scholarly journals Uncertainties in Sediment Quality Weight-of-Evidence (WOE) Assessments

2002 ◽  
Vol 8 (7) ◽  
pp. 1517-1547 ◽  
Author(s):  
Graeme E. Batley ◽  
G. Allen Burton ◽  
Peter M. Chapman ◽  
Valery E. Forbes
Keyword(s):  
Sediment Quality ◽  
Weight Of Evidence ◽  
Quality Weight

A new tool for assessing sediment quality based on the Weight of Evidence approach and grey TOPSIS

2015 ◽  
Vol 537 ◽  
pp. 369-376 ◽  
Author(s):  
Yu-Xia Jiang ◽  
You-Sheng Liu ◽  
Guang-Guo Ying ◽  
Hong-Wei Wang ◽  
Yan-Qiu Liang ◽  
...  
Keyword(s):  
Sediment Quality ◽  
Weight Of Evidence

scholarly journals Potential effects and impacts of a coal spill on sensitive aquatic habitat: a weight-of-evidence sediment quality assessment

2020 ◽  
Vol 55 (3) ◽  
pp. 295-309
Author(s):  
J. Trowell ◽  
G. Gilron ◽  
K. Graf ◽  
L. Patterson ◽  
C. Chan ◽  
...  
Keyword(s):  
Sediment Toxicity ◽  
Sediment Quality ◽  
Weight Of Evidence ◽  
Sediment Chemistry ◽  
Lake Ecosystem ◽  
Metallurgical Coal ◽  
Coal Deposits ◽  
Residual Coal ◽  
The Right ◽  
Recovery Program

Abstract On 11 January 2014, a Canadian Pacific Railway train derailed on the Canadian National Railway Company's Yale Subdivision, Mile 122.7, in Burnaby, British Columbia, Canada. This derailment resulted in the partial release of metallurgical coal from three rail cars into, and adjacent to, Silver Creek. Following the derailment and subsequent spill, a comprehensive coal recovery program was implemented. As part of the program, coal deposits were removed from the Silver Creek mainstem in the right-of-way during the stabilization work. A total of approximately 143 tonnes of mixed coal, organic and mineral fines were removed during this program. Subsequently, using a weight-of-evidence sediment quality triad approach, a two-year Aquatic Impact Assessment was conducted to evaluate whether the remaining residual coal in Silver Creek and Burnaby Lake presented the potential for impact to the aquatic environment. Lines-of-evidence (LOEs) were evaluated, including sediment chemistry, sediment toxicity, bioaccumulation potential and coal content. The majority of the data from exposed sampling locations indicated that there was low potential for impact, based on the assessed LOEs. Hence, given the overall low potential for residual impacts from the coal deposits in the Silver Creek–Burnaby Lake ecosystem, no further clean up or monitoring was recommended.

scholarly journals Integrative assessment of sediment quality in acidification scenarios associated with carbon capture and storage operations

2019 ◽  
Vol 27 (3) ◽  
pp. 333-345
Author(s):  
Ángel DelValls ◽  
Lorena da Silva Souza ◽  
Alessandra Aloise de Seabra ◽  
Camilo Dias Seabra Pereira ◽  
Estefanía Bonnail ◽  
...  
Keyword(s):  
Adverse Effects ◽  
Organic Contaminants ◽  
Carbon Capture ◽  
Atmospheric Carbon Dioxide ◽  
Illicit Drugs ◽  
Sediment Quality ◽  
Carbon Capture And Storage ◽  
Weight Of Evidence ◽  
Inorganic Substances ◽  
And Storage

Efforts to stem global change include the application of new technological developments that aim to reduce atmospheric carbon dioxide (CO2) through the carbon capture and storage (CCS) of this greenhouse gas in stable geological structures. In this paper, we assess the potential risks related to the application of CCS technology and the acidification of aquatic ecosystems through CO2 enrichment. We use the multiple lines of evidence approach (LOEs) to characterize the effects of the acidification with contamination in aquatic sediments. We highlight and discuss the effects of acidification on the LOEs including contamination and mobility of contaminants in sediments, toxicity, macrobenthic community structure, in situ effects, and bioaccumulation–biomagnification processes. We further assess the results of acidification on the toxicity of organic contaminants such as antibiotics or illicit drugs like the freebase form of cocaine (crack). The main goal of using the LOE approach is to distinguish between adverse effects that are associated with contaminants and those related to acidification by enrichment of CO2 as a result of CCS technology. Previous assessments were not designed or conducted to incorporate an integrative point of view, nor did they employ a weight of evidence approach (WOE) in risk characterization and management of CCS operations and other situations related to acidification by enrichment of CO2 in the aquatic ecosystem. Based on the findings of this review, the WOE can identify the effects of the acidification on the different LOEs used for sediment quality: contaminant mobility, the adverse effects in organism under laboratory and field conditions, and the bioaccumulation–biomagnification of contaminants. The main strength in using the WOE is the ability of this method to discriminate between LOE responses associated with contamination by different organic and inorganic substances from those related to CO2 acidification itself. The WOE will significantly improve the risk assessment in areas affected by potential leakages of CO2 during CCS operations.

scholarly journals A Weight of Evidence (WOE) Approach to Assess Environmental Hazard of Marine Sediments from Adriatic Offshore Platform Area

Water ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1691
Author(s):  
Loredana Manfra ◽  
Chiara Maggi ◽  
Giuseppe d’Errico ◽  
Alice Rotini ◽  
Barbara Catalano ◽  
...  
Keyword(s):  
Reference Values ◽  
Sediment Quality ◽  
Heterogeneous Data ◽  
Control Area ◽  
Gas Production ◽  
Environmental Hazard ◽  
Environmental Data ◽  
Weight Of Evidence ◽  
Worst Case ◽  
Chemical Hazard

European legislative framework supports a multidisciplinary strategy of environmental monitoring because the environment is a complex system of abiotic and biotic interactions, and it should not be studied and protected by looking at one single aspect. The resulting heterogeneous data request to be carefully processed, and the application of Weight of Evidence (WOE) approaches is, thereby, an integrated validated tool. In this perspective, the present study aims to: (i). apply a specific model (Sediqualsoft) based on the WOE approach for processing multidisciplinary data related to four Lines Of Scientific Evidence (LOEs: chemical analyses, ecotoxicological bioassays, bioaccumulation tests and biomarkers) regarding sediments from an area of the Adriatic Sea; (ii). evaluate the usefulness of this specific integrated approach to estimate the potential environmental hazard due to the presence of gas production platforms respect to the traditional approach of sediment chemical characterization. This latter recognized a more contaminated area within 100 m of the platforms in which the Sediqualsoft model showed the presence of a chemical hazard, ranging from moderate to severe, and identified the contaminants (e.g., some metals, benzo(a)pyrene and acenaphthene) most responsible for it. A significant hazard also appeared in some of the sampled stations by analyzing the LOEs dedicated to the biological responses. The choice of different reference values (regulatory limits, threshold values or concentrations measured in the control area) influenced only the chemical hazard but not the overall integration with other LOEs, showing a moderate hazard for the majority of stations. Here, the concentrations measured in a control area are firstly proposed as possible reference values in Sediqualsoft model applications; this could be of particular relevance when Sediment Quality Guidelines are not available for all the measured substances. Moreover, the limitations of a conventional pass-to-fail approach or worst-case scenario were overcoming interpreting whole chemical and ecotoxicological results. All data analyzed and discussed confirm Sediqualsoft as a suitable tool for processing environmental data, including those first processed here on a monitoring scenario of gas platforms that discharge Produced Water into the sea.

Using a classical weight-of-evidence approach for 4-years' monitoring of the impact of an accidental oil spill on sediment quality

2008 ◽  
Vol 34 (4) ◽  
pp. 514-523 ◽  
Author(s):  
Carmen Morales-Caselles ◽  
Inmaculada Riba ◽  
Carmen Sarasquete ◽  
T. Ángel DelValls
Keyword(s):  
Oil Spill ◽  
Sediment Quality ◽  
Weight Of Evidence ◽  
The Impact

Comparative analysis of two weight-of-evidence methodologies for integrated sediment quality assessment

Chemosphere ◽  
2015 ◽  
Vol 120 ◽  
pp. 138-144 ◽  
Author(s):  
A. Khosrovyan ◽  
A. Rodríguez-Romero ◽  
M. Antequera Ramos ◽  
T.A. DelValls ◽  
I. Riba
Keyword(s):  
Comparative Analysis ◽  
Quality Assessment ◽  
Sediment Quality ◽  
Weight Of Evidence ◽  
Sediment Quality Assessment
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