Construction

Optimal Stormwater design and construction projects deliver quality solutions for reliable performance, safe and practical operation and maintenance and balanced operating cost.  Optimal design, construct and operate under third party quality assured Integrated Management System (IMS) Standards AS/NZS ISO 9001:2016 & AS/NZS ISO 14001:2016 & AS/NZS 4801:2001

We prepare comprehensive construction methodologies, shoring design, pipeline and hydraulic specification, utility protect plans, flow management plans, pedestrian and traffic safe work methods statement, site induction, environmental management plans and community consultation are standard features of our construction projects.

Auburn Council, D&C of the Botanic P2018 CDS Unit

Optimal Stormwater completed the Design & Construction of yet another CDS unit at Auburn. This one was complex to locate and design, downstream of the Auburn Botanic Gardens, and treating a significant catchment. The site was tidal, and the drop […]

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Sutherland Shire Council Design and Construct (and fix) GPT’s

Sutherland Shire Council also engaged Optimal Stormwater to design a submerged trash rack GPT at Kurnell, which was the only option due to incredible hydraulic constraints. They also engaged Optimal Stormwater to fix a bypass capacity issue they had with […]

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Sutherland Shire Council Design and Construct GPT’s at Bundeena

Sutherland Shire Council wanted to treat a 7ha catchment at Bundeena, draining to the creek/wetland behind the town. Optimal Stormwater proposed a graduated trashrack for this site, based on the type of pollutants, their loading and the cleaning methods available. […]

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Blacktown City Council – Rooty Hill & Popondetta GPT construction

Optimal Stormwater has also recently built two large CDS units for Blacktown City Council – the Rooty Hill Rd one (designed by Optimal), and another CDS unit at Popondetta (which ended up being re-designed by Optimal). The construction on these […]

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Blacktown City Council 4 GPTs Design and Construct

Murray Powell teamed up with another consultant group on this project. Murray provided the concept design, location, sizing, siting, coordinated the drawings, suppliers and subcontractors. He did the detail design and project management of the project’s delivery for 4 large […]

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Sutherland Shire Council Design and Construct CDS unit at Cronulla

Optimal Stormwater did the feasibility and concept design for a CDS unit gross pollutant trap for a small catchment above Cronulla beach. Based on the results of this Optimal was invited to do the detail design and specification for the […]

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Waterloo Oval Stormwater harvesting pretreatment

Optimal Stormwater was engaged to do the construction of a large stormwater harvesting project at Waterloo in Sydney. City of Sydney are the client and the CDS unit GPT on the project was a P1009. Optimal have extensive experience with […]

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GPT Design, Supply and Installation of a P1512 CDS unit for Ryde City Council

Optimal Stormwater was once again selected by Ryde City Council for the design and construction of a CDS unit P1512 on a 750 pipe in Denistone East. The pipeline ran through a park with plenty of working room, but the […]

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Shellharbour City Council – D&C GPT at Albion Park Rail

Optimal Stormwater was selected for the design and construction of the next 2 GPTs for Shellharbour City Council. Optimal Stormwater had the best understanding of the project, and what was in Council’s long term best interest. Optimal Stormwater proposed to […]

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Lane Cove Council – D&C of CDS unit at Canberra Rd

Optimal Stormwater was successful in winning a tender for the design and construction of a GPT for Lane Cove Council treating a section of the Pacific Highway at St Leonards and draining all the way to Gore Bay in the […]

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Camden Council – removal and replacement of a large old style existing GPT

Optimal Stormwater was selected to look at the feasibility of decommissioning an old style GPT for Camden Council located at Mt Annan. The very old GPT had a myriad of problems, that included its being online, having backwater issues, a […]

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Shellharbour City Council – D&C GPT at Warilla

Optimal Stormwater was selected for the D&C of a GPT at Warilla. The site was very hydraulically challenging, with 3x 1800 pipes on a very flat grade entering a creek. The backwater and potential hydraulic impact of any solution made […]

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Stormwater conveyance and Creek Rehabilitation at Loftus for Sutherland Shire Council

On the back of some tricky insitu construction works, Optimal Stormwater was selected to add a pit, pipe and creek rehab, to a site in the Dept of Defence lands at Loftus. This training base had a very strange stormwater […]

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