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Cashmere Valley Dam Design, Consenting and Construction Supervision/Contract Management
Details
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Tender Closed
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| RFx ID : | 20223061 |
| Tender Name : | Cashmere Valley Dam Design, Consenting and Construction Supervision/Contract Management |
| Reference # : |
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| Open Date : | Monday, 29 October 2018 4:00 PM (Pacific/Auckland UTC+13:00) |
| Close Date : | Friday, 23 November 2018 1:00 PM (Pacific/Auckland UTC+13:00) |
| Tender Type : | Request for Quotations (RFQ) |
| Tender Coverage : | Sole Agency [?] |
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| Regions: | N/A |
| Exemption Reason : | None |
| Required Pre-qualifications : | None |
| Contact : |
Abigail Mather Abigail.Mather@ccc.govt.nz |
| Alternate Physical Delivery Address : | |
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This work package is part of the Upper Heathcote Storage Scheme which Council have approved to provide flood storage benefits and reduce flood risk downstream on the Heathcote River corridor back to pre-earthquake levels as soon as possible.
Cashmere-Worsleys Valley has been identified as a favourable location to provide flood storage over a number of years due to its natural tendency to retain water and restricted outlet. The original concept was to raise the level of Worsleys Road and install control structures on the Cashmere Valley Drain and Worsleys Drain in order to dam the valley and increase the potential storage available. Due to the potential risk to homes in close proximity downstream of Worsleys Road an alternative scheme has been adopted.
This alternative ‘cascade’ option provides for storage in the lower part of the valley maintaining Worsleys Road at the existing height and installing a control structure in Cashmere Valley Drain. This is to be complemented by a higher dam in the upper part of the Cashmere Valley with excavation behind the dam to maximise storage capacity upstream.
A subdivision is currently being constructed around the edges of the valley with Stage 1 to the south side of Shalamar Drive well underway. This has involved significant excavation within the lower part of the valley to provide compensatory storage and fill for the subdivision, and construction of first flush basins and wetland swales to treat stormwater run off from the new development and also existing development from the hills catchment to the north east.
The Cashmere Valley Dam will complement the storage provided in the lower valley and is expected to operate in conjunction with controls in the lower valley.
Purpose of this Statement of Work
Council wish to procure a consultant to deliver the following to enable full valley storage to be achieved:
1. Concept review and preliminary design
2. Apply for Resource Consents
3. Detailed design, Building Consent and construction of the Cashmere Valley Dam including control structure and earthworks.
4. Construction supervision and contract management
This tender has been awarded to:
- Stantec New Zealand (Dale Maung)
Award Date: Thursday, 10 January 2019 (Pacific/Auckland UTC+13:00)
Date RFx was completed/updated: Monday, 24 December 2018 5:30 AM (Pacific/Auckland UTC+13:00)
