• North Parade, P3024 CDS unit

• Rooty Hill Rd, South, P3018 CDS unit, with a double depth sump

• Luxford Rd, Humegard HG30

• Saipan Rd, Humegard HG50

• North Parade Carpark, P1009 CDS unit

Optimal won the works based on the reputation and experience of key staff at Optimal Stormwater, plus the successful delivery of previous design and construct projects with Council. Having in-house civil, structural and hydraulic engineers also helps.