TransCanada is seeking approval from Nebraska for the approval of $8bn Keystone XL pipeline route through the state.
Recently, US President Donald Trump has given nod to construct the pipeline, reversing the former President Barack Obama's decision, who had rejected the project over environmental issues.
TransCanada’s earlier attempts to build the pipeline in Nebraska were opposed by activists and some landowners over the concerns of damaging property and contaminating groundwater supplies.
Keystone XL pipeline is being developed to transport heavy crude oil to Gulf Coast refineries.
Through travelling six states, the pipeline will carry about 700,000 barrels of crude per day to refineries on the US Gulf of Mexico coast from oil sands of Alberta
The proposed route, which has been assessed by the Nebraska Department of Environmental Quality, secured approval from Nebraska governor in 2013.
The preferred route will not pass through the Nebraska Sandhills, and is expected to result in minimal environmental impacts in the state.
In addition, the review is comprised of active consultation with landowners on the pipeline corridor. Around 90% of land owners have signed voluntary easements to build the pipeline.
Expected to conclude in this year, the PSC process is claimed to be the clearest path to achieve route certainty for the project in Nebraska.
TransCanada president and CEO Russ Girling said: "The thousands of Nebraskans we have met over the last eight years understand the value of this project and what it means to the state.
“As we have said consistently, safety and a respect for the environment remain our key priorities. We are listening and acting on what we have learned."