Plans for a refinery in Longview to process Bakken Shale crude oil for regional markets have apparently been abandoned.

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Abundant supplies of Bakken shale crude spurred a proposal to build a Port of Longview refinery that would have processed oil from 10 tanker trains per month.

Riverside Refining last year submitted the plan to build a refinery to produce diesel and other fuel for regional markets, according to documents released by the Port of Longview to Columbia Riverkeeper under a public-records request.

The documents include an unsigned memorandum of understanding between Riverside and the port dated July 2014.

Ashley Helenberg, a spokeswoman for the port, said the memorandum was never executed. She said the documents are “old info” and “at this point there is no project.”

In a statement Wednesday, Louis Sumas, the company’s chief executive, said the company has decided not to pursue the Longview refinery project.

Sumas said the company is considering another unrelated “energy infrastructure project.”

The Port of Longview is one of the sites under consideration.