The Stream Diversion and the Landfill

Date: 3 December 2024: Australia/NZ  
Time: 9:00 AM Australian Eastern Daylight Time

Date: 2 December 2024: USA
Time: 3:00 PM Mountain Time

Presented by: Stephanie Kirk, CPESC, CESSWI
Level: Intermediate
Duration: 1 hour
Type of Course: Webinar - Live

On the Takitimu North Link Project there is a complex set of stream diversion and culvert installation works being undertaken which have provided numerous erosion and sediment control challenges. A new stream channel is being diverted adjacent to an existing closed out landfill. However, it was discovered that there was a large volume of rubbish outside the footprint of the leachate line which turned a straight forward stream diversion into a complex contaminated land remediation exercise whilst working beneath the water table and within large volumes of leachate runoff. Along with removal of the contaminated land, the new section of stream channel has been designed with a special liner to prevent leachate entering the waterway from the landfill. It has been a tricky, technical and rewarding erosion and sediment control and contaminated land crossover. This presentation seeks to highlight how often, there are crossovers between erosion sediment control and other technical disciplines and how to manage this.