BUENA — The Washington Department of Ecology is proposing a cleanup plan for petroleum contamination in soil and groundwater at a former market and gas station in Buena. The agency is seeking public comment on the plan.

The site is the old Gold Nugget Market at 1041 Buena Road, where contamination was discovered in the early 1990s by workers installing new sewer lines. The contamination is likely the result of leaking gasoline storage tanks at the market.

The proposed cleanup involves excavating and removing some contaminated soil and installing a system to inject oxygen into the ground to degrade petroleum in groundwater.

Mary Monahan, Ecology’s site manager for the project, said public comment will be accepted through March 8.

She said the remediation work is expected to be conducted this spring. A contractor will be selected to perform the work under a bid process. Cost of the project will be paid for through the state Model Toxic Control Account, which is funded by a tax on sale of hazardous substances like petroleum and pesticides.

Written comments can be submitted to Ecology’s Toxics Cleanup Program, 15 W. Yakima Ave., Suite 200, Yakima, WA 98902-3452, or by email at mary.monahan@ecy.wa.gov.