|
 |
|
Contaminated Sediment News
Issue 33 - January 2003
Welcome to the Contaminated Sediments News, a monthly review of recent
journal articles, issues in the press, upcoming conferences, and other
news. This website will replace the Contaminated Sediments Newsletter,
which was published quarterly through the summer of 2000. Items for the
CS News are chosen from the results of a detailed search of a number of
scientific and technical publication databases, as well as from searches
of media publication databases (including newspapers and magazines).
Check back to this site frequently to see each new issue of the Contaminated
Sediments News, and visit the CS News
Archive to find past issues.
Note: The summaries found on this website are based on articles from
the press and from peer-reviewed publications, and they represent the
opinions of the original authors. The views of authors expressed herein
do not necessarily state or reflect those of the United States Government,
and shall not be used for advertising or product endorsement purposes.
Reference herein to any specific commercial products, process, or service
by trade name, trademark, manufacturer, or otherwise, does not necessarily
constitute or imply its endorsement, recommendation, or favoring by the
United States Government.
Current News
Scientists Find Geochemical Fingerprint of World Trade Center Collapse
Recorded in New York Harbor Sediments
Dust and debris deposits associated with the September 11, 2001, terrorist
attack on the World Trade Center have left a distinct fingerprint on the
sedimentary record in New York Harbor, scientists have found. Their results
appear in the January 21, 2003, issue of the journal EOS, a publication
of the American Geophysical Union. This geochemical fingerprint, the researchers
believe, may facilitate a better understanding of the short-to-medium
term processes that affect the input, dispersal, and fate of particles
and contaminants in the lower Hudson River.
For more information, the complete article is located on the website
of the National
Science Foundation: Office of Legislative and Public Affairs. 
Summarized Journal Articles
- Evaluation of time-to-effects as a basis for
quantifying the toxicity of contaminated sediments –
Sediment tests are conducted with undiluted whole samples because of
uncertainties in appropriate dilution procedures and materials. This
makes traditional concentration-response approaches impossible to use
as approaches to determine the toxic effects of samples eliciting mortality
(100 percent effect) using a predetermined time interval (usually 10d).
Measuring the time necessary to produce effects (the time-to-effects
approach) is an alternative approach that can be used to determine relative
toxicity. In this study, the time-to-effects approach was used to determine
the toxicity of freshwater sediments to the invertebrates Hyalella
azteca and Chironomus tentans. Destructive sampling of replicate
test chambers was conducted over the course of a "standard"
10-d assay using five sediments (four test samples and a control sediment).
After exposure to the control sediment and a non-toxic test sample the
animals demonstrated excellent recovery rates, especially when organisms
were small. When exposed to three increasingly toxic test sediments,
both H. azteca and C. tentans exhibited a reasonable,
typically monotonic, time-to-death relationship. Each of these three
tests caused significant mortality by 10 d. These studies reveal that
the time-to-effects approach can be used to measure the relative toxicity
of contaminated sediments. The time-to-effects approach was a useful
as a comparison method to determine the relative toxicity of each of
the three samples. The approach was also useful in documenting the reduced
toxicity one sample exhibited when storage time was extended.
Source: DeFoe, D. et al.; Evaluation of time-to-effects as a basis
for quantifying the toxicity of contaminated sediments; Chemosphere
51 (1): 1-5, 2003.
- Recovery of soft sediment
communities and habitats following physical disturbance
– Disturbances in habitats characterized by soft sediments can
be fatal to resident organisms. Methods currently used to determine
the impact of disturbances on benthic organisms are costly and time
consuming. Such methods require analysis of several samples over time
as the disturbed area recovers to control conditions. This study evaluated
the effects of two levels of physical disturbance on the plants and
animals living in a sheltered sand flat. The goal was to determine the
predictability of recovery of the resident organisms based on the habitat's
physical characteristics. Recovery time from minor disturbances was
found to be complete within 64 days. Habitats experiencing higher intensity
disturbances required up to 208 days to recover. The percentage of organic
content and sediment granulometry did not significantly affect the outcome
of the experiment in either scenario. Observations revealed a decrease
in the water depth remaining in the disturbed pits over time and correlated
with the community structure's temporal changes. Even though water depth
was the crudest physical parameter monitored, it was most helpful in
predicting the recovery process of resident organisms and may be an
indicator of the other habitat changes that are occurring simultaneously.
With further study, quantitative measurements of physical features of
soft sediment habitats may be integrated into a cost and time effective
method that can be used to determine the recovery time of soft sediment
habitats after physical disturbances.
Source: Dernie, K.M. et al.; Recovery of soft sediment communities
and habitats following physical disturbance; Journal of Experimental
Marine Biology and Ecology 285-286: 415-434, 2003.
- 2-D optical quantification
of particle reworking activities in marine surface sediments
– Fuanal activities causing particle and solute transport may
have a large impact on the speed and manner in which organic matter
mineralizes during early diagenesis in surface sediments. A common method
of quantifying benthic biological reworking activities uses the calculation
of a biodiffusion coefficient (Db) taken from model predictions of 1-dimensional
tracer distribution patterns. This method, typically used with measurements
taken over several days, averages the overall transport mechanisms from
3-dimensional to 1-dimensional on a centimeter scale, which is costly
and time-intensive. This article examines a new technique that relies
on nondestructive screening of fluorescent particles (luminophores)
with optical discrimination and CCD camera detection of fluorescence
(2-dimensional). The optical reworking coefficient (ORC), estimated
from the 2-dimensional luminophore distribution patterns, was calculated
(ORC=27.4+/-9.1 cm-2 h-1; n=24) at a site with a dense population of
the brittle star Amphiura filiformis and a high biodiffusion
coefficient (obtained from 1-dimensional distributions; Db=35.5+/-3.7
cm-2 year-1; n=3). This optical detection technique is relative, has
a short completion time, and is able to detect small-scale particle
movements over short periods of time (minutes or less). This nondestructive
2-dimensional approach to detect particle movement may prove to be a
powerful tool in further transport studies of benthic fauna in surface
sediments.
Source: Gilbert, F. et al.; 2-D optical quantification of particle
reworking activities in marine surface sediments; Journal of Experimental
Marine Biology and Ecology 285-286: 251-263, 2003.
- Invertebrate biomarkers:
links to toxicosis that predict population decline –
Natural population changes may be predicted through the use of biomarker
measurements in aquatic invertebrates populations. Laboratory studies
have documented the use of biomarkers to provide rapid quantitative
predictions of toxicity upon individual organisms. At this time, the
use of biomarkers is not a replacement for traditional monitoring techniques,
but can be a useful supplementary approach to demonstrate links between
sublethal biochemical exposure and decreases noted in field population
studies. Future research studies will seek to use biomarker measurements
in aquatic invertebrates to predict changes in population size from
field measurements taken on individual organisms.
Source: Hyne, R.V. et al.; Invertebrate biomarkers: links to toxicosis
that predict population decline; Ecotoxicology and Environmental
Safety, In Press, 2003.
- Sampling marine pore waters
for Mn, Fe, U, Re, and Mo: modifications on diffusional equilibration
thin film gel probes – Pore water metal profiles
are key in explaining trace metal geochemical cycling and identifying
redox horizons. However, accurate pore water sampling can be difficult.
Disturbances at the sediment-water interface and oxidation occurring
during sampling are two common causes of inaccurate measurements. Diffusional
equilibration in thin films (DET) probes was tested as an alternative
method for obtaining pore water profiles in hopes of increasing sample
accuracy. This technique may prove especially useful for samples involving
redox-sensitive trace metals (U, Re, and Mo) in addition to Mn and Fe,
in coastal marine areas. Information gathered from solution equilibration
tests and laboratory core incubation experiments indicate that probes
in sediment need between 24-48 h to reach equilibration. Control tests
were conducted using three methods: slicing, centrifuging, and filtering
(in a nitrogen atmosphere). These methods all produced similar results.
The experiment conducted tests on two similar gel probe designs. In
the first design, the back of each gel probe was attached to PVC wedges.
This design facilitated better contact between the probe and sediments
and decreased the possibility for channels to form along the probe surface,
which allow vertical pore water transport. The second design removed
a modified face frame from the front of the probe. This design also
increased the contact between sediments and the probe's surface and
reduced the possibility of sediment disturbance during insertion. When
compared to unmodified probe designs, the probe attached to the PVC
wedge measured higher Fe concentrations, but all other metal profile
measurements remained similar. The probe with the removed face frame
did not record U and Mo concentrations that increased with depth, compared
with the 2 out of 3 unmodified probes that did record increasing concentrations.
The increasing concentrations may have been caused by irrigating burrows
supplying oxygen to reduced sediments, resulting in the oxidization
of previously reduced metals. However, the location of irrigating burrows
was mixed throughout the sampling area and would be expected to produce
similar results in each set of profiles. To gain further insight, the
information gathered through sliced/centrifuged profiles and data gathered
from probe profiles were compared. Peaks in the Re profiles, that may
indicate Re flux to the surrounding waters, were recorded in the sliced/centrifuge
profiles but could not be identified in either probe profiles or benthic
chamber measurements. The difference may be attributed to variations
at the sample site. Another possible hypothesis is that the centrifuge
released Re from pore structures, and thus would not be detected by
gel probes or benthic chambers, which tend to be less intrusive sampling
methods..
Source: Morford, J. et al.; Sampling marine pore waters for Mn,
Fe, U, Re, and Mo: modifications on diffusional equilibration thin
film gel probes; Journal of Experimental Marine Biology and Ecology
285-286: 85-103, 2003.
-
Polycyclic aromatic hydrocarbons disrupt axial development
in sea urchin embryos through a [beta]-catenin dependent pathway
– The developmental toxicity of creosote, a common wood preservative,
along with some of its polycyclic aromatic hydrocarbon (PAH) constituents
(phenantherene, fluoranthene, fluorine, pyrene, and quinoline) was
measured in this experimental system using sea urchin (Lytechinus
anemesis) embryos. Experimental data revealed that creosote and
PAHs disrupted [beta]-catenin regulation. The effects of the disrupted
[beta]-catenin regulation were demonstrated by the axial development
and patterning of the embryos. After exposure, the embryos developed
into exogastrulae with completely evaginated archentera. Experimental
results suggest the EC50 of creosote for complete exogastrulation
was 1.57 ppm, while the EC50s of the PAHs ranged from 0.41 ppm (2.0
[mu]M) to 4.33 ppm (33.5 [mu]M). The developmental disruptions of
the exogastrulate that developed from embryos exposed to creosote
and PAHs were similar to the vegetalization and exogastrulation that
result from lithium chloride exposure. High levels of nuclear accumulation
of [beta]-catenin by cells of creosote- and PAH-exposed embryos was
observed in immunological studies using antibodies against [beta]-catenin,
a multi-functional protein key to during embryonic development. Similar
results were reported in cell cultures of dissociated embryonic conducted
in the presence of these agents. It is possible that [beta]-catenin
accumulation is the means by which PAHs affect the different cell
types, especially since [beta]-catenin accumulation has also been
reported in cancer cell nuclei.
Source: Pillai, M.C. et al.; Polycyclic aromatic hydrocarbons
disrupt axial development in sea urchin embryos through a [beta]-catenin
dependent pathway; Toxicology 186 (1-2): 93-108, 2003.
-
Mussel transplantation and biomarkers as useful tools for
assessing water quality in the NW Mediterranean – Mussels
were used to determine potential impacts of pollutants found in sediments
located in the Mediterranean Sea. Mussels from an aquaculture farm
in a clean open bay were transplanted to different monitoring stations,
which included a reference site in Nice and Cannes (NW Mediterranean)
for one month. Several biomarkers were measured in the transplanted
mussels, including activities of glutathione S-transferase (GST; exposure
to organics), of catalase (exposure to oxidative stress) and of acetylcholinesterase
(inhibited by some pesticides) and the lipid peroxidation (thiobarbituric
acid reactive substances: TBARS). The condition index of the mussels
and concentrations of Cd, Cu and Zn were also measured. Results showed
seasonal variations in GST and catalase activities with higher levels
in June compared to October, and the condition index was also higher
in June than in October. According to each station or group of stations'
responses, principal component analyses performed with the whole set
of data separated the stations or groups of stations according to
the different biomarker responses. High TBARS levels and catalase
activity characterized the mussels from the Nice harbor in October
1999. In the Cannes harbor, however, animals presented very high copper
concentrations and GST activities in June 2000. At the reference site,
mussels generally had low enzymatic activities (except AChE activity),
peroxidation levels, and low heavy metal concentrations.
Source: Romeo, M. et al.; Mussel transplantation and biomarkers
as useful tools for assessing water quality in the NW Mediterranean;
Environmental Pollution 122 (3): 369-378, 2003.
- Metal concentrations in mussel Crenomytilus
grayanus and oyster Crassostrea gigas in relation to contamination
of ambient sediments – Coastal habitats of the northwestern
Sea of Japan were studied to determine relationships between contaminated
sediments and bivalve uptakes of metals because of the broad range of
contamination due to urban sewage. Looking at the soft tissues of mussels
and oysters and those in ambient sediments, the relationship between
Zn, Cu, Cd, Pb, and Ni concentrations was analyzed. In the mussel Crenomytilus
grayanus, there were significant increases of all metals, except
Ni, at concentrations of easily leachable metals in ambient sediments
higher than 2, 100, and 800 µg for Cd, Cu, and Zn, respectively.
The mussels accumulated Pb with no distinct threshold in Pb contamination
of sediments. After two months, C. grayanus that was transplanted
from a pristine to a contaminated locality increased in Pb up to 12%,
and Cu increased up to 68% of concentrations of these metals in the
contaminated local mussels. There was only an increase in Zn and Cd
concentrations in the excretory tissue, not in the somatic tissue, or
in the soft tissue as a whole. For monitoring of slightly and moderately
contaminated localities, such regulation of metal accumulation puts
limitations on the use of C. grayanus. The oyster Crassostrea
gigas, however, revealed definite accumulation of all metals, except
Ni, at moderate contamination of ambient sediments. Increases of Pb,
Zn and Cu concentrations in C. gigas slowed as contamination
of sediments increased, which might be due to physiological control
at very high metal concentrations in oyster soft tissue. Thus, the mussel
C. grayanus should function mainly as a monitor of heavy contaminated
localities, and the oyster C. gigas should be used as an indicator
of low and moderate contamination.
Source: Shulkin, V.M. et al.; Metal concentrations in mussel Crenomytilus
grayanus and oyster Crassostrea gigas in relation to contaminated
ambient sediments; Environment International, In Press, 2003.
-
Relationship between bioenergetics responses and organic
pollutants in the giant mussel, Choromytilus chorus (Mollusca:
Mytilidae) – Along the Chilean coast in spring
1998 and summer 1999, samples of Choromytilus chorus (giant mussel)
were collected at three sampling stations exposed to different degrees
of pollution. In controlled laboratory conditions, clearance rate,
absorption efficiency, and oxygen consumption of the mussels were
measured and related to analytical data on organic pollutants in their
tissues. Scope for growth (SFG) was used as a physiological index
to analyze the stress produced by pollutants existing at each site.
Individual mussels from San Vicente bay (highly polluted) showed negative
SFG values in spring and summer. These results showed severe stress
related to the accumulation of toxic compounds in their tissues. Specimens
from Corral bay had a medium level of pollution, while those from
Yaldad bay showed low pollution. Results of the study indicate that
the SFG of different populations of C. chorus was negatively correlated
to the tissue concentrations of organochlorines and polynuclear aromatic
hydrocarbons.
Source: Toro, B. et al.; Relationship between bioenergetics responses
and organic pollutants in the giant mussel, Choromytilus chorus (Mollusca:
Mytilidae); Aquatic Toxicology, In Press, 2003.
-
Evaluation of atmospheric transport as a nonpoint source of polycyclic
aromatic hydrocarbons in marine sediments of the Eastern Mediterranean
– This study evaluated the relationship of air-borne contaminants
to water column and sediment uptake of organic pollutants. Coastal
marine sediment, air, and seawater samples were collected at six sampling
stations in the Eastern Mediterranean Sea which are located away from
pollutant point sources. The sediment samples were examined in order
to determine polycyclic aromatic hydrocarbon (PAH), black carbon (BC)
and organic carbon (OC) contents. By evaluating the role of air-sea
exchange as PAH non-point source to the marine sediments, PAH contents
of gaseous and seawater samples of the study were established. The
average concentration of the total PAHs in the sediments ranged from
2.2 to 1056.2 ng g-1 dry weight. Average BC and OC contents varied
from 0.3 to 5.6 and from 2.9 to 21.4 mg g-1 dry weight, respectively.
[S]PAH concentration in the marine atmosphere ranged from 20.0 to
83.2 ng m-3. Air transport of PAHs to pristine marine sediments in
the Eastern Mediterranean was indicated by estimates of that air-water
exchange flux. Further, the importance of atmospheric input of PAHs
to sediments is also indicated by the significant correlation found
between the PAHs and the organic and soot carbon content.
Source: Tsapakis, M. et al.; Evaluation of atmospheric transport
as a nonpoint source of polycyclic aromatic hydrocarbons in marine
sediments of the Eastern Mediterranean; Marine Chemistry 80 (4):
283-298, 2003.
- Instrumental determination of organic carbon in marine sediments
– Using a carbon-hydrogen-nitrogen (CHN) analyzer for total carbon
content and diffuse reflectance infrared Fourier transform spectroscopy
(DRIFTS) for inorganic carbon (IC) content, a methodology is introduced
for the first completely instrumental determination of organic carbon
(OC) in marine sediments. No OC standard reference materials currently
exist; therefore, this study compared the results for OC from the proposed
method with those from more tedious methods, involving wet chemistry.
Researchers used the CHN analyzer concurrently with acid extract analyses
by an inductively coupled plasma atomic emission spectrometer to estimate
OC concentrations in samples. They also estimated OC with a dissolved
organic carbon (DOC) solution analyzer. There was no significant difference
found among the proposed method and currently used wet chemistry methods.
The results of this study found that the proposed DRIFTS method is cheap,
rapid and nondestructive.
Source: Tung, Joanne Wai Ting, and Peter A. Tanner; Instrumental
determination of organic carbon in marine sediments; Marine Chemistry
80 (2-3): 161-170, 2003.
- Benthic biogeochemistry: state of the art technologies and guidelines
for the future of in situ survey – As sediment and water are
sampled at the seafloor, brought to the surface, processed, and examined,
these elements can potentially be altered-chemically, physically, and
biologically. Because of this, in situ observations of relatively undisturbed
systems are now the goal of an increasing number of scientists. With
the introduction of benthic chambers and in situ micro-electrode profilers
that allow for the direct measurement of chemical fluxes between sediment
and water at the sea floor and for porewater composition, knowledge
of sediment biogeochemistry and exchange fluxes was dramatically changed.
Since then, there have been significant breakthroughs in the scientific
understanding of benthic biogeochemistry due to the rapid progress in
the technology of in situ sensors and benthic chambers (such as the
introduction of gel probes, voltammetric electrodes or one- and two-dimensional
optodes). This paper is a synthesis of discussions that occurred during
the workshop on sediment biogeochemistry at the Benthic Dynamics:
In Situ Surveillance of the Sediment-Water Interface international
conference (Aberdeen, UK--March 25-29, 2002). This review summarizes
existing in situ technologies for the study of benthic biogeochemistry
dynamics and related scientific applications. Issues that are examined
here include the limitations and possible improvement (e.g., technology
coupling) of these technologies and future development of new sensors.
The authors also discuss potentially important scientific and technical
issues using in situ benthic biogeochemical assessment that lend themselves
to further investigation. Some of these issues include greater insight
into the mechanisms and on organic matter (OM) mineralization, better
models for the understanding of benthic fluxes to reconcile microelectrode
and larger-scale chamber measurements, insight into the impacts of redox
changes on trace metal behavior, new insights into geochemical reaction
pathways in surface sediments, and a better understanding of contaminant
fate in nearshore sediments.
Source: Viollier, E. et al.; Benthic biogeochemistry: state of the
art technologies and guidelines for the future of in situ survey;
Journal of Experimental Marine Biology and Ecology 285-286: 5-31, 2003.
- Bioaccumulation and toxicity of fluoranthene in the estuarine oligochaete
Monopylephorus rubroniveus – The impact of UV on the
tolerance of the estuarine oligochaete Monopylephorus rubroniveus
exposed to fluoranthene was characterized. Using waterborne exposures,
the 72-h median lethal concentration (LC50) and median lethal dose (LD50)
were 0.7 (95% CI, 0.4-0.8) µg/L and 8.0 (5.6-9.6) µg/g worm
dry weight, respectively, in the presence of UV radiation [UV-A=64.7+/-1.0
µW/cm2 (mean+/-standard deviation)]. In the absence of UV radiation,
even at the water solubility limits of fluoranthene, little mortality
was detected. Mean bioconcentration factors present in treatments was
10,893+/-2828. Using sediment exposures, little mortality was seen following
10 days at concentrations as high as 3912 µg fluoranthene/g sediment
dry weight in both the presence of UV radiation (UV-A=108.4+/-1.3;µW/cm2)
and its absence. Bioaccumulation of sediment-associated fluoranthene
was relatively high, varying little among the five sediment treatments.
The results of this study reveal that M. rubroniveus is (1) sensitive
to waterborne fluoranthene in the presence of UV radiation, and (2)
highly tolerant of fluoranthene in the presence of sediment, despite
the ability to bioaccumulate fluoranthene to comparatively high levels.
The results show that those environmental factors that could potentially
increase their exposure to UV radiation should be taken into account
when assessing the general risk of fluoranthene to M. rubroniveus.
Source: Weinstein, J.E. et al.; Bioaccumulation and toxicity of fluoranthene
in the estuarine oligochaete Monopylephorus rubroniveus; Ecotoxicology
and Environmental Safety, In Press, 2003.
to top of page
Other Journal Titles of Interest
- A comparison of two methods for estimating the status
of benthic habitat quality in the Virginia Chesapeake Bay. Diaz,
Robert J.; G. Randy Cutter, Jr., and Daniel M. Dauer. Journal of
Experimental Marine Biology and Ecology 285-286: 371-381, 2003.
- Benthic biotopes remote sensing using acoustics.
Freitas, Rosa, Ana Maria Rodrigues, and Victor Quintino. Journal
of Experimental Marine Biology and Ecology, 285-286: 339-353, 2003.
- Assessment of adsorption behavior of dibutyltin (DBT)
to clay-rich sediments in comparison to the highly toxic tributyltin
(TBT). Hoch, Marion, Jacinto Alonso-Azcarate, and Martin Lischick.
Environmental Pollution, In Press.
- Removal of pyrene from contaminated sediments by mangrove
microcosms. Ke, L., W.Q. Wang, Teresa W.Y. Wong, Y. S. Wong, and
Nora F.Y. Tam. Chemosphere, In Press.
- Biogeochemistry of the sediment-water interface in the littoral
of an acidic mining lake studied with microsensors and gel-probes.
Koschorreck, Matthias, Iris Brookland, and Antje Matthias. Journal
of Experimental Marine Biology and Ecology, 285-286: 71-84, 2003.
- Selenium speciation analysis in a sediment using strong anion
exchange and reversed phase chromatography coupled with inductively
coupled plasma-mass spectrometry. Ochsenkuhn-Petropoulou, M., B.
Kavouras Michalke, and P. Schramel. Analytica Chimica Acta 478 (2):
219-227, 2003.
- Assessing sediment toxicity and arsenite concentration with bacterial
and traditional methods. Petanen, T., M. Lyytikainen, J. Lappalainen,
M. Romantschuk, and J.V.K. Kukkonen. Environmental Pollution 122
(3): 407-415, 2003.
- A rapid procedure for the determination of thorium, uranium, cadmium
and molybdenum in small sediment samples by inductively coupled plasma-mass
spectrometry: application in Chesapeake Bay. Zheng, Y., B. Weinman,
T. Cronin, M.Q. Fleisher, R.F. Anderson. Applied Geochemistry 18
(4): 539-549, 2003.
to top of page
Upcoming Events and Conferences
- 13th Annual West Coast Conference on Contaminated
Soils, Sediments & Water, San Diego, California. The conference
runs from March 17-20. For more information, contact Brenna Bartell
at 413-549-5170; e-mail brenna@aehs.com; or visit the website www.aehs.com/conferences/westcoast.
- Environmental Stability of Chemicals in Sediments
Workshop. This workshop occurs April 8-10 in San Diego, CA.
For more information, contact Susan Vasich at 313-465-7978 or smv@honigman.com; or look at
the website: http://www.smwg.org/.
- Coastal Sediments 2003. This conference
occurs May 18-23 in Clearwater Beach, FL. Coastal Sediments '03 is a
multi-disciplinary international conference convened for researchers
and practitioners to discuss science and engineering issues of coastal
sediment processes. Visit the website for more information: http://www.coastalsediments.net/.
- 2nd International Symposium on Contaminated Sediments.
This conference is May 26-28 in Quebec City, Canada. Conference is subtitled
Characterization, Evaluation, Mitigation/Restoration, Management
Strategy, and Performance. For more information, contact Helene
Tremblay at 418-656-2193; e-mail: SCS2003@ggl.ulaval.ca or
visit the conference website.
- In-Situ Contaminated Sediment Capping Workshop.
This workshop is from May 12-14 in Cincinnati, OH. A national workshop
to review the science, technology and applications of capping at contaminated
sediment sites, examine lessons learned, and discuss future directions.
For further information, contact Ana Montes, Electrical Power Research
Institute (EPRI) at 650-855-2165. Web site: www.epri.com/default.asp
and click on Events Calendar.
-
North American Benthological Society's Annual Meeting. This
meeting runs from May 27-31 in Athens, GA. Sessions at the conference
will present case studies dealing with ecotoxicology and bioassessment.
For more information, contact Anne Yount, College of Agriculture and
Environmental Sciences, 204 Lumpkin House, University of Georgia,
Athens, GA 30624. Website: www.benthos.org/Meeting/nabs2003/programschedule.htm.
- In Situ and On-Site Bioremeditation.
This conference happens in Orlando, FL, June 2-5. For more information,
contact the Conference Group at 800-783-6338 or 614-424-5461; e-mail:
info@confgroupinc.com; or
see the website: http://www.battelle.org/biosymp.
- International Association for Great Lakes Research
Global Threats to Large Lakes: Managing in an Environment of Instability
and Unpredictability. The conference occurs June 22-26 in Chicago,
IL. For more information, contact Marc Tuchman at the EPA’s Great
Lakes National Program Office at 312-353-1369 or email at tuchman.marc@epa.gov.
- Second International Conference on the Remediation
of Contaminated Sediments - The Second International Sediment
Remediation Conference will be held in September 30th through October
3rd in Venice, Italy. Organizers say the city is an ideal setting for
a conference on this topic because of the sediments remediation efforts
being exerted there by the local, regional, and national governments.
For more information, contact the Conference Group at 800-783-6338 (U.S.
and Canada) or 614-488-2030; e-mail: info@confgroupinc.com;
or visit the Sediment
Remediation Conference website.
- Contaminated Soils, Sediments, and Water. The conference is
from October 20-23 in Amherst, MA. For more information, contact Denise
Leonard at 413-545-1239 or info@UMassSoils.com.
Web site: www.umasssoils.com.
- SETAC 24th Annual Meeting: Science Without Borders: Developing
Solutions for Global Environmental Challenges. This meeting takes
place November 8-13 in Austin, TX. This conference supports efforts
scientists and engineers to work together to develop solutions to global
problems. Topics including the factors influencing bioavailability and
sediment chemistry will be addressed. For more information, contact
SETAC North America, 1010 North 12th Avenue, Pensacola, FL 32501. Phone:
850-469-1500; web site: http://setac.org/austin.html.
to top of page
Websites of Interest
Sediment Remediation Projects in Great Lakes Areas of Concern This
web site provides summaries of several Great Lakes contaminated sediment
remediation projects. Summary information includes proposed schedule,
amount of sediment removed, and accomplishments to date. http://www.epa.gov/glnpo/aoc/sedimentprojects.html
Waste To Resource: Beneficial Use of Great Lakes Dredged Material
This 16-page full-color booklet answers common questions about Great
Lakes dredged material and its use for productive purposes. It includes
case studies and a map of different types of beneficial use projects
around the Great Lakes. http://www.glc.org/dredging/publications/benuse.pdf
Beneficial Use of Great Lakes Dredged Material: A Report
of the Great Lakes Beneficial Use Task Force This 60-page report
includes 18 recommendations for advancing beneficial use of dredged
material that resulted from the task force's 2-year collaborative effort.
The report also includes an overview of selected beneficial use projects,
selected dredged material treatment technologies, and a profile of each
Great Lakes state's regulatory framework for beneficial use of dredged
material.www.glc.org/benuse/Finalreport.pdf
Great Lakes Dredging Team The Great Lakes Dredging Team is a
partnership of federal and state agencies created to assure that the
dredging of U.S. harbors and channels throughout the Great Lakes, Connecting
Channels, and tributaries is conducted in a timely and cost effective
manner while meting environmental protection, restoration, and enhancement
goals. This web site provides a variety of information on contaminated
sediments, dredging, beneficial uses, new technology, and case studies.
http://www.glc.org/dredging/sediment/sediment.html
to top of page
|
