A BRE365 infiltration test (also called a percolation test) determines whether the ground on your site is suitable for infiltration-based drainage such as soakaways. It's often required to support a SuDS design where infiltration is being considered as the primary means of managing surface water. [...]

Yes. Nimbus Engineering works nationwide, with offices in Livingston (Scotland) and London. We liaise directly with Local Planning Authorities and Lead Local Flood Authorities across the UK, so we understand the varying SuDS and drainage requirements in different regions.

Turnaround depends on site complexity and the information available, but Nimbus works to meet planning deadlines and can often accommodate tight timescales. We recommend getting in touch early with your site details so we can advise on a realistic timeframe and what information we'll need [...]

A Flood Risk Assessment (FRA) evaluates the risk of flooding to and from your development from rivers, surface water, groundwater and other sources, while a SuDS report focuses specifically on how surface water runoff will be managed and attenuated on site. Many planning applications require [...]

A SuDS (Sustainable Drainage Systems) report sets out how surface water will be managed on your development to mimic natural drainage and prevent increased flood risk. Most Local Planning Authorities and Lead Local Flood Authorities (LLFAs) require a SuDS report to validate a planning application [...]