Stormwater management is no longer an optional consideration for construction and development—it’s a core requirement. With increasing planning scrutiny, climate-driven rainfall patterns and sustainable development standards, getting the drainage strategy right from the outset is critical. In this case study, we explore how Enviroseal’s professional attenuation pond installers helped transform a previously flood-prone commercial site into a fully compliant, sustainable and future-proof development.
The Challenge: Frequent Flooding and Planning Pressure
Our client, a large commercial developer in the South East of England, was facing multiple setbacks. Their proposed logistics park was situated on low-lying land with heavy clay soils and poor natural drainage. Historical data indicated frequent surface water flooding during moderate rainfall events, raising serious concerns with the local planning authority. As part of their Sustainable Drainage Strategy (SuDS), the council required proof of long-term stormwater attenuation to prevent runoff into surrounding infrastructure and watercourses. Time was tight and the developer needed a solution that not only met environmental regulations but also integrated smoothly with the build schedule.
The Solution: Tailored Attenuation Pond Design and Installation
Enviroseal’s attenuation pond installers were brought in during the pre-construction phase to assess the site, consult with planners and produce a custom drainage plan. After detailed site surveys, infiltration testing and flow modelling, our team proposed a large-capacity attenuation pond designed specifically for the site’s terrain and runoff characteristics. The design incorporated a reinforced geomembrane lining to manage the clay conditions, a silt trap and forebay to reduce sediment buildup and a flow-control chamber to manage discharge rates in line with greenfield runoff standards. These features ensured that the system would perform efficiently, reduce maintenance needs and exceed regulatory expectations.
Enviroseal handled the full installation—from excavation and shaping to lining and outlet configuration—working closely with the civil engineering team to ensure integration with other groundworks. Our in-house crew completed the project on time, despite poor weather conditions and complex ground levels, thanks to meticulous planning and specialist equipment.
The Results: A Compliant, Resilient and Low-Maintenance Drainage Asset
The completed attenuation pond system now retains and controls runoff from the entire 15-acre site, discharging it at a controlled rate to prevent downstream flooding. Since installation, the site has experienced multiple heavy rainfall events, all managed without any pooling or overflow. Notably, the system passed all local authority inspections and contributed directly to the successful approval of the final site plans. The attenuation pond not only ensured SuDS compliance but also added ecological value with integrated planting and natural habitat features, helping the developer meet biodiversity net gain targets.
The client now has a fully documented, maintainable asset that protects the development’s infrastructure, satisfies environmental responsibilities and demonstrates a clear commitment to sustainable design.
Why Enviroseal?
This project illustrates why leading developers across the UK trust Enviroseal’s attenuation pond installers. Our expertise in both engineering and compliance enables us to solve complex drainage challenges and deliver systems that perform reliably for decades. We understand how to navigate planning, work with consultants and install with precision—even on sites that others consider problematic. From pre-planning consultation to final sign-off, Enviroseal provides a comprehensive, trusted service that removes risk and adds long-term value to every development.
A Model for Sustainable Commercial Drainage
Enviroseal’s involvement transformed a high-risk site into a benchmark for sustainable drainage in commercial development. Through intelligent design, skilled installation and close coordination with stakeholders, our attenuation pond installers helped the client avoid costly delays, meet strict environmental conditions and future-proof the site against worsening weather patterns. If your project demands a stormwater solution that delivers performance, compliance and reliability—Enviroseal is the trusted partner that gets it right the first time.
For further information or to discuss project requirements, please contact Enviroseal at 01695 228 626 or enquiries@enviroseal.co.uk.
