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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 ( 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 ( No updates were available.


c. Behavior, fate and bioavailability of particle bound contaminants in changing environments. Chair: Susanne Heise ( No updates were available.


3. New Working Group established:


Compilation of contaminant-spiked sediment toxicity data (SETAC database). Chair: Steven Bay ( 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 ( 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 ( 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.




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


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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.



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 (

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 (; 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 (

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

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)


Download File (DOC)

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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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