A committee will now review Conta's economic offer.
The 186km pipeline would supply a growing soy, livestock and orange industry in the province's east.
The eight-inch diameter pipeline would run from the Lumbreras gas compression plant to Juramento river and then branch off to the north and south.
The pipeline could be completed before next year's southern hemisphere winter, the statement said.
Conta would initially finance 100% of the works and the province would return the investment over the course of either 24, 60 or 84 months after the project's completion.
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