Petitioners must sustain the burden of proof under the clearly erroneous standard. We find that petitioners have sustained their burden of proof in showing that, as to components 3 and 4, Thurston County has not complied with the Act in allowing a 4-inch sewer to be extended into rural areas. The statue provides that extension is prohibited except where shown to be necessary to protect basic public health and safety and the environment. Those facts are not shown in this record. Both options for rebuilding the Tamoshan plant included connection to Beverly Beach and abandonment of that plant.
All options are supportable at rural densities.
The Legislature has recognized that intrusion or extension of urban services to rural areas inevitably creates pressure to urbanize. That is the reason that the strict necessary to protect test was adopted rather than a betterment of health or environment standard. In order to comply Thurston County must within 120 days of this order, remove authorization to extend sewer into Cooper Point. The CP amendment authorized extension of a LOTT 4-inch sewer line to portions of the Cooper Point peninsula. The LOTT authorizing resolution prohibits connection for new development.