Location: New Dawn Centre for Social Innovation
Address: 75 Prince Street, Sydney
The LID demonstration site at the New Dawn Centre for Social Innovation was designed in consultation with CBCL Ltd, in Halifax, as well as the property owners and Atlantic Stormwater Initiative staff. The property is centrally located and already serves as a gathering point for community activities in Sydney. The LIDs were located on a part of the property that has experienced flooding and that is easily accessed by the public.
The site was designed to be able to handle the first 15 mm of a rain event on site. A combination of a vegetated bioswale with several examples of permeable hard-surface options was installed in October 2016.
The bioswale is L-shaped to best capture the runoff from the surrounding parking lot. The bioswale has a 0.5 m deep bed of aggregate, acting as water storage, and connects to the municipal storm drain system. This is covered by topsoil and compost and has been planted with native species.
The permeable hard surface options were installed on a 1 m-deep bed of aggregate, topped with a 5-15 cm thick layer of pea gravel. The following were then installed in 10′ x 10′ adjacent sections:
Grass grid pavers, supplied by Core Systems
Gravel grid pavers, supplied by Core Systems
Concrete grass pavers, supplied by Shaw Brick
Cement semi-permeable pavers, supplied by Shaw Brick
A 200 sq. ft permeable asphalt pad will be installed in the spring, by Municipal Ready Mix.
The excavation work was completed by McMullen Landscaping, and ACAP Cape Breton supplied the native plants for the bioswale.
Signs will be installed at the site to highlight key features.