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CD 21 — AR226-2111-3000

EPA administrative record segment: CD-21--AR226-2111-3000 (887 documents).

Page 4 of 9 — 887 documents
Title / Summary Year AR226 Docket Hash ID Pages
This document is a letter from DuPont to the EPA summarizing the use and exposure of ammonium perfluorooctanoate (APFO) in their fluoropolymer manufacturing processes, emphasizing that DuPont does not manufacture APFO, that most of it is removed from products before sale, and that worker exposure levels are significantly below the ACGIH threshold limit value. 2000 AR226-2556 712gqmJ04rKjv00aLVeom5ya8 11
The memo discusses a meeting regarding DuPont's groundwater monitoring and contamination investigation at the Washington Works facility, highlighting concerns about the lack of monitoring wells in the manufacturing area to assess the impacts of past PFOA-related manufacturing processes. 2000 AR226-2567 jyMxkey337KJ79J8o9mRQOyr2 2
The document reports the analysis of water samples for FC-143 (a perfluorinated compound) collected by Nemours & Co., with a detected concentration of 0.029 µg/L and a noted detection limit of 0.052 µg/L. 1999 AR226-2464 gdmD22RGJe7aLjkZpkLg4vbN 1
The document is a meeting notice regarding a strategy session for the Washington Works RFI Team to review preliminary risk assessment results related to C-8 (PFOA) and to develop a risk-based cleanup level, emphasizing the need for business buy-in before submitting findings to the EPA. 1999 AR226-2547 zQR00bJGmBDdpk6Z6zL0Eodgg 1
The document outlines the results of a RCRA Facility Investigation at the DuPont Washington Works site, emphasizing the site's characterization and monitoring efforts related to environmental protection, particularly concerning perfluorinated compounds like PFOA and PFOS. 1999 AR226-2550 6BEb8pkEvZX4VJ8kDQVX105Ed 33
The document is a cover letter from DuPont Washington Works submitting a RCRA Facility Investigation Report regarding findings related to hazardous waste management, including potential contamination from perfluorinated compounds, to the U.S. EPA for review and comment. 1999 AR226-2548 q3Bq4GBpkbqj9Q9DXMJOZnY1n 150
The document discusses the contamination of water samples from Ranney well and other wells used by E.I. du Pont de Nemours and Company, indicating the presence of various pollutants, including carbon tetrachloride and chloroform, which could impact water quality standards and are discharged into the Ohio River without adequate treatment. 1999 AR226-2566 YGD5QR3n6VyrDE1kD2a5JGdBk 2
This document discusses the estimation of vapor scavenging coefficients for C-8 (which includes PFOA and PFOS) based on rain event characteristics, emphasizing the assumptions of irreversible absorption into rain droplets and the importance of considering a range of droplet sizes for accurate calculations. 1998 AR226-2233 3ebpBBY20DNn4XpmzXGyzn70y 3
This document discusses the estimation of vapor scavenging coefficients for C-8 (likely referring to perfluorooctanoic acid, PFOA) based on rain event characteristics, emphasizing the assumptions made regarding its absorption into rain droplets and the calculation methods used for determining the mass transfer coefficient. 1998 AR226-2240 OEm0YeE6BzNMwR3BVdLz93MZw 3
The document outlines a meeting agenda regarding the management of C-8 products, specifically focusing on the status of various projects related to perfluorooctanoic acid (PFOA) and the progress of analytical testing and recovery technologies. 1998 AR226-2365 YDzg0oK6Bv70Mg4kDgnQONwdD 12
The document provides analytical results for PFOA concentrations from various sampling locations, including Dry Run Landfill and LeIVtart Landfill, with notable findings of 24,000 ug/L in the Lower Pond at LeIVtart Landfill on May 28, 1998. 1998 AR226-2451 MM8vz0p6ZNnYaYqvmGzwoJx89 2
The memorandum discusses the analysis of water samples for potassium content, indicating issues encountered with sample 5-P-15 due to contamination with Teflon, which resulted in significant equipment damage and additional labor costs. 1998 AR226-2454 yk6JO5mJkGG5OyK2jova1rRdE 1
The document is an email from Roger J. Zipfel discussing the analytical results for perfluorooctanoic acid (PFOA) in whole blood, including details about the testing method and expressing interest in salvaging waste Teflon material from the Dordrecht facility. 1998 AR226-2466 BRn7YOpaB7OkG4xEVkwDMxOvw 1
The document provides results from environmental sampling of perfluorinated compounds, specifically FC-143, at various landfill sites, detailing concentrations found in leachate and pond samples collected by DuPont in June 1998. 1998 AR226-2467 ZJ2jXGEMdwZp6RqkB9vbdX3a7 11
This document contains analytical results for FC-143 from various sampling locations at the Washington Works site, with data recorded across multiple dates. 1998 AR226-2493 xJqQdKdza5kqvMwNGn6zn880 3
The document is a letter from the EPA approving E.I. duPont's RCRA Facility Investigation Work Plan for its Washington, West Virginia facility, confirming that the company satisfactorily responded to a Notice of Deficiency regarding the investigation of perfluorinated compounds. 1998 AR226-2546 RJn3rnDb5y2n9p10Dj00aq3n8 1
The document reports on a dermal sensitization test using the Buehler method conducted by DuPont to evaluate the sensitization potential of a test substance, adhering to U.S. EPA Good Laboratory Practice Standards with noted exceptions regarding the analysis of treatment solutions. 1998 AR226-2804 O1EQpLBO13oB8kngqrxKdoR3e 25
The document outlines a draft plan for assessing human health and ecological risks associated with C-8 (PFOA), including hazard identification, risk characterization, and exposure analysis, with estimated costs and timelines for various studies and assessments. 1997 AR226-2366 N5oG1pO4rYwXqmJwn61gODNy 19
The memorandum discusses the results of demineralized water analyses from Teflon production, indicating no detectable contaminants in the samples, while suggesting potential atmospheric contamination and the need for further sampling of effluent from the tanks. 1997 AR226-2439 2jaQyg8yXM2dre1oZrmj03yB5 2
The document discusses the analysis of C8 (perfluorooctanoic acid, PFOA) levels in dispersion samples P27-1047 and P27-1048, revealing significantly higher concentrations than U.S. results, and raises concerns about potential C8 loss during FEP polymerization processes. 1997 AR226-2441 8RrZEmD7jDZgB2LYz4mO6VXNe 2
3M has confirmed an agreement to provide analytical testing services for up to 22 soil and water samples from DuPont's Parkersburg, West Virginia facility to determine the presence and level of APFO (C8 Acid), with results to be reported within 45 days at no charge. 1997 AR226-2444 bxNz2534M4Ym3yeVy2ejM7DD 2
3M confirmed an agreement to provide analytical testing services for up to 22 soil and water samples from DuPont's Parkersburg, West Virginia facility to determine the presence and level of APFO (C8 Acid), with results to be reported within 45 days at no charge. 1997 AR226-2443 65MmGpezN5ookeg1BE5n8oVzg 4
The memorandum outlines action items from a meeting regarding C-8 (perfluorooctanoic acid, PFOA) sampling, including data analysis, exposure risk reduction measures, and the implementation of safety protocols at Fluoroproducts. 1997 AR226-2448 J3xpNBj3EOaVOr43V49g8Lwqa 1
The document discusses concerns regarding C-8 (PFOA) levels in plant drinking water at DuPont, concluding that the exposure from drinking water is minimal and does not significantly affect worker safety compared to air exposure limits. 1997 AR226-2456 ZKnR8adM6ngLRmK3v26jxGmV 2
This is a letter from W. M. Stewart, an Environmental Control Consultant, to Mary F. Beck at the EPA regarding a permit and scheduling a meeting on June 26, 1997, with an attachment referenced. 1997 AR226-2540 6RjQEYjypavnYynN4GQ8dQx4d 1
The document is a Notice of Deficiency from the EPA to DuPont regarding their Verification Investigation Report for the Washington Works site, indicating that while there are deficiencies in the report, it is sufficient to proceed with the Remedial Facility Investigation (RFI), which requires a work plan within 90 days. 1997 AR226-2539 3JKQ7ZvNX1njx3pNj4DX6RY1E 5
The document outlines a planning meeting held on June 26, 1997, involving DuPont personnel and the EPA to discuss the scope and schedule for a Resource Conservation and Recovery Act (RCRA) Facility Investigation (RFI) related to groundwater conditions at the Washington Works site, including the detection of various contaminants. 1997 AR226-2542 Bve8Lgv57NL6R57Vk5vxm5m7w 19
This document is a RCRA Facility Investigation Plan prepared by DuPont for the Washington Works facility in West Virginia, detailing the characterization of current conditions and potential impacts of perfluorinated compounds on soil and groundwater. 1997 AR226-2543 LKemjkyR8Jd081QnrgkD0pGB3 57
The document is a notice from the EPA to E.I. duPont de Nemours & Company regarding deficiencies in their RCRA Facility Investigation Work Plan for their Washington, West Virginia facility, requiring modifications to address these issues within 45 days. 1997 AR226-2544 y29NQdo0322m6pozdxzYZKvr 3
This document appears to contain analytical data related to vapor scavenging coefficients and particulate density from testing conducted at the Washington Works site in September 1996, but the specific details are not fully clear due to the formatting. 1996 AR226-2215 91KXXBMR7z74azD5J1NYQbdYD 1
This document appears to contain analytical data related to vapor scavenging coefficients for liquid and frozen precipitation, based on testing conducted at the Washington WORT site in September 1996, referencing the EPA ISC Users Guide. 1996 AR226-2264 k9gJKXmXB4RDvbEJNnOKgw9Qb 1
The document provides monthly average flow data for the Ohio River at Cincinnati, OH, along with estimates of C8 (PFOA) discharge concentrations and total discharge in 1996. 1996 AR226-2455 1Qx1e4oq43ZM7Qyy23vgpOyLo 2
The document reports on a study conducted by Envirogen, Inc. for DuPont to evaluate the ability of nine bacterial strains to aerobically degrade perfluorooctanoate (C8) and ammonium perfluorooctanoate, finding no degradation and recommending further investigation into anaerobic degradation methods and more sensitive analytical techniques. 1996 AR226-2800 gbK1LdkekZZEGLYdE028YEr3Q 14
The document outlines agreements reached regarding the Letart Landfill's permitting and closure program, including groundwater monitoring for perfluorinated compounds such as FC-143 (ammonium perfluorooctanoate) and various volatile organic compounds, with a proposed cost of $250M to $300M for remediation efforts. 1995 AR226-2426 baOVvm9JKg2x62852bwBw4N4O 4
The memorandum discusses the status of action items from a C-8 Global Meeting, specifically reporting that groundwater samples at Shimizu were analyzed for C-8 (perfluorooctanoic acid) in April and May, showing concentrations of 6 ppm and 1 ppm, respectively. 1995 AR226-2436 8RxoOmMxqzBo4JR0kB616yak5 1
The memorandum discusses concerns about the detection of FC-143 in groundwater using the methylene-blue method, questions its appropriateness, and mentions that there are no current plans to reduce FC-143 levels, while also indicating ongoing soil remediation for PCE contamination near the affected area. 1995 AR226-2437 5zM43evxONxZ5q94BrxzQXz 1
The document discusses analytical results for C-8 (likely referring to perfluorooctanoic acid, PFOA) from 1995 to 1997, highlighting improvements in analytical methods and the importance of being within the linear range of the BCD detector for accurate measurements. 1995 AR226-2447 qa7xQVLeo5GnZomyXz4en0pdq 2
This is an internal communication detailing the analysis of cross-check samples using a GC method, with specific results for various samples listed. 1995 AR226-2449 gkm3Y4wdx7e8D1QrqozgK1Y3 1
This document reports on a 14-day repeated oral toxicity study conducted by E. I. du Pont de Nemours and Company, evaluating the effects of the perfluorinated compounds H-19683 and H-19704 on male rats, where H-19704 exhibited clinical signs of toxicity at both tested doses. 1995 AR226-2799 ppjKVoYxzqLrXNjO1gb1gaEnw 47
The memorandum discusses the air quality and emissions of C-8 (likely referring to perfluorooctanoic acid, PFOA) from vent stacks, indicating that the Kinston site's emissions are significantly below community exposure guidelines, thus requiring no additional monitoring or analysis. 1994 AR226-2147 RXG92Vx0OwMQGnEbKbqEXkqX 2
The memorandum summarizes a test conducted to evaluate the effects of C-8 concentration, temperature, and gas flow on foaming in a column setup, revealing that foaming increased with higher C-8 concentrations and gas flow, contrary to expectations that higher temperatures would reduce foaming. 1994 AR226-2435 dYjE8mV5avjRZ301xMYvyzk5b 1
The document discusses the need for standardized sampling and analysis procedures for C-8 (perfluorooctanoic acid, PFOA) to ensure consistent and comparable results across different sites and years, as current methods vary based on individual preferences. 1994 AR226-2465 o9m38QznxxZoQweNBRwB5NgRD 4
The document is a laboratory report by DuPont detailing a static acute toxicity test (LC50) of the substance B-19704 on bluegill sunfish (Lepomis macrochirus), conducted under Good Laboratory Practice compliance, with the study completed on August 26, 1994. 1994 AR226-2798 RjddYoXe80pjNjdy020p0jgYa 20
The document reports on a 100-person human patch test conducted by Biosearch, Inc. for E. I. du Pont de Nemours and Company, which found that both the control item (H-20385) and the test item (H-20386) did not produce adverse skin responses, indicating no potential for delayed contact hypersensitivity. 1994 AR226-3000 Z8RwMOM6BGmMj6KpE63xXEaX7 25
The memorandum discusses the analysis of C-8 (PFOA) levels in various drinking water wells, reporting specific concentrations and seeking approval for domestic well re-sampling. 1993 AR226-2430 baJOVaqowkE688zJ7RNp3ZB2Z 1
The document is a correspondence from CH2M HILL Laboratories to Mr. Roger Zipfel at DuPont, providing analytical results for organic parameters from samples received on March 29, 1993, and noting that one sample arrived broken. 1993 AR226-2428 RJJ9gw05eQBxbGRBJaVy3QLV 45
The document is a Good Laboratory Practice (GLP) certification for Cytotest Cell Research GmbH & Co. KG, confirming that their testing facility complies with GLP principles for conducting toxicological studies, including the Salmonella Typhimurium reverse mutation assay, as part of project 326417. 1993 AR226-2983 XzoZQ6RkYqemExerLMLoQGbzG 35
The document is a certification from Cytotest Cell Research GmbH confirming that their facility was inspected for compliance with Good Laboratory Practice principles while conducting toxicological studies, including a micronucleus assay in mouse bone marrow cells, related to PFOA/PFOS research. 1993 AR226-2984 aBenY02oMpV7345MY4GY7O6My 27
This is a Cytotest Cell Research GmbH & Co. KG report (Project 326417) detailing a Salmonella typhimurium reverse mutation assay, completed on February 17, 1993, and includes a GLP certificate confirming compliance with Good Laboratory Practice principles. 1993 AR226-2985 JrYQ8gw7kpnG9xOEEm2vL5rL2 35
The document reports on an eye irritation test conducted by E. I. du Pont de Nemours and Company, which found that the substance B-19913 caused moderate conjunctival redness in rabbits, but the irritation resolved by day 2 post-treatment. 1993 AR226-2988 QJwvbZmzLwpk06bRG01MBZkJR 12
The document reports on a study conducted by E. I. du Pont de Nemours and Company evaluating the acute eye irritation potential of the substance H-20056 in rabbits, finding that it caused mild conjunctival redness and slight chemosis that resolved within four hours. 1993 AR226-2989 RpDJw2dV10ZmQM2dbeKB13zYB 11
This is a report from Cytotest Cell Research GmbH & Co. KG detailing a micronucleus assay in mouse bone marrow cells, conducted under project number 326428 and completed on February 17, 1993. 1993 AR226-2986 1grd3KpBY0dM3eayynqNob4pE 27
The document reports a study conducted by DuPont on the skin irritation potential of the substance H-20056 in rabbits, finding it to be a moderate skin irritant. 1993 AR226-2991 ymwrq4bDVB6V6314mBg6pzqv2 10
The document is a study report by E.I. du Pont de Nemours and Company, authored by Dr. Keith B. Pierson, evaluating the static acute 96-hour LC50 of a test substance on fathead minnows (Pimephales promelas) in compliance with EPA and OECD guidelines, noting some deviations in laboratory practices that did not affect the study's scientific validity. 1993 AR226-2990 dOdgE67qYgQVd1nOgpj5Y2BB 19
The document is a report on a study (Study No. 920083) conducted by ELF ATOCHEM SA to evaluate the primary cutaneous irritation index of a trial compound, detailing the experimental protocol, results, and quality assurance measures. 1993 AR226-2992 3JBNemM3BVYKnvVo3Jy8bE60E 33
The document is a report from ELF ATOCHEM SA detailing a study on ocular primary irritation related to a trial compound, including experimental protocols, results, and conclusions. 1993 AR226-2993 zbbV31odNvpzedvoYLjQdKRJ3 35
This document is a safety study report for an unspecified compound conducted by ELF ATOCHEM SA on Wistar rats via oral administration, detailing the experimental protocol, results, and quality assurance measures. 1993 AR226-2995 2bLn2vQp4Eo90v1RJd3mj075 31
This document reports on a study conducted by ELF ATOCHEM SA to evaluate cutaneous sensitization of a compound using the Magnusson and Kligman test in guinea pigs. 1993 AR226-2994 3emMy20bG8G3DrgrjeEd5erJE 42
The document reports on a study conducted by DuPont on the approximate lethal dose (ALD) of the substance H-20349 in male rats, finding that it has a very low toxicity with an ALD greater than 5000 mg/kg when administered as a single oral dose. 1993 AR226-2998 NeKdM5j47bmQqd2eQDq2YDmDE 8
The document reports on a chromosome aberration assay conducted in vitro using Chinese hamster V79 cells, overseen by Dr. Wolfgang Vlkner at Cytotest Cell Research GmbH, to evaluate the toxicological properties of a substance, likely related to PFOA or PFOS, in compliance with OECD guidelines. 1993 AR226-2996 RJ01mJ6QYwbDjvB4Gy4GVdE28 33
The document reports on a chromosome aberration assay conducted in vitro using Chinese hamster V79 cells, following OECD Guideline 473, to assess the genotoxicity of a substance, with the study completed by Cytotest Cell Research GmbH under Good Laboratory Practice certification. 1993 AR226-2997 bJmV36VeBN6NBzVwOvQNDa8y 33
The document is a letter from E.I. du Pont de Nemours and Company to Mr. William R. Packard, providing the results of water sample analyses from new Lubeck Service Division wells, indicating the presence of various perfluorinated compounds, including perfluorononanoic acid and perfluorodecanoic acid. 1992 AR226-2425 NGpexJYqdye92JJB6aVQbYkLD 7
The document discusses the interpretation of 1992 testing data for PFOA from the New Lubeck location, addressing issues related to estimated concentrations and sample analysis methods. 1992 AR226-2503 NGMaLKgG4bzLJBQzQvaaB263y 2
This document is a response from DuPont Washington Works addressing information requested by EPA Region III regarding the April 1992 Verification Investigation Report, detailing various items including sampling points, toxicological information, soil sample results, landfill closure information, and electrochemical stabilization techniques for C-8 contaminated soils. 1992 AR226-2541 859p9YO3a0rd85jvq9mNm5yKk 40
The document outlines an algal inhibition test study for ammonium perfluorooctanoate (APFO) conducted by CIT in compliance with various regulatory guidelines, with the study completed on March 7, 2003. 1992 AR226-2815 ykXXMD0y7y6nOnVJ2QYmnwvXD 53
The document reports on a study conducted by E. I. du Pont de Nemours and Company that determined the approximate lethal dose (ALD) of a substance in rats, finding it to be 7500 mg/kg, indicating very low toxicity when administered as a single oral dose. 1992 AR226-2968 9gbn1KXnag1rY1Rq37Moj9ae 7
The document reports a skin irritation test conducted by Du Pont on a test substance, which was found to cause no significant irritation in rabbits, with only one instance of slight erythema observed after 72 hours. 1992 AR226-2969 jgLpJgvM0okDb64XwgEjE0em2 9
The document reports on an eye irritation test conducted by E. I. du Pont de Nemours and Company, which found that the substance Du Pont HLR 809-91 caused mild conjunctival redness in rabbits, indicating it is a mild eye irritant. 1992 AR226-2970 EvoEwGv0yXkLpZnN7RgdjqeZN 12
The document reports on a toxicity study conducted by E. I. du Pont de Nemours and Company, which found that the approximate lethal dose (ALD) of a test substance, presumed to be a perfluorinated compound, was greater than 11,000 µg/kg in male rats, indicating very low toxicity. 1992 AR226-2971 VJywENqvJwapj7jKea1kLgxYj 6
The document is a study report by E. I. du Pont de Nemours and Company detailing the static, acute 48-hour EC50 toxicity of a substance identified as H-19,517 to Daphnia magna, conducted in accordance with OECD guidelines. 1992 AR226-2973 Ne8q8ezMGnQLj5MJB8B5LLNow 17
The document is a study report by E. I. du Pont de Nemours and Company, authored by Dr. Kevin N. Baer, detailing the static acute 48-hour EC50 toxicity of a perfluorinated compound (PFOA) to Daphnia magna, conducted in accordance with EPA and OECD guidelines. 1992 AR226-2974 65B5JRXYYzRrZVz3Lzd90K4Jm 18
The document reports on a study conducted by E. I. du Pont de Nemours and Company to determine the static, acute 48-hour EC50 of the substance H-19,519 on Daphnia magna, following OECD guidelines for testing chemicals. 1992 AR226-2975 jNVnDx3XpK1VvZpXQZzp3KjDZ 16
This is a DuPont Haskell Laboratory report (No. 437-92) assessing the acute toxicity of the test substance H-19,520 to Daphnia magna, completed on July 10, 1992. 1992 AR226-2976 nkoXOvG6jaLo9Mk30MRKg9636 19
The document is an amended final report of a delayed contact hypersensitivity test conducted on the substance H-19173 (a perfluorinated compound) by Pharmakon Research International for E. I. du Pont de Nemours and Company, completed on July 17, 1992, in compliance with Good Laboratory Practice regulations. 1992 AR226-2977 0Jjd3bOj1L7GO6rm789ELoy9k 60
This document is a study report (Du Pont HLR 584-92) conducted by E. I. du Pont de Nemours and Company, detailing a static acute toxicity test of PFOS on fathead minnows (Pimephales promelas) following OECD guidelines, completed on October 30, 1992. 1992 AR226-2979 by0Mr1a3Kb0ebbz3V8E9B59Y1 18
The document is a study report by E. I. du Pont de Nemours and Company detailing the static acute 96-hour LC50 toxicity of the test substance H-19,517 to fathead minnows (Pimephales promelas), conducted in accordance with OECD guidelines, with noted deviations from Good Laboratory Practice standards that did not affect the study's scientific validity. 1992 AR226-2980 Lp5M7YRJ4o0dG092KxLmXyxoz 19
The document discusses Washington Works' plan to increase the discharge of the surfactant C-8 (Ammonium Perfluorooctanoate) to Chambers Works for treatment, evaluating its fate in the wastewater treatment system and confirming that the increased discharge will not affect their NPDES permit. 1991 AR226-2736 mm6867L3kMz8wnG8Gxj7rQonQ 5
The document discusses the assessment of ammonium perfluorooctanoate (C8) at the Spruance Fibers Plant by E.I. DuPont de Nemours & Co., revealing that C8 levels in various samples align with previous estimates and calculating a worst-case river concentration of 0.4 ppb. 1991 AR226-2269 gvpBV7npGL06woQmQB2oL0dL 1
This document appears to be a laboratory data report detailing analytical results for a component labeled ET-C8, with various standard sample areas and mass ratios recorded on September 6, 1991. 1991 AR226-2416 2NKx3Dk4YReEQDVQdY9K6kGVb 6
The document outlines a work plan for a Verification Investigation (VI) and a RCRA Facility Investigation (RFI) related to C-8 (PFOA) sampling, detailing the analysis of water and soil samples to assess contamination levels and future monitoring needs. 1991 AR226-2418 Ea6rKR0avajmywz2BxvE80mn 2
The document outlines the conclusions from a November 1991 interlaboratory meeting regarding the analysis of C-8 (perfluorooctanoic acid, PFOA) in water, determining that CH2M-Hill's methods are preferred due to lower detection limits and costs, while discontinuing the practice of adjusting results from the Experimental Station. 1991 AR226-2420 rem00Y772EQVJq5wqnJbe4Goa 3
The document reports the detection of PFOA in contaminated soil and groundwater at the Washington Works site, including various sampling results from wells and discharge areas, indicating potential environmental and health concerns. 1991 AR226-2529 DMDydvpy1oVObNndxM3xGB4Zd 1
The document is a conditional approval letter from the EPA to Du Pont regarding the RCRA Verification Investigation Work Plan for their Washington Works Plant, specifically addressing sampling requirements for leachate, groundwater, and soil related to PFOA and PFOS contamination. 1991 AR226-2537 2jeeo549JL3vyBYdmvOMy2Ln7 4
The document reports a skin irritation test conducted by E. I. du Pont de Nemours and Company on a test material, which resulted in slight erythema but no edema in rabbits, indicating that the material was a slight skin irritant. 1991 AR226-2952 Ex69E2MQEV94JYYV4XdD6GN6j 9
The document reports on a study conducted by E. I. du Pont de Nemours and Company that determined the approximate lethal dose (ALD) of a test material in rats, finding it to be greater than 11,000 mg/kg, indicating very low toxicity. 1991 AR226-2953 QkZ4M6gOm9L1m8jjVg84Bd4oo 8
The document reports on a study conducted by EnviroSystems Division Resource Analysts, Incorporated, assessing the static acute toxicity of perfluorinated compounds to the freshwater alga Selenastrum capricornutum, completed on April 15, 1991, for E. I. du Pont de Nemours and Company. 1991 AR226-2955 wrKemg9ER3rN4VqkGXoMGwd9D 20
The document reports on an eye irritation test conducted by E. I. du Pont de Nemours and Company, which found that the test material caused mild conjunctival redness in rabbits but no corneal damage, with the unwashed eye returning to normal within four hours post-treatment. 1991 AR226-2956 Nz1nvzMJo0ZN4NxN4a2xDmpD 12
The document reports on a study conducted by E. I. du Pont de Nemours and Company, which determined that the approximate lethal dose (ALD) of a perfluorinated compound administered orally to male rats was greater than 11,000 mg/kg, indicating very low toxicity. 1991 AR226-2957 QJxbRNRJwXVnDZxXROLaZoL2k 7
The document reports that a study conducted by DuPont's Haskell Laboratory on May 20, 1991, found that the tested material, likely a perfluorinated compound, did not cause eye irritation in rabbits, indicating it is not an eye irritant. 1991 AR226-2958 wg5L3NRNoqxRJgGm8nVaZ8ea6 13
The document is a study report from Du Pont detailing a skin sensitization test conducted on guinea pigs, compliant with Good Laboratory Practices, for a substance identified as an amber dispersion, with the study completed on March 25, 1991. 1991 AR226-2954 DGw7kR6GbemK3K6qXpZM6JKGa 74
The document reports a skin irritation test conducted by E. I. du Pont de Nemours and Company on a test material identified as BIX 325-91, which was found to cause mild skin irritation in rabbits. 1991 AR226-2959 EvkyrJakmwXxM3BmRX2DgJRRL 9
The document is a study report by E. I. du Pont de Nemours and Company, authored by Kevin N. Baer, Ph.D., detailing the static acute toxicity of a chemical (likely PFOA or a related perfluorinated compound) to Daphnia magna, conducted under OECD guidelines and completed on June 26, 1991. 1991 AR226-2960 VGMRERz6N0V2o1Orya2dQyMg 15
The document is a study report by E. I. du Pont de Nemours and Company detailing a static, acute 96-hour LC50 test of PFOA on fathead minnows (Pimephales promelas), conducted according to EPA Good Laboratory Practice regulations. 1991 AR226-2961 Ex8d20pGZENYYXpZpnGrrwLYV 16
The document details a skin sensitization test conducted by Pharmakon Research International for E. I. du Pont de Nemours and Company on a substance referred to as Du Pont HLO 432-91, completed on July 31, 1991, in compliance with Good Laboratory Practices. 1991 AR226-2962 1QrM7zb7Y1ZkxrLj2Yqgad9Ed 60
The document is a study report by Du Pont, authored by Kevin N. Baer, Ph.D., which evaluates the static acute 96-hour LC50 toxicity of a substance to juvenile fathead minnows (Pimephales promelas), concluding that the substance is moderately acutely toxic. 1991 AR226-2965 VGrv54BN1MRJL7Bn4wa5qdOaq 12
The document reports on a study conducted by E. I. du Pont de Nemours and Company that determined the 96-hour LC50 of PFOA in fathead minnows (Pimephales promelas), indicating that PFOA was not acutely toxic at the highest tested concentration of 5000 µg/L. 1991 AR226-2964 e5no1Go0kq6mRERQv2vyQJELy 14
The document is a compliance statement for a sensitization test conducted on guinea pigs using a test material from Du Pont, specifically related to the study HLO 433-91, which was completed on August 14, 1991, and adhered to Good Laboratory Practices as outlined by the EPA and FDA. 1991 AR226-2963 ga7myRQnmqxwBg3xrG8R9rzy3 68
The document is a report from Du Pont detailing a 100-person repeated insult patch test conducted by Biosearch, Inc. on a substance related to Du Pont Chemicals, completed on October 11, 1991. 1991 AR226-2966 X7aoYxL3JLwXkbdw6DLzLLXjd 17
This document outlines a method developed by rH?M HILL, INC. for the low-level determination of FC-143 (ammonium perfluorooctanoate) in water using capillary gas chromatography with electron capture detection, specifying procedures, safety precautions, and detection limits. 1991 AR226-2727 Naz128aXZvayENBn8OEL8mv8 21
The document is a progress report from CKMHILL to E.I. Dupont de Nemours detailing the development of an analytical method for measuring FC-143 in water at levels below 0.1 ppb, with ongoing method refinement and testing. 1991 AR226-2728 zdz1zkjwvEnmawOBQYLZMZMka 18