For more than 10 years, GBI has been involved with 19 different expansion projects for the Waimanalo Gulch landfill. We stay abreast of the many regulatory and environmental issues or changes that occur over the course of time and work diligently with our client to implement them.
Our initial projects with the landfill involved expansion. GBI excavated over one million cubic yards of rock and installed a proper drainage system. More recent projects involved adding liner support. In both cases, GBI assisted Waste Management by providing state-of-the art equipment and GPS services.
As with all landfills, topography continuously changes. Throughout the duration of the contract, the existing surface of the landfill shifted and redesigns were necessary to account for these changes and provide positive drainage.
One of the main challenges working in a landfill is continuously running a dozer up and down 1:1 slopes. Work needs to be sequenced so there is enough dirt to cover the liner so the equipment doesn’t damage it during backfill.