Our team offers a full range of engineering services including hydraulic and engineering reports, planning, flood modelling, due diligence, earthworks, roads, civil and stormwater design and construction documentation. Stormwater harvesting design and documentation draws on our process, automation and mechanical engineering capabilities and integrated design delivered.
Our consulting is complimented by close association with suppliers who have proven to themselves in the industry. We have all the proprietary GPT operation and maintenance manuals, and can upgrade and update them specifically for your local government area.
Optimal Stormwater were engaged by Ku-ring-gai Council to undertake the design of a GPT and creek stabilization. A GPT has been carefully selected based on the catchment features, target pollutants, hydraulic impacts and cost assessments. The proposed site is located […]
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Optimal Stormwater were engaged by Willoughby Council to undertake the design and construction of creek restoration, rock infiltration dam, a GPT and stormwater harvesting pumpwell at Warners Park, Northbridge. Optimal Stormwater designed and documented the works, including design of a […]
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In 2020 Optimal Stormwater was commissioned by Mosman Municipal Council to design improvements to the watercourse discharging to popular Balmoral Beach. The watercourse was subject to severe erosion and sediment deposition as a consequence of urban stormwater flows. The headwall […]
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In 2019 Optimal Stormwater won the tender to design and construct two GPTs for Gwawley Bay catchment. One was a CDS P2018 Unit at Kareena Road, Miranda and the other a CDS P3024 Unit at the Five Ways intersection. The […]
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In 2020 Optimal Stormwater won the tender to design and construct three (3) GPTs for Dubbo Regional Council. Total tender value for design and construction of the three GPTs – just over $1.1M. The third site was at Paringa Place, […]
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In 2020 Optimal Stormwater won the tender to design eleven Gross Pollutant Traps (GPTs) at various priority locations in Liverpool LGA. The Scope of Work involves site selection, investigation into a range of different GPTs to choose the most appropriate […]
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In 2020 Optimal Stormwater won the tender to design and construct three (3) GPTs for Dubbo Regional Council. Total tender value for design and construction of the three GPTs – just over $1.1M. The second site was at Devils Hole […]
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In 2018 Optimal Stormwater won the tender to design three GPTs in Manly, which Northern Beaches Council expanded to seven devices in total including reconstruction of the Manly Beach stormwater outfall at North Steyne. The Scope of Work involved investigation […]
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In February 2020 Optimal Stormwater won the tender to design and construct a CDS Unit P2018 for Stringybark Reserve. As an alternative, Council was given the opportunity to design and construct an equivalent SPEL Vortceptor, also a high performance vortex […]
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In 2020 Optimal Stormwater won the tender to design and construct three (3) GPTs for Dubbo Regional Council. The most important site is located on Whylandra Street, West Dubbo with a 300 hectare catchment on twin 1800mm pipes discharging to […]
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In 2019 Optimal Stormwater won the detailed design of six Gross Pollutant Traps at various locations around North Sydney LGA. Optimal subsequently won the construction of a CDS 2018 at Hayes St, the first of six Gross Pollutant Trap. The […]
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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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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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North Sydney Council are forging ahead with plans to provide gross pollution treatment for over 80% of their LGA. Optimal Stormwater where initially engaged to investigate and prepare concept designs for the upgrade of several of councils basic ‘litter basket’ […]
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Fairfield Council have been at the forefront of stormwater best practice for decades and early adopters of gross pollution traps. Council highly values their waterways and creek systems and protection of these is a high priority and for Council. A […]
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Council Depots and Waste Depots are on the radar for many Councils to address stormwater management. Industrial activities, waste management, plant maintenance and storage of construction generate high quantities of sediments, waste and debris and dust. Optimal conducted a comprehensive […]
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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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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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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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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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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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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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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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Optimal Stormwater was selected for the design of a stormwater harvesting solution in Wonthaggi Recreational Reserve for Bass Coast Shire Council. The project involved catchment analysis, water use analysis, MUSIC modelling, water balances, primary, secondary and tertiary treatment, purpose designed […]
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Optimal Stormwater was selected for the design of a stormwater harvesting solution in Santa Rosa Park for Ryde City Council. The project involved Optimal Stormwater analysing the available base and peak flow at the particular location, the capacity to deliver […]
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