CASE STUDY Project Summary Organization: MWH Global Location: New South Wales, Australia Project Objective: • Deliver a water treatment plant using MBR technology with an integrated water cycle. • Reduce potable water consumption for the new greenfield community. • Minimize wastewater discharge to the environment by substituting recycled water for household use and urban irrigation. • Ensure timely delivery and operation to coincide with township development. Products Used: ProjectWise, AECOsim Building Designer, InRoads, Bentley Navigator, PlantWise, and LumenRT MWH Global Water Recycling Plant Design Reduces Water Consumption by 60 Percent Bentley Software Helps Ensure Water Efficiency by Recycling up to 62 Percent of the Township's Wastewater for Non-potable Use Fast Facts • MWH designed Australia's first integrated water cycle to provide potable, recycled, and wastewater services to a new greenfield community development. • Bentley 3D modeling applications facilitated collaborative design and decision making enabling MWH to meet the developer's tight delivery schedule and overcome challenging terrain. • ProjectWise, PlantWise, and Navigator provided MWH with an integrated modeling solution by optimizing information mobility among a multi-site design team, allowing all stakeholders' input during the model review stage. ROI • The water plant design will reduce the community's potable water consumption by 62 percent. • Identifying operational, maintenance, construction, and design issues using 3D modeling enabled MWH to meet an aggressive deadline and minimize risk. Creating a Water-efficient Culture Googong is a pristine site located in New South Wales, less than 20 kilometers southeast of Canberra, Australia's national capital. Googong Township Proprietary Limited (GTPL), a newly formed partnership, is developing the area into a self-contained community comprising schools, parks, shops, businesses, and 6,200 homes for 18,000 residents. Given that severe water restrictions and the construction of expensive desalination plants in recent years have not sufficiently relieved the New South Wales region from the effects of a 10-year drought, GTPL incorporated a water recycling plant into the Googong greenfield development project. Googong retained MWH Global to facilitate the plant design based on its expertise working on some of the world's largest and most significant water and natural resource projects. GTPL wanted a design that used membrane bioreactor technology (MBR) as the foundation for an integrated water cycle with a dedicated water recycling plant that would meet water demand and ensure sustainability by only using the equivalent water needed for 6,500 people. To begin the cycle MWPI had to tap into the main supply line to Canberra for fresh potable water, and feed that water into assigned potable water storage tanks in Googong. That water then would be gravity fed from the tanks to Googong residences for drinking and showering. Wastewater, runoff water from the properties, and rainwater was also needed to be collected and pumped into the water recycling plant to be filtered and disinfected. This water was then sent to the water recycling storage tanks to be gravity fed back to the residences for irrigation, toilet flushing, and household washing. Facing complex challenges from difficult terrain Googong's water recycling plant will meet the water demand of 18,000 residents and ensure sustainability by only using the equivalent water needed for 6,500 people. and tight deadlines, the project team required precision engineering to deliver the project on time and on budget. To overcome these challenges, MWH utilized global resources and implemented an integrated and collaborative design approach using Bentley software. Optimizing Information Mobility Harnessing resources from Sydney, Melbourne, Brisbane, and Pune, India, MWH required collaborative software to seamlessly integrate workflows among the multi-site design teams. "Being a multi-national company, we don't always have the skills we need in our home office. Therefore, we do a lot of drafting in our Pune, India, office. We used ProjectWise® to control the models and drawings," explained MWH head CAD designer Terry Sowden. Implementing an integrated design approach using Bentley Navigator allowed MWH to simultaneously deliver drawings and models with managed version control, and capitalize on the time difference between Australia and India to keep the project moving along the tight schedule. MWPI used 3D modeling from concept through detailed design, including earthwork, roads, structures, piping, and mechanical equipment. Information mobility kept design and construction on schedule. The team used automatic signoff to issue drawings and models, and i-models kept data integrity to the client on site. MWPI used 3D models, via Navigator and i-models, in review meetings and two-day workshops involving all stakeholders early in the design process. This provided MWH with valuable insight on where to locate valves and pumps and how they would operate as part of the plant under various scenarios.

"It's a great pleasure to recognize the outstanding team that delivered the Googong Water Recycling Plant, which was delivered to a high standard and on a tight time frame. The client has voiced appreciation, noting in particular the stakeholder challenges through which the MWH team helped them to navigate." — Marshall Davert President, MWH Global Find out about Bentley at: www.bentley.com Contact Bentley 1-800-BENTLEY (1-800-236-8539) Outside the US +1 610-458-5000 Global Office Listings www.bentley.com/contact With this information, the design team could identify and address operational, maintenance,...