Bundara Reserve rain garden
Concept, detailed design and construction advice
Hurstville Council and the Cooks River Sustainability Initiative, 2010

Equatica developed the concept designs, detailed designs and also provided construction advice for a raingarden treating runoff from a local residential catchment draining to Upper Wolli Creek in the Cooks River catchment. The treatment system is a "second generation" bioretention system including a saturated zone with a carbon source. A key component of the design was to retain excavated material on site and revegetate the mounds with native grasses and shrubs. The community was supportive of this concept as it also assisted in screening the residential area from the adjacent industrial area.

Thornley Street bioretention system
Concept and detailed design
Marrickville Council, 2009

Equatica developed concept and detailed designs for a bioretention system at Thornley Street in Marrickville South. Detailed designs were completed in collaboration with Martin Pell from Sprout. At this site, stormwater cascades down a rocky channel through a small bushland reserve, and used to spill onto a grassy area at the base of the channel. Equatica designed a stilling basin, bioretention system and high flow bypass channel, which were constructed in 2010. There's more information about the project here, including photographs during construction.

Federation Road bioretention system
Concept and detailed design
Marrickville Council, 2009

Equatica developed concept and detailed designs for a bioretention system at Federation Road in Newtown. Detailed designs were completed in collaboration with Martin Pell from Sprout. Levels were a key constraint at this site, which slopes significantly. With high pedestrian traffic it was important to avoid any large level changes at the edges of the system. This was the first bioretention system which Marrickville Council constructed in-house, therefore a simple design was developed, which was straightfoward to implement.

Chain of Ponds Reserve - Bioretention Swale
Concept and detailed design advice
Strathfield Council, 2009

Strathfield Council is in the process of upgrading the Chain of Ponds Reserve. As part of this upgrade a bioretention swale to treat local stormwater runoff was included in the plans for the site. Equatica worked closely with Councilís landscape architect and drainage engineer to develop the designs and also review the detailed designs.

Yarrowee Wetland and Stream Restoration Works
Concept design, detailed design and documentation
Strathfield Council and Sydney Metro CMA, 2009

This project will restore a small tributary of the Cooks River, where the existing channel is significantly degraded. Equatica developed concept and detailed designs for a constructed wetland, with a dual habitat and stormwater treatment function. The wetland will treat stormwater from two local residential catchments, and also control alligator weed in the drainage channel. Hydraulic modelling and catchment analysis was undertaken to understand water level variation and the inundation regime for the wetland. The plans also included key design considerations to create habitat for green and golden bell frogs.

Dunbar Park Wetland
Restoration strategy, concept and detailed design
City of Ryde, 2009-10

Dunbar Park wetland is a small constructed stormwater wetland. Equatica reviewed the current condition of the wetland and made recommendations for its rehabilitation, including weed removal and replanting, as well as modification of the inlet and high flow bypass to protect the wetland from future damage, and reprofiling to improve the stormwater treatment and habitat potential of the wetland. A concept design and cost estimates were discussed with Council in a workshop including parks, operations and maintenance staff. Equatica is currently completing detailed designs for the wetlandís restoration.

Hornsby WSUD design reviews
Concept and detailed design
Hornsby Shire Council, 2009

Equatica worked with Hornsby Council to review and develop stormwater treatment concept and detailed designs for several sites in the Hornsby LGA. Council's design staff are taking an active role in these projects. Each site involves treating stormwater before it is discharged into a bushland environment. At Lyne Road, Cheltenham, this bioretention system was constructed in 2009. It is the first time that Council has constructed a system with a saturated zone. Bioretention systems have also been constructed at Gundah Road, Mt Kuring-gai and at Oorin Road, Horsnby Heights.

Belinda Crescent Stormwater Treatment System
Concept and detailed design
Hornsby Shire Council, 2009

Equatica developed detailed designs for a stormwater treatment system which improves diffuse urban runoff quality before it discharges into Lane Cove National Park. The bioretention system utilises the natural sandstone features of the site to divert and temporarily pond water onto the site before filtering it through a soil media and discharging into the Lane Cove National Park. The system uses the natural rock features on the site to create a backdrop for the bioretention system. David Knights undertook the concept designs for the site and Peter Gillam developed the detailed designs. The system was constructed in 2010.

Kissing Point Park rain garden
Concept design advice
City of Ryde, 2009

The City of Ryde prepared a landscape masterplan for the upgrade of Kissing Point Park, which included a rain garden at the end of Yaralla Street. Equatica assisted the City of Ryde to develop the raingarden concept to functional design stage, including a workshop with design staff.

Meadowbank Park bioretention system
Concept and detailed design
City of Ryde, 2009

In conjunction with the Meadowbank Park stormwater harvesting and reuse project, Equatica also designed a bioretention system to treat stormwater runoff from a 1.5 ha residential catchment, prior to discharge to the Parramatta River. The biroetention system is located in the north-west corner of the park adjacent to the hockey field. A key challenge at this site was to work within tight level constraints to avoid services and ensure the treatment system would not be inundated in regular high tides.