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<br />17A.02.760 Structure.
<br />"Structure" means a permanent or temporary edifice or building, or any piece of work artificially built
<br />or composed of parts joined together in some definite manner, whether installed on, above, or below
<br />the surface of the ground or water, except for vessels.
<br />17A.02.770 Unavoidable.
<br />“Unavoidable” means adverse impacts that remain after all appropriate and practicable avoidance
<br />and minimization have been achieved.
<br />17A.02.780 Volcanic Hazard Areas.
<br />Volcanic hazard areas are subject to pyroclastic flows, lava flows, debris avalanche, inundation by
<br />debris flows, mudflows, or related flooding resulting from volcanic activity. There are no active or
<br />dormant volcanoes located within Kittitas County; however, Mount Rainer and Mount St. Helens are
<br />relatively near. Hazards to Kittitas County residents from these volcanoes are limited to ash
<br />deposition.
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<br />17A.02.790 Watercourse.
<br />“Watercourse,” "river" or "stream" means any portion of a stream or river channel, bed, bank, or
<br />bottom waterward of the ordinary high water line of waters of the state. Watercourse also means
<br />areas in which fish may spawn, reside, or pass, and tributary waters with defined bed or banks that
<br />influence the quality of habitat downstream. Watercourse also means waters that flow intermittently
<br />or that fluctuate in level during the year, and the term applies to the entire bed of such waters
<br />whether or not the water is at peak level. A watercourse includes all surface-water-connected
<br />wetlands that provide or maintain habitat that supports fish life. This definition does not include
<br />irrigation ditches, canals, stormwater treatment and conveyance systems, or other entirely artificial
<br />watercourses, except where they exist in a natural watercourse that has been altered by humans..
<br />17A.02.800 Water Quality.
<br />"Water quality" means the physical characteristics of water, including water quantity, hydrological,
<br />physical, chemical, aesthetic, recreation-related, and biological characteristics.
<br />17A.02.810 Water System.
<br />"Water system" means any system providing water intended for, or used for, human consumption,
<br />domestic uses, or commercial businesses. It includes, but is not limited to, the source, purification,
<br />storage, transmission, pumping, irrigation, and distribution facilities.
<br />17A.02.820 Waters of the State.
<br />“Waters of the state” means lakes, rivers, ponds, streams, inland waters, underground waters, and
<br />all other surface watercourses within the jurisdiction of the state of Washington, as classified in WAC
<br />222-16-030.
<br />17A.02.830 Wellhead Protection Area.
<br />“Wellhead protection area” means the portion of a well’s, wellfield’s, or spring’s zone of contribution
<br />within the ten-year time of travel boundary, or boundaries established using alternate criteria
<br />approved by the state Department of Health in those settings where groundwater time of travel is not
<br />a reasonable delineation criteria.
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