This chapter is promulgated by the board of natural resources pursuant to the authority granted by RCW 79.01.242 to establish procedures for the department's state land leasing program. The board of natural resources recognizes that in order to obtain a fair market return to the trust, certain of its lands should be retained and managed through leasing. These rules are designed to establish practical leasing procedures and achieve the best possible return to the designated trust beneficiary consistent with any other obligations imposed by law on such lands.