Zoning Districts | Technical Terms and Land Use Definitions
b. An appliance for the cooking or heating of food; and
i. Those areas delineated by the U.S. Department of Agriculture’s Natural Resources Conservation Service as having a “severe” limitation for building site development; ii. Areas designated as quaternary slumps, earthflows, mudflows, or landslides on maps published by the U.S. Geological Survey or Department of Natural Resources; b. Areas that have shown movement during the Holocene epoch, from 10,000 years ago to the present, or which are underlain by mass wastage debris from that epoch;
c. A sink.
189. Lake management plan. The plan (and supporting documents as appropriate) describing the lake management recommendations and requirements. 190. Lakes. An open body of surface water, not including streams or rivers, that is 20 acres or greater in total area. 191. Landfill. A disposal site or part of a site at which refuse is deposited. 192. Landscape water features. A pond, pool or fountain used as a decorative component of a development. 193. Landscaping. Live vegetative materials required for a development. Said materials provided along the boundaries of a development site are referred to as perimeter landscaping. 194. Landslide. Episodic downslope movement of a mass including, but not limited to, soil, rock or snow. 195. Landslide hazard areas. Those areas in the City of Sammamish potentially subject to risk of mass movement due to a combination of geologic, topographic, and hydrologic factors. These areas are typically susceptible to landslides because of a combination of factors including: bedrock, soil, slope gradient, slope aspect, geologic structure, groundwater, or other factors. Landslide hazard areas include the following:
c. Any area with all three of the following characteristics:
i. Slopes steeper than 15 percent; and
ii. Hillsides intersecting geologic contacts with a relatively permeable sediment overlying a relatively impermeable sediment or bedrock; and
iii. Springs or groundwater seepage;
d. Areas with a slope of 40 percent or steeper and with a vertical relief of 10 or more feet except areas composed of consolidated rock. A slope is delineated by establishing its toe and top, as defined in SDC 21.04.040B.346., and measured by averaging the inclination over at least 10 feet of vertical relief; e. Slopes that are parallel or subparallel to planes of weakness (such as bedding planes, joint systems, and fault planes) in subsurface materials;
a. Areas of historic failures, such as:
236 | Title 21: Sammamish Development Code
Effective | January 1, 2022
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