The boundary line between the State of New Hampshire and the State of Maine, as established and marked in 1927, 1928 and 1929, under the public laws of 1927, chapter 21, shall be perambulated once in 7 years forever and the line marked and bounds renewed whenever necessary. The Governor shall appoint a surveyor from the Department of Transportation who shall, in conjunction with a duly authorized representative of the State of New Hampshire, perambulate the boundary line from Bryant's Rock at East Pond to the Canadian Line.   [PL 1977, c. 696, §194 (REEN).]