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Invitation to Participate on Spiked Sediment Toxicity Database Working Group

Posted By Trudy Watson-Leung, Monday, June 29, 2015

SEDAG Members:

 SEDAG has initiated a project to develop an open access and collaborative database of toxicity data from test using chemical-spiked sediment.  We had some initial discussions regarding this project at the November 2014 Vancouver SEDAG meeting and several SEDAG members expressed interest in participating in the effort (either to develop the database structure or to contribute content).  

I would like to continue this process and work with interested members to develop a draft version of this database over the next few months.  We are planning to hold a series of web meetings/conference calls over the next two months to develop this idea into a product for review by SEDAG at a future meeting.  

If you would like to participate in these meetings to develop the design, please send me an email with your contact information by Friday, July 3.  

I will then follow up with the respondents to schedule an initial  2-hour web meeting in mid-July.  This first meeting will discuss the scope of the project and identify a process/schedule for moving forward.

 Please send you responses directly to me at  steveb@sccwrp.org by July 3.

 Thanks for your support of this project,

 Steve

------------------------------

Steven Bay

Prinicipal Scientist, Toxicology Department

Southern California Coastal Water Research Project
3535 Harbor Blvd, Suite 110

Costa Mesa, CA  92626

 steveb@sccwrp.org

Phone: 714-755-3204

Fax: 714-755-3299

www.sccwrp.org

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MAY 27th abstract submission deadline! Five proposed half-day SEDAG sessions for Salt Lake City, Utah

Posted By Trudy Watson-Leung, Wednesday, May 06, 2015
The SEDAG Steering Committee is pleased to announce five proposed half-day sessions for the SETAC meeting in Salt Lake City Utah November 1-5, 2015 associated with the SEDAG:

1.          Design and Use of Spiked Sediment Toxicity Tests to Improve Environmental Management Decision Making.

2.          The Continuing Evolution of Sediment Toxicity Methods and Data Interpretation.

3.          Site Assessments of Contaminated Sediment.

4.          Risk Management of Sediments.

5.          Groundwater-to-Surface Water Interface (GSI) Investigations for Sediment Characterization and Ecological Risk Assessment.

Please see the summary below for a description of each of these proposed sessions.


As members of the SEDAG, we are contacting you in order to recruit individuals that have an interest in participating in these sessions. If you have a topic in mind that you would like to present as either a platform or poster presentation in these sessions, we encouraged you to submit an abstract through the online submission site by the close for open submissions on May 27, 2015 (http://slc.setac.org/program/scientific-program/abstract-submission/).  In advance of your submission, please let the session chairs know if you would like to discuss a potential topic to be included in the session.


Please note the following regarding the sessions and submission of abstracts:

1.          The sessions are considered conditional until the abstract review committee meets (June 22-25) to review abstracts and create the final program.

2.          All abstracts for the sessions must be submitted through the online submission site preferably prior to May 27 for possible inclusion in a session. A non-refundable fee will be charged for any abstract submitted between May 27 and June 10. No abstracts will be accepted after June 10. Registration for the meeting opens on June 29.

3.          This invitation to submit an abstract to a session does not guarantee acceptance or placement in the session. In addition, recruited presenters must register for the meeting, pay applicable registration fees and attend the meeting in order to present.

Please let us know if you have any questions regarding these sessions.


Sincerely,

Members of the SEDAG Steering Committee

******************

Proposed session associated with the SETAC Sediment Advisory Group for SETAC North America in Salt Lake City, Utah on Nov 1 to 5, 2015


1. Design and Use of Spiked Sediment Toxicity Tests to Improve Environmental Management Decision Making. Sediments play a key role in determining fate and effects of most environmental contaminants. Laboratory toxicity tests with spiked sediments are used to investigate these processes and inform decisions for managing the environmental risk from both marine and freshwater systems. Researchers attracted to this session will present advancements in the design and use of spiked sediment toxicity testing, as well as results of studies that improve our understanding of the effects of specific contaminants or geochemical factors on aquatic life. Presentations will include: sediment spiking methods and exposure characterization, use of results for remedial decision making, assessing the influence of mixtures and confounding factors, and application of spiked sediment tests to assess ecological risks from “Contaminants of Emerging Concern” (e.g., pesticides, pharmaceuticals, and algal toxins) and those associated with more historical toxicants (e.g., metals, PAHs). Chairs: Steve Bay, Southern California Coastal Water Research Project (Steveb@sccwrp.org, 714-755-3204) and Lisa Taylor/Environment Canada (Lisa.Taylor@ec.gc.ca, 613-991-4062)


2. The Continuing Evolution of Sediment Toxicity methods and Data Interpretation. Sediment toxicity laboratory methods have undergone refinement and evolution over the course of the last few decades. These methods were initially developed by multiple organizations with varying objectives making standardization of the methods a challenging endeavor. There are currently a number of acute and chronic sediment toxicity methods as well as methods to assess bioaccumulation of chemicals using both freshwater and marine organisms. Methods have historically been used to assess the toxicity of field-collected sediment samples or the effects of a specific chemical through dosed sediment exposures. Due to the complex nature of these methods, there is a need to refine some of the standard methods to improve the consistency, reproducibility and quality of the results. The general goal of this session will be to present research on the refinement of current methods for conducting laboratory sediment toxicity tests, development of new methodology and discuss challenges in test conduct as well as data interpretation. Potential presentation are as follows: (1) methods for culturing or collecting test organisms, (2) effects of testing variables on organism performance, (3) results of inter-laboratory testing with a focus on chronic methodology using midge, (4) evaluation of toxicity identification evaluation data (5) alternate taxa or alternate toxicity endpoints (6) challenges in analyzing sediments for chemical specific concentrations and (7) interpretation and use of test results from a regulatory standpoint. Chairs: Christian Picard (Smithers Viscient, Wareham MA, cpicard@smithers.com, 508-295-2550), Chris Ingersoll (USGS, Columbia MO, cingersoll@usgs.gov, 573-876-1819) and Curtis Eickhoff (Maxxam Analytics , Burnaby, BC, CEickhoff@maxxam.ca, 604-638-5033)


3. Bioaccumulation in Management and Regulation. The purpose of this session is to feature new scientific knowledge in the area of bioaccumulation that can improve the management and regulation of environmental contaminants. The session will present new bioaccumulation studies, as well as applications of existing knowledge with the purpose of improving environmental management and regulation. This session has been designed to present research that advances the science of bioaccumulation or applies bioaccumulation science and models to improve management and regulation of human health and ecological risks from water and sediment contaminants. Chairs: Doris Vidal-Dorsch (dorisv@sccwrp.org) and Frank Gobas (gobas@sfu.ca).


4. Risk Management of Sediments. This session is intended to bring together presentations about how advances in risk, sustainability, and remediation tools have been or can be integrated into management decisions at contaminated sediment sites. Recent guidance documents describe sophisticated sediment assessment and remediation techniques, including sustainable approaches, but provide little or no specificity on how they can be incorporated into remedial action objectives (RAOs) and remediation goals (RGs). Sophisticated assessment results may be difficult to apply quantitatively, and back-calculated risk-based clean-up goals are often unrealistically low, not attainable, or not sustainable. There are few formal sediment quality standards, and screening levels do not make appropriate risk management objectives. Therefore, sediment management decisions are typically site-specific and vary widely among sites. This session kicks off a new SETAC Sediment Advisory Group (SEDAG) work group that will address the integration of recent advances in risk, sustainability, and remediation tools into risk management decision making at sediment sites. Topics of interest include development of RAOs; calculation of RGs using human health risk models, ecological risk food chain models, bioassay/sediment toxicity dose-response information, and non-bulk sediment endpoints (such as pore water); sediment remediation technologies such as conventional tools (removal, capping), innovative technologies/pilot studies (such as in situ stabilization), and combined approaches; development, implementation, and advances in remedy effectiveness monitoring; risk communication and stakeholder engagement; and regulatory trends and precedents in sediment management. Chair: Tama Sorell, tsorell@brwncald.com)


5. Groundwater-to-Surface Water Interface (GSI) Investigations for Sediment Characterization and Ecological Risk Assessment. For contaminated sites adjacent to water bodies, the environmental impact of site-related contaminant releases to aquatic habitats, including contaminated groundwater to surface water discharges, have become key assessment components of site investigations. Consequently, regulatory attention to groundwater-to-surface water interface (GSI) investigations, and related influences on ecological risks, has increased significantly in recent years. While the most common focus for GSI investigations is shallow sediment pore water collection for transport verification and exposure estimation/risk assessment, GSI studies also require a keen understanding of the entire transport pathway and a refined conceptual site model. Therefore, GSI investigations are interdisciplinary endeavors that require an integration of a variety of technical expertise (for example, hydrogeology, analytical chemistry, ecotoxicology, and unique sampling techniques). This session will offer an opportunity to display: the latest pore water sampling techniques; GSI transport pathway analyses; the integration of GSI data into ecological risk assessments; and/or the use of complimentary investigation components that enhance GSI understanding (for example, benthic community assessments, exposure estimates, hyporheic profiling). This session will also be a venue to review investigation case studies and experiences and gain insight into regulatory opinions on GSI investigations and related studies for use in site investigations. Chairs: Dan Lavoie/CH2M HILL (Daniel.Lavoie@CH2M.com, 202-265-2906) and Tim Canfield/USEPA (Canfield.Tim@epa.gov, 580-436-8535)

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Sediment Session Proposal for Salt Lake City 2015

Posted By Lisa N. Taylor, Tuesday, February 17, 2015

Hello Sediment-folk,

Here is a proposed session  that was submitted for the 36th SETAC annual meeting in Salt Lake City 2015.

 

Title: Design and Use of Spiked Sediment Toxicity Tests to Improve Environmental Management Decision Making

 

Description: Sediments play a key role in determining fate and effects of most environmental contaminants.  Laboratory toxicity tests with spiked sediments are used to investigate these processes and inform decisions for managing the environmental risk from both legacy contaminants and a rapidly expanding list of “Contaminants of Emerging Concern”. Researchers attracted to this session will present advancements in the design and use of spiked sediment toxicity testing, as well as results of studies that improve our understanding of the effects of specific contaminants or geochemical factors on aquatic life. Presentations will include: sediment spiking methods and exposure characterization, use of results for remedial decision making, assessing the influence of mixtures and confounding factors, and application of spiked sediment tests to assess ecological risks from contaminants of emerging concern, for example: pesticides, pharmaceuticals, and algal toxins.

 

Track: Aquatic Toxicology and Ecology

 

Session Type: Platform and Poster

 

Advisory Group: Sediment Advisory Group – SEDAG (Global)

This session is sponsored by SEDAG and has been identified by SEDAG as having the highest priority for inclusion in the Annual Meeting.

Please consider this session when submitting abstracts for platforms and posters this spring! 

Thanks from your session chairs: Steven M. Bay and Lisa N. Taylor

 

 

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Summary of SETAC SEDAG meeting Nov 11 2014 in Vancouver BC

Posted By Trudy W, Tuesday, January 20, 2015

SETAC Sediment Advisory Group (SEDAG):

 

The SEDAG met Tuesday morning November 11, 2014 from 7 to 8 am at the 35th annual meeting of SETAC North America in Vancouver, British Columbia. The meeting was attended by about 50 individuals (standing room only!). Topics discussed during the SEDAG meeting included:

 

1. Listing of the members of the SEDAG Steering Committee:

 

a. Academia:Paul Sibley Canada University of Guelph, Jing You China Chinese Academy of Sciences, Jussi Kukkonen Finland University of Jyväskylä

b. Industry: Amy Oen Norway Norges Geotekniske Institutt, Frank Dillon USA CH2M Hill, Shaun Roark USA GEI Consultants

c. Government: Chris Ingersoll USA USGS, Lisa Taylor Canada Environment Canada, Steve Bay USA SCCWRP, Stuart Simpson Australia CSIRO (Current Chair of SEDAG)

d. Ad hoc: Greg Schiefer USA SETAC North America

 

2. Reports from current Working Groups:

 

a. Harmonization of methods for assessing contaminated sediments. Chair: Chris Ingersoll (cingersoll@usgs.gov). Draft revisions to USEPA and ASTM methods for conducting whole-sediment toxicity tests have been completed and will likely be available for outside review early in 2015. The revisions will include (1) updated guidance on sediment and new guidance on water testing with the amphipod Hyalella azteca and the midge Chironomus dilutus focused refining reproduction methods (in USEPA and in ASTM) and (2) providing new guidance on mussel testing (in ASTM). The plan is to finalize revisions to the USEPA and ASTM methods by the fall of 2016. Environment Canada is planning to provide guidance on reproduction testing with Hyalella azteca in this same time frame.

 

b. PAH bioavailabiity and toxicity in sediments. Chairs: Peter Van Metre, Charlene Liu (pcvanmet@usgs.gov). No updates were available.

 

c. Behavior, fate and bioavailability of particle bound contaminants in changing environments. Chair: Susanne Heise (susanne.heise@haw-hamburg.de). No updates were available.

 

3. New Working Group established:

 

Compilation of contaminant-spiked sediment toxicity data (SETAC database). Chair: Steven Bay (steveb@sccwrp.org). An overview of the approach for summarizing spiked sediment toxicity data was provided. Over the next year, Steve would like the Working Group to compile some representative case studies for freshwater and marine sediments that could be added to the database template. This information would be used to finalize a template for compiling spiked sediment toxicity data in a database. The current plan would be to have the databased maintained by the SEDAG on the SETAC website (this needs to be discussed with SETAC). Individuals interested in participating in the Sediment-spiking Toxicity Database Working Group should contact Steve.

 

4. New sediment toxicity testing methods advisory groups formed as part of the Harmonization Working Group (individuals interested in these new advisory groups should contact the individuals below):

 

a. Leptocheirus plumulosus advisory group (LAG; marine/estuarine amphipod). Point of contact: Curtis Eickhoff (ceickhoff@maxxam.ca). LAG met Thursday Nov 13 and identified research needs for culturing and testing with Leptocheirus. Individuals interested in participating in the LAG should contact Curtis.

b. Chironomus advisory group (CAG; midge). Point of contact: Chris Ingersoll (cingersoll@usgs.gov). An email will be sent to the SEDAG seeking individuals interested in participating in the CAG. Specifically, the CAG would like to identify (1) labs with experience in conducting toxicity tests with midge starting with young instars (e.g., 1st or 2nd instar, less than about 7 days old) and (2) individuals interested in being added to an email list that would receive periodic updates on the progress of the CAG.

 

Sincerely,

 

Paul Sibley and Chris Ingersoll (for Stu Simpson, Chair of SEDAG)

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Risk Management Work Group?

Posted By Tamara L. Sorell, Thursday, November 20, 2014

Hello SEDAG'ers.  It was nice to participate in the meeting last week.

Given the sparse response to the question posed in the meeting about who works in risk management, I'd like to propose a work group that addresses this issue.  The drivers as I see them are

  • There are few formal sediment quality standards, and screening levels do not generally make appropriate risk management objectives.
  • Many sediment clean-ups are driven by ecological risk, which as we all know can be tricker to assess then human health risk.
  • Risk endpoints (such as toxicity tests) often do not provide dose-response information useful for developing clean-up goals.
  • Existing guidance documents (such as the ITRC tech regs of 2011 and 2014, in which I was an active participant) describe investigation/remediation tools and technologies, but provide no guidance on how to set remedial action objectives or develop PRGs
  • There are in ancreasing number of sedment sites and mega-sites, with overwhelming remedial challenges and costs.  There is a high need for systematic tools  develop realistic RAOs.

I will be happy to spearhead if there are others interested in this aspect.  Thanks, Trudy, for promoting the use of the blog!

Tamara Sorell  Brown and Caldwell tsorell@brwncald.com

 

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Upcoming Sediment Meetings at SETAC Vancouver

Posted By Trudy Watson-Leung, Monday, October 27, 2014

Hello Everyone,

Stuart Simpson (Chair of the SETAC SEDAG) and Paul Sibley and Chris Ingersoll (Members of the SETAC SEDAG Steering Committee) would like to highlight some of the sediment meetings and sediment sessions planned for the upcoming meeting of SETAC at the Vancouver Convention Center.

 

Please contact the individuals listed below for additional information regarding these planned events.

 

1. SETAC SEDAG

When: Tuesday November 11 from 7 to 8 am in Room 116/117

Discussion topics: (1) Introduce new members of the SEDAG steering committee and future plans for the SEDAG; (2) Draft revisions planned to USEPA/ASTM freshwater sediment toxicity methods; (3) Development of a sediment-spiking toxicity database. Point of contact: Paul Sibley (psibley@uoguelph.ca)

2.  ASTM Subcommittee E50.47 on Biological Fate and Effects

When: Wednesday November 12 from 7 to 8:30 am in Room 116/117

Discussion topics: (1) Status of E50.47 standards; (2) Draft revisions planned to USEPA/ASTM freshwater sediment toxicity methods; (3) Methods for culturing and conducting chronic toxicity tests with the midge Chironomus dilutus. Point of contact: Chris Ingersoll (cingersoll@usgs.gov; see attached agenda)

3. Methods for conducting whole-sediment toxicity tests with the amphipod Leptocheirus plumulosus

When: Thursday November 13 from 2 to 4 pm in Room 306 (refreshments courtesy Maxxam Analytics)

Discussion topics: Challenges facing labs conducting chronic Leptocheirus 28-d sediment toxicity tests with spiked sediments for pesticide registrations. The meeting will provide an opportunity for interested parties to share information. Discussions will include potential reasons for why the test has been difficult to conduct and ideas about how to make the test more successful and easier to perform by multiple laboratories. Point of contact: Curtis Eickhoff (ceickhoff@maxxam.ca)

4.  Refining Methods for Conducting Laboratory Whole-Sediment Toxicity Tests (platform session and poster session). Point of contact: Christian Picard (cpicard@smithers.com)

When: Platform session, Thursday November 13 from 8 to 11:15 am in Ballroom C

1.     649: Inter-lab testing of Hyalella azteca water and sediment methods. 1: Background and overview of the 42-d survival, growth and reproduction test, T. Norberg-King

2.     650: Inter-lab testing of Hyalella azteca water and sediment methods. 2: Results from 10- to 42-d tests conducted with water-only and sediment substrates, C. Ivey

3.     651: Measuring up: how does a Hyalella azteca reproduction test conducted entirely in sediment compare?, L. Taylor

4.     652: Feasibility of using Centroptilum triangulifer larvae in sediment toxicity tests, J. Lazorchak

5.     653: Chronic sediment toxicity testing with the estuarine amphipod Leptocheirus plumulosus; trials and tribulations, M. Bradley

6.     654: The Co-dependency of growth and reproduction. A closer look at the 28-d Leptocheirus plumulosus survival, growth and reproduction test, C. Eickhoff

7.     655: Mucking up equilibrium partitioning theory: How highly hydrophobic compounds pose additional challenges with interpreting sediment test results, T. Valenti

8.     656: How can we enhance access and use of sediment toxicology data?, S. Bay

When: Poster session (All day Thursday November 13)

1.     RP085: Inter-lab testing of Hyalella azteca water and sediment methods. 3: Results from 10- to 42-d tests conducted with the new water-only method, T. Norberg-King

2.     RP086: Inter-lab testing of Hyalella azteca water and sediment methods. 4: Results from 10- to 42-d tests conducted with sediment substrates, C. Ivey

3.     RP087: You are what you eat: The effectiveness of three diets for rearing Hyalella azteca and the influence of diet on organism sensitivity, T. Watson-Leung

4.     RP088: Chronic sediment toxicity testing with the estuarine amphipod Leptocheirus plumulosus; trials and tribulations, M. Bradley

5.     RP090: Effect of mixtures on the acute toxicity of metals in sediments, E. Park

6.     RP091: Improving metal sediment toxicity testing: methods for more environmentally relevant exposures, A. Harrison

7.     RP092: Towards a more rigorous paradigm for conducting sediment toxicity identification evaluations, H. Bailey

8.     RP093: Tiered testing approach for whole-sediment toxicity tests, J. Collins

9.     RP094: A synopsis of chronic sediment toxicity data for benthic organisms and agrochemical products, C. Picard

Other sessions focused on sediments:

5.     Platform session Tuesday November 11 (pm) and all-day poster session: Ultra-Low Detection Techniques for Hydrophobic Organic Contaminants in Water and Sediment. Chairs: Xiaoxia Lu, Keith Maruya

6.     Platform session Wednesday November 12 (am and pm) and all-day poster session: Remedy Effectiveness Assessments and Monitoring Contaminated Sediment Remediation. Chairs: Marc Mills, Amy Mucha, David Walters

****

Chris Ingersoll

Columbia Environmental Research Center, U.S. Geological Survey

4200 New Haven Rd, Columbia, MO 65201, 573/876-1819 (work), -1896 (fax)

cingersoll@usgs.govhttp://igskrgcbwb01050/StaffMembers.aspx?StaffMemberId=192

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Hardness tolerance of different strains of Hyalella azteca

Posted By Trudy Watson-Leung, Tuesday, November 19, 2013
I was wondering if anyone has done an assessment of hardness tolerance of the common laboratory (US and Canada, as per Major et al 2013) strain of Hyalella azteca? 

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