The following suppliers may have aggregates recommended for HydroSTON pavement substructures:
- Bedding layer:
2-5 mm graded or 5 mm single size LOW FINES crushed rock preferably basalt. - Base course: 5-20 mm graded LOW FINES crushed rock preferably basalt.
- Sub-base (if required): 20-40 mm graded LOW FINES crushed rock.
SYDNEY REGION
| SUPPLIER | LOCATION & PHONE NO | COMMENTS |
| Turtle Nursery and Landscape Supplies | Rouse Hill 02 9629 2299 – South Windsor 02 4574 3299 | |
| BC Sands | Taren Point 02 8543 3400 | |
| Menai Sand & Soil | Lucas Heights 02 9543 5333 | |
| Materials in the Raw | Chullora 02 9742 5478 | |
| Crystal Building Supplies | Petersham 02 9569 4895 | |
| Benedict Sand & Gravel | Moorebank 02 9986 3500 | -3mm +1mm Cowra quartz joint filler |
| P B White Minerals | Londonderry 02 4578 9009 | Joint filler for HydroCERA |
MELBOURNE REGION
| SUPPLIER | LOCATION & PHONE NO. |
| Essendon Quarries | Essendon 03 9337 9280 |