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SEDAG Going Forward

Posted By Tamara L. Sorell, Tuesday, January 12, 2016

Happy New Year from SETAC Sediment Advisory Group!  It’s time to start thinking about activities and ideas for 2016.  As most of you know, we have several working groups under the SEDAG umbrella.  We are planning a new Risk Management (Remediation) working group (information about that will be sent separately). 

Normally we meet at the annual SETAC North America and Europe meetings.  Should we be sponsoring activities at local Chapter meetings?  Holding periodic calls?  Sponsoring webinars?  Please post any ideas for other groups or activities.  Thank you!

Tags:  2016 

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SEDAG Meeting at SLC

Posted By Paul K. Sibley, Monday, October 26, 2015
Dear SEDAGers;

SETAC Salt Lake City is less than a week away. For those of you who plan to attend the meeting, this is a reminder that the SEDAG meeting will be held Wednesday from 7:00 to 8:30 in Room 251F. The agenda for the meeting is listed below. I look forward to seeing you there!

Cheers,
Paul Sibley

Agenda:

1) Brief update on the years activities - Paul Sibley
2) The spiked sediment initiative (update and focus) - Steve Bay
3) Discussion on the new Sediment Management Workgroup - Tamara Sorell
4) Harmonization of freshwater sediment toxicity methods - Chris Ingersoll
5) New SEDAG chair needed and new SEDAG steering committee members needed
6) Session announcements for SETAC Europe and call for sessions for SETAC 2016 in Orlando.
7) Other?

This post has not been tagged.

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Call for abstracts SETAC Europe: Future challenges for the effect and risk assessment of plant protection products with respect to sediment organisms

Posted By Trudy Watson-Leung, Friday, October 09, 2015

Dear SEDAG Colleagues;

 It is my pleasure to invite you to submit an abstract for a platform and/or poster presentation in the session on Future challenges for the effect and risk assessment of plant protection products with respect to sediment organisms at the next SETAC Europe Annual Meeting in Nantes, France, 22-26 May 2016. You will find the session summary attached to this message.

 The session will be chaired by:

 Daniel Faber - Bayer CropScience AG

Paul Sibley - University of Guelph

Theo Brock - Alterra Wageningen

Hank Krueger - Wildlife International

 

Please note that the call for abstracts will be open 5 October 2015 and the deadline for submission will be November 25, 2015.

 Thanks in advance for your interest. We hope to see you at the SETAC Europe 2016 Annual Meeting in Nantes!"

 Sincerely,

 Daniel, Hank, Theo, and Paul

 Attached Files:

Tags:  2015  Nantes  SETAC-EU 

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SEDAG and ASTM E50.47: Meetings at Salt Lake City

Posted By Trudy Watson-Leung, Wednesday, October 07, 2015

1) SEDAG meeting: Wednesday November 4, 2015 from 7 to 8:30 am in Room 251F in the Conference Center. Topics to be discussed will include the SEDAG activities to develop a spiked-sediment toxicity database and SEDAG activities to harmonized freshwater sediment toxicity methods.

2) ASTM Subcommittee E50.47 on Biological Effects and Fate:  Tuesday November 3, 2015,  7 to 8:30 am in Room 251F in the Conference Center (see attached draft agenda).  A primary discussion topic during the E50.47 meeting will be draft revisions to USEPA 2000 and ASTM E1706 dealing with methods for conducting sediment toxicity tests with freshwater invertebrates (including refined reproductive methods for amphipods and midges and new ASTM methods for freshwater mussels).

 

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Tags:  2015  ASTM  meeting  Salt Lake City  SETAC-NA 

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"Toxicity Testing in Sediments – Bioassays As Link Between Chemistry and Complex Benthic Community Testing for Sediment Quality Assessment": Session at the next SETAC EU Conference

Posted By Trudy Watson-Leung, Wednesday, October 07, 2015

Members of the SETAC Sediment Advisory Group (SEDAG):

Please consider submitting an abstract for the session: "Toxicity Testing in Sediments – Bioassays As Link Between Chemistry and Complex Benthic Community Testing for Sediment Quality Assessment“ (TOPIC: ET-Aquatic and terrestrial ecotoxicology) at the SETAC Europe Conference May 22 to 26, 2016 in Nantes, France. 

Abstracts are due by November 25, 2015.

Ute Feiler (Feiler@bafg.de) and Sebastian Höss  (hoess@ecossa.de)

 

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Tags:  2015  Nantes  SETAC-EU 

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Iron in Sediments

Posted By Trudy Watson-Leung, Wednesday, September 23, 2015
Updated: Wednesday, September 16, 2015

An inquiry about what research is being done on iron in sediments was posed to the Science Advisory Group listserve and it seemed like a valid question to pose to the Sediment Advisory Group as well.  Some of the responses that have been recieved so far are below.  I hope this information will be useful to some of you and if you have anything to add please reply to this blog.    

 

From Thomas Seal from FDEP Water Quality Assessment Program:

The Florida Depart of Environmental Protection's Watershed Monitoring program has hundreds of iron results from lake sediments throughout the state, collected from both large and small lakes for over ten years now.  We use the element iron, as well as aluminum, to normalize our trace metal data, thus ruling out those samples that are naturally higher in trace metals due to their higher clay (hence Al and sometimes Fe) content. 

 

The freshwater sediment normalization tool is available at this website....

 

http://www.dep.state.fl.us/water/monitoring/fwseds.htm

 

The freshwater sediment normalization tool was developed for FDEP under contract with a private dredging and engineering firm in Jacksonville, Taylor Engineering.  But the employee who mainly developed it (Dr. Steven Schropp) worked for FDEP in the early 1990s before he was hired by Taylor.  We have a companion tool for the state’s estuarine sediments (Windom and Schropp 1988) , but to develop that tool we did not collect iron data, only aluminum.

 

If you want to see the FDEP iron data, please contact Thomas Seal (Thomas.Seal@dep.state.fl.us) or Aisa Ceric.

 

From Ed Swain of the Minnesota Pollution Control Agency:

 We surveyed over 100 shallow freshwater systems in Minnesota, and measured iron both in porewater and bulk sediment for our study on how sulfate is converted into hydrogen sulfide, which can be toxic to wild rice.  Our interest is in the iron that is available to detoxify porewater sulfide through precipitation of relatively insoluble FeS compounds.  So, rather than quantify sediment iron with a strong acid digestion, we estimated redox-active iron by a 30-minute extraction with relatively weak HCl (0.5 N).  We modeled the net conversion of sulfate in surface water into porewater sulfide via structural equation modeling, which found that conversion of sulfate to sulfide is limited by sediment TOC, presumably because sulfate-reducing bacteria are limited by the availability of organic matter.  The net concentration of sulfide in porewater is then controlled by the availability of redox-active iron in the bulk sediment (we found that the concentration of porewater iron had little predictive power; porewater iron is less than 1% of the redox-active iron in the bulk sediment).

 

Our draft proposal for protecting wild rice from excess sulfate can be found at:

http://www.pca.state.mn.us/r6wxpf9

 

From Tom H. Gries, NEP QA Coordinator for the Environmental Assessment Program:

I did a quick search of Ecology's EIM database.  There are 1000's of records associated with analyses of iron in samples of both freshwater and marine/estuarine sediments.

Records may reflect slightly different matrices (e.g., stormwater sediments) or methods.  And I noticed different units of measure.  But they're readily available: http://www.ecy.wa.gov/eim/index.htm

 

From Steven Bay of the Toxicology Department Southern California Coastal Water Research Project:

We include iron in our analyte list for our regional monitoring program and thus have hundreds of data points for southern California marine and estuarine waters.  We have used the data previously to develop regression relationships to normalize other metal concentrations to account for natural background.  Haven't done any spiked toxicity studies with iron.

 

 

Tags:  discussion  iron 

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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

Tags:  spiked sediment  working group 

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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)

Tags:  2015  Salt Lake City  SETAC-NA 

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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

 

 

Tags:  2015  Salt Lake City  SETAC-NA  spiked sediment 

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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)

Tags:  2014  Meeting Minutes  SETAC-NA  Vancouver 

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