|
Unreadable document.
|
1988 |
AR226-1988
|
aDBKG3ODrR3BYyb32mRBewB6b |
3 |
|
The document is an industrial hygiene report from Washington Works detailing personal exposure samples of fluorocarbons, specifically C-8/FC-143, collected between January 1988 and October 1991, with concentrations ranging from <0.03 MPB to 0.250 MPB.
|
1988 |
AR226-2064
|
ppNB6YMxwxn4y8okD85ZYEXo6 |
2 |
|
The document is an industrial hygiene report detailing the concentrations of fluorinated compounds, specifically PFOA, in the workplace at Washington Works from January 1988 to October 1991, with various sample results indicating concentrations ranging from <0.03 to 0.215 MPB.
|
1988 |
AR226-2065
|
Ra6vpXk1ZvgJJKG5Nb23nYEXX |
5 |
|
The document is an industrial hygiene report detailing personal sampling results for C-8/FC-143 (a perfluorinated compound) at the Washington Works facility from January 1988 to October 1991, indicating various concentrations and percentages of exposure among employees during specific sampling dates.
|
1988 |
AR226-2066
|
RJ38mmyzqw0xvV809zqZ623Y8 |
4 |
|
The document is an industrial hygiene report detailing the concentrations of fluorocarbons, specifically C-8/FC-143, in the workplace from January 1988 to October 1991, with various sample results indicating concentrations ranging from <0.03 MPB to 0.4E MPB among different employees.
|
1988 |
AR226-2069
|
B5v70O40Mq8vb5J6BGwM2YZwj |
3 |
|
The document is an attachment to a letter from 3M detailing various studies and reviews related to the toxicity and carcinogenicity of perfluorooctanoic acid (PFOA), including findings from rat and monkey studies conducted by different laboratories.
|
1987 |
AR226-1916
|
N2BYmyEx2BwdZQ54zOwE28nEQ |
1 |
|
The document reviews a two-year toxicity and carcinogenicity study of fluorochemical FC-143 conducted by 3M Company, highlighting findings of hepatic toxicity and non-neoplastic lesions in rats, with a specific focus on liver damage and enzyme elevation in male rats.
|
1987 |
AR226-1917
|
VjK1ddyYDY35873xv70BGqpKK |
6 |
|
The document reports on C-8 (perfluorooctanoic acid, PFOA) ground-level concentrations at Washington Works, indicating that both pre- and post-May 1981 shutdown concentrations are well below the provisional acceptable exposure level (AEL) of 10 µg/m³, with the highest annual mean concentration being only about 5% of the AEL.
|
1987 |
AR226-1987
|
7Rqd7p2mY2GXg9EOV11pkQDdV |
2 |
|
Empty document.
|
1985 |
AR226-1985
|
2qaZO67eVgoaJbKEaJzYkzazg |
1 |
|
Unreadable document.
|
1984 |
AR226-1984
|
KzRe2OvOwoad5MpEGorr3xO8K |
19 |
|
The document reviews blood data related to C-8 (PFOA) levels among employees at Washington Works, indicating varying percentages of blood contamination across different years and highlighting the challenges in interpreting the data due to personnel changes and historical exposure factors.
|
1984 |
AR226-2010
|
37yKO1gZq004Mp6moQ1JxZwR0 |
5 |
|
Unreadable document.
|
1983 |
AR226-1983
|
6RB1DxzJR72oJ8DjBz1pdNwEg |
2 |
|
The document outlines an updated program to reduce employee exposure to C-8 (perfluorooctanoic acid, PFOA) at a facility, highlighting that air sampling during a cleanup showed 31 out of 32 samples were below the minimum detectable level, indicating that residual dust is not a significant airborne source, although it remains a concern for skin contact.
|
1982 |
AR226-1982
|
Kmb6BJD5oDXk4QBRZvx9zb30 |
3 |
|
An industrial hygiene investigation at the incinerator found that personal exposures to C-8 (perfluorooctanoic acid) were essentially zero and below the acceptable exposure limit, leading to the conclusion that no restrictions on personnel were necessary, while ruling out the incinerator as a source of C-8 emissions.
|
1981 |
AR226-1981
|
QMEY5EVmbq22YjvmnnNyNMwVk |
2 |
|
The document discusses the evaluation of eight-hour and annual mean C-8 (perfluorooctanoic acid, PFOA) concentrations resulting from emissions at the TFE and FEP buildings of E. I. Du Pont de Nemours & Company, based on five years of hourly meteorological data.
|
1981 |
AR226-1986
|
6bnjwokKMnV9YKY4M84yRw4V1 |
2 |
|
Unreadable document.
|
1980 |
AR226-1980
|
jgpj9VrN1MYGL900M7G8ynn1Z |
13 |
|
The document outlines dispersion calculations for PFOA emissions from a facility, specifying the need to determine annual and 8-hour average concentrations at various receptor locations, using historical weather data to improve accuracy in the calculations.
|
1978 |
AR226-1978
|
DDRd8bRB2p5oq6dnyjx5G8GB5 |
2 |
|
The document discusses concerns regarding the low exhaust stack heights at E. I. du Pont de Nemours & Company facilities, which may lead to inadequate dispersion of C-8 (perfluorooctanoic acid, PFOA) emissions, and outlines recent sampling efforts and safety factors applied to ensure compliance with air quality standards.
|
1977 |
AR226-1977
|
dE0ZBe1G1qkGw78BzmKMo3aB |
3 |
|
This is a DuPont internal communication detailing the request for an analysis of eight-hour time-weighted average C-8 concentrations downwind of Teflon exhaust stacks at the Washington Works facility, including specific emission sources and conditions for data collection.
|
1976 |
AR226-1976
|
6Bnn9LZVJXozMZvEGj8mdB8k6 |
3 |
|
The document reports on a study conducted by 3M that evaluated the mobility of fluorochemicals FC 95 and FC 143 in sandy loam soil, finding that FC 95 had an adsorption coefficient of 0.99 and FC 143 had a coefficient of 0.38, indicating both compounds are mobile in the soil.
|
1976 |
AR226-1783
|
2qNOoyQqKpvjOpjd09358qk0g |
14 |
|
Unreadable document.
|
1975 |
AR226-1975
|
LJE6Xreg57yqGOa9a1D1Qrexq |
6 |
|
Unreadable document.
|
1974 |
AR226-1974
|
r6dYz05z8EBBmoQoMJMbkmgqV |
5 |
|
The document outlines a request from E.I. du Pont de Nemours and Company for calculations of expected time-weighted average annual and 8-hour ground-level concentrations of C-8 (perfluorooctanoic acid, PFOA) emissions at various locations within their Washington Works facility, based on weather data received from the National Climatic Center.
|
1973 |
AR226-1973
|
Xd93zoe3RevEq9vDyDYVmDww |
2 |
|
The document discusses the results of air sampling for C-8 (perfluorooctanoic acid, PFOA) levels at a plant following a major cleanup, indicating no change in C-8 levels despite significant dust removal, and emphasizes the need to address hot process leaks as the source of airborne C-8 exposure.
|
1972 |
AR226-1972
|
4vyDL5DJexXdj127jRn8g85wx |
6 |
|
The document discusses the correlation between airborne C-8 (PFOA) and organic fluorine levels in blood samples, indicating that while there is no direct correlation, C-8 accumulates in the blood over time, with monomer operators showing varying levels of organic fluorine due to prolonged exposure.
|
1971 |
AR226-1971
|
bOadnjjmGv7Zq2JMLm5xYRy4o |
2 |
|
Unreadable document.
|
1970 |
AR226-1970
|
NE6Z2N4y5mZ3OKNdpbR0BNKdQ |
1 |
|
Unreadable document.
|
1969 |
AR226-1969
|
99jwyVrXdeO3VnLjO5kYpRGop |
4 |
|
Unreadable document.
|
1968 |
AR226-1968
|
vy692dyO8LO3Za2wZnR3zZnzZ |
4 |
|
Unreadable document.
|
1967 |
AR226-1967
|
rp8yzXRw6YaozZvj0Q1y4nJNr |
3 |
|
The document outlines the status and program related to C-8 (PFOS) control at DuPont, including communication meetings, epidemiology studies, and findings indicating no conclusive evidence of health problems among workers exposed to C-8.
|
1965 |
AR226-1965
|
MGNDo4NQ6Qx3zdRjzN0BZX2yL |
36 |
|
3M is submitting additional pathology reviews related to perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) to the EPA as part of their ongoing dialogue regarding perfluorochemicals.
|
1958 |
AR226-1915
|
dn00YymvDjERyQDg4ZrBBpgLR |
1 |
|
This document appears to be a series of laboratory data entries related to air quality measurements, specifically focusing on PFOA levels over several years, but the content is largely obscured and difficult to interpret.
|
1950 |
AR226-2002
|
XRmGqjDDXvmo66X3LM1Nbk5Od |
11 |
|
The document is a final report detailing an extended laboratory study on the atmospheric degradation of the fluorinated alcohol C6F13CH2CH2OH and its aldehyde product C6F13CHO, conducted by CNRS-LCSR and RAND Corporation, which aims to understand the photolysis rates and environmental impact of these compounds.
|
1944 |
AR226-1944
|
DD2GGqg5EbGBNOOker1GoBwqQ |
16 |
|
The document details an extended laboratory study conducted by Professor Georges Le Bras and colleagues on the photolysis rate of perfluorinated aldehydes, aiming to reduce or eliminate the production of corresponding perfluorocarboxylic acids under low NOx conditions, using solar radiation experiments at the EUPHORE facility in Valencia, Spain.
|
1943 |
AR226-1943
|
9Jne4dBoXG5znjRqzpEZxdZ17 |
7 |
|
The document is a submission from the Telomer Research Program, representing companies including DuPont, to the EPA, providing a final report and study summary on the atmospheric degradation of fluorinated alcohols, which is related to PFOA and PFOS research.
|
1942 |
AR226-1942
|
VembBGezvKLGpjo5EK1qjEEq |
1 |
|
the maternal toxicity observed at 500 mg/kg/day of 8-2 Telomer B Alcohol, as indicated by maternal mortality, decreased body weights, and increased clinical toxicity signs in the study conducted by E.I. du Pont de Nemours and Company.
|
1940 |
AR226-1940
|
KRogqqVRe7x7511Vvkz6BDyp0 |
15 |
|
The document reports on a developmental toxicity study of 8-2 Telomer B Alcohol conducted by DuPont, following EPA and OECD guidelines, to assess its effects on rats.
|
1939 |
AR226-1939
|
gDorZ88LEeEgoGrE13Vx1NmGN |
156 |
|
This document is a revised analytical report from Exygen Research detailing the analysis of perfluorooctanoic acid (PFOA) and perfluorooctanesulfonate (PFOS) in water samples from Oakdale Municipality, requested by Gary A. Rohenstein of 3M Company, with no changes to the analytical results.
|
1933 |
AR226-1933
|
o9r15jKYbJY4wzBDqb8mOpawo |
10 |
|
This document appears to be a data report from an unspecified laboratory detailing analytical results, including concentration measurements and instrument conditions, related to a study conducted on March 19, 1995.
|
1932 |
AR226-2075
|
dYnNQe9BgXN5rXjZoLJByqBM5 |
2 |
|
DuPont presented its comprehensive risk management strategy for PFOA to the EPA on January 31, 2005, emphasizing source reduction, voluntary commitments, and the need for open dialogue amid challenges related to safety perceptions and regulatory complexities.
|
1914 |
AR226-1914
|
vV41dpr5Gd6pDzDONwMGKbmjb |
43 |
|
The document outlines an ongoing occupational health study on PFOA involving 1,025 current workers at the DuPont Washington Works site, focusing on the relationship between serum PFOA levels and health outcomes through cross-sectional surveys and retrospective cohort mortality analyses.
|
1910 |
AR226-1910
|
O1Qw3KEzzgVqGDj3qbkv0VeQK |
13 |
|
The document is a laboratory report from 3M Environmental Technology & Safety Services detailing a PFOS dietary LC50 study with mallard ducks, which found that PFOS levels in the sera and livers of the ducks increased with dosage but declined significantly between days 8 and 22 post-exposure.
|
1902 |
AR226-1829
|
5kJqe1xYrOv6VbqNNnYbXyOvN |
14 |
|
The document is an analytical report from 3M Environmental Laboratory detailing a PFOS dietary LC50 study conducted on mallards, which includes serum and liver data with specific concentrations of PFOS measured in various samples.
|
1902 |
AR226-1853
|
o3Bkd4Q8QyrVB38E0N600p2D |
14 |
|
DuPont submitted information to the EPA's Office of Pollution Prevention and Toxics regarding perfluorinated chemicals, including a precautionary TSCA 8(e) submission despite believing it did not trigger reporting obligations.
|
1900 |
AR226-1964
|
JNz64BdrwQYB9qG000KB7prKX |
43 |
|
This analytical report from Exygen Research details the analysis of total perfluorooctanesulfonate (PFOS) in mallard and quail egg yolk samples, including the distribution of PFOS in different fractions of the yolk, as requested by 3M Environmental Technology and Safety Services.
|
— |
AR226-1834
|
kmy3XGkmLz0knrLMXBxy07kBD |
64 |
|
This analytical report from Exygen Research, requested by 3M Environmental Technology and Safety Services, details the analysis of total perfluorooctanesulfonate (PFOS) in mallard and quail egg yolk samples, including the distribution of PFOS in different fractions of the yolk.
|
— |
AR226-1858
|
OEQdor8DxEBmG6KJQRXeLk50K |
64 |
|
This document is an analytical phase report for a reproduction study on PFOS conducted with the Northern Bobwhite by the 3M Environmental Laboratory, detailing compliance with TSCA GLP standards and noting certain exceptions.
|
— |
AR226-1856
|
1585wBNyNbRpn8nexeGYb1bLq |
226 |
|
The document is a submission to the EPA by MIC Specialty Chemicals, Inc. regarding a report from Dr. Giovanni Costa of the University of Verona about biological monitoring of workers exposed to perfluorooctanoic acid (PFOA) at Miteni S.p.A., an Italian manufacturer of PFOA, indicating no substantial risk was identified.
|
— |
AR226-1868
|
zomDvBddNDBYr7K6oeoey6bYR |
10 |
|
The document presents a statistical analysis of serum lipid data related to Miteni workers, focusing on the relationship between serum lipid levels and PFOA concentrations, with various slopes and p-values indicating the strength of these associations over multiple years.
|
— |
AR226-1869
|
gDYN795QDYq8XRy8jb2Q9dp5e |
20 |
|
The document is an analytical report from Exygen Research detailing the analysis of perfluorooctanoic acid (PFOA) in human serum samples, which were received from Dr. Tamara Bailey for testing.
|
— |
AR226-1871
|
RaRzON4n7RbqvXdLvvmGmQZB8 |
10 |
|
Unreadable document.
|
— |
AR226-1881
|
RpNaboNKnojK0QjYk9mGpEgqV |
2 |
|
The document presents data on serum PFOA levels among workers assigned to Teflon production, showing a median level of 0.494 ppm for current Teflon workers compared to lower levels in those never assigned to Teflon.
|
— |
AR226-1885
|
nqgd8L7mR2aJdZqeNQp4OEGX |
1 |
|
3M Company submitted studies related to perfluorinated compounds to the EPA under TSCA Section 8(e), indicating that the data may not strictly corroborate previously reported information but could warrant submission based on EPA's guidance.
|
— |
AR226-1895
|
65BZmnLxX2Qd1dO353KEBKO8o |
11 |
|
3M Company submitted studies related to perfluorinated compounds, including PFOA, to the EPA under TSCA Section 8(e), indicating that the data may not fully corroborate previously reported information but could warrant submission based on EPA guidance.
|
— |
AR226-1897
|
KJY4voqJmdmYrzdzrqwxnx006 |
11 |
|
The document is a pathology peer review report confirming the original conclusions of a 26-week toxicity study on ammonium perfluorooctanoate (APFO) in cynomolgus monkeys, indicating that the cause of moribundity in one animal was determined while the cause for another animal remains unclear, with a low likelihood of APFO treatment being responsible for the latter's condition.
|
— |
AR226-1918
|
O2zoobKGNV9bOn7d621w8paL |
1 |
|
This document presents data on PFOA levels in various water sources in Ohio and West Virginia, along with demographic information and cancer odds ratios for a population exposed to PFOA, indicating significant health implications related to exposure.
|
— |
AR226-1926
|
M4zoMQB0VjD8GOK71Rng9BYRy |
16 |
|
This document contains a summary of analytical reports for PFOA and PFOS in water samples from various locations, including Hastings, Cottage Grove, and Oakdale, as well as a health data validation project related to PFOA.
|
— |
AR226-1930
|
qkzq7ZVYX0y0X0aMb9eL0x0Zj |
1 |
|
This revised analytical report from Exygen Research details the analysis of perfluorooctanoic acid (PFOA) and perfluorooctanesulfonate (PFOS) in water samples collected from Hastings Municipality at the request of 3M Company, confirming that the analytical results remain unchanged despite minor text revisions.
|
— |
AR226-1931
|
J3L8xNep4Z6Yd35vxm2NokgKr |
10 |
|
This revised analytical report from Exygen Research details the analysis of perfluorooctanoic acid (PFOA) and perfluorooctanesulfonate (PFOS) in water samples collected by 3M Company, confirming that the analytical results remain unchanged despite updates to requester information.
|
— |
AR226-1932
|
MJorE6jwRa2Yy5BRG8KJpbgXM |
10 |
|
This document is a final laboratory report from 3M Environmental Laboratory detailing the analysis of perfluorooctanoate (PFOA) and perfluorooctane sulfonate (PFOS) in water samples collected from the Dyneon facility in Oakdale, Minnesota, on January 4, 2005.
|
— |
AR226-1934
|
8VZYkzXeKeV0gE6758nqYVR7k |
8 |
|
This document is an analytical report from Exygen Research detailing the analysis of perfluorooctanoic acid (PFOA) and perfluorooctanesulfonate (PFOS) in water samples collected from Oakdale Municipality, as requested by Gary Hohenstein of 3M Company.
|
— |
AR226-1935
|
MGd5pJ8KE6rDQxJkDq5dNVD9y |
10 |
|
The document is an analytical report from Exygen Research detailing the analysis of perfluorooctanoate (PFOA) and perfluorooctanesulfonate (PFOS) in water samples collected from Oakdale Municipality at the request of Gary Hohenstein from 3M Company.
|
— |
AR226-1946
|
823YNKy1B91kyXbQbg5eErGOZ |
23 |
|
The document is an analytical report from Exygen Research detailing the analysis of PFOA and PFOS in water samples from Oakdale Municipality, requested by Gary Hohenstein of 3M Company, indicating that twenty-one samples were received and analyzed using solid phase extraction and liquid chromatography-tandem mass spectrometry methods.
|
— |
AR226-1947
|
5DQYd2dR8mNQQnk49J572Vere |
37 |
|
The document is an analytical report from Exygen Research detailing the analysis of perfluorooctanoate (PFOA) and perfluorooctanesulfonate (PFOS) in water samples collected from Oakdale Municipality at the request of 3M Company.
|
— |
AR226-1950
|
LovgGXry2VVwKJ4LoK64ggGwb |
23 |
|
The document is an analytical report from Exygen Research detailing the analysis of perfluorooctanoate (PFOA) and perfluorooctanesulfonate (PFOS) in water samples collected from Oakdale Municipality at the request of Gary Hohenstein from 3M Company.
|
— |
AR226-1951
|
o973o8q9pomzdYbJxrgzeOML7 |
22 |
|
The document is an analytical report from Exygen Research detailing the analysis of perfluorooctanoate (PFOA) and perfluorooctanesulfonate (PFOS) in water samples collected from Hastings Municipality at the request of Gary A. Hohenstein from 3M Company.
|
— |
AR226-1952
|
3Ng66p762o4zqMoRBmb1q8L46 |
15 |
|
This is a letterhead cover page from an unspecified laboratory, with no analytical content retained in the OCR.
|
— |
AR226-1957
|
Gm4qoGVXMq7e91Yj1MDkQydyn |
14 |
|
Empty document.
|
— |
AR226-1960
|
pmb6naoO4brBkdrYeOpZ3rnza |
3 |
|
Empty document.
|
— |
AR226-1962
|
QJV1YG8JZ5rM9eXBp1NwLxYk |
3 |
|
Unreadable document.
|
— |
AR226-1966
|
prngyxdn0dK06587Dz0VmnMB |
4 |
|
Unreadable document.
|
— |
AR226-1979
|
j4GoRVMZ5yoMekD9LwxzJ23Q |
8 |
|
Unreadable document.
|
— |
AR226-1989
|
5kjeKXv55brd0Xrmnom9M4x5z |
2 |
|
This document outlines various environmental influence projects and investigations related to C-8 at the Washington Works facility, including groundwater contamination studies and landfill assessments.
|
— |
AR226-2011
|
RJNgB59L459QBpdw9w41mLxya |
15 |
|
This document reports on air monitoring data for PFOA exposure at DuPont's Washington Works, indicating that none of the 82 personal samples exceeded the exposure limit of 0.59 moles/billion, but three job assignments require additional sampling to ensure compliance with corporate exposure objectives.
|
— |
AR226-2015
|
0gQJ0bQKRxnNay7gpQQqKmLgJ |
1 |
|
The document presents air concentration trends of perfluorooctanoic acid (C-8) from various operators, showing a range of measured values in parts per billion (ppb) over several years, with the highest recorded concentration from the Fine Powder Dryer Operator at 1.40 ppb in 1980.
|
— |
AR226-2016
|
o9gM8rZq55V85Vw2aM8ZB5GDD |
4 |
|
This is a letterhead cover page from an unspecified department, with no analytical content retained in the OCR.
|
— |
AR226-2018
|
qG92JqvE7wQ84ML3pLe1OLjG |
2 |
|
The document presents air and blood monitoring results for C-8 (PFOA) exposure among DuPont workers at the Washington Works facility, indicating a correlation between air and blood levels of C-8, with concerns about bio-persistence and data interpretation challenges.
|
— |
AR226-2021
|
6brrE4rBvXqDMagR2oLG2321o |
9 |
|
Unreadable document.
|
— |
AR226-2026
|
65wOj91NKXkGxaDBOrk51pV26 |
3 |
|
The document summarizes observations and conclusions regarding exposure risks and operational practices related to C-8 (perfluorooctanoic acid, PFOA) in two job contexts, highlighting the need for improved safety measures such as a drip pan and air monitoring due to potential exposure concerns.
|
— |
AR226-2025
|
VGz0eX120yKO3n7m5myrpdn08 |
13 |
|
The document discusses the levels of C-8 (PFOA) around PEP coagulators and in PSR resins, reporting that samples taken show concentrations ranging from 0.06 to 2.01 PPB and that levels in PSR have decreased from 25 ppm to 2 ppm due to process improvements.
|
— |
AR226-2027
|
0gqmnQ61JZ2er61jBZ4zRZO7n |
1 |
|
The document discusses concerns about elevated C-8 (PFOA) levels in air around the granular addition hood, prompting a request for plans to reduce operator exposure through potential enclosure of the area.
|
— |
AR226-2030
|
v6Go8oQ6EbwB9gmq9JOL0Me1b |
1 |
|
The document discusses employee exposure to C-8 (perfluorooctanoic acid, PFOA) during operations involving draining tanks and filters, highlighting the need for improved safety measures due to high airborne levels detected in the workplace.
|
— |
AR226-2031
|
5bpm0RJO527Km5kvdroBMrgM4 |
3 |
|
This document reports on the analysis of C-8 (PFOA) samples taken from the roof of the C-8 Recovery Building by DuPont, indicating that the measured levels were below the company's action level of 0.56 mpb, with a blank sample showing negligible contamination.
|
— |
AR226-2032
|
5b2wp3M9BLmNyJ5wQY6M9p61R |
1 |
|
The document summarizes a C-8 sampling project conducted by Environmental Lab LSE, focusing on air and surface wipe sampling for perfluorooctanoic acid (C-8) in Teflon areas, in response to previous blood testing results indicating elevated C-8 levels.
|
— |
AR226-2028
|
5DKoY1DdM6qXX0BgEdzapq3M4 |
41 |
|
The document discusses the need for action regarding elevated C-8 (PFOA) levels found in roof samples at the B-162 site, including potential relocation of the smoking area and investigation into roof access procedures for construction workers.
|
— |
AR226-2034
|
Gm2wb3yMaamGQGoYJqQY4BvBm |
1 |
|
The document discusses issues with the determination of C8 (likely referring to PFOA) in air samples collected on July 24, 1998, recommending resampling due to erratic results and calibration problems, while noting improved calibration results obtained on July 27.
|
— |
AR226-2036
|
EqJo1wndGNomp6xrjEo5vebB0 |
2 |
|
This document reports on air samples collected on July 29, 1998, which showed appreciable levels of C-8 (perfluorooctanoic acid) in various locations, indicating the need for additional sampling to improve method robustness and address potential identification issues.
|
— |
AR226-2037
|
wr6xyLwoeb8w14yoZqe12kqME |
2 |
|
The document details the sampling of C-8 (PFOA) from various locations within the DuPont facility, noting wind conditions and the observation of bubbles from a candle, with samples to be sent for analysis to Teflon Lab.
|
— |
AR226-2041
|
pm4YXkEzKLJoGqG4evwLOn13d |
1 |
|
The document reports the results of nonroutine C-8 (PFOA) testing conducted by DuPont on June 8, 1999, showing concentrations of 0.54 mpb on the Recovery Building Roof and 1.15 mpb inside the Recovery Building, with a pump failure in the Smoking Area resulting in no data.
|
— |
AR226-2043
|
MMqN1kMvQL7g1kMyrK9m2ZOxy |
1 |
|
The document discusses the historical presence of C-8 (PFOA) in the blood of workers at Washington Works, noting its persistence, the lack of excess disease incidence among employees, and the correlation between blood and air levels of C-8, influenced by dermal exposure.
|
— |
AR226-2042
|
Lgm3nMGbnJMXJYzyvNBXYZq7z |
11 |
|
The document discusses high C-8 (PFOA) results found in the slab rack area and fine powder recovery building at DuPont, indicating levels near the action exposure limit (AEL) and suggesting the need for investigations to determine the cause.
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AR226-2044
|
2qyONkMgXazEpzLndydBoaBjR |
1 |
|
The document discusses a follow-up meeting regarding the C-8 recovery system at DuPont, where it was reported that the estimated maximum concentration of PFOA exposure from bubbles during rain is significantly lower than the action level, and outlines steps for further communication and analysis of the situation.
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— |
AR226-2045
|
dZJZEz27vG6YBadOqbKOeerR |
1 |
|
The document discusses high levels of C-8 (PFOA) detected on the roofs of buildings B-124 and B-162, indicating the need for increased personal protective equipment (PPE) due to emissions from a scrubber exhaust, which may be generating a mist contributing to elevated sample results.
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— |
AR226-2046
|
102nw5N3oM38BbpMNnK1bVjZd |
1 |
|
Unreadable document.
|
— |
AR226-2051
|
dJpoxDN7KYewKBMpkL14abzb |
2 |
|
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.
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— |
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 |