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Manufacturer of custom horizontal directional drills, equipment, tooling and solutions.
Manufacturer of custom horizontal directional drills, equipment, tooling and solutions.
Horizontal Directional Drilling Project Pond 7 at Tauranga New Zealand

Project Pond 7 at Tauranga New Zealand

An increased demand for residential development and a new school in Tauriko, Tauranga New Zealand, meant that a large stormwater retention pond and discharge pipeline needed to be built. Despite the seemingly straightforward task of building a small pond, constructing a pipe to carry water, to control water levels, and to ensure an adequate water flow was much more complicated. Early contractor involvement helped the designer to suggest a directional drilled pipeline as the best solution, setting the project up for success.

To mitigate risk of tunnel stability and maintain a favorable subgrade, the alignment remained deep with minimal grade for most of the line before turning up steeply to intersect the pond. The 900mm diameter HDPE pipe required a 1m diameter tunnel and at 300m long, a large volume of soil was removed. This innovative installation was made environmentally friendly by recycling the tunnel fluid and re-using it to reduce groundwater contamination through dewatering and disposal.

The job site itself was particularly difficult due to the working conditions, but Universal Underground managed to complete the project.

HDD Project Pond 7 Tauriko Tauranga New Zealand

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