The following definitions shall apply to the interpretation and enforcement of this Chapter.
"Applicant"means a person or public agency applying for a City grading permit.
"Approved"means reviewed and found to be in substantial compliance with requirements of this Chapter.
"Bench"means: (1) a relatively level step excavated into earth materials on which fill may be placed; or (2) a relatively level step excavated or filled for the construction of a drainage device.
"Best Management Practices (BMPs)"means physical, structural, and/or managerial practices, when used singly or in combination, reduce the downstream quality and quantity impacts of stormwater. The term is synonymous with Stormwater Control Measure (SCM).
"Building Official"means the person holding the title of Building Official of the City, or designees.
"Certification"means the attestation of a licensed professional that, based upon the appropriate level of observation and testing, and in accordance with applicable principles of the professional's training, background and experience, the work in question has been completed and performed in conformity with the plans and specifications approved and the provisions of this Chapter.
"Drainage"means: (1) the removal of excess surface water or groundwater from land by means of surface or subsurface drains; or (2) the collection, conveyance, containment, and/or discharge of surface and stormwater runoff.
"Drainage pattern"means the direction, configuration or arrangement of drainage ways and watercourses within a watershed, sub-watershed, drainage basin, individual property or other area.
"Embankment"means a man-made ridge of earth or stone that carries a road or confines a waterway.
"Erosion"means the wearing away of the land surface by water, wind, ice or other geological agents, including such processes as gravitational creep. Erosion occurs naturally from weather or runoff, but can be intensified by human activities.
"Erosion and Sediment Control Plan (ESCP)"means a plan that fully indicates necessary land treatment and structural measures, including a schedule of the timing for their installation, which will effectively minimize soil erosion, sedimentation, and non-stormwater construction-related discharges.
"Infiltration"means the downward movement of water from the surface to the subsoil.
"Infiltration facility"means a drainage facility designed to use the hydrologic process of runoff soaking into the ground, commonly referred to as percolation, to dispose of stormwater.
"Keyway"means an excavated trench into competent earth material beneath the toe of a proposed fill slope.
"Permittee"means a person, partnership, corporation or public agency receiving a grading permit from the City.
"Pollutant"means a contaminant in a concentration or amount that adversely alters the physical, chemical, or biological properties of the natural environment, including, but not limited to, dredged soil, solid waste, incinerator residue, filter backwash, sewage, garbage, sewage sludge, munitions, chemical wastes, biological materials, radioactive materials (except those regulated under the Atomic Energy Act of 1954, as amended), heat, wrecked or discarded equipment, rock, sand, cellar dirt and industrial, municipal, and agricultural waste discharged into water (EPA, 2008).
"Pollution"means the alteration of the quality of waters by waste to a degree which unreasonably affects, or has the potential to unreasonably affect, either the waters for beneficial uses, or the facilities which serve those beneficial uses. Pollution also includes Contamination. (See California Water Code Section
13050(l)(1).)
"Runoff"means surface water originating from precipitation or other sources (e.g., springs, seeps, sprinklers, landscape irrigation), that is found in sheet flow, drainage facilities, rivers, streams, ponds, lakes, wetlands and shallow groundwater.
"Run on"means surface water that originates offsite from precipitation or other sources (e.g., springs, seeps, sprinklers, landscape irrigation), that is found in sheet flow, drainage facilities, rivers, streams, ponds, lakes, wetlands and shallow groundwater and that drains onto another, different or the same site from place of origin.
"Sediment"means solid material, both mineral and organic, that is in suspension, is being transported, or has been moved from its site of origin by air, water, gravity, or ice, and has come to rest on the earth's surface.
"Sedimentation"means deposition of soil particles, clays, silts, sands, or other sediments carried by runoff.
"Storm drain system"means publicly-owned facilities operated by the City, by which Stormwater is collected or conveyed, including, but not limited to, streets, alleys, gutters, curbs, inlets, piped storm drains, pumping facilities, retention and detention basins, natural and human-made or altered drainage channels, and other drainage structures or Stormwater Control Measures (SCMs), which are within the City, or on City property, and are not part of a publicly-owned treatment works, as defined in 40 CFR Section
403.3(q).
"Stormwater"means that portion of precipitation that does not naturally percolate into the ground or evaporate, but flows via overland flow, interflow, channels, or pipes into a defined surface water channel or a constructed infiltration facility. According to 40 CFR Section
122.26(b)(13), this includes stormwater runoff, snow melt runoff, and surface runoff and drainage.
"Stormwater Control Measures (SCMs)"means physical, structural, and managerial measures, when used singly or in combination, reduce the downstream quality and quantity impacts of stormwater. Also, a permit condition used in place of, or in conjunction with, effluent limitations to prevent or control the discharge of pollutants. This may include a schedule of activities, prohibition of practices, maintenance procedures, or other management practices. SCMs may include, but are not limited to, treatment requirements, operating procedures, practices to control plant site runoff, spillage, leaks, sludge, or waste disposal, or drainage from raw material storage.
"Stormwater inspection (SWI) fee"means a fee for the City's inspection of construction sites to verify compliance with an approved Erosion and Sediment Control Plan, Stormwater Pollution Prevention Plan, required SCMs and Best Management Practices.
"Stormwater Pollution Prevention Plan (SWPPP)"means a pollution control plan documenting Stormwater and non-Stormwater Best Management Practices required under 40 CFR Section
122, the Clean Water Act, the Porter Cologne Act, and as implemented through the California Construction General Stormwater Permit requirements.
"Watercourse/drainage setback"means the setback buffer measured from either the top-of-bank or the outer drip-line of the riparian vegetation; whichever is the furthest from a point at the centerline of the adjacent watercourse/drainage. The minimum setback buffer from a watercourse or drainage is 30 feet.
(Ord. 1576(13) § 1)