(1) The commission, in fixing and altering collection rates charged by every solid waste collection company under this section, shall include in the base for the collection rates:

(a) All charges for the disposal of solid waste at the facility or facilities designated by a local jurisdiction under a local comprehensive solid waste management plan or ordinance; and

(b) All known and measurable costs related to implementation of the approved county or city comprehensive solid waste management plan.

(2) If a solid waste collection company files a tariff to recover the costs specified under this section, and the commission suspends the tariff, the portion of the tariff covering costs specified in this section shall be placed in effect by the commission at the request of the company on an interim basis as of the originally filed effective date, subject to refund, pending the commission's final order. The commission may adopt rules to implement this section.

(3) This section applies to a solid waste collection company that has an affiliated interest under chapter 81.16 RCW with a facility, if the total cost of disposal, including waste transfer, transport, and disposal charges, at the facility is equal to or lower than any other reasonable and currently available option.