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Soilutions

Specialists in the remediation of contaminated soils and groundwaters

You are here: Home / Guides / Site Investigation – Guide & FAQs / What is a Phase 1 Desk Study Report?

What is a Phase 1 Desk Study Report?

Part of our Site Investigation - Guide & FAQs. Click to see more answers to your questions.

What is a Phase 1 Desk Study Report?

A Phase 1 report is predominantly a desk-based exercise in gathering as much information about the site and then making some initial judgement based assessment of potential risks based upon that information.  As such, the are commonly referred to as a Phase 1 Desk Study or Phase 1 Preliminary Risk Assessment.

Information may be gathered from diverse sources, such as historical maps, records held by the Environment Agency or SEPA, geological and coal mining maps, aerial photography or site records.

The desk-based information gathering is often supplemented with a visit to the site and walk-over by a geoenvironmental engineer to look for present signs of contamination or past contaminative processes.  Evidence may include for example storage of chemicals, under or over-ground fuel tanks, staining, asbestos containing materials, vegetation die-back or substations.

The information collated for a site is assessed to determine potential contaminants or contaminant sources, potential receptors (such as humans, the environment or buildings) and potential routes the contamination sources could reach a receptor – a pathway.  Where a source is determined to reach an identified receptor via a pathway, a “pollutant linkage” is said to potentially exist.  The compilation of pollutant linkages is presented as a conceptual site model (CSM), which may be tabulated or a pictorial cross-section.

You may have noticed the word “potential” used a lot in the previous sentences – the purpose of a Phase 1 is to identify what may be present at the site.  Guidance and professional judgement qualitatively assesses the potential significance of identified risks.  Where one or more potentially significant risks are identified – further work is required, typically a Phase 2.

Free eBook: 'Phase 1 Desk Studies / Preliminary Risk Assessments Explained'

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Phase 1 Desk Studies / PRA Explained
Phase 2 Site Investigations Explained
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Guide to Soil Remediation
Guide to Oil Spill Response
Guide to Giant Hogweed Removal
Guide to Japanese Knotweed Removal
Guide to Rhododendron Removal
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