The district may make contracts and enter into stipulations of any nature whatsoever, either in connection with eminent domain proceedings or otherwise, including, but not limited to, contracts and stipulations to indemnify and hold harmless, to employ labor, and to perform all acts necessary and convenient for the full exercise of the powers granted in this part.

The district may contract with any department or agency of the United States, with any public agency, including, but not limited to, the Department of Transportation, any county, city, or district, or with any person or a private entity upon the terms and conditions that the district finds in its best interest for the procurement of engineering, project management, and contract management services.