Ryman Health Care Hamilton

The site had a significant amount of impermeable surface area which in turn creates a large volume of stormwater runoff that required treatment prior to it being discharged.

Through Hynds relationship with TDM Construction the construction partner, Hynds was provided with an opportunity to offer a stormwater treatment solution to Beca, the projects consulting partner.

The resulting solution was 88 Modules of Hynds Upflo Filter. The Upflo filter was chosen due to its high treatment flow rates and ability to remove 90% of TSS at 20 microns. The Upflo’s versatile manhole design allowed for very easy contractor installs whilst providing flexible design options.

The catchment was split into 3 sections,

Catchment 1 – 34 modules
Catchment 2 – 33 modules
Catchment 3 – 21 modules

TDM were able to prepare and excavate the site prior to the filters arriving. The Upflo filters were then delivered and craned into position for a just-in-time placement. This had significant benefits from a safety perspective, reducing the construction time, providing flexibility for install timing and reducing the amount of time subcontractors were on site.

The result was the successful delivery and installation of 88 Upflo modules and 90% of the TSS removed from the Waikato River. Following the success of this installation additional projects have been commissioned and completed, (see our Ryman Havelock North project).