Golden Gate Capital, an American private equity firm, agreed to acquire Waterfield Midstream, a provider of midstream infrastructure solutions in the Permian Basin. Financial terms were not disclosed. “We have an outstanding relationship with Jay and the highly-respected Stonehill team, and are delighted to work with them again. Jay and his team have a tremendous track record of building water infrastructure solutions for the oil and gas industry, and with Waterfield Midstream as Stonehill’s flagship investment, we look forward to helping develop this environmentally-minded platform to meet E&P companies’ evolving needs," Dave Thomas, Golden Gate Capital Managing Director.