The Greater Amman Municipality (GAM) Lagoon Remediation Project addresses the critical issue of contamination in a 100,000 sqm lagoon in Russeifa, east of Amman. The project is divided into two phases: remediation and prevention of future contamination, followed by the redevelopment of the area into a municipal park and green space.

Historically, stormwater from Marka Valley and surrounding areas flowed into the Zarqa River, but urban development and mining waste disposal blocked the natural flow, creating a stagnant and heavily polluted lagoon, which has made it susceptible to contamination from the surrounding area.

Engicon played a key role in the project's design and construction, including pumping stagnant water to the wastewater network, diverting incoming sewage, and constructing a settling basin to filter floodwater. A stormwater conveyance system with box culverts was installed to direct water to a 10,000 m3 irrigation tank, which included a pumping station. Additionally, a wastewater pumping station was built to manage sewage from Hittin Camp, while the contaminated soil was capped and the lagoon backfilled to the required design level.

Infrastructure development included constructing a pedestrian bridge, implementing a 1,400m reinforced pipeline using micro-tunneling to convey water to the Zarqa River, and developing a two-chamber structure to regulate flow. An outfall structure at the river was constructed with baffle walls to reduce velocity and stabilize the crossing area.

Engicon was responsible for preliminary hydraulic designs, quality control, and construction supervision, ensuring compliance with FIDIC contract conditions. The project also included environmental and safety inspections, commissioning, and final handover to GAM. Funded by the European Bank for Reconstruction and Development (EBRD), the project is a major environmental and urban regeneration initiative, transforming the lagoon into a sustainable public space while mitigating health and safety risks for the surrounding community.