In deep-sea mining, some of the most important environmental decisions will be made before the Environmental Impact Statement is written. The scoping report determines which risks, uncertainties, alternatives and knowledge gaps the environmental impact assessment will examine—and potentially which issues it may overlook.
This is particularly relevant in 2026. The ISA Council’s latest draft exploitation regulations retain scoping as a distinct stage in an iterative environmental impact assessment process. The draft also addresses baseline data, stakeholder consultation, knowledge gaps and uncertainty (ISA draft exploitation regulations, July 2026).
Scoping sets the direction
An Environmental Impact Statement presents the results of an assessment. The scoping report establishes what must be assessed in the first place.
For a proposed deep-sea mining operation, scoping should identify the activities and environmental interactions requiring detailed investigation. This may include seabed disturbance, sediment plumes, underwater noise, discharges, artificial light, vessel activity, waste, cumulative effects and impacts on the water column and wider ecosystem.
The process should distinguish between:
- What is supported by sufficient evidence
- What is assumed on the basis of models or comparable activities
- What remains unknown
- Which uncertainties could materially affect the conclusions
- What additional baseline data and studies are required
This distinction is important in deep-sea environments where ecological knowledge remains incomplete and some impacts may be difficult or impossible to reverse.
Making precaution operational
The precautionary approach is embedded in the ISA’s developing environmental framework. Its practical meaning is that lack of full scientific certainty should not be used to postpone measures intended to prevent serious environmental harm (International Seabed Authority).
Precaution should therefore influence the design of the assessment. Significant uncertainty may require additional baseline studies, alternative methods, stricter operating limits or changes to the proposed mining system. It may also support a decision that an activity is not ready to proceed.
The scoping report provides an early decision gate for determining whether the proposed assessment programme is capable of producing the information required for responsible decision-making. If important receptors, pathways or cumulative effects are excluded at this stage, they may remain inadequately addressed throughout the subsequent EIA.
Precaution is therefore not simply a principle to be quoted in the EIS. It must influence what is studied, how uncertainty is evaluated and how decisions are made.
Connecting scoping with ISO 14001
ISO 14001:2026 provides a structured framework for identifying environmental aspects, managing risks and improving environmental performance. The new edition gives greater emphasis to climate change, biodiversity, leadership, resilience and environmental priorities across operations and value chains (ISO 14001:2026).
ISO 14001 does not replace the ISA’s regulatory requirements or the EIA process. It can, however, provide the management structure needed to implement the findings from environmental scoping.
For DSM contractors and specialist service providers, this includes:
- Assigning responsibilities for environmental studies
- Establishing requirements for data quality and traceability
- Managing scientific contractors and technical interfaces
- Controlling assumptions, models and documented information
- Recording environmental risks and required safeguards
- Applying management of change when new information emerges
- Tracking actions from scoping through the EIS and Environmental Management and Monitoring Plan
Other standards in the ISO 14000 family can support environmental auditing, life-cycle assessment, environmental communication and greenhouse-gas management.
Building a defensible assessment process
A strong scoping report creates a traceable connection between the proposed activity, the environmental setting, identified uncertainty and the work required to complete the EIA. It gives regulators, sponsoring States, contractors and stakeholders an opportunity to examine the direction of the assessment before major conclusions have been formed.
For emerging activities such as deep-sea mining, that early examination is essential. The quality of an EIS depends substantially on the questions established at the beginning.
Bruncell Larsen Strategic Advisory supports DSM contractors and specialist service providers in developing environmental management systems, environmental risk processes and structured documentation for scoping, EIA and ISA-related work. Please contact me if you would like to discuss these issues further.
