The department of revenue shall adopt rules it shall deem necessary to implement RCW
84.34.300 through
84.34.380 which shall include, but not be limited to, procedures to determine the extent to which a portion of the land otherwise exempt may be subject to a special benefit assessment for the actual connection to the domestic water system or sewerage facilities, and further to determine the extent to which all or a portion of such land may be subject to a special benefit assessment for access to the road improvement in relation to its value as farm and agricultural land or timberland as distinguished from its value under more intensive uses. The provision for limited special benefit assessments shall not relieve such land from liability for the amounts provided in RCW
84.34.330 and
84.34.340 when such land is withdrawn or removed from its current use classification as farm and agricultural land or timberland.