Environment Canterbury

RIV_2600737 Waitarakao Seadown Stopbank and Drainage Channel

The Council is seeking responses to this Request for Proposal from suitably experienced contractors to undertake the
realignment of stopbank and drain infrastructure between a point just upstream of the discharge point into Waitarakao
Washdyke Lagoon, and the northeastern corner of the Timaru District Council (TDC) wastewater treatment ponds. The works
covered by this contract include:
• site establishment,
• deconstruction of existing stormwater pond and creation of new stormwater pond and vegetated swale,
including connection to wetland,
• excavation of a new drain channel and construction of a new stopbank. Retirement of the previous drain and
stopbank system. This will include ecological restoration and habitat creation as well as pond reconstruction,
• creation of an inland flood protection bund and creation of track, including supply and installation of culverts
and the raising of Aorangi Rd, as well as upgrading and raising of private property entrances. Aorangi Rd
culvert (previously installed) to be brought online. Construction of car park including supply and installation of
drainage, fencing and gates,
• Timaru District Council (TDC) scope - creation of stormwater pond system around the #1 drain,
• temporary works,
• and reinstatement works including road resurfacing.
At the time of writing this RFP, the resource consents related to this work are being processed with an expectation they will
be issued prior to the time of contract award. Environment Canterbury will keep potential contractors informed of the resource
consent status. All final and agreed scope of works will need to comply with the final resource consents conditions. This work
is part of a broader flood resilience work programme delivered by Environment Canterbury and co-funded by MBIE-Kānoa via
the Regional Infrastructure Fund (RIF).

Department/Business Unit: Field Services