Except as specifically provided herein, any term used in this Article shall be defined as that term is defined in the current Municipal NPDES Permit, or if it is not specifically defined in the Municipal NPDES Permit, then as such term is defined in the Federal Clean Water Act, and/or the regulations promulgated thereunder. To the extent that any definition of a term contained in this Article conflicts with the corresponding definition contained in the current Municipal NPDES Permit, the definition contained in the Municipal NPDES Permit shall control. The following words and phrases shall have the following meanings for purposes of this Article:
"Area Susceptible to Runoff"means any surface directly exposed to precipitation or in the path of runoff caused by precipitation which path leads off the parcel on which the surface is located.
"Automotive Service Facility"means a facility that is categorized in any one of the following Standard Industrial Classification (SIC) codes: 5013, 5014, 5511, 5541, 7532-7534, and 7536-7539. For inspection purposes, permittees need not inspect facilities with SIC codes 5013, 5014, 5541, 5511 provided that these facilities have no outside activities or materials that may be exposed to stormwater.
"Basin Plan"means the Water Quality Control Plan, Los Angeles Region, Basin Plan for the Coastal Watersheds of Los Angeles and Ventura Counties, adopted by the Regional Water Board on June 13, 1994 and subsequent amendments.
"Best Management Practices (BMPs)"means practices or physical devices or systems designed to prevent or reduce pollutant loading from stormwater or non-stormwater discharges to receiving waters. Examples of BMPs may include, but are not limited to, public education and outreach, proper planning of development projects, proper cleaning of catch basin inlets, and proper sludge- or waste-handling and disposal, among others.
"Biofiltration"means a LID BMP that reduces stormwater pollutant discharges by intercepting rainfall on vegetative canopy or groundcover, and through incidental infiltration and/or evapotranspiration, and filtration. Incidental infiltration is an important factor in achieving the required pollutant load reduction. Therefore, the term "biofiltration" as used in this Article is defined to include only systems designed to facilitate incidental infiltration or achieve the equivalent pollutant reduction as biofiltration BMPs with an underdrain (subject to approval by the Regional Board's Executive Officer). Biofiltration BMPs include bioretention systems with an underdrain and bioswales.
"Bioretention"means a LID BMP that reduces stormwater runoff by intercepting rainfall on vegetative canopy, and through evapotranspiration and infiltration. The bioretention system typically includes a minimum two-foot top layer of a specified soil and compost mixture underlain by a gravel-filled temporary storage pit dug into the in-situ soil. As defined in this Article, a bioretention BMP may be designed with an overflow drain, but may not include an underdrain. When a bioretention BMP is designed or constructed with an underdrain it is regulated by the Municipal NPDES Permit as biofiltration.
"Bioswale"means a LID BMP consisting of a shallow channel lined with grass or other dense, low-growing vegetation. Bioswales are designed to collect stormwater runoff and to achieve a uniform sheet flow through the dense vegetation for a period of several minutes.
"City"means the City of Inglewood.
"Clean Water Act (CWA)"means the Federal Water Pollution Control Act of 1972, as later amended by the Water Quality Act of 1987. The Clean Water Act prohibits the discharge of pollutants to waters of the United States unless the discharge accords with a NPDES Permit.
"Construction Activity"means any construction or demolition activity, clearing, grading, grubbing, or excavation or any other activity that results in land disturbance. Construction does not include emergency construction activities required to immediately protect public health and safety or routine maintenance, further defined herein, which are activities required to maintain the integrity of structures by performing minor repair and restoration work, maintain the original line and grade, hydraulic capacity, or original purposes of the facility.
"Control"means to minimize, reduce or eliminate by technological, legal, contractual, or other means, the discharge of pollutants from an activity or activities.
"Development"means 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. 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.
"Director"means the City's Director of Public Works or the Director's designee.
"Discharge"when used without further qualification of the term means the release of a pollutant or pollutants from the MS4.
"Discretionary Project"is defined in the same manner as Section 15357 of the Guidelines for Implementation of the California Environmental Quality Act contained in Title
14 of the California Code of Regulations, as amended, and means a project which requires the exercise of judgment or deliberation when the City decides to approve or disapprove a particular activity, as distinguished from situations where the City merely determines whether a proposal conforms with applicable statutes, ordinances, or regulations.
"Green Roof"means a LID BMP using planter boxes and vegetation to intercept rainfall on the roof surface. Rainfall is intercepted by vegetation leaves and through evapotranspiration. Green roofs may be designed as either a bioretention BMP or a biofiltration BMP. To receive credit as a bioretention BMP, the green roof system planting medium shall be of sufficient depth to provide capacity within the pore space volume to contain the design storm depth and may not be designed or constructed with an underdrain.
"Illicit Connection"means any man-made conveyance that is connected to the storm drain system without a permit, excluding gutters, roof-drains and other similar connections. Examples of illicit connections include channels, pipelines, conduits, inlets, or outlets that are connected directly to the storm drain system.
"Illicit Discharge"means any discharge to the MS4 that is prohibited under local, State or Federal statutes, ordinances, codes or regulations. This includes all non-stormwater discharges, except authorized non-stormwater discharges; conditionally exempt non-stormwater discharges; and non-stormwater discharges resulting from natural flows specifically identified in the Municipal NPDES Permit.
"Industrial Park"means land development that is set aside for industrial development. Industrial parks are typically located close to transport facilities, especially where more than one transport modalities coincide, including highways, railroads, airports, and navigable rivers. This term includes office parks, which have offices and light industry.
"Infiltration"means the downward entry of water into the surface of the soil.
"Low Impact Development (LID)"means the implementation of systems and practices that use or mimic natural processes to: (1) infiltrate and recharge; (2) evapotranspire; and/or (3) harvest and use precipitation near to where it falls to earth.
"Material"means any substance, including, but not limited to: garbage and debris; lawn clippings, leaves, and other vegetation; biological and fecal waste; sediment and sludge; oil and grease; gasoline; paints, solvents, cleaners, and any fluid or solid containing chemicals.
"Municipal NPDES Permit" or "MS4 Permit"means the "Waste Discharge Requirements and National Pollutant Discharge Elimination System (NPDES) Permit for Municipal Separate Storm Sewer System (MS4) Discharges within the Coastal Watersheds of Los Angeles County and Ventura Counties" issued by the Regional Board, and any successor permit. In the event of any discrepancy between this Article and its citation to a part of the Municipal NPDES Permit, as amended or reissued, then the Director shall be authorized to resolve any such discrepancies so that this Article remains consistent with the requirements of the permit.
"Municipal Separate Storm Sewer System (MS4)" or "Municipal Stormwater System"means a conveyance or system of conveyances, including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, manmade channels, or storm drains:
1. Owned or operated by a state, city, town, borough, county, parish, district, association, or other public body (created by or pursuant to State law) having jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes, including special districts under State law such as a sewer district, flood control district or drainage district, or similar entity, or an Indian tribe or an authorized Indian tribal organization, or a designated and approved management agency under Section 208 of the CWA that discharges to waters of the United States;
2. Designed or used for collecting or conveying stormwater;
3. Which is not a combined sewer; and
4. Which is not part of a publicly owned treatment works (POTW) as defined at 40 C.F.R. Section
122.2 (40 C.F.R. Section
122.26(b)(8)).
"National Pollutant Discharge Elimination System (NPDES)"means the national program for issuing, modifying, revoking and reissuing, terminating, monitoring and enforcing permits, and imposing and enforcing pretreatment requirements, under CWA Sections 307, 402, 318, and 405. The term includes an "approved program."
"Natural Drainage System"means an unimproved drainage system (e.g., channelized or armored). The clearing or dredging of a natural drainage system does not convert it into an improved drainage system.
"New Development"means land disturbing activities; structural development, including construction or installation of a building or structure, creation of impervious surfaces; and land subdivision.
"NPDES Permit"means any waste discharge requirements issued by the California Regional Water Quality Control Board, Los Angeles Region or the State Water Resources Control Board as an NPDES Permit pursuant to Water Code Section
13370.
"Parking Lot"means a land area or facility for the parking or storage of motor vehicles used for businesses, commerce, industry, or personal use.
"Pollutant"means those pollutants defined in Section 502(6) of the CWA (33 U.S.C. Section
1362(6)), or incorporated into California Water Code Section
13373. Examples of pollutants include, but are not limited to, the following:
1. Commercial and industrial waste (such as fuels, solvents, detergents, plastic pellets, hazardous substances, fertilizers, pesticides, slag, ash, and sludge);
2. Metals such as cadmium, lead, zinc, copper, silver, nickel, chromium; and non-metals such as phosphorus and arsenic;
3. Petroleum hydrocarbons (such as fuels, lubricants, surfactants, waste oils, solvents, coolants and grease);
4. Excessive eroded soils, sediment and particulate materials in amounts which may adversely affect the beneficial use of the receiving waters, flora or fauna of the State;
5. Animal wastes (such as discharge from confinement facilities, kennels, pens, recreational facilities, stables, and show facilities);
6. Substances having characteristics such as pH less than six or greater than nine, or unusual coloration or turbidity, or excessive levels of fecal coliform, or fecal streptococcus, or enterococcus.
The term "pollutant" shall not include uncontaminated stormwater, potable water or reclaimed water generated by a lawfully permitted water treatment facility. The term "pollutant" also shall not include any substance identified in this definition if through compliance with the BMPs available, the discharge of such substance has been reduced or eliminated to the maximum extent practicable. In an enforcement action, the burden shall be on the person who is the subject of such action to establish the reduction or elimination of the discharge to the maximum extent practicable through compliance with the BMPs available. |
"Project"means all development, redevelopment, and land disturbing activities. The term is not limited to "project" as defined under CEQA (Public Resources Code Section
21065).
"Rainfall Harvest and Use"means a LID BMP system designed to capture runoff, typically from a roof but can also include runoff capture from elsewhere within the site, and to provide for temporary storage until the harvested water can be used for irrigation or nonpotable uses. The harvested water may also be used for potable water uses if the system includes disinfection treatment and is approved for such use by the local building department in conjunction with requirements of the County Public Health Department.
"Receiving Water"means "water of the United States" into which waste and/or pollutants are or may be discharged.
"Redevelopment"means land-disturbing activity that results in the creation, addition or replacement of impervious surface area on an already developed site for all project categories. "Redevelopment" includes, but is not limited to, the following activities that meet the minimum standards set forth in this definition: (1) the expansion of a building footprint; (2) the addition or replacement of a structure; (3) the replacement of an impervious surface that is not part of a routine maintenance activity; and (4) land-disturbing activities related to structural or impervious surfaces. "Redevelopment" does not include routine maintenance activities that are conducted to maintain original line and grade, hydraulic capacity, original purpose of facility or an emergency redevelopment activity that is required to protect public health and safety.
"Restaurant"means establishments primarily engaged in the retail sale of prepared food and drinks for on-premises or immediate consumption. Caterers and industrial and institutional food service establishments are also included in this industry. (SIC code 5812).
"Retail Gasoline Outlet"means any facility engaged in selling gasoline and lubricating oils. (SIC code 5541 and NAICS 447110 and 447190).
"Routine Maintenance"includes, but is not limited to, projects conducted to:
1. Maintain the original line and grade, hydraulic capacity, or original purpose of the facility.
2. Perform as needed restoration work to preserve the original design grade, integrity and hydraulic capacity of flood control facilities.
3. Carry out road shoulder work, regrade dirt or gravel roadways and shoulders and perform ditch cleanouts.
4. Update existing lines* and facilities to comply with applicable codes, standards, and regulations regardless if such projects result in increased capacity.
5. Repair leaks.
Routine maintenance does not include construction of new** lines or facilities resulting from compliance with applicable codes, standards and regulations. |
*Update existing lines includes replacing existing lines with new materials or pipes. |
**New lines are those that are not associated with existing facilities and are not part of a project to update or replace existing lines. |
"Runoff"means any runoff including stormwater and dry weather flows from a drainage area that reaches a receiving water body or subsurface. During dry weather, runoff is typically comprised of base flow either contaminated with pollutants or uncontaminated, and nuisance flows.
"Site"means land or water area where any "facility or activity" is physically located or conducted, including adjacent land used in connection with the facility or activity.
"Source Control BMP"means any schedule of activities, prohibition 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.
"Storm Drain System"means any facility or any parts of the facility, including streets, gutters, conduits, natural or artificial drains, channels and watercourse that are used for the purpose of collecting, storing, transporting or disposing of stormwater and are located within the City.
"Stormwater"means runoff and drainage related to precipitation events (pursuant to 40 C.F.R. Section
122.26(b)(13);
55 Fed. Reg. 47990, 47995 (Nov. 16, 1990)).
"Stormwater Runoff" or "Urban Runoff"means surface water flow produced by storm and non-storm events. Non-storm events include flow from residential, commercial or industrial activities involving the use of potable and non-potable water. When all other factors are constant, runoff increases as the perviousness of a surface decreases.
"Structural BMP"means any structural facility designed and constructed to mitigate the adverse impacts of stormwater and urban runoff pollution (e.g., canopy, structural enclosure). Structural BMPs may include both treatment control BMPs and source control BMPs.
"Treatment"means the application 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 adsorption, biodegradation, biological uptake, chemical oxidation and UV radiation.
"Treatment Control BMP"means any engineered system designed to remove pollutants by simple gravity settling of particulate pollutants, filtration, biological uptake, media adsorption or any other physical, biological, or chemical process.
(Ord. 23-09 4-4-23)