Mangawhai Golf Course treated effluent discharge - Design and Build

Overview Kaipara District Council is seeking registrations of interest for the design and construction of a treated effluent subsurface discharge system at Mangawhai Golf Course, together with provision for future surface irrigation mainline pipework, excluding sprinklers. The project covers the Practice, 12th and 14th Fairways. Purpose The project is intended to relieve pressure on the existing Brown Rd Farm treated effluent discharge system. Scope The proposed tender will comprise three separable portions. Award of Separable Portion 3 is not guaranteed and is subject to resource consent outcomes and budget allowances. The scope includes: Separable Portion 1: Design for all three fairways (Practice, 12th and 14th) and the surface irrigation mainline piping Separable Portion 2: Installation in the Practice Fairway Separable Portion 3: Installation on the 12th and 14th Fairways, including the future surface irrigation mainline piping located in these fairways Metering, monitoring and controls Mechanical and electrical works Commissioning Consent documentation As-built plans Operation and Maintenance Manual Tank, pumps, pump shed and treatment plant interfaces Resource Consent Parameters Approximate discharge area of 3.39 ha Up to 405 m³ per day Maximum of 2,835 m³ per seven days Drip lines at least 350 mm below ground (a variation to 275 mm is being sought) Setbacks of 5 m from boundaries and 100 m from water bodies and bores Contractor Requirements Pre-conditions (pass/fail): At least two design and two installation assignments for treated effluent subsurface drip systems A qualified design lead and an experienced installation supervisor Delivery resources and plant access A SiteWise Green rating (75 or more) or equivalent Contract Terms and Conditions Contract term: commencement February 2027, running through to mid-2027