|
This document appears to be an emissions inventory report detailing permitted and actual emissions for various stack vents, including specific measurements such as stack diameter, height, flow velocity, and temperature, along with associated particulate matter fractions.
|
1953 |
AR226-2176
|
rZd6QvJkjv3DERGdr6YwG8Zq |
3 |
|
This document appears to be a data sheet detailing stack emissions and surfactant rates for various vents, including actual and permitted emission levels, stack dimensions, and flow velocities, likely related to a semiworks application.
|
1953 |
AR226-2200
|
nzgvOZr5m4QpbKMzL44Zbjq1 |
2 |
|
This document appears to be a data report detailing emissions and operational parameters for various permit vent IDs, including stack dimensions, flow velocities, and estimated emissions for a semiworks application.
|
1953 |
AR226-2213
|
G6V91NmBXJ39OVwO27vrJ1oMV |
4 |
|
This document contains emission data and parameters related to a permit application (Permit Number 1881253DA) for a facility with multiple vent IDs, detailing flow rates, velocities, and potential emissions.
|
1953 |
AR226-2222
|
QjEReVxd5jw9o9eaeOVnd798 |
5 |
|
The document provides production and emission data for perfluorinated compounds, specifically detailing annual production figures and emission rates from various sources in 2003, with a total emission of 11,154,000 pounds.
|
1953 |
AR226-2261
|
x1216aM715az0OOOzE347GRv1 |
2 |
|
This document includes various permit and emission data related to stack emissions for multiple units, with specific reference to surfactant rates and particulate emissions as part of an Air Emissions Inventory.
|
1953 |
AR226-2298
|
9kZp3NRMOpw6EZnR0drgeQw7 |
7 |
|
This document contains emissions data and permit information for various vents associated with a semiworks application, detailing stack dimensions, flow rates, and emission rates for specific substances.
|
1953 |
AR226-2299
|
2RMQEk2axb711zkXb0Ox2ak2g |
5 |
|
The document provides background information on ammonium perfluorooctanoate (C-8), detailing its use as a dispersing agent in polymerization for Teflon and other fluoropolymers, its environmental release pathways, and contamination findings at the Washington Works site, including groundwater and soil contamination.
|
1950 |
AR226-2412
|
6R3DOZzKrKyrdo9xXYrLJk3Mo |
9 |
|
The document outlines Dupont Fluoroproducts' history of using Ammonium Perfluorooctanoate (C-8) since the 1950s, detailing storage, handling practices, a past spill incident, and the company's commitment to reducing C-8 emissions to very low levels.
|
1950 |
AR226-2470
|
a4n8B0M0kBp2Eyj5v2RK1ej2b |
2 |
|
The document provides emission information and potential-to-emit calculations for various vents associated with semiworks applications, specifically focusing on C-8 (which includes perfluorinated compounds like PFOA) and detailing the expected distribution and particulate emissions from the sampling apparatus.
|
1933 |
AR226-2226
|
5Dy6J8EKdjE3bpJeqgo2VajV4 |
4 |
|
The document is a study report by E. I. du Pont de Nemours and Company detailing a static acute 96-hour LC50 test of the substance H-19,173 on fathead minnows (Pimephales promelas), conducted under Good Laboratory Practice guidelines.
|
1932 |
AR226-2978
|
dgnn10MyeEKGM5NKygLDZ1eB |
14 |
|
The document reports that a study conducted by E. I. du Pont de Nemours and Company determined the LD50 of an unspecified substance, likely a perfluorinated compound, to be 1900 mg/kg in male rats, indicating it is slightly toxic when administered as a single oral dose.
|
1900 |
AR226-2921
|
ba7yL9mzyV3kv12OO7Dn45xRD |
4 |
|
The document contains test results for perfluorinated compounds (C-8) in Teflon copolymer production, indicating concentrations below detection limits (less than 0.0001 PPM) from various samples taken between 1978 and 1998.
|
— |
AR226-2126
|
gOgJO0egQ5wzzEJymNvg0769 |
43 |
|
This document outlines a laboratory method developed by E. I. du Pont de Nemours & Co. for the determination of perfluorooctanoic acid (PFOA) and ammonium perfluorooctanoate in aqueous solutions using gas chromatography, while also addressing safety considerations related to exposure to perfluorinated compounds.
|
— |
AR226-2729
|
1QBEevZG15akmO1b837QpjVrj |
11 |
|
This is an AEM laboratory report (No. 24-97) authored by John T. Gannon Jr., Ph.D., detailing a study on the biodegradability of C-8 substances conducted from January 21, 1997, to March 11, 1997, for an unspecified sponsor.
|
— |
AR226-2735
|
x1b004gpEDwmQVvgXLooJMq6m |
8 |
|
The document is an addendum to a closing report regarding the separation and proper disposal of C-8 contaminated process waste at DuPont, clarifying that initial recommendations were mistakenly listed as conclusions.
|
— |
AR226-2734
|
pB5K68D13oaqZkXb8RE9eGjEj |
10 |
|
The Little Hocking Water Association, Inc. reports high levels of PFOA (C8) in its water supply, with measurements reaching up to 18.6 ppb, and provides blood sampling data from residents due to health concerns linked to PFOA exposure from the nearby DuPont Washington Works Plant.
|
— |
AR226-2740
|
7M41ZxkMNwv7yOw3d8v025ErV |
4 |
|
This document contains preliminary modeling results and environmental assessments related to DuPont's operations, indicating that with proper design parameters, off-site concentrations of fluorochemicals will remain below regulatory guidelines, while also detailing measures to minimize emissions and community exposure.
|
— |
AR226-2134
|
MGxJX9ZZdnKjJ6gY5nvXLbGNa |
6 |
|
Unreadable document.
|
— |
AR226-2135
|
g2NRjL1enrZ54MZnzM9epMpJL |
4 |
|
The document outlines exposure limits for C-8 (PFOA) in air and drinking water, indicating a public exposure guideline of 5.0 parts per billion and detailing off-plant emissions from Washington Works, along with environmental programs aimed at reducing air emissions and eliminating supernate pond disposal.
|
— |
AR226-2143
|
O3VNO1jjGZB08DwRVkaw4Qp7w |
3 |
|
The document details off-plant emissions of C-8 (PFOA) from the Washington Works facility, reporting water and air emissions over several years and indicating ongoing environmental programs and monitoring efforts related to C-8 contamination.
|
— |
AR226-2144
|
NG1GEvqydKQ6zgy30zz4kkyrV |
5 |
|
The document discusses the estimation of air emissions related to C-8 (PFOA) from a DuPont facility, indicating that a stack height of 95.1 feet is required to meet the 24-hour concentration goal of 0.3 µg/rf, but a height of 49.2 feet is currently planned.
|
— |
AR226-2145
|
VJaxdMg0woRz0nLXqaRykRaVZ |
2 |
|
Unreadable document.
|
— |
AR226-2148
|
MGG6KBLbpKx5M379G14dwzrzV |
1 |
|
The document contains environmental and toxicology questions from 3M regarding the analysis of perfluorinated compounds, specifically asking about soil and groundwater characteristics, total organic fluorine concentrations, and the implications of a sub-chronic monkey study involving APFO (PFOA).
|
— |
AR226-2149
|
LpR7odx9ErnoQYzBMJO7XqXwq |
3 |
|
The document discusses the recovery of hazardous waste material containing C-8 (PFOA) from the FEP sump, detailing laboratory procedures that have reduced C-8 levels from approximately 300 ppm to 1-10 ppm through drying, while indicating the need for further testing to establish effective commercial processing conditions.
|
— |
AR226-2150
|
9d28qdYOVapG0g1qzX1eknze |
2 |
|
The document outlines atmospheric modeling studies and compliance strategies for C-8 (PFOA) emissions from various production sites, indicating annual exposure levels near Washington Works, Dordrecht, and Shimizu, while detailing commitments to adhere to regulatory limits and reduce emissions.
|
— |
AR226-2146
|
J39VVxJ491xmLMJ4jvzzzBN4K |
26 |
|
The document outlines the design parameters necessary to ensure that the average daily concentration of PFOA off-site remains below the CEG of 0.3 pg/m³, utilizing the Industrial Source Complex model and indicating that with proper design, emissions could be reduced to 10-30% of the CEG without abatement.
|
— |
AR226-2152
|
O1rGe5V11YmLxDk34naJ03aE1 |
7 |
|
This document appears to be a permit application or report detailing emissions data for various vents, including stack dimensions, flow rates, and estimated actual emissions compared to permitted allowable emissions.
|
— |
AR226-2164
|
1JVZgNVNz406KQ73OZV1Om0q |
2 |
|
Unreadable document.
|
— |
AR226-2167
|
RgrOmEkGg7Xk24ajY6ENg9RV |
4 |
|
This document contains a list of building identification numbers, names, and corresponding coordinates for multiple buildings, but lacks analytical content.
|
— |
AR226-2172
|
37pnbQr1ErzrEmLxwm1Oaj6a |
17 |
|
The document details a site inspection at DuPont's Washington Works regarding the handling and production of C8 (PFOA), noting its current use as a 20% solution due to health risks associated with powder handling, increasing costs, and potential manufacturing changes due to supply issues.
|
— |
AR226-2177
|
5bQnvZvmVRrEJoB34XYjVdNBz |
2 |
|
Unreadable document.
|
— |
AR226-2191
|
D60dMYM0wR67zbw0dzMk273Q |
1 |
|
This document appears to be a data log detailing wind speed, temperature, and mixing class measurements taken over several hours on November 12 and 13, 1996, though the source and specific study context are not provided.
|
— |
AR226-2202
|
a42YxEr9nYYy10NmgqxKZ2ZoX |
2 |
|
This document contains a particle size analysis report for Fine Powder C-8 Scrubber.
|
— |
AR226-2206
|
zzJg2QkdnODQMeKoGB5wZ73Mm |
1 |
|
This document contains emission data and potential-to-emit calculations for various parameters related to a Severn Trent Laboratories analysis, including specific vent flow rates and velocities.
|
— |
AR226-2219
|
93NbN6wZ82av4opKrrNGKz83L |
3 |
|
This document contains emission information and analytical data related to C-8 sampling, including potential-to-emit calculations and distribution results from various sampling apparatuses.
|
— |
AR226-2228
|
2RqJ4mGaN2vdV1749zL4oyp77 |
5 |
|
This document contains emission information and analytical data related to C-8 sampling, including potential-to-emit calculations and distribution metrics for various sample apparatus, but lacks a clear report structure.
|
— |
AR226-2229
|
v63X89p9oJpw59nXeew0DL5kY |
6 |
|
The document discusses the estimation of the Henry's Law constant for C-8 (a perfluorinated compound) in water, emphasizing its applicability at low concentrations and the influence of micelle formation on its validity.
|
— |
AR226-2236
|
3Jaw94aED5yVd5720b6p8XV8D |
2 |
|
The document presents a phase diagram for C-8 (ammonium perfluorooctanoate, NH4PFO), detailing its solid and vapor phases as a function of temperature and pressure, with decomposition occurring between 150°C and 165°C, based on experimental data from 3M and DuPont.
|
— |
AR226-2239
|
9JxkdkxE8DDm9kVmN5o5Ej5z7 |
2 |
|
The document discusses the estimation techniques for particle scavenging coefficients related to C-8 (PFOA) in atmospheric aerosol particles, detailing various mechanisms of particle scavenging during precipitation events.
|
— |
AR226-2238
|
2R5e2rmYKk2J5L8Ey8BppLD25 |
2 |
|
This document appears to contain analytical data on particulate and vapor deposition concentrations, including coordinates and various concentration measurements, but lacks a clear identification of the lab or study context.
|
— |
AR226-2244
|
480qmjE2JQ02NoRyEZQVb9wG |
4 |
|
This document presents deposition modeling results, including particulate and vapor deposition concentrations, with specific coordinates and total deposition values for an unspecified study.
|
— |
AR226-2245
|
KGV3RkygevykEXLrMaRddwa6X |
4 |
|
This document presents deposition modeling results, including particulate and vapor concentrations, with specific coordinates and values for wet and dry deposition.
|
— |
AR226-2248
|
Rjnd8LaneB8y63ex9VLRg6aNz |
4 |
|
This document appears to present deposition data for various locations, including Little Hocking, Lake Washington, and the Ohio River, detailing particulate and vapor phase deposition metrics.
|
— |
AR226-2250
|
a0MyryLpwJjGG3K563RaJ6zB |
2 |
|
The document presents an overview of fluoropolymers, specifically highlighting their unique properties, applications across various industries, and the societal benefits associated with their use, as discussed by DuPont in a presentation to the State of Ohio Environmental Agency.
|
— |
AR226-2254
|
O3jmEkNpDxZgDNZm3QedbwxnX |
59 |
|
This document appears to be a data sheet related to emissions from various stacks, detailing parameters such as stack diameters, heights, and estimated actual emissions for a semiworks application.
|
— |
AR226-2263
|
vBz4oOJQr9GMmv3wyV3VwKYjq |
2 |
|
Unreadable document.
|
— |
AR226-2265
|
ZJND253O2wGN1eMr7NdoYjnZZ |
3 |
|
The document discusses coordination between the West Virginia Department of Environmental Protection and DuPont regarding air quality modeling for C8 (PFOA), including a scheduled meeting to review modeling protocols and input parameters, with no changes reported since the last submission.
|
— |
AR226-2274
|
XQ954gVnvbYzXXoRRK83Be7K |
1 |
|
This document appears to be a draft attorney work product containing figures related to maximum ground-level concentrations and actual emissions annual average vapor concentrations, dated April 16, 2002.
|
— |
AR226-2276
|
LpBXRkrN1zd7Y7OB2x5O4K385 |
4 |
|
The document outlines the modeling methodology and inputs used by DuPont to assess air quality impacts related to PFOA emissions, following EPA guidelines and utilizing the ISC3 model and BPIP for building downwash effects.
|
— |
AR226-2279
|
MGXKKEjrQMKQmqk2g2ebX37qj |
13 |
|
Unreadable document.
|
— |
AR226-2284
|
2JXV8JyYOa4MmbGmDgrQgoo95 |
1 |
|
The document discusses communication between DuPont representatives regarding the use of rainfall rate data from Parkersburg airport for air emissions modeling related to PFOA, following discussions with the Ohio EPA and DAQ.
|
— |
AR226-2287
|
RJLD2Kz0aJKgEVrY0GoVd9kXv |
1 |
|
This document appears to be an engineering computation sheet with various calculations and notes, but the content is largely illegible due to poor OCR quality.
|
— |
AR226-2303
|
0QgNBGma6MedGv5EwJgrEj9V |
6 |
|
This document contains calculations for estimating intake of contaminants based on RAGS (Superfund) guidance, detailing parameters such as chemical concentration in water, fish, and air, along with ingestion rates and exposure factors for different age groups.
|
— |
AR226-2304
|
RpeN6nD7rG73GN9xOn71RDOn7 |
10 |
|
The document outlines the methodology and costs associated with air dispersion modeling for perfluorinated compounds, specifically using the EPA's ISCST3 model to assess emissions from DuPont facilities, including data requirements and interpretation of concentration results.
|
— |
AR226-2307
|
Kz7n9np0MXLzVM8GzX10D8K8N |
8 |
|
The document discusses modeling predictions for short-term impacts of C8 (PFOA) emissions, indicating that maximum concentrations are expected to occur within the plant's fenceline, contrary to Ohio EPA's belief that they occur in high terrain across the river.
|
— |
AR226-2315
|
k3wKBOOR5X2ZDMYn0pE6bJ1E |
1 |
|
This is an email from Charles J. Zarzecki to Catherine A. Barton discussing the lack of proper meteorological data for Parkersburg needed to run AERMOD, and suggesting that Trinity could process the data for a fee.
|
— |
AR226-2314
|
rB6rE9o1G3NvNrZZGbVjmkkp7 |
1 |
|
The document outlines an air emissions modeling plan for calculating ambient ground-level air concentrations of C8 emissions from the Chambers Works site, utilizing the ISC3 model and incorporating building downwash effects.
|
— |
AR226-2327
|
evd2gpN34MgByboGbD1VdjZzy |
1 |
|
The document discusses options for minimizing model uncertainty in air dispersion modeling related to PFOA, highlighting the need for monitoring data over modeling and suggesting a cost-effective approach using the EPA's AERMOD model for accurate assessments.
|
— |
AR226-2331
|
GK980jxJZEYZNGLgdzvZ6dxdV |
2 |
|
The document provides emission data for PFOA from various scrubbers at the D Plant and E Plant, detailing specific emission rates and contributions from different sources.
|
— |
AR226-2333
|
RaZnB1k8jNgoRNEJYN9mZZDx7 |
2 |
|
The document provides emission rates for perfluorinated compounds (C8) from various scrubbers at different plants, indicating specific flow rates and temperatures associated with the emissions.
|
— |
AR226-2334
|
LpZwLEQO8k7NVwv8yxamV1jyq |
1 |
|
This is a document listing contributors and topics related to air permitting for sources with APFO, including sections on dispersion modeling and permit strategy.
|
— |
AR226-2337
|
0B7a4oqd9Zq4KrQL4mKn4N7k |
2 |
|
The document outlines the EPA's data needs for monitoring PFOA in air and soil to quantify contamination levels and extent, emphasizing the necessity for additional data on biota and modeling of air contamination related to fluoropolymer manufacturing.
|
— |
AR226-2340
|
pmLeJxD0dLo2w3kLZg1aQ7E37 |
4 |
|
The document outlines the EPA's data needs for monitoring PFOA releases from manufacturing facilities, emphasizing the need for information on concentrations in air, water, soil, and biota, as well as proposals for continued monitoring and additional sampling to assess off-site contamination.
|
— |
AR226-2341
|
xE4jkw1LxNrEDaOojg6EwLV0 |
4 |
|
This is a letterhead cover page from URS, with no analytical content retained in the OCR.
|
— |
AR226-2362
|
xjDMJv64woKm0L8MMOX8QbR26 |
2 |
|
The document is a guidance document developed by the Fluoropolymer Manufacturers Group intended to provide general guidelines for detecting and quantifying fluoropolymer polymerization aids in various matrices, emphasizing that it does not guarantee compliance with regulations or standards.
|
— |
AR226-2363
|
Em4zxg09garJE4R5pEn0Yza4 |
22 |
|
This is a draft document outlining the human health and ecological risk assessment for C-8 alternatives, including hazard identification, exposure analysis, and risk characterization, with associated costs and timelines.
|
— |
AR226-2364
|
a4MdpeKeyOmkmaRqpVy9rROEN |
2 |
|
The document provides emission rate data for various emission points related to perfluorinated compounds, including PFOA, detailing specific rates, stack heights, temperatures, and velocities.
|
— |
AR226-2367
|
3N8ygn8yDwJaM01pLnJXNVK6y |
10 |
|
This document appears to contain a series of numerical coordinates or data points, but lacks any identifiable analytical content or context.
|
— |
AR226-2368
|
Vpy1gmN15MVMYdY8kVnED39q |
5 |
|
This is a document related to air emissions modeling, specifically focusing on refining emissions estimates and repeat modeling for ambient air.
|
— |
AR226-2369
|
99xZ7oVxEOq7kORd7MJYR7Lq7 |
8 |
|
This document appears to contain calculations related to chemical loading and groundwater response over several years, indicating a lag between application rates and groundwater concentration changes.
|
— |
AR226-2370
|
M4rkgONQy3bYq5Q0nbJyj3yek |
2 |
|
This document contains emission data for multiple points, detailing stack rates, heights, temperatures, velocities, and diameters, associated with various job numbers.
|
— |
AR226-2371
|
vBQMbyoDewRJpYB7MR6jwjyG8 |
10 |
|
Unreadable document.
|
— |
AR226-2373
|
5Lg7NXwzXvaOQz2KV6wG3G1yV |
1 |
|
The document discusses the varying levels of C-8 (PFOA) detected in samples from a wet finishing system at Dordrecht, with specific results indicating significant fluctuations in concentration over a two-hour sampling period, and questions the impact of moisture content on these variations.
|
— |
AR226-2374
|
G67gqxY1JREObEMvgEV8yMEQm |
2 |
|
Unreadable document.
|
— |
AR226-2375
|
EmNg5R5yRYQzDQqj9Z1R53mnL |
2 |
|
This document appears to be a computation sheet detailing assumptions and calculations related to air emission rates and deposition loads to the Cape Fear River, including average conditions and concentration estimates.
|
— |
AR226-2372
|
kpyGx51rJbVbxzvX9yLzJ48b |
46 |
|
This document outlines a method for determining the equivalent C-9 dispersing agent in FEP dispersion using titration with cetyltrimethylammonium bromide, detailing the procedure, safety considerations, and calculations involved.
|
— |
AR226-2376
|
KJddXbxKxKzbOdBqMM4r0wB2X |
2 |
|
The document reports on tests conducted by E.I. du Pont de Nemours & Company regarding the levels of extractables from high solids dispersion resins, specifically TD-37X, and confirms that the results comply with the specified limits for PFOA and other extractables.
|
— |
AR226-2377
|
x5X9mVNJBZe3E6D7VVzDk0G3m |
2 |
|
The document outlines the environmental status and health monitoring related to C-8 (PFOA) exposure among employees, detailing findings of elevated organic fluorine levels in blood samples, the establishment of provisional acceptable exposure limits, and the lack of conclusive evidence of health problems associated with C-8 exposure, while also noting that DuPont was informed of potential birth defects linked to C-8 in animal studies
|
— |
AR226-2381
|
OzLxL724N1YOR82gBGrpO2egw |
14 |
|
Unreadable document.
|
— |
AR226-2382
|
mX99BMZBv7OzD06BbBnM84GQ |
1 |
|
The document compares PFOA levels in water samples taken on March 13, 1984, and June 4, 1984, from locations including Little Hocking, with the June samples showing a decrease to not detected levels.
|
— |
AR226-2384
|
mmqE9QppGNXzvv8r6Rn1qkBdO |
1 |
|
Unreadable document.
|
— |
AR226-2394
|
rpLg6kY29qXQek5gn2DZ17q0 |
1 |
|
The document outlines the status and goals of the C-8 (PFOA) Reduction and Control Programs, emphasizing the need to reduce public exposure through engineering controls and protective equipment, while reporting that PFOA is not teratogenic, embryotoxic, or mutagenic, and has a moderate toxicity level.
|
— |
AR226-2393
|
LggepOBEK1pz8716ddmK41VYQ |
26 |
|
This memorandum outlines a routine groundwater testing program for C8 (PFOA) to be conducted by ESL, with samples taken every six months from various water systems and ponds, emphasizing improved sampling methods.
|
— |
AR226-2395
|
Rp10xQ64ybraXg1V2YOGYRv6v |
1 |
|
The document details emissions and environmental monitoring data related to C-8 (PFOA) from the Washington Works facility, including off-plant emissions, levels in drinking water, and planned environmental programs for remediation and monitoring.
|
— |
AR226-2399
|
9Jd930kX4X7MZ8ekpbVJdGBDp |
5 |
|
The memorandum discusses test results for C8 (likely referring to PFOA or PFOS) in water samples from Letart upper and lower ponds, indicating varying concentrations from 0.5 to 3.6.
|
— |
AR226-2408
|
6be2XYZON5KMZkj2XD23dYG3d |
1 |
|
The interoffice memorandum discusses test results for C-8 (likely PFOA or PFOS) in water samples from Letart upper and lower ponds, indicating concentrations of 0.4 to 1.5 ppb across various dates in 1990.
|
— |
AR226-2409
|
NedreejqgVd8j0qXNwM7kqxOy |
1 |
|
The memorandum discusses test results for C-8 (PFOA) in water samples from Letart Upper and Lower Ponds, indicating varying concentrations of PFOA, with a notable level of 16 ppb detected in Test Well #27.
|
— |
AR226-2410
|
dQgeoX1p0DnQBYMm289kOLNKR |
1 |
|
This is a DuPont transmittal memo regarding perfluorooctanoic acid, identified by code number V 2408000, with no analytical content retained in the OCR.
|
— |
AR226-2413
|
VJEKKr8gG3LONx577j4gVO7pp |
1 |
|
This document appears to be a summary of water sampling results from various locations, including home taps and wells, with analytical data indicating concentrations of contaminants over multiple dates.
|
— |
AR226-2414
|
wg7NXd2pVzd5JjR8Mjm9qb3Nd |
3 |
|
The document presents water sample results for C-8 (PFOA) collected from various wells and the Ohio River, comparing findings from Experimental Station and CH2MHILL, indicating significant levels of PFOA in some samples while others were not detected.
|
— |
AR226-2415
|
XRBZr0a2pD59q6pOVMOvwn5EG |
1 |
|
This document appears to be a summary of water sample results from various locations, including wells and plant sites, with dates of sampling and corresponding analytical results, some of which are marked as awaiting results or suspect due to analytical technique accuracy.
|
— |
AR226-2417
|
GmeLy3MO4ZkY8QQrpLR4Zd2e4 |
14 |
|
Unreadable document.
|
— |
AR226-2419
|
M4XkG9LJRRwYaDDDxd1RG8k69 |
1 |
|
The document presents results from river and well water samples taken by Dan Weber, indicating the presence of PFOA at varying concentrations, with non-detectable levels reported in several samples.
|
— |
AR226-2421
|
ZJeggRnBQg8j148Vepjzmndmd |
1 |
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The document summarizes groundwater monitoring results from Letart Landfill in 1992, reporting FC-143 (ammonium perfluorooctanoate) concentrations in various wells, with results ranging from 0.2 to 1.3 µg/l, while other organic compounds were detected at higher levels.
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AR226-2422
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bZzON34pD4bn4mGL9Ez2DQ36 |
2 |
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The document outlines annual exposure estimates for perfluorooctanoic acid (C-8 or PFOA) at various production sites, including Washington Works, Dordrecht, and Shimizu, while detailing compliance measures with federal and state regulations regarding C-8 emissions and employee exposure limits.
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AR226-2423
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2JweZRkGK72vprERD83wByawR |
26 |
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This document summarizes groundwater monitoring analytical results for FC-143 (perfluorooctanoate ionic surfactant) at the Letart Landfill, indicating various concentrations detected at multiple sampling locations between January and November 1991.
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AR226-2424
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KYyapa6yB9aNyXJnq2GNavq6 |
1 |
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The document presents monitoring results for the discharge of ammonium perfluorooctanoate (FC-143) and other volatile organic compounds (VOCs) from the IETART Landfill, indicating varying concentrations over time, with some results below detection limits.
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AR226-2427
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KyzqZdzpL1ZDE0Grzz4aVBZ0 |
1 |
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The document is a letter from DuPont's Environmental Manager, W. M. Stewart, to Dr. L. Eli McCoy of the WV Division of Environmental Protection, summarizing agreements on the conceptual closure plan for DuPont's Letart Landfill and indicating that a closure permit application will be submitted in July 1993.
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AR226-2429
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JrEZyke2rYMnDxzqXBrg4d36O |
4 |
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The memorandum discusses recent sampling results of C-8 (PFOA) in the drinking water at Washington Works, revealing levels between 0.1 and 3.3 parts per billion, which are higher than expected but not considered a health threat to employees, while noting that further investigation will be conducted by the environmental group and C-8 team.
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AR226-2431
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NnzEqOp9R2vew9EeO0Gj0Zgg |
3 |