The applicant may be required to execute an instrument, in a
form approved by the Board, transferring to the Town or to an approved
public utility company, without cost, valid unencumbered title to
all sanitary sewers, water mains, and appurtenances thereto, and other
utilities constructed and installed in the subdivision or approved
portion thereof, and conveying to the Town or to an approved public
utility company, without cost and free of all liens and encumbrances,
perpetual rights and easements to construct, inspect, repair, renew,
replace, operate, and forever maintain such sanitary sewers, water
mains and other utilities, with any manholes, conduits, and other
appurtenances, and to do all acts incidental thereto, in, through,
and under the whole of all streets in the subdivision or approved
portion thereof; and if any such sewers or water mains have been constructed
and installed in land not within such streets, then in, through, and
under a strip of land extending 15 feet in width on each side of the
center line where it deems necessary.