Flood Risk Assessments
Flood risk assessments (via PPS25) are a planning requirement on many sites. Factors to be considered vary from site to site but always require appraisal of the site surface water drainage and the effects of climate change.
Work that might be required on a project might include assessment of flooding effects from the sea, or watercourses such as rivers, streams, and ditches. This would include, when necessary, hydraulic modelling of water courses or breach analysis when flood defences are involved. An outline analysis of the storm water drainage design is a fundamental requirement in most cases.
Our site specific reports cover all relevant issues, including the results of liaison with the Environment Agency. These reports encapsulate the appropriate analysis and assessments and, where necessary, will include specifying design considerations to mitigate flooding effects. The preparation of evacuation plans is also part of this service where appropriate.
Our flood risk assessments are carried out by chartered engineers who will produce a comprehensive report to meet your needs in a format that is acceptable to the local planning authority and the environment agency.
Geo-environmental and Geotechnical Investigations
PRP undertake all types of site investigations on all types and scale of developments. PRP carry out phase I (desktop study) and phase II investigations by means of test pits, window samples or boreholes as appropriate. As part of this process we carry out infiltration testing for SuDs designs.
We can also undertake soils testing – both geotechnical and contamination. The whole of the above is then encapsulated in a comprehensive concise geotechnical and geo-environmental report including full contamination assessments in accordance with planning law requirements.
We offer topographical surveys and below ground services surveys and searches.
Drainage & SuDS
PRP have a wealth of experience in the design of stormwater and foul water drainage systems. This can range from a single small diameter private sewer to a large culvert requiring local authority, water services company or Environment Agency approval.
PRP are able to design and obtain technical approval for all drainage systems that need to be adopted and therefore comply with the requirements of section 104 and 106 of the Water Industry Act 1991.
To provide the most efficient solution PRP use the latest software packages including Micro Drainage WinDes to assist in producing the correct solution and all drainage works are undertaken or supervised by a chartered engineer to ensure that the design is appropriate and cost effective and completed within the necessary timeframe.
PRP use a direct approach when dealing with statutory undertakers and consequently have built up excellent relationships with many of them. This has been proven time and time again to be of significant benefit to the client since substantial time and hence costs can be saved.