The TNS™ is a subsurface retention and passive-irrigation asset that removes runoff from the surface network – displacing detention basins and outfall drainage.
Surface ponding and flood-immunity constraints on access and egress resolved without importing fill.
Distributed storage in the road reserve in place of a centralised basin and a long outfall – no pumps.
Land recovered from detention can lift lot yield by up to ~4%.
Sized to deliver the runoff volume reduction the code asks for, with flow monitoring providing the record.
Where works are dedicated as a council asset, we pursue the trunk stormwater function argument. Positions confirmed in writing with the clause named, before anything is relied on.
Cooler, greener streets, and a better flood status on search reports.
Where a development also carries stormwater quality obligations, those are met by separate, appropriately certified measures. We’ll model your site before you commit.
We’ll model your site before you commit, and show what the retention approach recovers in developable land.
Request a site feasibility assessment