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RECEIVED OPPT NC!C
Telomer Research Program Meeting, February 3, 2003
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Telomer Research Program Meeting, February 3, 2003
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T R P Telomer Research Program
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3 February 2003 Presentation to U.S. EPA - OPPT
3
Telomer Research Program
g g |ij( TRP Presentation OiLitiine
Introduction Information Sharing
Product & Article Analysis Telomer Manufacturing In-Use Mass Balance
Issues for Discussion Metabolism & Degradation Closure & Path Forward
2003-02-03 , page 2
Expectations Alignment Path Forward
2003-02-03 , page 3
Telomer Research Program
TRP has a database for collecting and sharing scientific information
Types of Information we have
Member Company Information TRP Study Reports Public Literature Relevant Unpublished Reports (non TRP)
We are prepared to provide this information to you. We want to
understand what you would like to have and would like to develop
a process and mechanism. Who is contact point?
2003-02-03, page 4
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Telomer Research Program
Information ; Submissions to Date
TRP Presentations: 2000-2002
TRP organization & structure Work Plans, Timelines Study Protocol Overview 8-2 Telomer B Alcohol Selection Criteria Updates of 15 Studies and Results Shared
Study Reports (8-2 TBA): January 2003
Acute Oral Toxicity In -vivo Rat micronucleus Assay Reverse Mutation Assay
2003-02-03, page 5
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Telomer Research Program
Information : Study Report Timeline
8-2 Telomer Alcohol
February 2003
Acute Aquatic Studies : Fish, Daphnia, Algae Respiration Inhibition Hydrolytic Stability . M E T IB C F Study Univ. of Toronto Progress R eport: TRP funded research
March 2003
Physical - Chemical Properties Atmospheric Indirect Photolysis 90-Day Subchronic Oral Toxicity Terrestrial Effects : Earthworm, Nematode, Plants
May/June 2003
OECD 301 Ready Biodegradation with transformation products and mass balance
2003-02-03, page 7
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Telomer Research Program
January 10,2003 TRP Letter Proposed Workstreams for 2003
2003-02-03 , page 8
1
Tier I- Product & Article Analysis
Direct Analysis : Workstream A ( 4 - 6 months post approval)
Products: polymeric Articles : carpet, textile, paper need EPA protocol review & approval - who & how
. Aging : Workstream B
method & protocol development with EPA timing dependent upon methods & protocols
2003-02-03, page 9
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Telomer Research Program
Product & Article Analysis : Direct Analysis : Workstream
Develop and demonstrate sampling and analysis methods for Products & Articles
Isotopically enriched (M+2) PFOA standard C6F1313CF213COOH will be used to help ensure quantitation accuracy
Treated Products & Articles (12-15 Items)
Products
are the principal products sold by TRP members worldwide
all are polymeric, the fluorotelomer group is linked to a polymer backbone
Article Types : Carpet, Textile, Paper
Specific sample information will be company confidential
2003-02-03 , page 10
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Telomer Research Program
Tier II - Potential for Human Exposure via Articles
. conditional . dependent upon Tier I results, review and discussion with
EPA
2003-02-03 , page 11
Telomer Research Program
Processes : Intermediates to Finished Products Potential PFOA Releases & Occupational Exposure Industry Mass Balance and Production Data Major Consumer Uses
2003-02-03 , page 12
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Telomer Research Program
Telomer Manufacturi
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c f 2=c f 2 Tetrafluoroethylene)
Telomer Intermediate "Building Blocks"
F(CF2CF2)nl Telom er A Iodide
n = 2 -8
F(CF2CF2)nCH2CH2l Telom er B Iodide
F(CFpCFp)nCH=CH2 Telom er B Olefin
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Actual Process practice varies by company
Do not use or add PFOA in the process
Generally, these processes are closed and PFOA creation &/or emissions are expected to be de minimus
Manufacturing activities occurring within the U.S. will be communicated to EPA by individual companies under confidentiality
Telomer Research Program
Process
TRP member companies will meet with you individually to describe their U.S. Telomer manufacturing processes and exposure / release information
Initial discussions within one month
Need EPA contact to set meeting date/time
2003-02-03, page 14
JJT
Develop a Telomer industry view of the product trails for Textiles, Carpet and Paper and a mass balance for each
Generic process for article treatment Identify potential release points Develop Predicted Environmental Concentrations from this work 4 - 6 months post agreement on work plan mass balance computation
Environmental Releases
8-2 alcohol atmospheric degradation pathway(s); report in 2 months
2003-02-03 , page 15
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Telomer Research Program
Telomer Production Data - Draft
Global Telomer A equivalents produced in 2000-2002 approximately 5- 6.5 Million kg/yr
Regional Product Distribution : North America - 40%
Europe
- 30%
Asia Pacific - 30%
Polymers : 80% of total product manufacture
Preliminary Data Analysis 85% of 8-Fluorinated Carbon based products are polymeric
2003-02-03, page 16
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Telomer Research Program
Issues for Discussion
Feedback and Alignm ent: 8-2 Telomer B Alcohol Workstreams - 2003
. Pharmacokinetics . Further mammalian toxicology tests (i.e.muiti-gen) . Environmental Fate Studies . Environmental Effects Studies
Screening Studies
. Blood data . Biodegradation
2003-02-03 , page 17
IP
Telomer Research Program
8-2 Telomer B Alcohol-14C Metabolism
pharmacokinetics studies (18 months) interim reports when sections are completed
Degradation
ready biodegradation study further studies to follow welcome protocol review and dialog on environmental
relevance
Feedback and Alignment
2003-02-03 , page 19
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Modified OECD 301D Closed Bottle Test - a Mass Balance
Investigation with Radiolabled Substance 2c7 f1514cf2 ch2 ch oh
Test design
inoculum from domestic sewage sludge no headspace to avoid volatilisation losses sorption to test system is taken into account ion selective electrode to monitor the formation of fluoride putative metabolites such as F(CF2)8CH2COOH, F(CF2)7CF=CFCOOH,
F(CF2)7COOH will be quantified Analytical methods will meet FDA & EPA data accuracy and precision guidelines
Results from preliminary investigations with cold material
loss of parent compound was monitored by GC-MS no fluoride was detected up to LOQ of 1 pg/L after 28d of test duration results show no PFOA
2003-02-03 , page 20
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Modified OECD 301D Closed Bottle Test - a Mass Balance Investigation with Radiolabled Substance (cont.)
Timing with Radiolabeled study material
Investigation will start at the beginning of March 2003 Duration about 6-8 weeks
Results
Results should be available at the beginning of May 2003 Draft report should be available in June 2003
2003-02-03 , page 21
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Telomer Research Program
Telomer-Containing Polymeric Products
Develop a framework and test strategy to evaluate abiotic and biotic transformation of telomercontaining polymers
Discussion and Alignment for Path Forward Available Immediately For Discussion
2003-02-03, page 22
AS.
Telomer Research Program
Proqram and workstreams agreements between EPA andj ' VTRn Pn
. Mechanism and timing for resolution
Identification of spokespersons and contact points for EPA and TRP
Meeting Open Items -Resolution path forward
Next Steps and Meeting
2003-02-03 , page 23
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