What exactly is a Phase 1 Desk Study?

A Phase 1 Desk Study can be a preliminary risk assessment in the collation and review of published info relating to a sites historical, geological and environmental setting. Get more details about visit this page



The purpose of a Desk Study is to establish a preliminary risk rating and to strategy the subsequent stages in the site investigation. This really is accomplished by identifying any potential ground associated hazards and prospective contamination sources, pathways and receptors exactly where there may be prospective risks to human health, vegetation, controlled waters, structures and services.



High High-quality, Comprehensive Phase 1 Desk Study Reports by Experienced Engineers!



Please note, Each Phase 1 Desk Study Ought to include a Walkover Survey. This can be a requirement by the Local Authorities! Obtaining a report with out a Walkover survey are most likely to be rejected or an extra Planning Situation will likely be added. Moreover, the danger of unforeseen site investigation charges and liabilities considerably increases.



Do I want a Phase 1 Desk Study?

You will discover generally two scenarios for requiring a Phase 1 Desk Study:



Establishing a Site - a Phase 1 Desk Study (Preliminary Danger Assessment) will commonly be a requirement within the Planning Circumstances set out by the Local Authority Planning Department. Therefore, A Desk Study Report is carried out to satisfy the numerous regulatory needs of Planning Departments, Environmental Health Departments, the Atmosphere Agency, Building Control Departments and National House Building Council (NHBC).



Property Transactions (Due Diligence) - ahead of acquiring a site or property, as a minimum requirement we recommend a Desk Study is carried out to determine and evaluate any potential risks related with all the site and also the liabilities which the potential buyer will obtain.



When really should a Phase 1 Desk Study be undertaken?

A Phase I Desk Study is generally carried out at the get started of your site investigation process. The Desk Study characterises the site and provides information and an initial conceptual ground model for the remainder (if expected) on the site investigation process.



What's included within a Phase 1 Desk Study Report?



At Sub Surface our Phase 1 Desk Study Reports include:



Executive Summary - a summary from the report and findings on one web page.



Site Information - Site Location, Site Boundaries, Present Land Use, Proposed Site Use, Particulars with the Walkover Survey.



Historical Appraisal - a review of historical Ordnance Survey plans on the past uses and structures on site plus the immediate surrounding region.



Geological Appraisal - Artificial Ground, Superficial Strata, Bedrock, Mining, Geomorphology, All-natural Ground Subsidence, Radon Gas, etc.



Environmental Appraisal - Prospective Contamination Sources, Pollution History, Landfill Sites, Hydrogeology and Hydrology, Flooding, etc.



Conceptual Ground Model - a preliminary risk assessment of prospective ground connected hazards and possible contamination sources, their pathways and receptors where there could possibly be potential risks to human health, vegetation, controlled waters, structures and services.



Site Investigation- Suggestions (if needed) which includes, Contamination Analysis, Ground Gas Monitoring, and so forth.



What is a Walkover Survey?

All of our Phase 1 Desk Studies include things like a Walkover Survey (Site Reconnaissance). A Walkover Survey is actually a pay a visit to to site by an Engineer to undertake a thorough inspection with the site to confirm, amplify and supplement the facts inside the Desk Study and to visually and olfactorily assess any potential zones of contamination.



What takes place in the event the site is inside a Coal Mining Location?

For sites situated within an area that might be affected by mine workings (parts of Lancashire, Manchester, Yorkshire, Derbyshire, West Midlands, and so on.), a Coal Authority Mining Report is going to be needed and incorporated inside the Phase 1 Desk Study.



If the Coal Authority Mining Report indicates that there's a doable danger to ground instability and subsidence, or if we believe there is a possible for unrecorded mines beneath the site or mine entries, a Coal Mining Risk Assessment might be necessary.



What will be the Benefits of a Phase 1 Desk Study?

There are plenty of benefits of carrying out a Phase 1 Desk Study prior to commencing an intrusive site investigation or purchasing a site, which includes:



Identifying possible geotechnical, environmental and health and safety troubles, which could substantially influence the site investigation and/or the project.



The formulation of a preliminary danger assessment allows for efficient targeting of project resources and avoids money getting wasted on inappropriate intrusive ground investigations.



Present early warning of attainable delays or spending budget implications by means of previously unknown site characteristics.



Provides facts on feasible contaminants and anticipated areas of contamination.