Past CRR Projects
Since 1994 the Catchment Remediation Rate program has funded the construction of more than 430 Stormwater Quality Improvement Devices (SQIDs) (PDF 42.6MB) across Hornsby Shire. These SQIDs help improve the quality of stormwater by removing pollutants such as litter, sediment, nutrients, and heavy metals retaining and slowing stormwater flows. Projects include the following devices and works:
- Biofilters (also known as Bioretention Basins or Raingardens) – vegetated sand filters that trap litter, remove sediment and filter out pollutants such as nutrients and heavy metals.
- Biofilter and Raingarden Factsheet (PDF 122kb)
- Examples of Biofilter interpretive educational signage:
- Generic Biofilter sign (at various locations around Hornsby Shire) (PDF 366kb)
- Lyne Road, Cheltenham (PDF 375kb)
- North Street and Parrish Place, Mount Colah (PDF 362kb)
- Bellamy Street, Pennant Hills (PDF 460kb)
- Duneba Drive, Westleigh (PDF 366kb)
- Parsley Bay, Brooklyn (PDF 451kb)
- Orara Park footpath, Waitara (PDF 223kb)
- Pennant Hills Park Synthetic Soccer Field (PDF 258kb)
- Asquith Oval, Asquith (PDF 227kb)
- Berowra Waters Road, Berowra Hts (PDF 217kb)
- Gross pollutant traps – a range of rubbish racks, baskets, nets and other infrastructure that remove litter, leaves and sediment from stormwater runoff.
- Continuous Deflective Screening (CDS) devices – underground concrete chambers that screen stormwater by using a vortex action to capture pollutants.
- Graduated trash racks – angled screens that use streamflow velocities to capture organic matter and gross litter pollution.
- Sediment basins – trap sediment from stormwater preventing it entering waterways.
- Artificial wetlands – similar to sediment basins but generally larger and vegetated by native aquatic plants.
- Stormwater harvesting schemes – collect stormwater runoff to be reused for irrigation on playing fields and ovals.
- Examples of Stormwater Harvesting interpretive educational signage:
- Epping Oval (PDF 438kb)
- North Epping Oval (PDF 465kb)
- Thornleigh Oval (PDF 368kb)
- Examples of Stormwater Harvesting interpretive educational signage:
- Leachate treatment facilities – treat polluted leachate from two of the Shire’s former tip sites at Arcadia Park and Foxglove Oval.
- Creek remediation works – the stabilisation of creek and drainage lines to prevent further erosion.
| Site Location | Device | Status |
|---|---|---|
  Normanhurst Park, Normanhurst | Gross Pollutant Trap , Biofiltration Basin & Stormwater Harvesting | Completed |
| Margaret Ave, Hornsby Heights | Gross Pollutant Trap A gross pollutant trap was completed in December 2021 at Margaret Ave, Hornsby Heights. The gross pollutant trap will provide treatment to stormwater flows by screening and capturing water pollution such as litter and floatable waste from entering our bushland and waterways. | Completed |
 Nirimba Reserve, Epping | Biolfiltration and Creek line Remediation A biofiltration basin and creek line remediation works were completed in November 2021 at Nirimba Reserve, Epping (photo attached). The biofiltration basin included plantings that will provide pollutant removal by supporting microbial processes that utilise nutrients amongst other pollutants. The project also re-established the natural features of the watercourse (i.e., plunge pools, settling pools etc.) that provide habitat and enhanced the ecological diversity of the site. | Completed |
| Site Location | Device | Completion |
|---|---|---|
 Thomas Wilkinson Ave, Dural | Biofiltration Basin | 15-01-20 |
 Cawthorn Rd ( Rofe Park), Hornsby | Gross Pollutant Trap , Biofiltration Basin & Stormwater Harvesting | 24-04-20 |
 Lessing Park , Hornsby | Gross Pollutant Trap, Biofiltration Basins | 23-10-20 |
 Reddy Park , Hornsby | Gross Pollutant Trap | 06-11-20 |