For the purposes of this chapter the following words and phrases shall have the meanings respectively ascribed to them by this chapter, unless clearly inapplicable. Words and phrases not ascribed a meaning by this chapter shall have the meanings ascribed by "ORDER NO. 01-182 NPDES PERMIT NO CAS004001 WASTE DISCHARGE REQUIREMENTS FOR MUNICIPAL STORMWATER AND URBAN RUNOFF DISCHARGES WITHIN THE COUNTY OF LOS ANGELES AND THE INCORPORATED CITIES THEREIN, EXCEPT THE CITY OF LONG BEACH" (the "2001 Permit"), or other applicable NPDES permit, if defined therein, and if not, by the STANDARD URBAN STORMWATER MITIGATION PLAN FOR LOS ANGELES COUNTY AND CITIES IN LOS ANGELES COUNTY approved by the executive officer of the California Regional Water Quality Control Board for the Los Angeles Region, on March 8, 2000, as modified by the State Water Resources Control Board in Order WQ 2000-11, if defined therein, and if not, by the regulations implementing the National Pollutant Discharge Elimination System, Clean Water Act Section 402, and Division
7 of the California Water Code, as they may be amended from time to time, if defined therein.
"One hundred thousand square foot industrial/commercial facility"means any development or redevelopment of an industrial/commercial facility that creates at least one hundred thousand square feet of impermeable area, including, but not limited to parking areas. (See "Commercial development" and "Industrial/commercial facility" as defined below.)
"Automotive service facility"means a facility that is in any one of the following standard industrial classification (SIC) codes: 5013, 5014, 5541, 7532-7534 or 7536-7539.
"Best management practice" ("BMP")means any schedule of activities, prohibition of practices, maintenance procedure, program, technology, process, siting criteria, operational methods of measures, or other management practices or engineered systems, which when implemented prevent, control, remove, or reduce pollution. BMPs include structural and nonstructural controls and operation and maintenance procedures which can be applied before, during and after pollution-producing activities.
"Commercial development"means any development on private land that is not residential or a site of an industrial activity as defined in 40 C.F.R. Section
122.26(b)(14). "Commercial development" includes, but is not limited to, hospitals, laboratories and other medical facilities, educational institutions, recreational facilities, plant nurseries, multi-apartment buildings, car wash facilities, mini-malls and other business complexes, shopping malls, hotels, office buildings, public warehouses and other light industrial complexes not within the scope of 40 C.F.R. Section
122.26(b)(14).
"Construction"means constructing, clearing, grading, or excavation that results in soil disturbance. Construction also includes structure demolition. It does not include routine maintenance to maintain original line and grade, hydraulic capacity, or original purpose of a facility; emergency construction activities required immediately to protect public health and safety; interior remodeling with no outside exposure of construction material or construction waste to stormwater; mechanical permit work; or sign permit work.
"Development"means any construction, rehabilitation, redevelopment or reconstruction of any public or private residential project (whether single-family, multi-unit or planned unit development); industrial, commercial, retail and other non-residential projects, including public agency projects; or mass grading for future construction. See California Public Resources Code Section
30106. It does not include routine maintenance to maintain original line and grade, hydraulic capacity, or original purpose of a facility, nor does it include emergency construction activities required to protect immediately public health and safety.
"Disturbed area"means an area that is altered as a result of clearing, grading, and/or excavation.
"Environmentally sensitive area"means an area in which plant or animal life or their habitats are either rare or especially valuable because of their special nature or role in an ecosystem and which would be disturbed or degraded by human activities and developments. See California Public Resources Code Section
30107.5. Areas subject to stormwater mitigation requirements are: any area designated as Significant Ecological Areas by the County of Los Angeles (Los Angeles County Significant Areas Study, Los Angeles County Department of Regional Planning (1976) and amendments); any area designated as a Significant Natural Area by the California Department of Fish and Game's Significant Natural Areas Program, provided that the area has been field verified by the Department of Fish and Game; any area listed in a basin plan as supporting the "rare, threatened, or endangered species (RARE)" beneficial use; and any area identified by the city as environmentally sensitive.
"Hazardous materials"means any materials, wastes or mixture of wastes defined as a "hazardous substance" or "hazardous waste" pursuant to the Resource Conservation and Recovery Act ("RCRA"), 42 U.S.C. Sections
6901 et seq., the Comprehensive Environmental Response, Compensation and Liability Act ("CERCLA"), 42 U.S.C. Sections
9601 et seq., or the Carpenter-Presley-Tanner Hazardous Substance Account Act, ("HSAA"), California Health and Safety Code Sections
25300, et seq., and all future amendments to any of them, or as defined by the California Integrated Waste Management Board. Where there is a conflict in the definitions employed by two or more agencies having jurisdiction over hazardous or solid waste, the term "hazardous waste" shall be construed to have the broader, more encompassing definition.
"Hillside"means a parcel in an area with known erosive soil conditions, where the development will require grading on any natural slope which is twenty-five percent or greater and where grading will result in cut or filled slopes.
"Industrial/commercial facility"means any facility which is the site of the production, manufacture, storage, transportation, distribution, exchange or sale of goods and/or commodities, and any facility involved and/or used in providing professional and non-professional services. This category of facilities includes, but is not limited to, any facility defined by the standard industrial classifications (SIC). Facility ownership (federal, state, municipal, private) and profit motive of the owner or operator of the facility are not factors in this definition.
"New development"means the subdivision of land, or the construction of structures, or other impervious surfaces, or both.
"Parking lot"means an area or facility for the temporary parking or storage of motor vehicles used personally or for business or commerce, which contains five thousand square feet, or more, or twenty-five or more parking spaces, and which is exposed to stormwater.
"Redevelopment"means land-disturbing activity that results in the creation, addition, or replacement of five thousand square feet or more of impervious surface area on an already developed site. Redevelopment includes, but is not limited to: the expansion of a building footprint; addition or replacement of a structure; replacement of impervious surface area that is not part of a routine maintenance activity; and land disturbing activities related to structural or impervious surfaces. It does not include routine maintenance to maintain original line and grade, hydraulic capacity, or original purpose of facility, nor does it include emergency construction activities required to immediately protect public health and safety.
"Restaurant"means a facility where prepared food and beverages are sold for consumption, including stationary lunch counters and refreshment stands selling prepared food and beverages for immediate consumption. (See SIC Code 5812). "Restaurant" does not include co-located stalls or food counters in general purpose establishments such as markets and grocery stores.
"Retail gasoline outlet"means any facility with five thousand or more square feet of impervious surface and projected average daily traffic of one hundred or more vehicles, where gasoline and lubricating oils are sold.
"Significant ecological area (SEA)"means an area that is determined to possess an example of biotic resources that cumulatively represent biological diversity, for the purposes of protecting biotic diversity, as part of the Los Angeles County general plan or the city's general plan. Areas are designated as SEAs, if they possess one or more of the following criteria:
1. The habitat of a rare, endangered or threatened plant or animal species;
2. Biotic communities, vegetative associations, and habitats of plant and animal species that are either one of a kind, or are restricted in distribution on a regional basis;
3. Biotic communities, vegetative associations, and habitat of plant and animal species that are either unique or are restricted in distribution in Los Angeles County;
4. Habitat that at some point in the life cycle of a species or group of species, serves as a concentrated breeding, feeding, resting, migrating grounds and which is limited in availability either regionally or within Los Angeles County;
5. Biotic resources that are of scientific interest because they are either an extreme in physical/geographical limitations, or represent an unusual variation in a population or community;
6. An area important as game species habitat or as fisheries;
7. An area that provides for the preservation of relatively undisturbed examples of natural biotic communities in Los Angeles County;
9. A significant natural area.
"Significant natural area (SNA)"means an area defined by the California Department of Fish and Game (DFG), significant natural areas program, as an area that contains an important example of California biological diversity. (The most current SNA maps, reports, and descriptions can be downloaded from the DFG website at ftp://maphost.dfg.ca.gov/outgoing/whdab/sna/). These areas are identified using the following biological criteria only, irrespective of any administrative or jurisdictional considerations:
1. Areas supporting extremely rare species or habitats;
2. Areas supporting associations or concentrations of rare species or habitats; and
3. Areas exhibiting the best examples of rare species and habitats in the state.
"Source control best management practice" or "Source control BMP"means any schedules of activities, prohibitions of practices, maintenance procedures, managerial practices or operational practices that aim to prevent stormwater pollution by reducing the potential for contamination at the source of pollution. See also structural BMP and treatment control BMP, below.
"Storm event"means a rainfall event that produces more than 0.1 inch of precipitation separated from the previous storm event by at least seventy-two hours of dry weather.
"Structural best management practice" or "structural BMP"means any structural facility designed and constructed to mitigate the adverse impacts of urban runoff pollution (e.g., a canopy, structural enclosure). This category may include both treatment control BMPs and source control BMPs.
"Standard urban stormwater mitigation plan" or "SUSMP"means the "Los Angeles Countywide Standard Urban Stormwater Mitigation Plan" adopted by the Regional Water Quality Control Board for the Los Angeles Region by Resolution No. R-00-02, approving and directing the Executive Officer of the RWQCB-LA to issue a Standard Urban Stormwater Mitigation Plan for Municipal Stormwater And Urban Runoff Management Programs in Los Angeles County, as modified by the State Water Resources Control Board in Order WQ 2001-11, and as further modified and reaffirmed by the California Regional Water Quality Control Board for the Los Angeles Region, in "ORDER NO. 01-182 NPDES PERMIT NO CAS004001 WASTE DISCHARGE REQUIREMENTS FOR MUNICIPAL STORMWATER AND URBAN RUNOFF DISCHARGES WITHIN THE COUNTY OF LOS ANGELES AND THE INCORPORATED CITIES THEREIN, EXCEPT THE CITY OF LONG BEACH" adopted December 13, 2001 (the 2001 Permit).
"Treatment"means the use of engineered systems that use physical, chemical, or biological processes to remove pollutants. Such processes include, but are not limited to filtration, gravity settling, media absorption, biodegradation, biological uptake, chemical oxidation and UV radiation.
(Ord. 917-02 § 1)