Definitions for stormwater rules

This article's words and phrases have the meaning ascribed to them in this section, unless it is apparent from the context that a different meaning is intended. Words, terms, or expressions specific to stormwater not defined in this chapter have the same meanings as defined in chapter 55 of title 11 , Hawaiʻi Administrative Rules, as amended. "Accidental discharge" means an illicit discharge that is inadvertent and unintentional. "BMPs" means best management practices. "Director" means the director of public works or the director's authorized representative. "Drainageway" means a natural, altered, or improved channel that has intermittent or continuous water flow because of either surface stormwater or groundwater influx, or both, including to channels, streambeds, stream banks, stream mouths, ditches, flumes, and underground drain lines or systems, and any portion of irrigation systems. "Hazardous spill" means a spill of any material, including any substance, waste, or combination of substance and waste, that because of its quantity, concentration, or physical, chemical, or infectious characteristics may cause or significantly contribute to a substantial present or potential hazard to human health, safety, property, or the environment when improperly treated, stored, transported, discharged, released, disposed of, or otherwise managed. "Illicit discharge" means any direct or indirect non-stormwater discharge to the storm-drainage system, except as allowed under section 14.81.010 . "Industrial activity" means an activity subject to NPDES industrial permits as defined in title 40, Code of Federal Regulations, section 122.26 (b)(14), as amended, or any activity of, relating to, or resulting from the industry. "Intentionally" means acting with a conscious objective to cause the result or engage in the conduct described. "Knowingly" means acting with an awareness that the conduct of the person is of a nature described or that a circumstance so described exists. "Maximum extent practicable" means economically achievable measures for the control of the addition of pollutants from contamination sources that reflect the greatest degree of pollutant reduction achievable through the application of the best available pollution-control practices, technologies, processes, siting criteria, operating methods, or other alternatives. "Non-stormwater discharge" means any discharge that is not composed entirely of stormwater. "NPDES" means the National Pollutant Discharge Elimination System. "Premises" means any building, lot, parcel of land, or portion of land, whether improved or unimproved, including adjacent sidewalks and parking strips. "Receiving waters" means creeks, streams, rivers, lakes, estuaries, the ocean, or other bodies of water into which surface water, treated waste, or untreated waste are discharged. "Responsible party" means the property owner, any person authorized to act on the owner's behalf, or any person allowing, causing, or contributing to a violation of this article. "Runoff" means the draining of water from the surface of an area of land, a structure, or any constructed surface. "Stormwater" means the same as "storm water" as defined in chapter 55 of title 11 , Hawaiʻi Administrative Rules, as amended. "Storm-drainage system" means any land or facility by which stormwater is collected or conveyed, including impervious and non-impervious surfaces, roads with other storm-drainage systems, streets, curbs, gutters, inlets, piped storm drains, maintenance holes, ditches, swales, culverts, drainageways, natural and human-made or -altered drainage channels, retention and detention basins, reservoirs, outlets, drywells, infiltration structures, and other drainage structures. ( Ord. No. 5749 , § 1, 2024)