For the purpose of this title, the following definitions shall apply:
"Action"means any grading, clearing, filling, construction, dredging, removal of trees or use on a piece of property.
"Activity"means any application for the following actions: building permit creating additional habitable space in a residential structure as defined by the International Building Code; building permit for a nonresidential structure; conditional use approval; shoreline permit; rezone; planned residential development; planned mixed-use development; shoreline variance or conditional use; shoreline redesignation; subdivision of land; SEPA review or other similar land use or environmental discretionary review.
"Adaptive management"means using scientific methods to evaluate how well regulatory and nonregulatory actions protect the sensitive area. An adaptive management program is a formal and deliberate scientific approach to taking action and obtaining information in the face of uncertainty. Management policy may be adapted based on a periodic review of new information.
"Agricultural resource lands"means lands that are not already characterized by urban growth and that have long-term significance for the commercial production of food or other agricultural products.
"Anadromous fish"means fish species that spend most of their lifecycle in salt water but return to freshwater to reproduce.
"Animal containment area"means a site where two or more animal units of large animals per acre or 0.75 of an animal unit of small animals per acre are kept, and where a high volume of waste material is deposited in quantities capable of impacting groundwater resources.
"Applicant"means a person, party, firm, corporation, or other legal entity who files an application for approval under this title and who is either the owner of the land on which that proposed activity would be located, a contract vendee, or lessee of the land, the person who would actually control and direct the proposed activity, or the authorized agent of such a person.
"Aquifer recharge area" or "critical aquifer recharge area"means areas that have a critical recharging effect on aquifers used for potable water, including areas where an aquifer that is a source of drinking water is vulnerable to contamination that would affect the potability of the water, or is susceptible to reduced recharge.
Examples of aquifer recharge areas include:
1. Wellhead protection areas delineated pursuant to the Federal Safe Drinking Water Act; and
2. Recharge areas for sole source aquifers designated pursuant to the Federal Safe Drinking Water Act;
3. Areas established for special protection pursuant to a groundwater management program, chapters
90.44,
90.48, and
90.54 RCW, and chapters
173-100 and
173-200 WAC;
4. Other areas meeting the definition of "areas with a critical recharging effect on aquifers used for potable water" in chapter
365-190 WAC.
"Best available science (BAS)"means information from research, inventory, monitoring, surveys, modeling, synthesis, expert opinion, and assessment that is used to designate, protect, or restore sensitive areas. As defined by WAC
365-195-900 through
365-195-925, best available science is derived from a process that includes peer-reviewed literature, standard methods, logical conclusions and reasonable inferences, quantitative analysis, and documented references to produce reliable information.
"Best management practices (BMPs)"means physical, structural, and/or managerial practices, that when used singly or in combination:
1. Control soil loss and reduce water quality degradation caused by high concentrations of nutrients, animal waste, toxics, or sediment;
2. Minimize adverse impacts to surface water and ground water flow and circulation patterns and to the chemical, physical, and biological characteristics of wetlands;
3. Protect trees, vegetation, and soils designated to be retained during and following site construction and use native plant species appropriate to the site for re-vegetation of disturbed areas; and
4. Provide standards for proper use of chemical herbicides within critical areas.
"Building official"means the city staff person responsible for the administration of the International Building Code or his or her designee.
"Clearing"means the removal of vegetative material such as timber, stumps, brush, sod, etc., that does not require reforestation per an approved Forest Practices Application/notification from the Department of Natural Resources.
"Contaminant"means any chemical, physical, biological or radiological substance that does not occur naturally or occurs at concentrations and duration as to be injurious to human health or welfare or shown to be ecologically damaging.
"Critical areas"are those areas established as wetlands, critical aquifer recharge areas (CARAs), frequently flooded areas (special flood hazard areas), landslide hazard areas, erosion hazard areas, seismic hazard areas, volcanic hazard areas, and fish and wildlife habitat conservation areas.
"Director"means the development services director or his or her designee.
"DRASTIC"means a model developed by the National Water Well Association and Environmental Protection Agency used to measure aquifer susceptibility to contamination.
"Existing agricultural properties"are those properties which have not been converted to nonagricultural use or have not lain idle more than five years, unless the idle land is registered in a federal or state soil conservation program.
"Facility"for purposes of aquifer protection regulations means all structures, contiguous land, appurtenances, and other improvements on the land used for recycling, reusing, reclaiming, transferring, storing, treating, disposing of, or otherwise handling a hazardous substance. Use of the term "facility" includes underground and aboveground tanks, and operations which handle, use, dispose of, or store hazardous substances.
"Financial guarantee"means a letter of credit, certified bond, assignment of funds or other instrument acceptable to the city to ensure the satisfactory compliance with conditions or standards of this title.
"Footprint"means the area of a building site bounded by foundation walls or equivalent to the area of the site covered by structures if no foundation walls are present.
"Frequently flooded areas"means lands in the floodplain subject to a one percent or greater chance of flooding in any given year and those lands that provide important flood storage, conveyance, and attenuation functions, as determined by the city in accordance with WAC
365-190-080(3). Classifications of frequently flooded areas include, at a minimum, the one hundred (100) year floodplain designations of the Federal Emergency Management Agency and the National Flood Insurance Program. Also known as special flood hazard areas (see chapter
15.52 SMC).
"Geologically hazardous areas"means areas that because of their susceptibility to erosion, sliding, earthquake, or other geological events, are not suited to the siting of commercial, residential, or industrial development consistent with public health or safety concerns, per WAC
365-190-120.
"Hazardous substance(s)"means any liquid, solid, gas, or sludge, including any materials, substance, product, commodity, or waste, regardless of quantity, that exhibits any of the characteristics or criteria of hazardous waste; and including waste oil and petroleum products.
"Hazardous substance processing or handling"means the use, storage, manufacture, or other land use activity involving hazardous substances, but does not include individually packaged household consumer products or quantities of hazardous substances of less than five gallons in volume per container. Hazardous substances shall not be disposed of on-site unless in compliance with Dangerous Waste Regulations, chapter
173-303 WAC, and any pertinent local ordinances, such as sewer discharge standards.
"Hazardous waste"means and includes all dangerous waste and extremely hazardous waste as designated pursuant to chapter
70.105 RCW, chapter
173-303 WAC.
"Hazardous waste treatment and storage facility"means a facility that treats and stores hazardous waste and is authorized pursuant to chapter
70.105 RCW, chapter
173-303 WAC. It includes all contiguous land and structures used for recycling, reusing, reclaiming, transferring, storing, treating, or disposing of hazardous waste. Treatment includes using physical, chemical, or biological processing of hazardous wastes to make such waste nondangerous or less dangerous and safer for transport, amenable for energy or material resource recovery. Storage includes the holding of waste for a temporary period but not the accumulation of waste on the site of generation as long as the storage complies with applicable state requirements.
"Minerals"includes gravel, sand, and valuable metallic substances. Topsoil is not a mineral.
"Mineral resource lands"means lands primarily devoted to the extraction of minerals or that have known or potential long-term commercial significance for the extraction of minerals.
"Nonexempt activity"means any activity which is not exempted from the development standards of this division.
"One-year time travel zone boundary"means the maximum distance around a pumping well from which a contaminant hypothetically present in groundwater could travel to the well within a one-year time period.
"Riparian management zone"means the regulated buffer area that includes the land from the ordinary high water mark to a specified distance as measured horizontally in each direction.
"Sludge land application site"means a site where stabilized sludge, septage, and other organic wastes are applied to the surface of the land in accordance with established agronomic rates for fertilization or soil conditioning. Sludge land application sites are classified under the following five-category system:
S-1 | Sites of less than one acre with an application rate of less than 10 dry tons of sludge per acre per five-year period. |
S-2 | Sites of less than 40 acres with an application rate of less than 20 dry tons of sludge per acre per 10-year period or less than an annual application of two dry tons of sludge per acre. |
S-3 | Sites with an application rate of more than 20, but less than 43 dry tons of sludge per 10-year period or 4.3 dry tons per acre per year. |
S-4 | Sites with one-time applications greater than 43 dry tons per acre and cumulative limits for metals greater than state-designated practices for agricultural cropland application. |
S-5 | Sites which are permanent landfill disposal facilities. |
"Small animal"means an animal with an average weight of less than 100 pounds.
"TBA"means transferable buffer area. The transferable buffer areas shall not include areas of improved right-of-way within the wildlife habitat area buffer or wetland buffer.
"Ten-year time travel zone boundary"means the maximum distance around a pumping well from which a contaminant hypothetically present in groundwater could travel to the well within a 10-year time period.
"TPCHD"means the Tacoma-Pierce County health department.
"Underground tank"means any one or a combination of tanks (including underground pipes connected thereto) which are used to contain or dispense an accumulation of hazardous substances or hazardous wastes, and the volume of which (including the volume of underground pipes connected thereto) is 10 percent or more beneath the surface of the ground.
Use.Refer to the definition in the zoning code, chapter
18.04 SMC.
"USGS"means the United States Geologic Survey.
"Utility line"means pipe, conduit, cable or other similar facility by which services are conveyed to the public or individual recipients. Such services shall include, but are not limited to, water supply, electric power, gas, communications, storm sewers (except open ditches) and sanitary sewers.
"Wellhead protection area"(WHPAs) means protective areas associated with public drinking water sources established by water systems and approved or assigned by the state Department of Health chapter
190-030 WAC, WAC
246-290-020 and
246-290-135. They are:
1. Group A wells serve 15 or more service connections or 25 or more people at least 60 days per year.
2. Group B wells serve fewer than 15 connections and fewer than 25 people per day.
(Ord. 1539 § 1 (part), 1992; Ord. 2071 § 2, 2003; Ord. 2439 § 11, 2013; Ord. 2788 § 13, 2021; Ord. 2909 § 2, 2025)