MINNEAPOLIS — The Army Corp of Engineers has granted a waiver allowing a Benson petroleum company to move forward with a project designed to speed up a propane-infrastructure project.

The waiver on behalf of Dooley Petroleum was requested by U.S. Sens. Amy Klobuchar and Al Franken and U.S. Rep. Collin Peterson

It allows the company to advance a project increasing its storage capacity of a 1.5 million-gallon facility by another 1 million gallons. Otherwise Dooley would have had to wait 120 days to complete the permitting process.

The three Minnesota Democrats said they requested the waiver because last winter’s propane shortage increased prices for families and businesses, and put residents’ safety at risk. They said Tuesday the waiver means the project will be operational in time for the upcoming winter.