66 | “It’s renowned for some pretty large downpours, so that provided the odd challenge. But nothing that caused much of an impact.” CIVIL CONTRACTING Tasman Civil Ltd: Ngati Kuia Trust: Native Nursery T T Rosa Watson Plant nursery a unique project for firm The project involved installing a bore pump and pump shed that houses all the water treatment equipment. They also installed large reservoir bladders, built the onsite roading, and constructed swales and drainage works, The development of a native plant nursery in the mountainous terrain east of Nelson offered a unique project for civil construction firm Tasman Civil. The Nelson-based firm was invited to tender for the contract through local industry connections and its strong reputation, general manager Tom Maw said. The $1.2 million contract at Pelorus Bridge in Marlborough included carrying out all earthworks and construction of site infrastructure. The site is 50 minutes from Nelson, which required some team members to camp onsite in the existing accommodation with huts a mess room. The work had elements out of the normal scope of work for the firm, Tom said. “Being a native plant nursery there was a little bit of difference, in terms of greenhouse construction, site layout ... as opposed to what we normally do in infrastructure work.” An added challenge was the sloping terrain of the site. They began with mobilising the site with equipment, access and office. They completed the earthworks for a 7000sqm building pad for the large green houses and office building, and roading construction. “Following the completion of the earthworks we installed all the drainage and water and waste water infrastructure.” The project involved installing a bore pump and pump shed that houses all the water treatment equipment. They also installed large reservoir bladders, built the onsite roading, and constructed swales and drainage works, Tom said. Power and telecom services were also installed. The roading allowed the builder access to the site to install the greenhouses and office. At times there was overlap of contractors on the site which required logistical planning, Tom said “It always is (challenging) but that the nature of these projects where you’ve your builder as well as your contractors.” Daily meetings were held between operators at the site to decide “who gets what bit of the sandpit to play”, Tom said. There was a large volume of water that needed to be dealt with, going in a lot of different directions, he said, “It’s all designed to manage the water and send it off to sumps and drains.” A Total Station surveying machine was able to keep the slope within 5ml accuracy. Machinery required for the work included a machine-controlled box blade mounted on a compact track loader, along with the usual diggers, trucks grader and roller. In all the team spent five months on the site. This a couple of extreme weather events that the location is known for, Tom said. “It’s renowned for some pretty large downpours, so that provided the odd challenge. But nothing that caused much of an impact.” The firm was the first contractor on the site and was the last to leave. “The last thing was sealing the entrance, which was chip seal.” The project had run smoothly with contractors working in well together, although there were some challenges pop up that had to be worked around. “There was a few changes along the way, so there were things that came out of the woodwork. “One thing that did work out on this contract was the collaboration and engagement between designer and client to resolve challenges along the way. So, it was a really good working relationship.” Tasman Civil was established in 2006 by managing director Keith Robertson. Tom joined the company five years ago. “It’s grown to the size that we are now. We’re not the biggest civil construction company, but we don’t try to be the biggest, we just try to do good stuff.” The firm carries out all aspects of civil construction from three waters infrastructure and medium-sized earthworks projects, and can meet whatever contracts the market presented. It has the scope to build concrete structures and has built bridges in the past. One recently completed project was constructing the $7 million Nelson City Council upgrade to the stormwater network in the city CBD. Currently, the firm is completing a pump station for the Nelson Regional Sewerage Business Unit and large retaining structures as part of a slope stability programme of work in the region. • Three Waters Engineering • River & Stream Flow Monitoring • Water Quality Monitoring • Freshwater Management • Resource Consents • Environmental Impact Assessments • Contaminated Site Assessment & Remediation 20 Stafford Drive, PO Box 25, Mapua info@envirolink.co.nz www.envirolink.co.nz Proud to support Ngati Kuia Trust Proud to support Ngati Kuia Trust 03 541 0879 o ce@tasmancivil.co.nz Drainage & Water Services Retaining Walls Subdivisions Trenching Structures Erosion Protection www.tasmancivil.co.nz
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