AtlanTrap (Formerly StormSack)
AT-SOURCE GROSS POLLUTANT TRAP (GPT)
AtlanTrap (formerly StormSack) is a SQIDEP-verified water quality device that provides GPT and filtration capabilities for stormwater treatment and WSUD (Water Sensitive Urban Design) applications.
Easily retrofitted into new or existing structures, AtlanTrap filtration technology offers a decentralised approach to stormwater treatment. This system allows conventional infrastructure, such as stormwater drains, kerb inlets, pits and catch basins, to be repurposed and customised to meet site-specific water quality goals.
Ideal for deployment directly in stormwater catchments to capture pollutants close to surface level – AtlanTrap is easy to install and maintain.
AtlanTrap’s serviceability from ground level reduces operational costs by ensuring direct, quick and safe access during maintenance and clean-outs.
Features & Benefits
Efficient At-Source Gross Pollutant Capture
Designed to capture gross pollutants, sediment, litter, microplastics, oil and grease effectively within stormwater drains, pits and catch basins.
Engineered for Water Quality
A decentralised SQID (stormwater quality improvement device), aligning with LID (Low Impact Development) and WSUD (Water Sensitive Urban Design) criteria for sustainable water management.
Adjustable Design
Standard sizes: 450x450mm 450x600mm 600x600mm 900x600mm 900x900mm Custom combinations of our standard range can be accommodated with specific framing and support systems. Contact us to discuss your project.
Retrofit Capability
Easily integrates into new or existing stormwater infrastructure, repurposing traditional systems to meet specific site water quality goals.
Ease of Maintenance
Direct grate access from site surface level, making cleaning faster and simpler with conventional vacuum suction equipment.
MUSIC Modelling
MUSIC modelling available to facilitate stormwater treatment train design, combinations with bioretention or other Atlan systems.
SQIDEP Test Treatment Efficiencies*
| POLLUTANT | EFFICIENCY* |
|---|---|
| Gross Pollutants (GP) | 100% |
| Total Suspended Solids (TSS) | 45% |
| Total Phosphorus (TP) | 47% |
| Total Nitrogen (TN) | 25% |
*Contact us to confirm approval performance for the project LGA.
Research verified removal rates:
| POLLUTANT | EFFICIENCY |
|---|---|
| Microplastics | 35% to 88% |
Applications
- Council Storm Drain Retrofits
- Commercial/Retail/Residential
- Litter Prone Urban Areas
- Scrap Metal/Solid Waste/Oil Storage/Etc
- Part of Treatment Train
- Construction Sediment
Interactive 3D Drawing
| APPLICATION | REGULATORY ISSUE | TARGET POLLUTANTS |
|---|---|---|
| Council Storm Drain Retrofits | At-source litter capture | Sediment, Litter, O&G |
| Commercial/Retail/Residential | Stormwater Compliance | Sediment, Litter, O&G |
| Litter Prone Urban Areas | Cost effective litter control | Litter from 5mm |
| Scrap Metal/Solid Waste/Oil Storage | Industrial Multi-Sector General Permit | Gross Pollutants, O&G |
| Part of Treatment Train | Council Stormwater Quality Improvement Targets | Sediment, Litter, O&G |
| Construction Sediment/Erosion | Sediment Control Plan | Sediment/Erosion Control |
AtlanTrap Resources
(formerly StormSack)
AtlanTrap (Formerly StormSack) FAQ
What is the AtlanTrap?
AtlanTrap is a Stormwater Quality Improvement Device (SQID) with SQIDEP-verified pollution removal capabilities. An at-source GPT system, or decentralised stormwater treatment asset, it is installed close to site level in infrastructure such as stormwater drains, pits and catch basins.
AtlanTrap is a GPT (Gross Pollutant Trap) and filtration solution, designed for deployment in stormwater systems to capture contaminants close to site surface level. It is engineered for easy maintenance and can be retrofitted into new or existing structures.
How does the AtlanTrap work?
The AtlanTrap is a SQIDEP-verified Gross Pollutant Trap (GPT) which allows pollutants to be captured close to site surface level. Installed underneath grates in locations such as driveways and kerb inlets, AtlanTrap’s bag is designed to screen a wide range of urban stormwater pollution including gross pollutants, sediment, litter and microplastics.
As water flows through AtlanTrap’s durable, permeable bag, it captures stormwater pollutants such as litter (gross pollutants), sediment, and nutrients (phosphorus and nitrogen).
This high-performance Stormwater Quality Improvement Device (SQID) provides effective capture of solid pollutants and debris typical of urban runoff, and can be installed in existing or new stormwater drain infrastructure.
What are the key features of the AtlanTrap?
Maintenance: Easy to maintain and access through grates, and can be cleaned with conventional vacuum suction equipment.
Robust Design: Ultra-durable injection moulded plastic frame available in a range of models and sizes, featuring Atlan TrapCatch bracket system.
Quick Installation: Quick and easy to install, particularly in retrofit scenarios such as stormwater pits and catch basins.
Cost-Efficiency: A SQIDEP-verified GPT for efficient capture of stormwater pollution – reduced overheads with easy of intallation and maintenance.
Customisation: Available in multiple sizes and configurations to suit your site specifications.
Construction: Features an injection moulded plastic frame, reinforced AtlanTrap bag, and Atlan TrapCatch support brackets.
What types of applications is the AtlanTrap suitable for?
The AtlanTrap is suitable for a range of applications, including:
- Council stormwater drain retrofits, kerb inlets, catch basins, and pits
- Commercial, retail, and residential areas
- Litter-prone urban areas
- Scrap metal, solid waste, and oil storage
- As part of a treatment train
- Construction sediment control
Can the AtlanTrap be used in existing stormwater systems?
Yes, the AtlanTrap is designed to be easily retrofitted into both new and existing stormwater infrastructure. A versatile stormwater quality improvement device (SQID), AtlanTrap can be installed in stormwater drains, kerb inlets, pits and catch basins – allowing them to be customised to meet project water quality objectives.
What is MUSIC modelling, and how can it be accessed for the AtlanTrap?
MUSIC (Model for Urban Stormwater Improvement Conceptualisation) modelling is a tool used for urban stormwater improvement. MUSIC models for the AtlanTrap are available for various councils and regions throughout Australia and can be downloaded from our website.
How often should the AtlanTrap be maintained?
To ensure full operational capacity, it is vital to ensure that the pollutants each AtlanTrap captures are periodically removed, and filtration components are thoroughly cleaned.
The AtlanTrap must be checked on a regular basis to assess whether it requires maintenance or cleaning. In accordance with WSUD requirements, AtlanTrap bags should be routinely cleaned out and inspected 2-4 times a year.
This maintenance frequency depends on the level of pollutants and site conditions. However, the design of the AtlanTrap makes it easier and quicker for service technicians to clean than alternative on-site Gross Pollutant Trap systems (GPTs).
Does the AtlanTrap comply with Australian stormwater standards?
Yes. AtlanTrap is SQIDEP-verified and accepted by Australian local councils and state planning authorities as a compliant at-source stormwater treatment device. Performance data is available for MUSIC modelling, and Atlan can confirm LGA-specific approval requirements.
What is an At-Source GPT and how does it differ from an End-of-Line GPT?
An at-source GPT captures stormwater pollutants at the point of entry to the drainage system, preventing their conveyance to downstream treatment devices, detention infrastructure, and ultimately our waterways.
An end-of-line GPT, such as the Atlan BaffleBox, treats larger volumes of collected flow at the end of the drainage network, and runoff from larger catchment areas.
At-source treatment is effective at treating smaller catchment areas, or as part of a broader network of at-source assets – ideal for distributed pollution control across large catchments.