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EnviroSolution Ltd
Environmental consultancy service

Phase 1 Desktop Study

A Phase 1 Desktop Study identifies potential contamination, environmental constraints and development risks before planning, acquisition or construction decisions are made.

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Scope and evidence

Built around planning, development and compliance decisions.

Use this page to understand when the service is usually needed, what evidence is reviewed and what information helps us quote accurately.

  • Planning and regulator context
  • Clear deliverables and next steps
  • Linked services considered early

A useful Phase 1 is more than a database search. It should build a defensible picture of the site history, ground setting and credible pollutant linkages, then explain what that means for the proposed development.

01

When this service is used

This is commonly used for planning applications, planning condition discharge, due diligence, land purchase and early development risk screening.

Planning and project supportCommonly used for planning validation, contaminated-land conditions, acquisition due diligence and early development risk review.
Risk and programme controlA proportionate desk study can identify where intrusive work is justified and, equally importantly, where further investigation is not supported by the evidence.
02

What the report normally includes

  • Site setting and environmental database review
  • Historical mapping and previous land-use review
  • Conceptual site model and pollutant linkage assessment
  • Planning and regulatory context review
  • Clear recommendations for Phase 2 or further assessment where required
03

What we need from you

Providing the right information at the start helps us confirm the scope, quote accurately and avoid back-and-forth once the work is underway.

  • Site address and postcode
  • Planning reference if available
  • Red-line boundary plan
  • Proposed development layout
  • Any previous reports or planning condition wording
04

What a robust Phase 1 should cover

Consultant reviewing mapping and site information for a Phase 1 Desktop Study.
Site investigation supporting informed planning and redevelopment decisions.
What a robust scope should cover
  • Historical mapping and previous land uses on and around the site
  • Geology, hydrogeology, hydrology and sensitive environmental receptors
  • Environmental database records and relevant regulatory information
  • Site reconnaissance or walkover evidence where included in the scope
  • Source-pathway-receptor review and a preliminary Conceptual Site Model
  • Clear recommendations for Phase 2 investigation or other follow-up work where justified
What the work should leave you with
  • A clear preliminary risk assessment rather than a list of database records
  • Potential contamination sources linked to credible pathways and receptors
  • A documented basis for planning, due diligence and investigation decisions
  • Proportionate next steps that can be scoped efficiently
Why the detail mattersThe strongest Phase 1 reports explain why a potential issue matters to this particular site and proposed use. That makes the report easier for planners, lenders and project teams to act on.See an EnviroSolution due-diligence project →
05

Useful to know before you enquire

The proposed use changes the risk pictureA residential development, school, commercial unit and warehouse do not present the same receptor profile, so the development proposal matters.
A Phase 1 does not prove contaminationIt identifies credible potential risks from available evidence. Site-specific sampling is normally a Phase 2 task where further evidence is needed.
Planning wording should be suppliedIf the local authority has issued a contaminated-land condition or validation request, upload the exact wording so the scope can be aligned to it.
Historic mapping is only part of the evidenceLand-use history should be considered alongside geology, water environment, surrounding sources, site observations and the development itself.
FAQ

Common questions

Does a Phase 1 Desktop Study include sampling?

Normally no. A Phase 1 is principally a desk-based preliminary risk assessment, often supported by a site walkover. Intrusive sampling and laboratory testing are normally undertaken at Phase 2 where justified.

Will a Phase 1 automatically lead to a Phase 2?

No. The purpose is to identify credible pollutant linkages and recommend proportionate next steps. Some sites require intrusive investigation; others may not.

Can you use a Phase 1 to discharge a planning condition?

Often, but it depends on the exact condition wording and the findings. If the Phase 1 identifies unresolved risks, the authority may require Phase 2 investigation or further work before final discharge.

Next

Related services

These services are often reviewed alongside Phase 1 Desktop Study depending on the site, planning context and proposed development.

Coal Mining Risk AssessmentAsbestosWaste ClassificationInfiltration Testing
Structured enquiry

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Our custom enquiry builder asks service-specific questions so we can confirm the correct scope, identify linked services and avoid unnecessary delays.

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