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“Bank stabilization” means an action taken to minimize or avoid the erosion of materials from the banks of rivers and streams.

“Base flood” means a flood having a one percent chance of being equaled or exceeded in any given year, often referred to as the “100-year flood.”

“Base flood elevation” means the water surface elevation of the base flood in relation to the National Geodetic Vertical Datum of 1929.

“Basement” means, for purposes of development proposals in a flood hazard area, any area of a building where the floor subgrade is below ground level on all sides.

“Basin plan” means a plan and all implementing regulations and procedures including, but not limited to, capital projects, public education activities and land use management regulations adopted by ordinance for managing surface and stormwater within the basin.

“Battery charging station” means an electrical component assembly or cluster of component assemblies designed specifically to charge batteries within electric vehicles, which meet or exceed any standards, codes, and regulations set forth by Chapter 19.28 RCW and consistent with rules adopted under RCW 19.27.540.

“Battery exchange station” means a fully automated facility that will enable an electric vehicle with a swappable battery to enter a drive lane and exchange the depleted battery with a fully charged battery through a fully automated process, which meets or exceeds any standards, codes, and regulations set forth by Chapter 19.27 RCW and consistent with rules adopted under RCW 19.27.540.

“Bed and breakfast guesthouse” means a dwelling unit or accessory building within which bedrooms are available for paying guests.

“Belt course” means a molding or projecting course running horizontally along the face of a building. A course may be comprised of stone, tile, brick, or other material.

“Berm” means a linear mound or series of mounds of sand and/or gravel generally paralleling the water at or landward of the line of ordinary high tide. Also, a linear mound used to screen an adjacent site, activity, or operation, such as a parking lot, from transmitting excess noise and glare.

“Best management practice” means a schedule of activities, prohibitions of practices, physical structures, maintenance procedures and other management practices undertaken to reduce pollution or to provide habitat protection or maintenance.

“Billboard” means a sign, including both the supporting structural framework and attached billboard faces, used principally for advertising a business activity, use, product, or service unrelated to the primary use or activity of the property on which the billboard is located, excluding off-premises directional or temporary real estate signs.

“Bioengineering” means the use of vegetation and other natural materials such as soil, wood and rock to stabilize soil, typically against slides and stream flow erosion. When natural materials alone do not possess the needed strength to resist hydraulic and gravitational forces, “bioengineering” may consist of the use of natural materials integrated with human-made fabrics and connecting materials to create a complex matrix that joins with in-place native materials to provide erosion control.

Biologist, Qualified. “Qualified biologist” means a person with training and experience in the scientific discipline, and who is a qualified scientific expert with expertise in streams, wetlands or lakes subject matter in accordance with WAC 365-195-905(4). A qualified professional must have obtained a bachelor of science degree in the biological sciences from an accredited college or university or who has equivalent educational training and professional experience related to the subject of habitat or species. A “qualified professional for wetlands” must be a professional wetland scientist with at least two years of full-time work experience as a wetlands professional, including delineating wetlands using the Federal manual and supplements, preparing wetlands reports, conducting function assessments, and developing and implementing mitigation plans.

“Blank wall” means as described in CMC 18.31.560.

“Bog” means a low-nutrient, acidic wetland with organic soils and characteristic bog plants, as described in Washington State Wetland Rating System for Western Washington: 2014 Update (Washington State Department of Ecology Publication No. 14-06-29, Olympia, WA, October 2014 or as subsequently amended).

“Book, stationery, video and art supply store” means an establishment engaged in the retail sale of books and magazines, stationery, records and tapes, video and art supplies and is classified as a retail trade and service.

“Broadleaf tree” means a tree characterized by leaves that are broad in width and may include both deciduous and evergreen species.

“Buffer” means a designated area contiguous to a steep slope or landslide hazard area intended to protect slope stability, attenuation of surface water flows and landslide hazards, or a designated area contiguous to and intended to protect and be an integral part of an aquatic area or wetland.

“Buffer and transition zone” means an area provided to reduce impacts between two different land uses in the downtown zones. Buffer and transition zones are intended to mitigate undesirable views, noises or glare. They include but are not limited to plant materials, walls, fences and/or significant land area to separate uses.

“Building” means any structure having a roof.

“Building envelope” means area of a lot that delineates the limits of where a building may be placed on the lot.

“Building, hardware and garden materials store” means an establishment engaged in selling lumber and other building materials, feed, or lawn and garden supplies including, but not limited to, uses located in SIC Major Group No. 52 – Building materials, hardware, garden supply, excluding mobile home dealers.

“Building height” means the vertical distance from the average finished grade to the highest point of the coping of a flat roof or to the deck line of a mansard roof or to the average height of the highest gable of a pitch or hip roof as depicted in the first diagram below. The average finished grade shall be determined by first delineating the smallest square or rectangle that can enclose the building and then averaging the elevations taken at the midpoint of each side of the square or rectangle as depicted in the second diagram below; provided, that the measured elevations do not include berms. See CMC 18.30.210 for exceptions to building height limits.

Figure 18.20.012(1). Measuring Building Height

“Bulk gas storage tanks” means a tank from which illuminating, heating, or liquefied gas is distributed by piping directly to individual users.

“Bulk retail” means an establishment offering the sale of bulk goods to the general public, including limited sales to wholesale customers. These establishments offer a variety of lines of merchandise including but not limited to: food, building, hardware and garden materials, dry goods, apparel and accessories, home furnishings, housewares, drugs, auto supplies, hobby, toys, games, photographic, and electronics.

“Business services” means goods and services provided by specialized firms to other firms, including, but not limited to, accounting, billing, design, maintenance, printing, supply and delivery, temporary personnel, etc. (Ord. 08-21 § 4 (Exh. C); Ord. 09-19 § 8; Ord. 06-17 § 5 (Exh. C); Ord. 26-16 § 12; Ord. 05-15; Ord. 08-13 § 3 (Exh. A); Ord. 19-11 § 1 (Exh. 1); Ord. 10-10 § 3 (Exh. C); Ord. 14-05 §§ 2, 3; Ord. 42-02 §§ 2 (21A.06.090, 21A.06.095, 21A.06.097, 21A.06.100, 21A.06.110, 21A.06.115, 21A.06.120, 21A.06.122, 21A.06.125, 21A.06.135, 21A.06.140, 21A.06.145, 21A.06.150, 21A.06.155). Formerly 18.20.077 – 18.20.157)