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Page 9 of 18 — 1,728 documents
Title / Summary Year AR226 Docket Hash ID Pages
The document provides a voluntary usage and exposure information profile for Ammonium Perfluorooctanoate (APFO), detailing its use by E. I. du Pont de Nemours and Company as a reaction aid in the production of polytetrafluoroethylene (PTFE) at their Washington Works site, along with information on waste disposal and recovery processes. AR226-2049 znJ0kmGbDea09j6ExyDkq796 11
This document contains stack data for emissions measured in micrograms per cubic foot at Washington Works for June 1977, detailing emission rates and stack identification. AR226-2050 DMNyYGK0MK5BR07O965Ox0L9d 5
Unreadable document. AR226-2052 QMLxGe6Z8vk8ogdeDwJGJD6R7 2
Unreadable document. AR226-2053 RaQ8yknjOjNvXXRpzojo0o7JX 2
Empty document. AR226-2055 wgNR3GZJ70XbpZwg9Ok7XaMr6 2
Unreadable document. AR226-2054 EvkMNROGOJBdb2k3k8Lg5xxEx 2
Unreadable document. AR226-2056 3eBKvDknQ09waErr6mZ1ZOOD 3
Unreadable document. AR226-2058 wgR6eD0mJ7j0BwVGe32bMn4vE 2
The document presents personal air monitoring data for PFOA levels at the Washington Works facility, indicating various job roles and their corresponding mean and maximum concentrations, with several instances requiring more data for conclusive assessment. AR226-2057 zov7xxOx696e7xRm2NanKyDV6 2
Unreadable document. AR226-2059 06roj0ogLm7kkJbXv1xRDk94R 2
This document appears to be a laboratory report detailing analytical results related to exposure limits and sample data, including thresholds and resampling criteria for a project identified as AR226-2062. AR226-2062 ypNd0KkZJ1J3vXw1wjnKr9Mzn 2
This document contains personal air monitoring data for "TEFLON" polymers, detailing sample results in ppb and corresponding sample dates, though much of the text is obscured or unclear. AR226-2060 rz1GVGnQDmQX94z1V54ZVqLV 7
Unreadable document. AR226-2063 NebNXR7wqn8rjKx7e402gQRbQ 3
This document appears to be a lab report detailing resampling results and exposure limits for a workplace analysis, with specific thresholds and acceptable levels noted, but the text is largely obscured and fragmented. AR226-2061 x56w3DqbLp6Mnq7MdqLOwDd0 5
The document discusses ammonium perfluorooctanoate (C8), produced by 3M Company, detailing its health effects, including irritant properties and liver injury risks, while noting that it is not a teratogen, embryotoxic, or mutagen, and has been used as a dispersing agent in polymerization since the late 1950s. AR226-2068 Bvy37DGVXJgXLx0x5N17a98xm 17
This is a letterhead cover page from an unspecified laboratory, with no analytical content retained in the OCR. AR226-2073 Ed2b906b53NEvREO41qG0OaEN 2
This is a letterhead cover page from an unspecified source, with no analytical content retained in the OCR. AR226-2072 82Xda9KOYOKryJJVLXXg1ENjd 2
This is a letterhead cover page from an unspecified laboratory, with no analytical content retained in the OCR. AR226-2074 QkX1edMBb8R2vjoLBwgG1pRdR 2
This document appears to be a lab report cover sheet related to analytical data for an unspecified project, detailing sample names and various measurements, but lacks clear analytical content due to poor OCR quality. AR226-2079 Y9yGB4dJpjb2Je8YZ52vOxJJV 3
The document is an interoffice memorandum detailing C-8 (PFOA) sampling conducted in fine powder since January 1994, indicating that area sampling is performed on a request basis and noting specific sampling frequencies for various Teflon areas. AR226-2080 km7wE8NENXZ1n1nJZnk7LLdG0 3
The document discusses a conversation regarding air and blood monitoring for C-8 (PFOA) at the DuPont Spruance facility, highlighting a lack of recent air monitoring and the possibility of voluntary blood testing for employees. AR226-2086 GKkmDGrZE6D3XyppQ4dO9Objx 1
Unreadable document. AR226-2088 ByGQp2QOZv02a86Xw7N6JD2go 1
This document appears to be a lab report detailing air sample results from various control rooms, with specific sample numbers and dates of analysis, although the text is heavily distorted and fragmented. AR226-2087 evZrNmBaov78b0dGwDmZbkjwq 14
The document outlines 3M's Environmental Program objectives and plans for assessing the environmental fate and effects of fluorochemicals, specifically focusing on PFOA and PFOS, including strategies for minimizing their release and characterizing associated risks. AR226-0627 qoxmwq2KVV7y8k1dQ6rjgM4x 19
Unreadable document. AR226-0638 OzBYw6Bbkeg0KgqQLzEEJvo8v 1
This interim report from 3M Company discusses the determination of serum half-lives for PFOS and PFOA in retired fluorochemical production employees, indicating that the serum half-life of PFOS may be significantly lower than previously estimated, while PFOA's half-life appears to be approximately one year. AR226-0645 daLMvZM6jDQXDVvd467ey6KY9 10
The document is a technical report from 3M detailing a biodegradation study of the fluorochemical FC-143, evaluating its susceptibility to aerobic microbial degradation using procedures modeled after the Soap and Detergent Association's biodegradability test. AR226-1784 4QyMNNEmMgQGd9zq0EYQ8yY9a 17
The document discusses the biodegradation of C-8 (PFOA) in groundwater at the E. I. du Pont de Nemours and Company Washington Works plant, presenting evidence of concentration reduction, contaminant mass loss, and microbiological data supporting degradation rates. AR226-1798 VG57JkRM4O6npoyrnRQ94a684 19
This report from 3M identifies metabolites, including PFOS and FOSA, in the liver of rats dosed with Adipate, indicating significant metabolism of the polymer as evidenced by higher concentrations of these fluorochemicals in the liver compared to the original dose. AR226-1810 2Rbd8owb7Od1D0KOX67aLNyn5 10
This document appears to be a laboratory report detailing calibration and analytical results for various samples, including measurements of C8 PPM and peak heights, though the specific context and study are not clearly identified. AR226-2090 RprELvgpL04yBjNGnnQ63zvZ8 5
The document summarizes an extensive sampling project for C-8 (perfluorooctanoic acid, PFOA) in air and on surfaces conducted by Environmental Lab LSE in response to previous blood testing results, focusing on areas with abnormal C-8 blood levels. AR226-2083 dnmneKOYeEnBBX93voKbk1Nd9 41
The document summarizes air sampling results and blood monitoring related to C-8 (PFOA) exposure at a Washington facility, detailing personal and area sample concentrations over several years and highlighting the need for monitoring in specific job roles. AR226-2091 MMok06nyz53X9Dnm7Jkd6yMJL 4
The document presents industrial hygiene test results for PFOA (C-8/FC-143) concentrations in various locations and employee samples from a Teflon production facility, indicating multiple instances of exposure with varying concentration levels. AR226-2092 0gKRK2VX03nmzQxkxG28pEZ6m 9
The document provides industrial hygiene sampling data for PFOA (C-8/FC-143) concentrations in various locations within a facility, indicating multiple instances of elevated levels exceeding action levels during the specified dates. AR226-2093 qa9Yg6g356qG2K00ey08gap9M 14
The document presents industrial hygiene test results for PFOA (C-8/FC-143) concentrations at various locations within a Teflon production facility, indicating several instances of exceedance above the action level during the sampling period from January to December 1990. AR226-2094 jgargybn3KX7BamXd0rvDG1gR 4
The document presents industrial hygiene test results for perfluorinated compounds, specifically C-8/FC-143, from various locations and dates within a Teflon production facility, indicating concentration levels and action levels for employee exposure. AR226-2095 vBwOmodNJ9x3gd2KoQzQ93yGR 4
The document presents industrial hygiene test results for PFOA concentrations in various samples from a Teflon production facility, indicating levels ranging from below detection to 0.07 MPB, with some samples exceeding the action level of 0.08 MPB. AR226-2096 RjpE1zLVnKmGLO18d8Myv9pYz 6
The document presents industrial hygiene test results for perfluorinated compounds (C-8/FC-143) at Pere Chemical from January 1, 1996, to December 31, 1998, indicating various employee exposure levels with concentrations exceeding action levels in some instances. AR226-2098 MMGoDwy4XVQkqmBkozbz9ZB3y 8
The document contains industrial hygiene sampling data for perfluorinated compounds, specifically C-8/FC-143, collected from various dates in 1997, indicating concentrations and employee exposure levels. AR226-2097 vV4ZVV8bEQ8EDE8oroe7O3ex6 12
The document presents industrial hygiene test results from 1978 indicating that concentrations of C-8 (a perfluorinated compound related to Teflon production) were below detectable levels in various locations within the production facility. AR226-2105 8VeK815RR7BLxLYy1EdnQ8NwZ 1
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