The company will open its unmanned site on State Highway 1 at Maheno on October 2, after delays during the early stage of the construction process pushed back the opening date from August to late September and then again to early next month.
Initial work involved concrete-laying, improvements to drainage on an extended forecourt area and the installation of an above-ground, 50,000-litre tank to complement the three smaller tanks already on site.
Gull NZ general manager Dave Bodger said the majority of that work had been completed.
"As part of our planning process we found we had to rejig the whole drainage area in the forecourt that actually wasn't strictly complying with regulations and regulations have changed over time. We could have ploughed on ... but we didn't feel good about that, so we've had to do a fair amount of re-concreting on the forecourt and geotechnical work on installing the new tank, so that wasn't expected."
Fuel dispensers would be installed, tested and calibrated, and technology to allow payment for fuel and signage were also scheduled to be installed soon.
