(B) Whenever sanitary or drainage facilities or prevention or replacement facilities have been acquired or constructed by, and at the expense of, a person, political subdivision, unincorporated area, or public agency and the board considers it appropriate to acquire the facilities or any part of them for the purpose of providing sewerage or drainage service to territory within a sewer district, the county sanitary engineer, at the direction of the board, shall examine the facilities. If the county sanitary engineer finds the facilities properly designed and constructed, the county sanitary engineer shall certify that fact to the board. The board may determine to purchase the facilities or any part of them at a cost that, after consultation with the county sanitary engineer, it finds to be reasonable. Subject to and in accordance with this division and division (B) or divisions (C), (D), and (E) of section 6117.06 of the Revised Code, the board may purchase the facilities or any part of them by negotiation. For the purpose of paying the cost of their acquisition, the board may issue or incur public obligations and assess the entire cost, or a lesser designated part of the cost, of their acquisition against the benefited properties in the manner provided in this chapter for the construction of original or comparable facilities.