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.

2019 Canterbury Bankstown Council Montgomery Avenue Graduated Trashrack

Canterbury Bankstown Council has been a leader in the management of stormwater and operate over 70 GPTs and other devices. Older technologies installed decades ago are being upgraded and over 2018- 2019 Optimal Stormwater assisted with the design and construction […]

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July 2019 Sutherland Shire Council – Kareena Road and Five Ways GPT

Gwawley Bay is the focal point for water quality improvement with heavy loads of pollution discharged in to the bay via stormwater. Through a detailed investigation Kareena Road in Caringbah and  Fiveways intersection in Miranda were identified by Optimal Stormwater […]

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2019 Design and Construct 5 Gross Pollution Traps and Graduated Trashracks

Tuggerah Lakes on the Central Coast have been the focal point for funding by federal, state and local government due to their significant environmental value.  The central coast community is also very zealous about the lakes and coastal environment.    […]

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2018 – 2019 Veolia Banksmeadow Waste Transfer Terminal (BTT) Audit, Design and Construction

Veolia Waste and Environmental Services operate under a strict EPA license requiring stormwater contaminated with leachate from operations to meet high standards prior to discharge. Modification of an existing stormwater detention basin was identified as an opportunity to more consistently […]

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2018 Inner West Council Blackmore Oval Wetland Renovation

Inner West Council identified a redundant RMS sediment basin as an opportunity to repurpose into a community and environmental asset.  Integrating sustainable water practice and environmental engineering Optimal Stormwater delivered a comprehensive redesign and construction project for IWC.  Featuring integrated […]

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Sutherland Shire Council – Creek and Drainage works, Towra Point Nature Reserve

Optimal Stormwater undertook the design and construction of the creek and drainage works at Towra Point Nature Reserve including the rehabilitation and re-vegetation of an overland flow drainage channel and a new pit to manage flooding and erosion. We used […]

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Hornsby Shire Council – Design and Construct CDS P1518 Unit 1/4 GPT Projects

Optimal Stormwater was selected by Hornsby Shire Council to design and construct a new stormwater treatment solution upstream of a bioretention basin in Lyne Road Reserve, Cheltenham. Council identified that the existing, underperforming bioretention basin downstream was underperforming due to […]

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Hornsby Shire Council – Design and Construct CDS P1518 Unit with DD Sump 2/4 GPT Projects

Optimal Stormwater was selected by Hornsby Shire Council to design and construct a new stormwater treatment solution upstream of an ecologically sensitive creek within Neal Reserve, Sherbrook Road, Hornsby. The existing basket-type GPT was well undersized and causing upstream flooding […]

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Hornsby Shire Council – Design and Construct Vortcapture VC60 unit 3/4 GPT Projects

Optimal Stormwater was selected by Hornsby Shire Council to design and construct a new stormwater treatment solution upstream of a sensitive waterway in an industrial park on Salisbury Road, Hornsby Heights. Due to the relatively small catchment, extreme depth and […]

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Hornsby Shire Council – Design and Construct CDS P1009 Unit 4/4 GPT Projects

Optimal Stormwater was selected by Hornsby Shire Council to design and construct a new stormwater treatment solution upstream of an ecologically sensitive creek at Pike Road, Hornsby Heights. The existing Humegard GPT was severely underperforming, and Optimal Stormwater was able […]

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Lane Cove Council – Design and Construct VortCapture GPT

Optimal Stormwater was selected by Lane Cove to design and construct a GPT at Bent Lane, Greenwich. The site was earmarked for a GPT to help improve downstream water quality and flooding alleviation. The design was given to us as […]

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Design and Construction of a 45m Graduated Trash Rack for Ryde City Council, at Porters Creek, Macquarie Park

Another consultant had proposed a Baramy trap or equivalent, and Optimal Stormwater tendered for their own design, and won the project with a superior design, and lower overall costs. The trash rack is one of the longest in Sydney, and […]

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Waterloo Oval – Stormwater Harvesting for City of Sydney

Optimal Stormwater was selected for the construction of a stormwater harvesting solution in Waterloo at Waterloo Oval for the City of Sydney. The project involved a drop offtake from the City of Sydney’s 600mm stormwater drain, with gravity feed into […]

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Hornsby Council, Design & Construct 3 Stormwater harvesting schemes, NSW

Optimal Stormwater was engaged to provide $1.2M worth of stormwater harvesting works in Sydney. Optimal Stormwater was selected because of our depth of understanding in regards to the water balance and limitations with the concept put forward. The proposed (and […]

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SQID, Design and Construction at Pearl Bay Ave, Mosman

Another consultant had done a very detailed design, but when it went to tender, all bids were massively above Council’s budget. However, Optimal Stormwater put in an alternative tender with some very cost effective options, that really appealed to Council, […]

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Sutherland Shire Council Cronulla Beach Vertical Pipe Replacement

Optimal Stormwater undertook challenging stormwater rectification works at the rear of Ozone Street, Cronulla which involved the design and construction of a 14m pipe, 10m of which was vertical down the cliff face to an existing ocean outlet. Optimal Stormwater […]

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GPT Installation for two CDS units at De Freitas Wetland, Fairfield

Due to our extensive experience, Optimal Stormwater was selected to install two CDS units for Enviropacific, as part of a much larger wetland upgrading project for Fairfield Council. The smaller southern unit was deeper, but went in easily. It was […]

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Pirrama Park, Alexandra Oval, Waterloo Oval, Stormwater Harvesting Design for City of Sydney

At Pirrama Park, an extension of the existing storage was designed. This was a 200kL Humes Rainvault storage system. We also designed access points, rising mains, plus additional communication lines. At Alexandria Oval, we did a complete redesign of the […]

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Ku-Ring-Gai Council – Cliff Oval Stormwater Harvesting Scheme

Staff from Optimal Stormwater undertook the detailed design for the Cliff Oval Stormwater Harvesting Scheme in Wahroonga. They also assisted in the construction works with Austexc to install the solution. The project aims to irrigate two ovals from water harvested […]

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Boorandara Council – Freeway Golf Course Stormwater Harvesting

  Optimal Stormwater was engaged to do the water balances and investigate 4 options regarding the feasibility for water reuse at the Golf Course. The four options included sewer mining, extraction from the Yarra under an existing licence and two […]

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Cronulla Park Stormwater Harvesting and Reuse Scheme, Sutherland Shire Council

The Optimal Stormwater staff that also work with Henry & Hymas were awarded the design of a stormwater harvesting reuse scheme at Cronulla Park. The design included primary, secondary and tertiary treatment to achieve the desired outcome of irrigation without […]

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Stormwater Harvesting Tank for Ku ring gai Council

Optimal Stormwater won the design and construction of a reasonably small harvesting system for the Kogarah Council depot at Carlton. A previous (unsuccessful) harvesting system was in place on a Sydney Water channel nearby, and Optimal Stormwater was selected to […]

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Stormwater Harvesting at Myimbarr Wetlands with Shellharbour City Council

Optimal Stormwater was firstly engaged to do a peer review of another consultant’s design when costs blew out. As a consequence of the recommendations, Optimal was engaged to do a redesign of the project. The solution was innovative and involved […]

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Alexandria Oval – Stormwater Harvesting for City of Sydney

Optimal Stormwater was selected for the construction of a stormwater harvesting solution in Alexandria at Alexandria Oval for the City of Sydney. The project involved a drop offtake from a Sydney Water covered stormwater culvert, with gravity feed into an […]

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Artarmon Reserve – Stormwater Harvesting for Willoughby City Council

Optimal Stormwater was selected for the design of a stormwater harvesting solution in Artarmon Reserve for Willoughby City Council. The project had a years’ worth of flow and water quality monitoring which Council provided. Optimal Stormwater provided an innovative design […]

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