A Phase 1 Desk Study is often a preliminary threat assessment in the collation and review of published information relating to a sites historical, geological and environmental setting. Get much more information and facts about adeptus.co.uk/phase-1/desk-study-report-contamination
The objective of a Desk Study is always to figure out a preliminary risk rating and to program the subsequent stages of your site investigation. This can be achieved by identifying any prospective ground related hazards and possible contamination sources, pathways and receptors exactly where there could be possible risks to human health, vegetation, controlled waters, structures and services.
High Excellent, Comprehensive Phase 1 Desk Study Reports by Skilled Engineers!
Please note, Every Phase 1 Desk Study Ought to include things like a Walkover Survey. This can be a requirement by the Local Authorities! Getting a report without the need of a Walkover survey are probably to become rejected or an extra Planning Condition will likely be added. Additionally, the risk of unforeseen site investigation fees and liabilities significantly increases.
Do I want a Phase 1 Desk Study?
You will discover usually two scenarios for requiring a Phase 1 Desk Study:
Establishing a Site - a Phase 1 Desk Study (Preliminary Risk Assessment) will frequently be a requirement within the Planning Situations set out by the Local Authority Planning Division. Therefore, A Desk Study Report is carried out to satisfy the a variety of regulatory specifications of Planning Departments, Environmental Health Departments, the Atmosphere Agency, Building Control Departments and National House Building Council (NHBC).
Property Transactions (Due Diligence) - just before purchasing a site or property, as a minimum requirement we advocate a Desk Study is carried out to recognize and evaluate any prospective dangers associated with the site along with the liabilities which the potential buyer will obtain.
When should a Phase 1 Desk Study be undertaken?
A Phase I Desk Study is ordinarily carried out in the start of the site investigation process. The Desk Study characterises the site and supplies data and an initial conceptual ground model for the remainder (if needed) of the site investigation process.
What's integrated inside a Phase 1 Desk Study Report?
At Sub Surface our Phase 1 Desk Study Reports include things like:
Executive Summary - a summary on the report and findings on one web page.
Site Facts - Site Location, Site Boundaries, Present Land Use, Proposed Site Use, Details from the Walkover Survey.
Historical Appraisal - a review of historical Ordnance Survey plans of your previous uses and structures on site as well as the instant surrounding area.
Geological Appraisal - Artificial Ground, Superficial Strata, Bedrock, Mining, Geomorphology, Organic Ground Subsidence, Radon Gas, and so on.
Environmental Appraisal - Possible Contamination Sources, Pollution History, Landfill Sites, Hydrogeology and Hydrology, Flooding, etc.
Conceptual Ground Model - a preliminary threat assessment of prospective ground connected hazards and prospective contamination sources, their pathways and receptors exactly where there could be prospective dangers 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's a Walkover Survey?
All of our Phase 1 Desk Studies include things like a Walkover Survey (Site Reconnaissance). A Walkover Survey is really a stop by to site by an Engineer to undertake a thorough inspection on the site to confirm, amplify and supplement the information and facts inside the Desk Study and to visually and olfactorily assess any prospective zones of contamination.
What occurs if the site is within a Coal Mining Region?
For sites positioned within an area that could be impacted 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.
In the event the Coal Authority Mining Report indicates that there is a attainable threat to ground instability and subsidence, or if we think there's a potential for unrecorded mines beneath the site or mine entries, a Coal Mining Danger Assessment will likely be needed.
What would be the Benefits of a Phase 1 Desk Study?
There are many benefits of carrying out a Phase 1 Desk Study prior to commencing an intrusive site investigation or purchasing a site, including:
Identifying potential geotechnical, environmental and health and safety issues, which could significantly influence the site investigation and/or the project.
The formulation of a preliminary danger assessment enables for efficient targeting of project sources and avoids money being wasted on inappropriate intrusive ground investigations.
Present early warning of probable delays or budget implications by means of previously unknown site qualities.
Offers information on possible contaminants and anticipated regions of contamination.
