Dewatering Services

When excavations encounter water-bearing soils or groundwater, dewatering is often required. This temporary process involves designing and managing groundwater systems to ensure work is carried out safely.

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Dewatering Services

When project excavations encounter water-bearing soils, or groundwater, dewatering is typically essential. Often classified as a temporary works process, dewatering encompasses the design, implementation, and management of appropriate groundwater systems that ensure tasks are safely completed.

As experts in groundwater management and dewatering, ENV’s team of engineers collaborates with clients to pinpoint and comprehend groundwater-related risks tied to their projects.

We offer an all-inclusive groundwater consulting and construction dewatering service. Our main objective is to understand and manage groundwater-related risks and physically dewater excavations using our fleet of dewatering equipment and water treatment equipment.

Step 1: Planning

Installation of groundwater monitoring.
Setting up and managing groundwater logging devices to accurately determine the standing water level (SWL)
Collection, analysis, and interpretation of groundwater samples with our portable monitoring equipment or laboratory service to ascertain groundwater treatment requirements
Groundwater modelling and mapping to estimate flow rate and groundwater treatment requirements

Step 2: Approvals

Preparation of Dewatering Management Plans adhering to relevant standards and guidelines in both QLD and NSW
Compilation of Soil and Water Management Plans
Completion of Acid Sulfate Soils Investigations and Acid Sulfate Soils Management Plans
Preparation, submission, and management of the groundwater approvals, for example, with Council and WaterNSW

Step 3: Dewatering

Well point dewatering systems: Consists of closely spaced, small diameter water abstraction points (well points) connected to a manifold, which is then attached to an appropriately sized pump. These are common for trench dewatering, footing dewatering, and shallow basement dewatering in permeable soils
Deep well dewatering systems: Involves the installation of larger diameter wells, typically set at 1.5 – 2.0 times the excavation depth. Rarely used independently, ENV’s engineers coordinate with clients to determine on the optimal spacing between wells. This ensures the wells work together to reach drawdown targets in deeper excavations. These systems are typically chosen for deeper excavation dewatering
Sump dewatering and open pit dewatering systems: A method to remove accumulated water from the lowest point of an excavation, pit, or pond. This is frequent in civil construction, mining, and deep excavations with low soil permeability

Step 4: Monitoring and Reporting

Monitoring of the receiving environment’s water quality (environmental monitoring).
Compliance reporting and completion reports, as mandated by WaterNSW

The ENV Proven Process

DEFINING PROBLEMS

Inception Meeting

We align with your goals, assess challenges, and outline a clear project scope. By understanding your environmental needs and compliance requirements, we create a strategic, tailored approach for sustainable success.

DEFINING PROBLEMS

Investigate & Evaluate

We identify information gaps, gather and review data, assess risks, and determine stakeholder needs. This ensures a comprehensive understanding, guiding informed and effective environmental solutions.

CREATING SOLUTIONS

Solution Design

We collaborate and think creatively to develop tailored environmental solutions. By exploring and assessing multiple options, we ensure the most effective, compliant, and sustainable outcome for your project.

CREATING SOLUTIONS