This paper outlines the investigations, tender, construction and contract supervision for a new wastewater pump station (PS), and associated pipework undertaken on behalf of Wellington Water Limited (Client) for Wellington City Council (Asset Owner).
This paper will describe the overarching strategy, field investigations, modelling, lab testing process, and results of the testing programme. With construction works to commence in 2019 on this flagship project, Watercare can proceed with confidence that the design objectives can be achieved.
Christchurch was one of the earliest cities in NZ to have extensive flow and overflow monitoring throughout their wastewater network, providing both data and insight for planning and operational requirements, was well as alarms, duration and quantity for overflow event reporting.
This paper explores the challenges and issues with applying protective coatings to degraded manholes and sewerage infrastructure and explores the use of advanced, two-component cementitious coatings as an environmentally friendly and cost-efficient solutions providing long term protection from Hydrogen Sulfide (H2S) attack.
The paper describes sediment assessments undertaken in 2017-2018, the assessment methodology and the analytical results with regards to the National Environmental Standards (NES) Regulations and also the Asbestos Regulations (2016).
This Paper details three lining systems available in New Zealand for deteriorated sewers that have also been used to structurally line stormwater drains and culverts with diameters from 150mm to 3,000mm. It includes examples of projects where these technologies were used, the design issues addressed, and the challenges overcome.
The creation of exceptional stormwater outcomes for new urban developments doesn’t just happen. It requires a bit of art, technical innovation, and a whole lot of collaboration to create healthy stormwater management facilities and urban waterways that also are places of amenity.
This paper demonstrates the importance of both the climate variability (IPO) and limited rainfall data availability in estimating the extreme rainfall event statistics. This is critical to accurately predict the flood risk and ensure infrastructure is capable of performing now and into the future.
Local and regional government agencies are responsible for managing more WSUD assets than ever before. However, most are struggling to effectively manage and maintain these assets, many of which are in poor functional condition.
Auckland Transport (AT) is responsible for the management of 7,500 km of roads and associated infrastructure throughout Auckland, including over 92,000 road catchpits. Stormwater runoff contaminants and gross pollutants are being discharged from their road corridors into Auckland’s waterways and harbours.
Increased urbanisation throughout the world has led to an increase in the likelihood of flooding. Therefore, stormwater management has become an important issue. In the context of Auckland, New Zealand, stormwater is managed mainly to prevent nuisance and damage to other properties downstream.