions from a DuPont plant, indicating that additional data is being awaited to run the model and plan for emission reduction actions.
|
2001 |
AR226-2180
|
mB991xN4O2KNnDkVvQObXrV1k |
1 |
|
The document outlines a meeting scheduled for August 27, 2001, involving DuPont personnel to discuss the finalization of an air dispersion model related to emissions of perfluorinated compounds, specifically focusing on incorporating emission reduction plans to minimize off-site concentrations.
|
2001 |
AR226-2182
|
Zq0gRbjzVg7LVnXLrOwMRmr8 |
1 |
|
The document is an email correspondence regarding the Fayetteville Report, where Debbie Mulrooney informs Catherine Barton that particle size information was added to the report concerning PFOA, and they are awaiting feedback from Bemle.
|
2001 |
AR226-2183
|
rBnpegR7VqN20Jzo9Y0xMzDGv |
1 |
|
The document presents an exposure evaluation for APFO (Ammonium Perfluorooctanoate) at the Fayetteville site, conducted by DuPont Engineering Technology, indicating that modeled air and water concentrations are significantly below established Community Exposure Guidelines.
|
2001 |
AR226-2184
|
g2vNLaKzr1mX8NG2g43e7oXnN |
12 |
|
The document presents an exposure evaluation for APFO (Ammonium Perfluorooctanoate) at the Fayetteville site by DuPont Engineering Technology, indicating that modeled air and water concentrations are significantly below established Community Exposure Guidelines.
|
2001 |
AR226-2185
|
rBxBXR6ov56DKJLXQYN1rB2R0 |
12 |
|
The document presents an exposure evaluation for APFO (Ammonium Perfluorooctanoate) at the Fayetteville site by DuPont Engineering Technology, indicating that modeled air and water concentrations are significantly below established Community Exposure Guidelines, with air concentrations at 0.0191 pg/m3 and water concentrations at 0.004 pg/L.
|
2001 |
AR226-2186
|
gDk2MNo41rxrvzNzXwVkJKk6a |
12 |
|
The document presents an exposure evaluation for APFO (ammonium perfluorooctanoate) at the Fayetteville site, indicating that modeled air and water concentrations are significantly below the established Community Exposure Guidelines, with air concentrations at 0.0191 pg/m³ and water concentrations at 0.004 pg/L.
|
2001 |
AR226-2187
|
DMnj7kxmvKBGz8VnB4jMRJV3M |
12 |
|
The document is an email from Debbie J Mulrooney to Chris E Shoop inquiring about the calculation of emissions related to PFOA (C8) in a revised spreadsheet, specifically whether the emission rates reflect total particulate matter or just the C8 portion.
|
2001 |
AR226-2188
|
3JdZLz4GVwnYxp9dqw8RN0any |
1 |
|
The document discusses revised emission rates for perfluorinated compounds from specific vent IDs at DuPont, indicating a preliminary redistribution of missing material based on potential emissions, with plans for further revision based on scrubber operating records.
|
2001 |
AR226-2189
|
k6eM172qxnYRLgGbmgDGXoQnD |
1 |
|
This is an email from Debbie J. Mulrooney to Robert F. Pinchot discussing revised results for a base case analysis related to fine powder dispersion, including a note about the scale of the plot used.
|
2001 |
AR226-2190
|
rebNwaR5jg96o5rGk2pKQGyBG |
1 |
|
The document outlines action items for improving the air scrubbing system's removal efficiency of APFO (ammonium perfluorooctanoate) at DuPont, indicating a need for at least 85% efficiency for the Fine Powder dryer and 93% for all dryer vents, along with a proposed increase in stack height by 20-30 feet to meet regulatory requirements.
|
2001 |
AR226-2192
|
kYdkYLvpqKM1YeBb8L359xvE |
1 |
|
The document discusses the need for DuPont to pursue stack height additions for five vents to ensure compliance with emissions standards related to APFO (ammonium perfluorooctanoate) based on dispersion modeling results for forecasted consumption in 2003.
|
2001 |
AR226-2193
|
baZVVpJZprwm5raXpxng31NKD |
2 |
|
The document discusses action items related to dispersion modeling for APFO (ammonium perfluorooctanoate) at DuPont, indicating that removal efficiencies for air scrubbing systems must meet specific targets and that vent stacks need to be increased by 20-30 feet to comply with regulatory requirements.
|
2001 |
AR226-2195
|
gYkzj06J4Q851RYQ1G13dvZe |
2 |
|
The document is an email from Stephen J. Glssy to various DuPont colleagues discussing the urgency of taking action on a matter related to dispersion modeling of PFOA, indicating his strong support for the decision.
|
2001 |
AR226-2194
|
0ZB4kpodLX0aByQEB7GxvpLd |
1 |
|
The document discusses the need for coordination among DuPont team members regarding the assumptions and model settings used in dispersion modeling for perfluorooctanoic acid (PFOA) in the Teflon production area.
|
2001 |
AR226-2196
|
Nb3QZjMMmv050nXxMQ1rM2ZV |
1 |
|
The document discusses the environmental dispersion modeling for APFO emissions conducted by DuPont, contrasting it with previous consequence assessment modeling for monomers, and emphasizes the use of the ISC model to predict annual average exposure concentrations for comparison with Community Exposure Guideline values.
|
2001 |
AR226-2197
|
XO5Jwzk9NgOkz4Y8Dv0ZX33x4 |
2 |
|
The document discusses the need for emissions modeling data related to PFOA and PFOS permit applications at DuPont, indicating that reductions from current emission levels are likely required before new permits can be issued.
|
2001 |
AR226-2198
|
1ywGowQqX33Yyja8DQmGrL53m |
1 |
|
The document is a communication from Chris E. Shoop to Debbie J. Mulrooney regarding revised modeling parameters for emissions related to DuPont, specifically highlighting changes in emission rates for perfluorinated compounds.
|
2001 |
AR226-2199
|
byZnm33Q0Z7NyzJazEd0vwp76 |
1 |
|
The document presents test results for TEFLON copolymers, specifically measuring the concentration of C-8/FC-143, with various samples showing concentrations ranging from <0.03 MPB to 0.5 MPB, indicating significant levels of perfluorinated compounds.
|
2001 |
AR226-2130
|
VKJmeMm7oxvpLOy4djJO33zL4 |
234 |
|
The document discusses concerns regarding meteorological data used in modeling related to PFOA, specifically noting issues with wind speed readings on November 12, 1996, and the potential justification for excluding problematic data from analysis.
|
2001 |
AR226-2201
|
XRd07raMa5QL6akL2yObM8RLy |
1 |
|
The document outlines a draft agenda for a teleconference regarding the consent order related to emission modeling for C8 (PFOA) and includes proposed language for Section VI.F. of the order, involving discussions on emission rates and physical properties.
|
2001 |
AR226-2203
|
O1e1M9KOo1312r55kJ58Gx5BQ |
1 |
|
The document discusses particle size distribution related to PFOA production processes at DuPont, indicating that the particle size is mostly around 0.3 microns and suggesting that losses may be influenced by the acid form of C-8 due to lower pH conditions.
|
2001 |
AR226-2205
|
Y9bvyKGzRpMr8VZjbw48ga76N |
2 |
|
The document is an email from Debbie J Mulrooney to Robert F Pinchot discussing the need for particle density data related to C8 (PFOA) for a sensitivity analysis as required by a consent order.
|
2001 |
AR226-2207
|
X7pJ3oMOjOn372qg0459QZaLd |
1 |
|
The document discusses a request for particle density data related to C8 (likely PFOA) for a sensitivity analysis as part of a consent order, with communication between DuPont employees Roger J. Zipfel and Debbie J. Mulrooney.
|
2001 |
AR226-2208
|
2q5X4N6wrN4O7aNpqEpX8GX2b |
1 |
|
The document is an email from Roger J. Zipfel to Debbie J. Mulrooney discussing the density of C-8 (PFOA) in powder form, noting that the provided MSDS indicates a bulk density of 0.4-0.5 and suggesting an estimated crystal density similar to Teflon at around 2.2.
|
2001 |
AR226-2209
|
G65ZGM2KbemrQzL0JEyEBOVXY |
1 |
|
The document outlines the coordination and data submission requirements for a Consent Order between DuPont and West Virginia state agencies regarding emissions of APFO (ammonium perfluorooctanoate), detailing responsibilities and tasks to ensure compliance within 30 days of the order's effective date.
|
2001 |
AR226-2210
|
LpyyX1R7BwX66pk8nawV3GnJq |
2 |
|
The document is a confidential communication regarding permitted emissions data for perfluorooctanoic acid (C-8) from DuPont, where Chris Shoop requests updates and verification of emission limits related to particulate and VOC classifications.
|
2001 |
AR226-2212
|
QkwBayajbEmgMJaXMvKKZbL4E |
1 |
|
The document discusses the compilation and analysis of isotherm data for APFO (perfluorooctanoic acid) by DuPont employees, including the request for an Excel spreadsheet of the data and the outline for a report detailing the methods and results of the tests conducted.
|
2001 |
AR226-2211
|
3JEZ41r410y9RjVMD3vNYKYKa |
3 |
|
The document is an email from Debbie J Mulrooney to Robert F Pinchot discussing the particle size distribution and density related to a consent order, with a focus on PFOA, and includes a spreadsheet for summarizing these data along with pending calculations for vapor scavenging coefficients.
|
2001 |
AR226-2214
|
aJb3zQ4nMGxveJ3MrY3kmN0bb |
1 |
|
The document is a correspondence from Chris E. Shoop to Ralph M. Aten regarding the need to update data on total C-8 emissions, specifically requesting separate figures for particulate and C-8 emissions from a semiworks site, with a deadline for submission to the state.
|
2001 |
AR226-2216
|
3NyK8GnaBR04VBRDY542x1g0y |
1 |
|
The correspondence discusses the submission of emission data related to PFOA from DuPont's semiworks facility, highlighting concerns about the accuracy of reported emissions and the inclusion of regulatory identification numbers in the documentation.
|
2001 |
AR226-2218
|
Y9eeyDz8bxEv0NmO0jLnabLjN |
1 |
|
The document discusses the preparation and submission of data related to C8 (PFOA) emissions by DuPont, including building dimensions for modeling and monthly emission reports, with deadlines set for December 16th and initial data collection expected to be in place by the end of the week.
|
2001 |
AR226-2217
|
pBXqJa5EJZqYr9yMRXMvoJnm7 |
3 |
|
This document is an email from Ron J. Buchanan to multiple recipients at DuPont discussing the upcoming draft of a groundwater activated carbon isotherm report related to PFOA data requirements, expected for internal review.
|
2001 |
AR226-2220
|
emwkOdwwxxQBa4Q4gBYbwj2QE |
1 |
|
The document is an email from Debbie J Mulrooney to Robert F Pinchot regarding a consent order that includes a spreadsheet with stack parameters and emission information related to emissions from DuPont, with a note that additional data on particulate and vapor mass fractions will be provided by Roger Zipfel.
|
2001 |
AR226-2221
|
zXLwydjjyVNb5Bnw0wx0mxw7 |
1 |
|
The document discusses the addition of C-8 (likely referring to perfluorooctanoic acid, PFOA) distribution data as gas or particulate to a spreadsheet in response to a consent order request regarding stack parameters and emissions from DuPont.
|
2001 |
AR226-2224
|
rB1VxnOrnQBDBNybGeYr3pbXv |
1 |
|
The document discusses the progress and requirements for a feasibility study related to headspace concentrations of APFO (ammonium perfluorooctanoate) as part of a Multi Media Consent Order at DuPont, with a request for data updates by December 10th.
|
2001 |
AR226-2223
|
2RL9BKNJg0ZDkd9a15Z1Zq8xb |
3 |
|
The document is an email correspondence from Robert F. Pinchot to Roger J. Zipfel discussing concerns about emissions data related to particulate matter and gases, questioning the relevance of PM-10 issues in the context of emissions from DuPont.
|
2001 |
AR226-2225
|
ZJaOEpJ4wJjmq5xNQg9p8jLJO |
1 |
|
This is an internal communication from Roger J. Zipfel to several DuPont colleagues regarding updates to a spreadsheet on gas/solids split and normal operating flow ranges in the C-8 scrubber exhaust stacks.
|
2001 |
AR226-2227
|
nmkKX9Yw3ZbNyyLZj3Vm1by3z |
1 |
|
The document discusses a draft request regarding a change in stack diameter for emissions at DuPont, with concerns raised by Robert F. Pinchot about the implications of increasing the stack diameter.
|
2001 |
AR226-2230
|
yrv5w4pa2X5EOLB8ea55XXO0E |
1 |
|
DuPont is requesting approval to increase the diameter of emission point T6IFCE from 18 inches to 22 inches to reduce back pressure in the scrubber system without impacting the production or mass emission rates of permitted processes, while maintaining compliance with existing emission limits.
|
2001 |
AR226-2231
|
2je20yOaK0Ra525kL4p3Jag9L |
2 |
|
This is an internal DuPont email from Steven L. Grise discussing vapor scavenging coefficients and referencing document number 2, with an invitation for comments from colleagues.
|
2001 |
AR226-2232
|
a4w5RJo07qMKa7QRn28VD0rrB |
1 |
|
The document is an email correspondence among DuPont employees discussing the inclusion of vapor scavenging coefficients and references in a report related to PFOA, with specific mention of meteorological data from the Washington Works site.
|
2001 |
AR226-2234
|
DDZngmgrLamkgM6LjqOXk4ExO |
1 |
|
This is an email from Steven L. Grise at DuPont to several colleagues, transmitting four modified documents related to vapor coefficients and indicating a need to redo calculations.
|
2001 |
AR226-2235
|
pp98EkJVwrRv814BnKqBe4oOD |
1 |
|
The document reports the results of ammonium perfluorooctanoate (FC-143) sampling conducted by Washington Works on June 14, 2001, showing concentrations of 0.594 ppb at Outlet 002, 7.4 ppb at Outlet 005, and 0.075 ppb in the river below Pages Run, in compliance with West Virginia Division of
|
2001 |
AR226-2482
|
RQKDGypQxrBXqdzKJDY9mRGX |
1 |
|
The document reports the results of ammonium perfluorooctanoate (FC-143) sampling from two outlets and a river location, indicating concentrations of 0.594 ppb and 7.4 ppb for Outlet 002 and Outlet 005, respectively, with a lower result of 0.075 ppb below the practical quantitation limit for the river sample.
|
2001 |
AR226-2483
|
wDVjq2Kn3Ry340qDwqEgLdvYd |
1 |
|
The document discusses proposed specifications for virgin and recovered/purified APFO (ammonium perfluorooctanoate) among DuPont and Daikin representatives, highlighting the need for alignment on testing methods and specifications before finalization.
|
2001 |
AR226-2485
|
da0gg34xB0Kawnmj30y2a6Xe |
2 |
|
The document is a correspondence from R.L. Ritchey regarding NPDES permit samples from Washington Works, reporting PFOA levels of 1.79 parts per billion and PFOS levels of 160 parts per billion in two outlets.
|
2001 |
AR226-2488
|
70EknkGBgoV1KQjk5w34YgMB6 |
1 |
|
This is a letter from DuPont Washington Works to the Lubeck Public Service District transmitting analytical results for water samples collected from three wells and the main water line on February 28, 2001.
|
2001 |
AR226-2489
|
npbvGky8ejdvxB8Qv3mRwKKO6 |
1 |
|
The document reports the results of sampling for ammonium perfluorooctanoate (FC-143) at Washington Works, indicating concentrations of 8.54 parts per billion at Outlet 002 and 199 parts per billion at Outlet 005.
|
2001 |
AR226-2490
|
zNjBqdBnRx62EKb54Mwzbggm |
1 |
|
The document reports the results of PFOA levels detected in water samples taken from Washington Works, with Outlet 002 showing 1.50 parts per trillion and Outlet 005 showing 4.31 parts per trillion, as part of the NPDES permit WV01279.
|
2001 |
AR226-2492
|
gDyZdXowM7xxQLExnj7rb15bJ |
1 |
|
The document is a certified mail correspondence from R. L. Ritchie, a Senior Environmental Consultant, reporting analytical results for a sample taken on May 31, 2001, which indicated the presence of PFOA at 0.439 parts per billion and PFOS at 1.43 parts per billion.
|
2001 |
AR226-2494
|
bajz9kmDg1V1dvkw9N547xqGy |
1 |
|
This is a letter from a consultant at Washington Works regarding analytical results for samples taken on June 14, 2001, with some results below the practical quantitation limit.
|
2001 |
AR226-2495
|
kDnn9ppbe1dG446o4D7n1vO1n |
1 |
|
This is a letter from L. Ritchey, Senior Environmental Control Consultant at Washington Works, transmitting results from July 2001 sampling for outlet002 and outlet005 to A. Turner at the West Virginia Division of Water Resources.
|
2001 |
AR226-2497
|
zbvrzJn9z370Q96mE2n8J8jDR |
1 |
|
The analysis report from Lancaster Laboratories details the testing of a water sample for perfluorinated compounds, specifically noting that the recovery of the aggregate PFOA (PC-143) was outside the quality control limits.
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2001 |
AR226-2496
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rpEO1xJNQVd7eqkL3EmBDeD2G |
4 |
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This letter requests approval from the West Virginia Division of Water Resources to discharge treated supernate through a filter system at Washington Works, ensuring that the concentration of ammonium perfluorooctanoate (FC-143) is below 10 parts per million before discharge into the Ohio River.
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2001 |
AR226-2500
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kaLzmmKJ5dn71Ze96BOKv2moy |
1 |
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The document discusses analytical results for water samples taken from LPSD wells, indicating that the presence of ammonium perfluorooctanoate (C-8 or PFOA) was detected with quality control issues, and DuPont plans to implement revised sampling and analytical procedures that may show higher concentrations of PFOA than previously reported.
|
2001 |
AR226-2502
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qaDZdkBYRXkKpLn5ROwr6pORG |
5 |
|
The document reports the results of monthly sampling for ammonium perfluorooctanoate (FC-143) at Washington Works, indicating concentrations of 2.8 µg/L and 62.6 µg/L at outlet 002 and 005 respectively in October, and 4.8 µg/L and 915 µg/L in November, while noting changes in laboratory methods since
|
2001 |
AR226-2508
|
RpYKLgqJYQYa2wQDaj6mGZ5OX |
2 |
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The document is the Final C-8 Groundwater Investigation Steering Team Report from August 2003, detailing the investigation of Ammonium Perfluorooctanoate (PFOA) in groundwater sources in West Virginia and Ohio, including public and private water supply assessments.
|
2001 |
AR226-2522
|
gbBxbGKaxyB0rbZgojxN95M3J |
148 |
|
The document is a C-8 Data Summary Report detailing groundwater and surface water analyses related to PFOA at the DuPont Washington Works facility and surrounding landfills, including assessments of existing monitoring data and plume identification efforts.
|
2001 |
AR226-2521
|
LpqONJdKYKV7VryKYmOVY7e3d |
196 |
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This letter provides an update on the ongoing groundwater monitoring program at DuPont's Washington Works Plant in West Virginia, highlighting that groundwater constituents detected from Solid Waste Management Units are being captured by production wells, with continued monitoring and maintenance of pumping rates as recommended by the 1999 RCRA Facility Investigation.
|
2001 |
AR226-2549
|
pmya8y90vZb7n4LMybvz8wRZE |
3 |
|
The document reviews the results of a RCRA Facility Investigation conducted at a DuPont manufacturing site in West Virginia, focusing on the environmental impact of perfluorinated compounds, including PFOA, and providing conclusions and recommendations based on the findings.
|
2001 |
AR226-2551
|
nNy5wa5X8orrEDjR12b7z6J86 |
37 |
|
The document is an email correspondence from Andrew S. Harden requesting information from DuPont regarding the NPDES permit and recent discharge data related to the Washington Works Facility, specifically concerning the monitoring of untreated discharges and analytical results for PFOA and other parameters.
|
2001 |
AR226-2557
|
77qLoJqwe2gob6mdddmOrRoo |
1 |
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The document discusses the estimated emissions of C-8 (PFOA) from the Washington Works Facility, indicating that the majority of emissions are discharged directly via Outfall 005, with recent estimates ranging from 40,000 to 60,000 lbs/year, and notes expected reductions due to the implementation of a new carbon adsorption treatment unit.
|
2001 |
AR226-2558
|
4a3pNgnEo9275aBOar3pYD5dN |
2 |
|
DuPont submitted an initial response to the EPA's Information Request regarding PFOA-related information, expressing concerns about the broad scope of the request and indicating that a more comprehensive response would follow after a scheduled meeting with the EPA and West Virginia DEP.
|
2001 |
AR226-2560
|
3QG0w7NmrMKBbq3K7vanX4pMJ |
13 |
|
DuPont's response to an EPA inquiry asserts that ammonium perfluorooctanoate (APFO) does not pose a health hazard at the concentrations found in their Washington Works Plant or the surrounding community, citing medical surveillance and epidemiological data to support this conclusion.
|
2001 |
AR226-2561
|
DMLg5xbpwRZjLGkKLRn4rjkVQ |
4 |
|
The meeting notes from September 25, 2001, detail discussions among EPA and ACOE representatives and DuPont regarding the groundwater model for the Washington Works Plant in Parkersburg, WV, highlighting the need for further investigation of the bedrock aquifer and additional field data to support the model's conclusions about groundwater capture and quality.
|
2001 |
AR226-2562
|
82ap19BQERqa4KKeXmMQ31v7y |
2 |
|
This document is an update from Andrews Hartten regarding the preparation of a response letter to the USAGE's draft review of the Wash Works model, the inclusion of team members in the Consent Order, and the successful results of recent C-8 (PFOA) analytical method upgrades showing historical levels of contamination in drinking water samples.
|
2001 |
AR226-2564
|
2JvBZRL6xM1E10ZkxzJgkQKRR |
1 |
|
DuPont's First Supplemental Response to the EPA's July 24, 2001 Request for Information details the company's process flow and material balance concerning C-8 (PFOA) used in their manufacturing processes, while also indicating that further information regarding capital requests is pending clarification from the EPA.
|
2001 |
AR226-2563
|
mBY7Ka7BO8zeaX4q851VZqwZO |
4 |
|
The document discusses concerns raised by West Virginia Department of Environmental Protection (WVDP) representatives regarding potential health risks associated with C8 (PFOA) consumption, referencing a monkey study and a cattle study, and outlines the West Virginia Department of Health and Human Resources' (DHHR) intention to request an evaluation from the Agency for Toxic Substances and Disease Registry (ATSDR) due to
|
2001 |
AR226-2568
|
MGv8a9DxZbX330QYrwjLvyL8y |
4 |