Wash. Rev. Code § 79.36.620
Whenever any person, firm, or corporation shall hereafter purchase, lease, or acquire any state lands, or any easement or interest therein, or any timber, stone, mineral, or other natural products thereon, or the manufactured products thereof the purchase, lease, or grant shall be subject to the condition or reservation that such person, firm, or corporation, or their successors in interest, shall, whenever any of the timber, stone, mineral, or other natural products on said lands or the manufactured products thereof are removed, by any logging and/or lumbering railroad, private railroad, skid road, flume, canal, watercourse, or other easement, owned, leased, or operated by such person, firm, or corporation, or their successors in interest, accord to any other person, firm, or corporation, or their successors in interest, having the right to remove any timber, stone, mineral, or other natural products or the manufactured products thereof from any other lands, owned or formerly owned by the state, proper and reasonable facilities and service, including physical connection therewith, for the transportation and moving of such other timber, stone, mineral, and other natural products, and the manufactured products thereof and all necessary machinery, supplies, or materials to be used in transporting, cutting, manufacturing, mining, or quarrying any or all of such products under reasonable rules and upon payment of just and reasonable charges therefor; and that any conveyance, lease, or mortgage of such logging and/or lumbering railroad, private railroad, skid road, flume, canal, watercourse, or other easement, shall be subject to the right of the person, firm, or corporation, or their successors in interest, having the right to remove timber, stone, mineral, or other natural products or the manufactured products thereof from such other state lands, to be accorded such proper and reasonable facilities and service, including physical connection therewith, for the transportation and moving of such other timber, stone, mineral, and other natural products and the manufactured products thereof and all necessary machinery, supplies, or materials to be used in transporting, cutting, manufacturing, mining, or quarrying any or all of such products under reasonable rules and upon payment of just and reasonable charges therefor; and such purchase, lease, or grant from the state shall also be subject to the condition or reservation that whenever any of the timber, stone, mineral, or other natural products on such lands or the manufactured products thereof are about to be removed, by means of any logging and/or lumbering railroad, private railroad, skid road, flume, canal, watercourse, or other easement, not owned, controlled, or operated by the person, firm, or corporation owning or having the right to remove, and about to remove such timber, stone, mineral, or other natural products or the manufactured products thereof shall exact and require from the owners and operators of such logging and/or lumbering railroad, private railroad, skid road, flume, canal, watercourse, or other easement, which shall be binding upon the successors in interest of such owners and operators, an agreement and promise, as a part of the contract for removal, and by virtue of RCW 79.36.590 through 79.36.650 there shall be deemed to be a part of any such express or implied contract for removal, an agreement, and promise that such owners and operators, and their successors in interest, shall accord to any person, firm, or corporation and their successors in interest, having the right to remove any timber, stone, mineral, or other natural products or the manufactured products thereof from any lands, owned, or formerly owned by the state, proper and reasonable facilities and service, including physical connection therewith, for the transportation and moving of such timber, stone, mineral, and other natural products and the manufactured products thereof and all necessary machinery, supplies, or materials to be used in transporting, cutting, manufacturing, mining, or quarrying any or all of such products and under reasonable rules and upon payment of just and reasonable charges therefor.
RCW 79.36.620
Intent-2003 c 334: See note following RCW 79.02.010.