Approaches for Derivation of Environmental Quality Criteria for Substances Applied in Risk Assessment of Discharges from Offshore Drilling Operations

Altin, Dag; Frost, Tone Karin; Nilssen, Ingunn

doi:10.1897/ieam_2007-045

Cited by 8 publications

(16 citation statements)

References 7 publications

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“…They found these EQS values to be 8-33 times lower than the current Norwegian EQS values which have been derived in the 21/30 standard way from toxicity test on individual chemicals. On the other hand the heavy metal EQS values corresponded well with those developed through equilibrium partitioning by Altin et al (2008) for the same sediment ecosystems, and which also to some extent encompassed combined effects. An individual chemical approach may therefore result in EQS values that are strongly under-protective.…”

Section: Environmental Regulation Approach On Mixture Effectssupporting

confidence: 64%

Environmental risk assessment of combined effects in aquatic ecotoxicology: A discussion paper

Beyer

Petersen

Shang

et al. 2014

Marine Environmental Research

171

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Environmental regulatory edicts within the EU, such as the regulatory framework for chemicals REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals), the Water Framework Directive (WFD), and the Marine Strategy Framework Directive (MSFD) focus mainly on toxicity assessment of individual chemicals although the effect of contaminant mixtures is a matter of increasing concern. This discussion paper provides an overview of the field of combined effects in aquatic ecotoxicology and addresses some of the major challenges related to assessment of combined effects in connection with environmental risk assessment (ERA) and regulation. Potentials and obstacles related to different experimental, modelling and predictive ERA approaches are described. On-going ERA guideline and manual developments in Europe aiming to incorporate combined effects of contaminants, the use of different experimental approaches for providing combined effect data, the involvement of biomarkers to characterize Mode of Action and toxicity pathways and efforts to identify relevant risk scenarios related to combined effects are discussed.

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Section: Environmental Regulation Approach On Mixture Effectssupporting

confidence: 64%

Environmental risk assessment of combined effects in aquatic ecotoxicology: A discussion paper

Beyer

Petersen

Shang

et al. 2014

Marine Environmental Research

171

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“…The log K d values derived in this paper were used by Altin et al (2008) and Rye et al (2008) with data on concentrations of barite in the drilling mud/cuttings plume and in bottom sediments to calculate PEC seawater and PEC sediment for the metals in drilling mud barite. These PEC values were then used in an environmental risk assessment for drilling discharges.…”

Section: Discussionmentioning

confidence: 99%

“…The objective of this paper is to describe an approach for predicting the PEC of metals from drilling mud barite in the water column and sediments. These PECs are used to estimate the contribution of metals to the toxicity of drilling wastes in the water column and sediments (Altin et al 2008), and to model the EIF for drilling discharges in the water column and sediments around offshore platforms (Rye et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Estimation of bioavailability of metals from drilling mud barite

Neff¹

2008

Integr Envir Assess & Manag

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Drilling mud and associated drill cuttings are the largest volume wastes associated with drilling of oil and gas wells and often are discharged to the ocean from offshore drilling platforms. Barite (BaSO4) often is added as a weighting agent to drilling muds to counteract pressure in the geologic formations being drilled, preventing a blowout. Some commercial drilling mud barites contain elevated (compared to marine sediments) concentrations of several metals. The metals, if bioavailable, may harm the local marine ecosystem. The bioavailable fraction of metals is the fraction that dissolves from the nearly insoluble, solid barite into seawater or sediment porewater. Barite-seawater and barite-porewater distribution coefficients (Kd) were calculated for determining the predicted environmental concentration (PEC; the bioavailable fraction) of metals from drilling mud barite in the water column and sediments, respectively. Values for Kdbarite-seawater and Kdbarite-porewater were calculated for barium, cadmium, chromium, copper, mercury, lead, and zinc in different grades of barite. Log Kdbarite-seawater values were higher (solubility was lower) for metals in the produced water plume than log Kdbarite-porewater values for metals in sediments. The most soluble metals were cadmium and zinc and the least soluble were mercury and copper. Log Kd values can be used with data on concentrations of metals in barite and of barite in the drilling mud-cuttings plume and in bottom sediments to calculate PECseawater and PECsediment.

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“…The effects of alkyl phenol cannot be excluded. Phenol and AF are dangerous and toxic, cause a number of adverse biological effects [5]. In 2012, the total amount of phenol and C1-C9 AF on the SCS was 206 and 316 tons, respectively.…”

Section: Resultsmentioning

confidence: 99%

Ecological Consequences of Reservoir Water and Drill Cuttings Discharging in the Sea Continental Shelf

Igtisamova¹,

Yangirova²,

Nosirov³

2020

Proceedings of the International Session on Factors of Regional Extensive Development (FRED 2019)

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The article studies the impact of drilling waste and industrial water on the fauna of the aquatic environment. The analysis of the impact of emissions on the continental shelf is presented. The study revealed that in the ecological system of the marine continental shelf, the source of pollution is drilling waste and industrial water. The latest studies of the impact of drill cuttings and industrial water on the fauna of the continental shelf were analyzed, their specific impact on inhabitants of the aquatic fauna were examined, the role of alkyl phenols and polyaromatic hydrocarbons was studied. This article also analyzes detrimental effects of formation water on the fauna of the marine world. Alkylphenols (AF) and polyaromatic hydrocarbons (PAHs), which are part of industrial water, accumulate and settle in the mitochondria of cells of living organisms. They are rapidly metabolized in the body. It was also revealed that alkyl phenols, naphthenic acids and polyaromatic hydrocarbons can disrupt reproductive functions and affect chemical, biochemical and genetic biomarkers. Water-based drill cuttings can affect the biomarkers in the filter which is manifested in the increased oxygen consumption by living organisms, which destriys the marine fauna.

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Approaches for Derivation of Environmental Quality Criteria for Substances Applied in Risk Assessment of Discharges from Offshore Drilling Operations

Cited by 8 publications

References 7 publications

Environmental risk assessment of combined effects in aquatic ecotoxicology: A discussion paper

Environmental risk assessment of combined effects in aquatic ecotoxicology: A discussion paper

Estimation of bioavailability of metals from drilling mud barite

Ecological Consequences of Reservoir Water and Drill Cuttings Discharging in the Sea Continental Shelf

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