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Kittitas County, WA $ 17A.02.680 CRITICALAREAS 5 t'7A.02.720 $ 17A.02.680. Setback. "Setback" means the distance a building or structure is placed from a specified limit such as a lot line or a critical area buffer. (Ord..2021-016,2021) S 17A.02.690. Shorelines of the state. "Shorelines" means all of the water areas of the state, including reservoirs, and their associated shorelands, together with the lands underlying them; except (i) shorelines of statewide significance; (ii) shorelines on segments of streams upstream of a point where the mean annual flow is twenty cubic feet per second (20 cfs) or less and the wetlands associated with such upstream segments; and (iii) shorelines on lakes less than twenty (20) acres in size and wetlands associated with such small lakes. (Ord.202l-016,2021) S 17A.02.700. Shorelines of statewide significance. "Shorelines of statewide significance" means the shorelines identified in RCW 90.58.030 which because of their elevated status require the optimum implementation of the Shoreline Management Act's policies. This includes all rivers with a mean annual flow of greater than two hundred cubic feet per second (200 cfs) and lakes with surface areas of one thousand (1,000) acres or more. (Ord.202l-016,2021) $ 174.02.710. Shrub-steppe. "Shrub-steppe" is a nonforested vegetation type consisting ofone or more layers ofperennial bunchgrasses and a conspicuous but discontinuous layer of shrubs (see Eastside Steppe for sites with little or no shrub cover). Although Big Sagebrush (Artemisia tridentata) is the most widespread shrub-steppe shrub, other dominant (or co-dominant) shrubs include Antelope Bitterbrush (Purshia tridentata), Threetip Sagebrush (A. tripartita), Scabland Sagebrush (A. rigida), and Dwarf Sagebrush (A. arbuscula). Dominant bunchgrasses include (but are not limited to) Idaho fescue (Festuca idahoensis), Bluebunch Wheatgrass (Pseudoroegneria spicata), Sandberg Bluegrass (Poa secunda), Thurber's Needlegrass (Achnatherum thurberianum), and Needle-and-Thread (Hesperostipa comata). In areas with greater precipitation or on soils with higher moisture-holding capacity, shrub-steppe can also support a dense layer of forbs (i.e., broadleafherbaceous flora). Shrub-steppe contains various habitat features, including diverse topography, riparian areas, and canyons. Another important component is habitat quality (i.e., degree to which atract resembles a site potential natural community), which may be influenced by soil condition and erosion; and the distribution, coverage, and vigor of native shrubs, forbs, and grasses. Sites with less disturbed soils often have a layer of algae, mosses, or lichens. At some more disturbed sites, non-natives such as Cheatgrass (Bromus tectorum) or Crested Wheatgrass (Agropyron cristatum) may be co-dominant species. Fire disturbance is an ecological component of shrub-steppe. Shrub-steppe disturbed by fire may lack the aforementioned habitat components during periods of post-fire recovery' (Ord.2021-016,2021) $ 17A.02.712. Significant Adverse Impact. "significant Adverse Impact" means a reasonable likelihood of more than moderate adverse impact on environmental quality. $ 17A.02.715. Site Potential Tree Height (SPTH). "Site potential tree height" or "SPTH" is the average maximum height of the tallest dominant trees (200 years or more in age) for a given area. (Ord. 2021-016,2021) Downloaded from https://ecode360.com/Kl6857 on 2025-05-15