The selectboard shall have the same powers in the taking of land for the construction of such sewer, in the assessment of damages therefor, in the assessment for benefits conferred and in all proceedings necessary for carrying out the provisions of this section and sections 3413 and 3414 of this title, as are conferred upon the selectboard by this chapter. The same right of appeal is hereby given to persons dissatisfied with the decision of the selectboard upon the question of the public necessity for taking land, the assessment of damages therefor, or the assessment of contribution for the construction of such sewer, as is given to such persons by this chapter.