Alternatives and scoping inside an environmental statement

The alternatives chapter of an environmental statement is misunderstood in a specific way: the Town and Country Planning (Environmental Impact Assessment) Regulations 2017 do not oblige a developer to study alternatives. Schedule 4 requires a description of the reasonable alternatives that the developer actually studied, with the main reasons for selecting the chosen option and a comparison of the environmental effects. Study nothing and you describe nothing, which is lawful and usually unwise.

Scoping sits upstream of that chapter and determines everything else in the statement. Both are distinct from screening, which asks only whether an assessment is needed at all.

What the regulations require on alternatives

Schedule 4 to the 2017 Regulations lists the information for inclusion in an environmental statement. The alternatives paragraph asks for a description of the reasonable alternatives studied by the developer, giving design, technology, location, size and scale as examples, together with an indication of the main reasons for the choice made, including a comparison of environmental effects.

The wording changed from the earlier regulations, which referred to the main alternatives studied by the applicant. The current formulation ties the obligation to what the developer has in fact considered. That has two consequences in practice.

The first is evidential. If the project team ran four masterplan options through a constraints analysis, those are reasonable alternatives studied, and they belong in the chapter whether or not they flatter the application. Selective reporting is the vulnerability a well-advised objector looks for.

The second is strategic. A project where genuine optioneering happened, and is reported, carries more weight in the planning balance than one where the applicant asserts the scheme is the only workable option. An Environmental Impact Assessment is statutorily required to be prepared by competent experts, and the statement has to be accompanied by an outline of their expertise, so an unsupported assertion in this chapter is attributable to a named discipline.

Reasonable alternatives and the no development case

The no development case is not an alternative under the alternatives paragraph. It appears elsewhere in Schedule 4, as part of the baseline description, which requires an outline of the likely evolution of the current state of the environment without implementation of the development, so far as natural changes from the baseline can be assessed with reasonable effort.

That distinction matters because the two are often conflated into a single section headed "do nothing", which satisfies neither requirement properly.

What the baseline evolution section should do is describe how the site and its receptors would change anyway: a quarry continuing to be worked under an existing permission, farmland reverting under a changed subsidy regime, a watercourse responding to climate change allowances, a woodland maturing, a contaminated site remaining a source of risk. Where the honest answer is that very little would change, say so in a paragraph and move on.

Site selection against design alternatives

Alternatives divide into two kinds, and they belong to different stages of the project.

Site selection alternatives are about where. They are credible where the developer had a choice of sites, which is common for infrastructure, energy and waste projects and much less common for a landowner promoting their own site. Where there was no choice of site, say that plainly and explain why, rather than constructing a retrospective site search that nobody believes.

Design alternatives are about how, and they are available on every project. Layout, massing, access position, phasing, drainage approach, building height, the location of a stack or a plant compound, the treatment of a boundary. These are the alternatives that most often change the environmental outcome, and they are the ones a reasonable reader expects to see.

Report each option with the same structure: what it was, why it was considered, the environmental effects that differed, and why it was not taken forward. Keep the comparison to effects, not to commercial preference. A sentence explaining that an option was discounted because it reduced developable area by 15 per cent is a commercial reason dressed as an environmental one, and an inspector will read it that way.

Where one of the discounted options performed better on a given topic, acknowledge it. The chapter is more credible for conceding that a lower-density layout would have reduced landscape effects, and then explaining the planning reasons for the chosen option.

Requesting a scoping opinion and what it binds

A person minded to make an EIA application may ask the relevant planning authority for a written opinion on the scope and level of detail of the information to be provided. The authority must consult the consultation bodies and respond within five weeks of receiving the request, or within a longer period agreed in writing.

The effect of a scoping opinion is more than advisory. Where a scoping opinion has been issued, the environmental statement must be based on the most recent opinion. That cuts both ways: it protects a developer who has followed the opinion, and it exposes one who has quietly dropped a topic the authority asked for.

A scoping request that works contains the project description, the site and its context, the receptors identified, the proposed topic list with the method for each, the topics proposed to be scoped out with reasons, the study areas, and the proposed approach to cumulative effects. The thinner the request, the broader and more defensive the opinion that comes back, because an authority asked an open question will answer it expansively.

Allow for the five weeks plus internal consultation time in the programme, and treat the opinion as a document you will be held to for the next eighteen months.

Topics scoped out and the justification needed

Scoping out is where proportionality is won or lost, and the regulations support a focused statement rather than an encyclopaedic one.

The justification for scoping a topic out has to be specific to the project and the receptors. Three forms of justification carry weight:

1. No pathway. There is no mechanism by which the development could affect the receptor, for example no hydrological connection to a designated site.
2. No receptor. There is no sensitive receptor within any credible zone of influence.
3. No material change. The effect exists but is demonstrably not likely to be significant, with the reasoning stated and the evidence referenced.

What does not carry weight is scoping out a topic because it will be controlled by another regime, because the effects will be mitigated by conditions, or because a separate standalone report will cover it. Those are reasons to assess the topic proportionately, not reasons to exclude it.

Cumulative effects are the topic most often scoped too narrowly, and the approach to cumulative effects in an environmental statement needs settling at scoping rather than at submission, because the list of committed developments has to be agreed with the authority.

Consultee input at the scoping stage

The authority consults the statutory bodies before adopting its opinion, and their responses are usually appended to it. Read them in the original rather than through the authority's summary, because a consultee's specific methodological request often gets compressed into a general sentence.

The responses that most change the work are from the Environment Agency on water and flood risk, Natural England on designated sites and protected species, Historic England on heritage assets, the lead local flood authority on surface water, the highway authority on transport methodology, and the county archaeologist on evaluation requirements. Where a consultee asks for a specific method, either adopt it or record in the statement why an alternative method is appropriate.

Engage the ecologist early at this stage, because survey seasons do not wait for scoping. Where a scoping opinion asks for a survey that can only be done between May and August, the programme consequence is immediate, and the mitigation hierarchy in an ecological appraisal has to be built into the design rather than appended to it afterwards.

Where the chapter is found inadequate

Two things happen when a chapter falls short. The authority requests further information under the regulations, which delays determination and can require re-publicity. Or the inadequacy becomes a ground of challenge after permission, where the question is not whether the statement was perfect but whether it contained the information reasonably required for the decision.

The alternatives chapter attracts challenge in three recurring ways: where options studied internally were not reported, where the comparison of effects is asserted rather than evidenced, and where the no development scenario is missing or reduced to a single sentence.

Fix those at draft stage with a simple audit. List every option the project team modelled, from any discipline, with the date and the author. Check each appears in the chapter or has a recorded reason for exclusion. Then check the baseline evolution section exists, is referenced from the relevant effects chapters, and says something specific about the site.

Where the statement is drafted in-house, send the alternatives and scoping chapters for independent review before submission. The professional directory is the route for a review and sign-off, and the full list of report types shows which technical chapters a project of this kind usually needs.

For specialist technical reports, qualified professional input may be required. The Environmental Impact Assessment Regulations 2017 require an environmental statement to be prepared by competent experts. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.