Geotechnical & Environmental

Background/History ARP Geotechnical Ltd has been in existence since 1999, but was formerly part of ARP Associates and the Firm has always implemented Geotechnical Investigations.  The department has expanded over the years and diversified into Contamination Risk Assessment, which is now a major requirement for any development.  ARP Engineers have both geological and engineering backgrounds and aim to produce concise and user-friendly reports to provide viable engineering solutions for construction and remediation. Remediation Design & Validation     ARP have a long track record of specifying remediation solutions for contaminated sites, in consultation with Clients and Regulators. To comply with planning requirements, there is always a need to confirm that the contamination has been remediated in accordance with the agreed Planning Conditions.  The Company are conversant in ensuring that there is an effective 'paper trail' in relation to the excavation and disposal of contamination, and the import of clean uncontaminated subsoil and topsoil.  Validation of gas protection membranes is often also required.  Site visits, sampling and remediation validation reports are a major part of our service to Clients.

Tier 1 Desk Studies The Company is often required to prepare desk study reports incorporating Contamination Risk Assessments, which can be used to obtain planning approvals for a variety of developments.  These include assessments of geological and mining aspects, site history from archive maps, environmental issues, hydrogeology and hydrology, landfills and gas migration, radon protection requirements, and indicative flood risk.     Geotechnical Investigations    Geotechnical investigations for engineering aspects is a forte of the Company, and trial pits, boreholes, and scheduling of samples for laboratory assessment all form part of the appraisal to produce engineering solutions for development.  These will include solutions for foundations, road pavement, surface water disposal using soakaways, and other engineering aspects. Slope Stability Assessment   The Company has a long experience of conducting the investigation of slopes to determine slope stability.  This is usually achieved by walkover surveys, borehole investigation of slope profiles, and monitoring of installations for groundwater levels.  Detailed analysis is then carried out using GEO 4 Software to determine the existing stability, and assess the stability and suitability of any proposed remedial measures such as slope reprofiling or drainage.

Tier 2 Geo-environmental Reports   The Company has developed the capability of preparing detailed Contamination Risk Assessments in accordance with published guidance, to meet planning requirements.  Quantitative assessments of contamination, using the latest software, form part of the service, and Remediation Method Statements are prepared to satisfy Planning Conditions.  These reports also include full recommendations for engineering and geotechnical aspects.   Ground Stabilisation   The identification of ground stabilisation requirements, the letting of tenders, and supervision of works, are often undertaken by the Firm in areas where ground conditions cannot support development.  We also prepare validation reports on completion, to satisfy planning conditions. The solution is often injection of grout through rotary boreholes, to fill broken ground and/or voids from shallow mine workings.  Other stabilisation techniques the Firm has specified include the installation of stone columns by vibratory techniques, lime stabilisation, and dynamic compaction