Otane Wastewater Treatment Plant Upgrade
Council have approved to re-purpose the treatment plant upgrade funding towards Stage 1 of the pipeline from Otane to Waipawa. We expect to complete approx. 3.5km worth of this 8.5km pipeline.
Works are expecting start in Feb/ Mar 2020. The remaining works will be carried out following the decision and direction of the greater wastewater project as laid out in LTP 2021.
The design progresses well for this pipeline route, and is expected to be completed by early October 2019.
In conjunction with this design, a due diligence process is being undertaken to confirm the feasibility of a conveyance pipeline to Waipawa rather against a full treatment plant upgrade to future proof Otane.
Following confirmation, this pipeline is planned to be undertaken in 3 stages;
1. 3200m of wastewater pipeline that runs parallel/ alongside with the new water pipeline (from January 2020 -> December 2020)
2. Resource consent amendment or new
2. The remaining pipeline to Waipawa WWTP, and pump station to deliver wastewater to Waipawa (from July 2021->)
Update - 25 July 2019
Following the inclusion of this plant in the wider wastewater scheme for Central Hawke's Bay.
Council is currently investigating a pipeline from Otane to Waipawa, to initially join the Waipawa discharge once treated at Otane, and eventually to be treated at Waipawa.
Following successfully determining that this is the best option, council is planning to progress parts of this project with the Otane Alternate water supply to gain efficiencies and savings that can be made here.
A copy of the updated resource consent can be found here: http://data.hbrc.govt.nz/consentdocuments/DP150206L.pdf
Significant work is underway regarding the future of the Otane wastewater plant via the wider Waipawa and Waipukurau wastewater upgrade project.
Council expects to be in a position to provide further updates mid 2019 as we prepare to present our env court response by end of June 2019.
Council is pleased to advise, on the 5th March 2019, Council received a 2 year extension to implement the discharge resource consent for the Otane wastewater treatment plant, this now allows council the opportunity to continue to investigate the inclusion of the Otane wastewater upgrades with the Waipawa and Waipukurau systems. This now allows Council until 31 March 2021 to implement the improvements to meet the new resource consent requirements.
This piece of work is well underway, and council is working with our community reference group to determine the best solution for these plants.
Council plans to be in a position in June 2019 to better understand the solution that will be progressed through to design and consenting.
Additionally, council will shortly be commencing an Infiltration and Inflow study in Otane to better understand the amount of stormwater currently getting into the wastewater networks. You can follow this piece of work at the following webpage : https://www.chbdc.govt.nz/our-district/projects/infiltration-and-ingress-reduction/
Council submitted its extension application to Hawkes Bay Regional Council (HBRC) on Friday 2nd November 2018. This is following consultation with neighbours and original application submitters.
Following a supportive and positive response from those affected, council will work on reviewing options for Otane amongst the Waipukurau and Waipawa wastewater treatment plant project.
Council is also working on securing a contractor to undertake an infiltration and inflow (I&I) study in Otane, with a view to reduce the I&I in the Otane network and subsequently the volume the oxidation pond and future plants have to treat.
Infiltration is the seepage of ground water into the sewer system through defects in sewer piping or into loose sewer connections. Inflow is water or sewage draining directly into the sewer line through a sewer connection.
Further updates will be provided as this project progresses.
Central Hawke’s Bay District Council (CHBDC) are currently working through a project to upgrade the wastewater treatment plant in Otane, this involves upgrading the amount of waste the plant can treat and the quality of the water discharged. This is in line with a newly issued resource consent that requires upgrade of our plant to meet requirements.
We are currently reviewing our options before making a decision, and plan to involve the community in these decisions.
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