| #D001 | | AMAL | Average Monthly Action Level | high |
| #D002 | | ASBS | Area(s) of Special Biological Significance | high |
| #D003 | | BMP | Best Management Practice | high |
| #D004 | | Basin Plan | Water Quality Control Plan for the San Diego Basin | high |
| #D005 | | CEQA | California Environmental Quality Act | high |
| #D006 | | CCR | California Code of Regulations | high |
| #D007 | | CFR | Code of Federal Regulations | high |
| #D008 | | CWA | Clean Water Act | high |
| #D009 | | CWC | California Water Code | high |
| #D010 | | CZARA | Coastal Zone Act Reauthorization Amendments of 1990 | high |
| #D011 | | ESAs | Environmentally Sensitive Areas | high |
| #D012 | | GIS | Geographic Information System | high |
| #D013 | | IBI | Index of Biological Integrity | high |
| #D014 | | LID | Low Impact Development | high |
| #D015 | | MDAL | Maximum Daily Action Level | high |
| #D016 | | MEP | Maximum Extent Practicable | high |
| #D017 | | MS4 | Municipal Separate Storm Sewer System | high |
| #D018 | | NAL | Non-Storm Water Action Level | high |
| #D019 | | NAICS | North American Industry Classification System | high |
| #D020 | | NOI | Notice of Intent | high |
| #D021 | | NPDES | National Pollutant Discharge Elimination System | high |
| #D022 | | ROWD | Report of Waste Discharge (application for NPDES reissuance) | high |
| #D023 | | SAL | Storm Water Action Level | high |
| #D024 | | San Diego Water Board | California Regional Water Quality Control Board, San Diego Region | high |
| #D025 | | SIC | Standard Industrial Classification Code | high |
| #D026 | | State Water Board | State Water Resources Control Board | high |
| #D027 | | TMDL | Total Maximum Daily Load | high |
| #D028 | | USEPA | United States Environmental Protection Agency | high |
| #D029 | | WDID | Waste Discharge Identification Number | high |
| #D030 | | WLA | Waste Load Allocation | high |
| #D031 | | WQBEL | Water Quality Based Effluent Limitation | high |
| #D032 | | Active/Passive Sediment Treatment | Using mechanical, electrical or chemical means to flocculate or coagulate suspended sediment for removal from runoff from construction sites prior to discharge. | high |
| #D033 | | Anthropogenic Litter | Trash generated from human activities, not including sediment. | high |
| #D034 | | Average Monthly Action Level | The highest allowable average of daily discharges over a calendar month. | high |
| #D035 | | Beneficial Uses | The uses of water necessary for the survival or wellbeing of man, plants, and wildlife. These uses of water serve to promote tangible and intangible economic, social, and environmental goals. 'Beneficial Uses' of the waters of the State that may be protected include, but are not limited to, domestic, municipal, agricultural and industrial supply; power generation; recreation; aesthetic enjoyment; navigation; and preservation and enhancement of fish, wildlife, and other aquatic resources or preserves. Existing beneficial uses are uses that were attained in the surface or ground water on or after November 28, 1975; and potential beneficial uses are uses that would probably develop in future years through the implementation of various control measures. 'Beneficial Uses' are equivalent to 'Designated Uses' under federal law. [California Water Code Section 13050(f)]. | high |
| #D036 | | Best Management Practices (BMPs) | Defined in 40 CFR 122.2 as schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to prevent or reduce the pollution of waters of the United States. BMPs also include treatment requirements, operating procedures and practices to control plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw material storage. | high |
| #D037 | | Bioassessment | The use of biological community information to evaluate the biological integrity of a water body and its watershed. With respect to aquatic ecosystems, bioassessment is the collection and analysis of samples of the benthic macroinvertebrate community together with physical/habitat quality measurements associated with the sampling site and the watershed to evaluate the biological condition (i.e. biotic integrity) of a water body. | high |
| #D038 | | Biofiltration | Practices that use vegetation and amended soils to detain and treat runoff from impervious areas. Treatment is through filtration, infiltration, adsorption, ion exchange, and biological uptake of pollutants. | high |
| #D039 | | Biological Integrity | Defined in Karr J.R. and D.R. Dudley. 1981. Ecological perspective on water quality goals. Environmental Management 5:55-68 as: 'A balanced, integrated, adaptive community of organisms having a species composition, diversity, and functional organization comparable to that of natural habitat of the region.' Also referred to as ecosystem health. | high |
| #D040 | | BMP Design Manual | A plan developed to eliminate, reduce, or mitigate the impacts of runoff from development projects, including Priority Development Projects. | high |
| #D041 | | Chronic Toxicity | A measurement of sublethal effect (e.g. reduced growth, reproduction) to experimental test organisms exposed to an effluent or receiving waters compared to that of the control organisms. | high |
| #D042 | | Clean Water Act Section 303(d) Water Body | An impaired water body in which water quality does not meet applicable water quality standards and/or is not expected to meet water quality standards, even after the application of technology based pollution controls required by the CWA. The discharge of runoff to these water bodies by the Copermittees is significant because these discharges can cause or contribute to violations of applicable water quality standards. | high |
| #D043 | | Construction Activities | Actions implemented during construction of development or redevelopment projects during the Preliminary Task (including rough grading and/or disking, clearing and grubbing operations, or any soil disturbance prior to mass grading), Grading or Land Development (including topography and slope reconfiguration, alluvium removals, canyon cleanouts, rock undercuts, keyway excavations, land form grading, and stockpiling of select material for capping operations), Streets and Utility Installation (including excavation and street paving, lot grading, curbs, gutters and sidewalks, public utilities, public water facilities including fire hydrants, public sanitary sewer systems, storm sewer systems and/or other drainage improvements), or Vertical Construction (including the build out of structures from foundations to roofing, including rough landscaping). | high |
| #D044 | | Construction Site | Any project, including projects requiring coverage under the Construction General Permit, that involves soil disturbing activities including, but not limited to, clearing, grading, disturbances to ground such as stockpiling, and excavation. | high |
| #D045 | | Contamination | As defined in the Porter-Cologne Water Quality Control Act, contamination is 'an impairment of the quality of waters of the State by waste to a degree which creates a hazard to the public health through poisoning or through the spread of disease. 'Contamination' includes any equivalent effect resulting from the disposal of waste whether or not waters of the State are affected.' | high |
| #D046 | | Copermittee | A permittee to a NPDES permit that is only responsible for permit conditions relating to the discharge for which it is operator [40 CFR 122.26(b)(1)]. For the purposes of this Order, a Copermittee is one of the individual permittees identified in Tables 1a-1c of this Order. | high |
| #D047 | | Copermittees | All of the individual Copermittees, collectively. | high |
| #D048 | | Critical Channel Flow (Qc) | The channel flow that produces the critical shear stress that initiates bed movement or that erodes the toe of channel banks. When measuring Qc, it should be based on the weakest boundary material - either bed or bank. | high |
| #D049 | | Daily Discharge | Defined as either: (1) the total mass of the constituent discharged over the calendar day or any 24 hour period that reasonably represents a calendar day for purposes of sampling (as specified in the permit), for a constituent with limitations expressed in units of mass or; (2) the unweighted arithmetic mean measurement of the constituent over the day for a constituent with limitations expressed in other units of measurement (e.g. concentration.) The Daily Discharge may be determined by the analytical results of a composite sample taken over the course of one day (a calendar day, or other 24 hour period other than a day), or by the arithmetic mean of analytical results from one or more grab samples taken over the course of a day. | high |
| #D050 | | Development Projects | Construction, rehabilitation, redevelopment, or reconstruction of any public or private projects. | high |
| #D051 | | Dry Season | May 1 to September 30. | high |
| #D052 | | Dry Weather | Weather is considered dry if the preceding 72 hours has been without measurable precipitation (>0.1 inch). | high |
| #D053 | | Enclosed Bays | Enclosed bays are indentations along the coast that enclose an area of oceanic water within distinct headlands or harbor works. Enclosed bays include all bays where the narrowest distance between the headlands or outermost bay works is less than 75 percent of the greatest dimension of the enclosed portion of the bay. Enclosed bays do not include inland surface waters or ocean waters. | high |
| #D054 | | Erosion | When land is diminished or worn away due to wind, water, or glacial ice. Often the eroded debris (silt or sediment) becomes a pollutant via storm water runoff. Erosion occurs naturally but can be intensified by land clearing activities such as farming, development, road building, and timber harvesting. | high |
| #D055 | | Environmentally Sensitive Areas (ESAs) | Areas that include but are not limited to all Clean Water Act Section 303(d) impaired water bodies; areas designated as Areas of Special Biological Significance by the State Water Board and San Diego Water Board; State Water Quality Protected Areas; water bodies designated with the RARE beneficial use by the State Water Board and San Diego Water Board; areas designated as preserves or their equivalent under the Natural Communities Conservation Program within the Cities and County of Orange; and any other equivalent environmentally sensitive areas which have been identified by the Copermittees. | high |
| #D056 | | Estuaries | Waters, including coastal lagoons, located at the mouth of streams that serve as areas of mixing fresh and ocean waters. Coastal lagoons and mouths of streams that are temporarily separated from the ocean by sandbars shall be considered estuaries. Estuarine waters shall be considered to extend from a bay or the open ocean to a point upstream where there is no significant mixing of fresh water and ocean water. Estuaries do not include inland surface waters or ocean waters. | high |
| #D057 | | Existing Development | Any area that has been developed and exists for municipal, commercial, industrial, or residential purposes, uses, or activities. May include areas that are not actively used for its originally developed purpose, but may be re-purposed or redeveloped for another use or activity. | high |
| #D058 | | Flow Duration | The long-term period of time that flows occur above a threshold that causes significant sediment transport and may cause excessive erosion damage to creeks and streams (not a single storm event duration). The simplest way to visualize this is to consider a histogram of pre- and post-project flows using long-term records of hourly data. To maintain predevelopment flow duration means that the total number of hours (counts) within each range of flows in a flow-duration histogram cannot increase between the pre- and post-development condition. Flow duration within the range of geomorphologically significant flows is important for managing erosion. | high |
| #D059 | | Grading | The cutting and/or filling of the land surface to a desired slope or elevation. | high |
| #D060 | | Groundwater | Subsurface water that occurs beneath the water table in soils and geologic formations that are fully saturated. | high |
| #D061 | | Hazardous Material | Any substance that poses a threat to human health or the environment due to its toxicity, corrosiveness, ignitability, explosive nature or chemical reactivity. These also include materials named by the USEPA in 40 CFR 116 to be reported if a designated quantity of the material is spilled into the waters of the U.S. or emitted into the environment. | high |
| #D062 | | Hazardous Waste | Hazardous waste is defined as 'any waste which, under Section 600 of Title 22 of this code, is required to be managed according to Chapter 30 of Division 4.5 of Title 22 of this code' [CCR Title 22, Division 4.5, Chapter 11, Article 1]. | high |
| #D063 | | Household Hazardous Waste | Paints, cleaning products, and other hazardous wastes generated during home improvement or maintenance activities. | high |
| #D064 | | Hydromodification | The change in the natural watershed hydrologic processes and runoff characteristics (i.e., interception, infiltration, overland flow, and groundwater flow) caused by urbanization or other land use changes that result in increased stream flows and sediment transport. In addition, alteration of stream and river channels, such as stream channelization, concrete lining, installation of dams and water impoundments, and excessive streambank and shoreline erosion are also considered hydromodification, due to their disruption of natural watershed hydrologic processes. | high |
| #D065 | | Illicit Connection | Any man-made conveyance or drainage system through which a non-storm water discharge to the storm water drainage system occurs or may occur. Any connection to the MS4 that conveys an illicit discharge. | high |
| #D066 | | Illicit Discharge | Any discharge to the MS4 that is not composed entirely of storm water except discharges pursuant to a NPDES permit and discharges resulting from firefighting activities [40 CFR 122.26(b)(2)]. | high |
| #D067 | | Inactive Areas | Areas of construction activity that are not active and those that have been active and are not scheduled to be re-disturbed for at least 14 days. | high |
| #D068 | | Infiltration | In the context of low impact development, infiltration is defined as the percolation of water into the ground. Infiltration is often expressed as a rate (inches per hour), which is determined through an infiltration test. In the context of non-storm water, infiltration is water other than wastewater that enters a sewer system (including sewer service connections and foundation drains) from the ground through such means as defective pipes, pipe joints, connections, or manholes. Infiltration does not include, and is distinguished from, inflow [40 CFR 35.2005(20)]. | high |
| #D069 | | Inland Surface Waters | Includes all surface waters of the State that do not include the ocean, enclosed bays, or estuaries. | high |
| #D070 | | Jurisdictional Runoff Management Program Document | A written description of the specific jurisdictional runoff management measures and programs that each Copermittee will implement to comply with this Order and ensure that storm water pollutant discharges in runoff are reduced to the MEP and do not cause or contribute to a violation of water quality standards. | high |
| #D071 | | Low Impact Development (LID) | A storm water management and land development strategy that emphasizes conservation and the use of on-site natural features integrated with engineered, small-scale hydrologic controls to more closely reflect pre-development hydrologic functions. | high |
| #D072 | | Low Impact Development Best Management Practices (LID BMPs) | LID BMPs include schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to prevent or reduce the pollution of waters of the United States through storm water management and land development strategies that emphasize conservation and the use of on-site natural features integrated with engineered, small-scale hydrologic controls to more closely reflect pre-development hydrologic functions. LID BMPs include retention practices that do not allow runoff, such as infiltration, rain water harvesting and reuse, and evapotranspiration. LID BMPs also include flow-through practices such as biofiltration that may have some discharge of storm water following pollutant reduction. | high |
| #D073 | | Major Outfall | As defined in the Code of Federal Regulations, a major outfall is a MS4 outfall that discharges from a single pipe with an inside diameter of 36 inches or more or its equivalent (i.e. discharge from a single conveyance other than a circular pipe which is associated with a drainage area of more than 50 acres); or, for MS4s that receive storm water from lands zoned for industrial activity (based on comprehensive zoning plans or equivalent), a MS4 outfall that discharges from a single pipe with an inside diameter of 12 inches or more or from its equivalent (i.e. discharge from other than a circular pipe associated with a drainage area of 2 acres or more). | high |
| #D074 | | Maximum Daily Action Level (MDAL) | The highest allowable daily discharge of a pollutant, over a calendar day (or 24 hour period). For pollutants with action levels expressed in units of mass, the daily discharge is calculated as the total mass of the pollutant discharged over the day. For pollutants with action levels expressed in other units of measurement, the daily discharge is calculated as the arithmetic mean measurement of the pollutant over the day. | high |
| #D075 | | Maximum Extent Practicable (MEP) | The technology-based standard established by Congress in CWA section 402(p)(3)(B)(iii) for storm water that operators of MS4s must meet. Technology-based standards establish the level of pollutant reductions that dischargers must achieve, typically by treatment or by a combination of source control and treatment control BMPs. MEP generally emphasizes pollution prevention and source control BMPs primarily (as the first line of defense) in combination with treatment methods serving as a backup (additional line of defense). MEP considers economics and is generally, but not necessarily, less stringent than BAT. | high |
| #D076 | | Monitoring Year | October 1 to September 30 | high |
| #D077 | | Municipal Separate Storm Sewer System (MS4) | A conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains): (i) 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, storm water, 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 designated and approved management agency under section 208 of the CWA that discharges to waters of the United States; (ii) Designated or used for collecting or conveying storm water; (iii) Which is not a combined sewer; (iv) Which is not part of the Publicly Owned Treatment Works (POTW) as defined at 40 CFR 122.26. | high |
| #D078 | | National Pollutant Discharge Elimination System (NPDES) | The national program for issuing, modifying, revoking and reissuing, terminating, monitoring and enforcing permits, and imposing and enforcing pretreatment requirements, under Sections 307, 318, 402, and 405 of the CWA. | high |
| #D079 | | Non-Storm Water | All discharges to and from a MS4 that do not originate from precipitation events (i.e., all discharges from a MS4 other than storm water). Non-storm water includes illicit discharges and NPDES permitted discharges. | high |
| #D080 | | Nuisance | As defined in the Porter-Cologne Water Quality Control Act, a nuisance is 'anything which meets all of the following requirements: 1) Is injurious to health, or is indecent, or offensive to the senses, or an obstruction to the free use of property, so as to interfere with the comfortable enjoyment of life or property. 2) Affects at the same time an entire community or neighborhood, or any considerable number of persons, although the extent of the annoyance or damage inflicted upon individuals may be unequal. 3) Occurs during, or as a result of, the treatment or disposal of wastes.' | high |
| #D081 | | Ocean Waters | The territorial marine waters of the State as defined by California law to the extent these waters are outside of enclosed bays, estuaries, and coastal lagoons. Discharges to ocean waters are regulated in accordance with the State Board's California Ocean Plan. | high |
| #D082 | | Order | Unless otherwise specified, refers to this Order, Order No. R9-2013-0001 (NPDES No. CAS0109266) | high |
| #D083 | | Outfall | Outfall means a point source as defined by 40 CFR 122.2 at the point where a municipal separate storm sewer discharges to waters of the US and does not include open conveyances connecting two municipal separate storm sewers, or pipes, tunnels or other conveyances which connect segments of the same stream or other waters of the US and are used to convey waters of the US. | high |
| #D084 | | Persistent Flow | Persistent flow is defined as the presence of flowing, pooled, or ponded water more than 72 hours after a measureable rainfall event of 0.1 inch or greater during three consecutive monitoring and/or inspection events. All other flowing, pooled, or ponded water is considered transient. | high |
| #D085 | | Person | A person is defined as an individual, association, partnership, corporation, municipality, State or Federal agency, or an agent or employee thereof [40 CFR 122.2]. | high |
| #D086 | | Point Source | Any discernible, confined, and discrete conveyance, including, but not limited to, any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock, concentrated animal feeding operations, landfill leachate collection systems, vessel, or other floating craft from which pollutants are or may be discharged. This term does not include return flows from irrigated agriculture or agricultural storm water runoff. | high |
| #D087 | | Pollutant | Any agent that may cause or contribute to the degradation of water quality such that a condition of pollution or contamination is created or aggravated. | high |
| #D088 | | Pollution | As defined in the Porter-Cologne Water Quality Control Act, pollution is 'the alteration of the quality of the waters of the State by waste, to a degree which unreasonably affects either of the following: 1) The waters for beneficial uses; or 2) Facilities that serve these beneficial uses.' Pollution may include contamination. | high |
| #D089 | | Pollution Prevention | Pollution prevention is defined as practices and processes that reduce or eliminate the generation of pollutants, in contrast to source control BMPs, treatment control BMPs, or disposal. | high |
| #D090 | | Pre-Development Runoff Conditions | Approximate flow rates and durations that exist or existed onsite before land development occurs. For new development projects, this equates to runoff conditions immediately before project construction. For redevelopment projects, this equates to runoff conditions from the project footprint assuming infiltration characteristics of the underlying soil, and existing grade. Runoff coefficients of concrete or asphalt must not be used. A redevelopment Priority Development Project must use available information pertaining to existing underlying soil type and onsite existing grade to estimate pre-development runoff conditions. | high |
| #D091 | | Priority Development Projects | New development and redevelopment projects defined under Provision E.3.b of Order No. R9-2013-0001, as amended by Order Nos. R9-2015-0001 and R9-2015-0100. | high |
| #D092 | | Rainy Season (aka Wet Season) | October 1 to April 30 | high |
| #D093 | | Receiving Waters | Waters of the United States. | high |
| #D094 | | Receiving Water Limitations | Waste discharge requirements issued by the San Diego Water Board typically include both: (1) 'Effluent Limitations' (or 'Discharge Limitations') that specify the technology-based or water-quality-based effluent limitations; and (2) 'Receiving Water Limitations' that specify the water quality objectives in the Basin Plan as well as any other limitations necessary to attain those objectives. In summary, the 'Receiving Water Limitations' provision is the provision used to implement the requirements of CWA section 402(p)(3)(B). | high |
| #D095 | | Redevelopment | The creation and/or replacement of impervious surface on an already developed site. Examples include the expansion of a building footprint, road widening, the addition to or replacement of a structure. Replacement of impervious surfaces includes any activity where impervious material(s) are removed, exposing underlying soil during construction. Redevelopment does not include routine maintenance activities, such as trenching and resurfacing associated with utility work; pavement grinding; resurfacing existing roadways, sidewalks, pedestrian ramps, or bike lanes on existing roads; and routine replacement of damaged pavement, such as pothole repair. | high |
| #D096 | | Regional Clearinghouse | A central location for the collection and distribution of information developed and maintained by the Copermittees including, but not limited to, plans, reports, manuals, data, contact information, and/or links to such documents and information. | high |
| #D097 | | Rehabilitation | Remedial measures or activities for the purpose of improving or restoring the beneficial uses of streams, channels or river systems. Techniques may vary from in-stream restoration techniques to off-line storm water management practices installed in the system corridor or upland areas, or a combination of in-stream and out of stream techniques. Rehabilitation techniques may include, but are not limited to the following: riparian zone restoration, constructed wetlands, channel modifications that improve habitat and stability, and daylighting of drainage systems. | high |
| #D098 | | Reporting Period | The period of information that is reported in the Water Quality Improvement Plan Annual Report. The reporting period consists of two components: 1) July 1 to June 30, consistent with the fiscal year, for the implementation of the jurisdictional runoff management programs, and 2) October 1 to September 30, consistent with the monitoring year for the monitoring and assessment programs. Together, these two time periods constitute the reporting year for the Water Quality Improvement Plan Annual Report due January 31 following the end of the monitoring year. | high |
| #D099 | | Retain | Keep or hold in a particular place, condition, or position without discharge to surface waters. | high |
| #D100 | | Retrofitting | Storm water management practice put into place after development has occurred in watersheds where the practices previously did not exist or are ineffective. Retrofitting of developed areas is intended to improve water quality, protect downstream channels, reduce flooding, or meet other specific objectives. Retrofitting developed areas may include, but is not limited to replacing roofs with green roofs, disconnecting downspouts or impervious surfaces to drain to pervious surfaces, replacing impervious surfaces with pervious surfaces, installing rain barrels, installing rain gardens, and trash area enclosures. | high |
| #D101 | | Runoff | All flows in a storm water conveyance system that consists of the following components: (1) storm water (wet weather flows) and (2) non-storm water including dry weather flows. | high |
| #D102 | | San Diego Water Board | As used in this document the term "San Diego Water Board" is synonymous with the term "Regional Board" as defined in Water Code section 13050(b) and is intended to refer to the California Regional Water Quality Control Board for the San Diego Region as specified in Water Code Section 13200. | high |
| #D103 | | Sediment | Soil, sand, and minerals washed from land into water. Sediment resulting from anthropogenic sources (i.e. human induced land disturbance activities) is considered a pollutant. This Order regulates only the discharges of sediment from anthropogenic sources and does not regulate naturally occurring sources of sediment. Sediment can destroy fishnesting areas, clog animal habitats, and cloud waters so that sunlight does not reach aquatic plants. | high |
| #D104 | | Source Control BMP | Land use or site planning practices, or structural or nonstructural measures that aim to prevent runoff pollution by reducing the potential for contamination at the source of pollution. Source control BMPs minimize the contact between pollutants and runoff. | high |
| #D105 | | Storm Water | Per 40 CFR 122.26(b)(13), means storm water runoff, snowmelt runoff and surface runoff and drainage. Surface runoff and drainage pertains to runoff and drainage resulting from precipitation events. | high |
| #D106 | | Structural BMPs | A subset of BMPs which detains, retains, filters, removes, or prevents the release of pollutants to surface waters from development projects in perpetuity, after construction of a project is completed. | high |
| #D107 | | Test of Significant Toxicity (TST) | A statistical approach used to analyze toxicity test data. The TST incorporates a restated null hypothesis, Welch's t-test, and biological effect thresholds for chronic and acute toxicity. | high |
| #D108 | | Total Maximum Daily Load (TMDL) | The maximum amount of a pollutant that can be discharged into a water body from all sources (point and non-point) and still maintain water quality standards. Under CWA section 303(d), TMDLs must be developed for all water bodies that do not meet water quality standards after application of technology-based controls. | high |
| #D109 | | Toxicity | Adverse responses of organisms to chemicals or physical agents ranging from mortality to physiological responses such as impaired reproduction or growth anomalies. The water quality objectives for toxicity provided in the Basin Plan, state in part…'All waters shall be free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life….The survival of aquatic life in surface waters subjected to a waste discharge or other controllable water quality factors, shall not be less than that for the same water body in areas unaffected by the waste discharge.' | high |
| #D110 | | Toxicity Identification Evaluation (TIE) | A set of procedures for identifying the specific chemical(s) responsible for toxicity. These procedures are performed in three phases (characterization, identification, and confirmation) using aquatic organism toxicity tests. | high |
| #D111 | | Toxicity Reduction Evaluation (TRE) | A study conducted in a step-wise process designed to identify the causative agents of effluent or ambient toxicity, isolate the sources of toxicity, evaluate the effectiveness of toxicity control options, and then confirm the reduction in toxicity. The first steps of the TRE consist of the collection of data relevant to the toxicity, including additional toxicity testing, and an evaluation of facility operations and maintenance practices, and best management practices. A Toxicity Identification Evaluation (TIE) may be required as part of the TRE, if appropriate. | high |
| #D112 | | Treatment Control BMP | Any engineered system designed to remove pollutants by simple gravity settling of particulate pollutants, filtration, biological uptake, media absorption or any other physical, biological, or chemical process. | high |
| #D113 | | Unpaved Road | Any long, narrow stretch without pavement used for traveling by motor passenger vehicles between two or more points. Unpaved roads are generally constructed of dirt, gravel, aggregate or macadam and may be improved or unimproved. | high |
| #D114 | | Waste | As defined in CWC Section 13050(d), 'waste includes sewage and any and all other waste substances, liquid, solid, gaseous, or radioactive, associated with human habitation, or of human or animal origin, or from any producing, manufacturing, or processing operation, including waste placed within containers of whatever nature prior to, and for purposes of, disposal.' | high |
| #D115 | | Water Quality Objective | Numerical or narrative limits on constituents or characteristics of water designated to protect designated beneficial uses of the water. [California Water Code Section 13050 (h)]. California's water quality objectives are established by the State and Regional Water Boards in the Water Quality Control Plans. Numeric or narrative limits for pollutants or characteristics of water designed to protect the beneficial uses of the water. | high |
| #D116 | | Water Quality Standards | Water quality standards, as defined in Clean Water Act section 303(c) consist of the beneficial uses (e.g., swimming, fishing, municipal drinking water supply, etc.,) of a water body and criteria (referred to as water quality objectives in the California Water Code) necessary to protect those uses. Under the Water Code, the water boards establish beneficial uses and water quality objectives in water quality control or basin plans. Together with an anti-degradation policy, these beneficial uses and water quality objectives serve as water quality standards under the Clean Water Act. | high |
| #D117 | | Waters of the State | Any water, surface or underground, including saline waters within the boundaries of the State [CWC section 13050 (e)]. The definition of the Waters of the State is broader than that for the Waters of the United States in that all water in the State is considered to be a Waters of the State regardless of circumstances or condition. | high |
| #D118 | | Waters of the United States | As defined in the 40 CFR 122.2, the Waters of the U.S. are defined as: '(a) All waters, which are currently used, were used in the past, or may be susceptible to use in interstate or foreign commerce, including all waters which are subject to the ebb and flow of the tide; (b) All interstate waters, including interstate 'wetlands;' (c) All other waters such as intrastate lakes, rivers, streams (including intermittent streams), mudflats, sandflats, 'wetlands,' sloughs, prairie potholes, wet meadows, playa lakes, or natural ponds the use, degradation or destruction of which would affect or could affect interstate or foreign commerce including any such waters: (1) Which are or could be used by interstate or foreign travelers for recreational or other purposes; (2) From which fish or shellfish are or could be taken and sold in interstate or foreign commerce; or (3) Which are used or could be used for industrial purposes by industries in interstate commerce; (d) All impoundments of waters otherwise defined as waters of the United States under this definition: (e) Tributaries of waters identified in paragraphs (a) through (d) of this definition; (f) The territorial seas; and (g) 'Wetlands' adjacent to waters (other than waters that are themselves wetlands) identified in paragraphs (a) through (f) of this definition. Waters of the United States do not include prior converted cropland. Notwithstanding the determination of an area's status as prior converted cropland by any other federal agency, for the purposes of the Clean Water Act, the final authority regarding Clean Water Act jurisdiction remains with the EPA.' | high |
| #D119 | | Watershed | That geographical area which drains to a specified point on a water course, usually a confluence of streams or rivers (also known as drainage area, catchment, or river basin). | high |
| #D120 | | Wet Season (aka Rainy Season) | October 1 to April 30 | high |
| #D121 | | Wet Weather | Weather is considered wet up to 72 hours after a storm event of 0.1 inches and greater, unless otherwise defined by another regulatory mechanism (e.g. a TMDL). | high |
| #D122 | | 303(d) List | The priority list of impaired water bodies is called the Clean Water Act Section 303(d) List of Water Quality Limited Segments, commonly referred to as the 303(d) List. | high |
| #D123 | | At the point of discharge(s) | Means in the surf zone immediately where runoff from an outfall meets the ocean water (a.k.a., at point zero). | high |
| #D124 | | Areas of Special Biological Significance (ASBS) | Those areas designated by the State Water Board as ocean areas requiring protection of species or biological communities to the extent that alteration of natural water quality is undesirable. All Areas of Special Biological Significance are also classified as a subset of State Water Quality Protection Areas. | high |
| #D125 | | Design storm | For purposes of these Special Protections, a design storm is defined as the volume of runoff produced from one inch of precipitation per day or, if this definition is inconsistent with the discharger's applicable storm water permit, then the design storm shall be the definition included in the discharger's applicable storm water permit. | high |
| #D126 | | Development | Relevant to reference monitoring sites, means urban, industrial, agricultural, grazing, mining, and timber harvesting land uses. | high |
| #D127 | | Higher threat discharges | Permitted storm drains discharging equal to or greater than 18 inches, industrial storm drains, agricultural runoff discharged through an MS4, discharges associated with waterfront and marina operations (e.g., piers, launch ramps, mooring fields, and associated vessel support activities, except for passive discharges defined below), and direct discharges associated with commercial or industrial activities to ASBS. | high |
| #D128 | | Low Impact Development (LID) | A sustainable practice that benefits water supply and contributes to water quality protection. Unlike traditional storm water management, which entails collecting and conveying storm water runoff through storm drains, pipes, or other conveyances to a centralized storm water facility, LID focuses on using site design and storm water management to maintain the site's pre-development runoff rates and volumes. The goal of LID is to mimic a site's predevelopment hydrology by using design techniques that infiltrate, filter, store, evaporate, and detain runoff close to the source of rainfall. | high |
| #D129 | | Marine Operations | Marinas or mooring fields that contain slips or mooring locations for 10 or more vessels. | high |
| #D130 | | Management Measure (MM) | Economically achievable measures for the control of the addition of pollutants from various classes of nonpoint sources of pollution, which reflect the greatest degree of pollutant reduction achievable through the application of the best available nonpoint pollution control practices, technologies, processes, siting criteria, operating methods, or other alternatives. | high |
| #D131 | | Management Practice (MP) | The practices (e.g., structural, non-structural, operational, or other alternatives) that can be used either individually or in combination to address a specific MM class or classes of NPS pollution. | high |
| #D132 | | Natural Ocean Water Quality | The water quality (based on selected physical, chemical and biological characteristics) that is required to sustain marine ecosystems, and which is without apparent human influence, i.e. , an absence of significant amounts of: (a) man-made constituents ( e.g., DDT); (b) other chemical ( e.g., trace metals), physical (temperature/thermal pollution, sediment burial), and biological ( e.g. , bacteria) constituents at concentrations that have been elevated due to man's activities above those resulting from the naturally occurring processes that affect the area in question; and (c) non-indigenous biota ( e.g., invasive algal bloom species) that have been introduced either deliberately or accidentally by man. | high |
| #D133 | | Nonpoint source | Nonpoint pollution sources generally are sources that do not meet the definition of a point source. Nonpoint source pollution typically results from land runoff, precipitation, atmospheric deposition, agricultural drainage, marine/boating operations or hydrologic modification. Nonpoint sources, for purposes of these Special Protections, include discharges that are not required to be regulated under an NPDES permit. | high |
| #D134 | | Non-storm water discharge | Any runoff that is not the result of a precipitation event. This is often referred to as 'dry weather flow.' | high |
| #D135 | | Non-structural control | A Best Management Practice that involves operational, maintenance, regulatory (e.g., ordinances) or educational activities designed to reduce or eliminate pollutants in runoff, and that are not structural controls (i.e. there are no physical structures involved). | high |
| #D136 | | Physical impossibility | Means any act of God, war, fire, earthquake, windstorm, flood or natural catastrophe; unexpected and unintended accidents not caused by discharger or its employees' negligence; civil disturbance, vandalism, sabotage or terrorism; restrain by court order or public authority or agency; or action or non-action by, or inability to obtain the necessary authorizations or approvals from any governmental agency other than the permittee. | high |
| #D137 | | Representative sites and monitoring procedures | Are to be proposed by the discharger, with appropriate rationale, and subject to approval by Water Board staff. | high |
| #D138 | | Sheet-flow | Runoff that flows across land surfaces at a shallow depth relative to the cross- sectional width of the flow. These types of flow may or may not enter a storm drain system before discharge to receiving waters. | high |
| #D139 | | Storm Season | Also referred to as rainy season, means the months of the year from the onset of rainfall during autumn until the cessation of rainfall in the spring. | high |
| #D140 | | Surf Zone | The surf zone is defined as the submerged area between the breaking waves and the shoreline at any one time. | high |
| #D141 | | Surface Water Ambient Monitoring Program (SWAMP) comparable | Means that the monitoring program must 1) meet or exceed 2008 SWAMP Quality Assurance Program Management Plan (QAPP) Measurement Quality Objectives, or 2) have a Quality Assurance Project Plan that has been approved by SWAMP; in addition data must be formatted to match the database requirements of the SWAMP Information Management System. | high |
| #D142 | | Waterfront Operations | Piers, launch ramps, and cleaning stations in the water or on the adjacent shoreline. | high |
| #D143 | | Existing storm water outfalls | Those that were constructed or under construction prior to January 1, 2005. | high |
| #D144 | | New contribution of waste | Any addition of waste beyond what would have occurred as of January 1, 2005. | high |
| #D145 | | non-storm water discharges | Any waste discharges from a municipal separate storm sewer system (MS4) or other NPDES permitted storm drain system to an ASBS that are not composed entirely of storm water. | high |
| #D146 | | Existing nonpoint source waste discharges | Discharges that were ongoing prior to January 1, 2005. | high |
| #D147 | | New nonpoint source discharges | Those that commenced on or after January 1, 2005. | high |
| #D148 | | non-storm water discharges | Any waste discharges that are not composed entirely of storm water. | high |
| #D149 | | Bypass | The intentional diversion of waste streams from any portion of a treatment facility. | high |
| #D150 | | Severe property damage | Substantial physical damage to property, damage to the treatment facilities which causes them to become inoperable, or substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused by delays in production. | high |
| #D151 | | Upset | An exceptional incident in which there is unintentional and temporary noncompliance with technology based permit effluent limitations because of factors beyond the reasonable control of the Copermittee. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation. | high |
| #D152 | | Escalated enforcement | Any enforcement scenario where a violation or other non-compliance is determined to cause or contribute to the highest priority water quality conditions identified in the Water Quality Improvement Plan. | high |
| #D153 | | TMDLs | Numerical calculations of the maximum amount of a pollutant that a water body can assimilate and still meet water quality standards. A TMDL is the sum of the allowable loads of a single pollutant from all contributing point sources (waste load allocations or WLAs) and non-point sources (load allocations or LAs), background contribution, plus a margin of safety. | high |
| #D154 | | Wet weather days | Storm events of 0.2 inches or greater and the following 72 hours. | high |
| #D155 | | Copermittee | Refers to any San Diego County, Orange County, or Riverside County Copermittee covered under this Order, unless specified otherwise. | high |
| #D156 | | Maximum Extent Practicable (MEP) | The technology-based standard established by Congress in CWA section 402(p)(3)(B)(iii) for storm water that operators of MS4s must meet. Technology-based standards establish the level of pollutant reductions that dischargers must achieve, typically by treatment or by a combination of source control and treatment control BMPs. MEP generally emphasizes pollution prevention and source control BMPs primarily (as the first line of defense) in combination with treatment methods serving as a backup (additional line of defense). MEP considers economics and is generally, but not necessarily, less stringent than BAT. A definition for MEP is not provided either in the statute or in the regulations. Instead the definition of MEP is dynamic and will be defined by the following process over time: municipalities propose their definition of MEP by way of their runoff management programs. Their total collective and individual activities conducted pursuant to the runoff management programs becomes their proposal for MEP as it applies both to their overall effort, as well as to specific activities (e.g., MEP for street sweeping, or MEP for MS4 maintenance). In the absence of a proposal acceptable to the San Diego Water Board, the San Diego Water Board defines MEP. In a memo dated February 11, 1993, entitled "Definition of Maximum Extent Practicable," Elizabeth Jennings, Senior Staff Counsel, SWRCB addressed the achievement of the MEP standard as follows: ' To achieve the MEP standard, municipalities must employ whatever Best Management Practices (BMPs) are technically feasible (i.e., are likely to be effective) and are not cost prohibitive. The major emphasis is on technical feasibility. Reducing pollutants to the MEP means choosing effective BMPs, and rejecting applicable BMPs only where other effective BMPs will serve the same purpose, or the BMPs would not be technically feasible, or the cost would be prohibitive. In selecting BMPs to achieve the MEP standard, the following factors may be useful to consider: a. Effectiveness: Will the BMPs address a pollutant (or pollutant source) of concern? b. Regulatory Compliance: Is the BMP in compliance with storm water regulations as well as other environmental regulations? c. Public Acceptance: Does the BMP have public support? d. Cost: Will the cost of implementing the BMP have a reasonable relationship to the pollution control benefits to be achieved? e. Technical Feasibility: Is the BMP technically feasible considering soils, geography, water resources, etc.? The final determination regarding whether a municipality has reduced pollutants to the maximum extent practicable can only be made by the Regional or State Water Boards, and not by the municipal discharger. If a municipality reviews a lengthy menu of BMPs and chooses to select only a few of the least expensive, it is likely that MEP has not been met. On the other hand, if a municipal discharger employs all applicable BMPs except those where it can show that they are not technically feasible in the locality, or whose cost would exceed any benefit derived, it would have met the standard. Where a choice may be made between two BMPs that should provide generally comparable effectiveness, the discharger may choose the least expensive alternative and exclude the more expensive BMP. However, it would not be acceptable either to reject all BMPs that would address a pollutant source, or to pick a BMP based solely on cost, which would be clearly less effective. In selecting BMPs the municipality must make a serious attempt to comply and practical solutions may not be lightly rejected. In any case, the burden would be on the municipal discharger to show compliance with its permit. After selecting a menu of BMPs, it is the responsibility of the discharger to ensure that all BMPs are implemented.' | high |
| #D157 | | Water Quality Limited Segments | A priority ranking of impaired water bodies established by states as required by the CWA. | high |
| #D158 | | Category 5 | Water bodies included in Category 5 in the Integrated Report indicate at least one beneficial use is not being supported or is threatened, and a TMDL is required. | high |
| #D159 | | Category 4 | Water bodies with available data and/or information that indicate at least one beneficial use is not being supported or is threatened, but a TMDL is not required. | high |
| #D160 | | Category 4a | Impaired surface water bodies where a TMDL has been adopted and approved. | high |
| #D161 | | Category 4b | Impaired surface water bodies where other pollution control requirements required by a local, state or federal authority are stringent enough to implement applicable water quality standards within a reasonable period of time. | high |
| #D162 | | Category 4c | Impaired surface water bodies where the failure to meet an applicable water quality standard is not caused by a pollutant, but caused by other types of pollution. | high |
| #D163 | | Numeric goals | Interim and final numeric goals may take a variety of forms such as TMDL established WQBELs, action levels, pollutant concentration, load reductions, number of impaired water bodies delisted from the List of Water Quality Impaired Segments, Index of Biotic Integrity (IBI) scores, or other appropriate metrics. | high |
| #D164 | | Annual milestones | Annual milestones for each final numeric goal must be clearly and directly linked to, or demonstrate progress is being made toward the achievement of the final numeric goal. The annual milestones may consist of water quality improvement strategy implementation phases, interim numeric goals, and other acceptable metrics. | high |
| #D165 | | Restaurants | A facility that sells prepared foods and drinks for consumption, including stationary lunch counters and refreshment stands selling prepared foods and drinks for immediate consumption (SIC code 5812). | high |
| #D166 | | Hillside development projects | This category includes development on any natural slope that is twenty-five percent or greater. | high |
| #D167 | | Parking lots | A land area or facility for the temporary parking or storage of motor vehicles used personally, for business, or for commerce. | high |
| #D168 | | Streets, roads, highways, freeways, and driveways | This category is defined as any paved impervious surface used for the transportation of automobiles, trucks, motorcycles, and other vehicles. | high |
| #D169 | | Automotive repair shops | A facility that is categorized in any one of the following Standard Industrial Classification (SIC) codes: 5013, 5014, 5541, 7532-7534, or 7536-7539. | high |
| #D170 | | Retail gasoline outlets (RGOs) | This category includes RGOs that meet the following criteria: (a) 5,000 square feet or more or (b) a projected Average Daily Traffic (ADT) of 100 or more vehicles per day. | high |
| #D171 | | ADT | Average Daily Traffic | high |
| #D172 | | design capture volume | The volume of storm water runoff produced from a 24-hour 85th percentile storm event. | high |
| #D173 | | transient | Flowing, pooled, or ponded water observed more than 72 hours after a measureable rainfall event of 0.1 inch or greater that is not present during three consecutive monitoring and/or inspection events. | high |
| #D174 | | LAs | load allocations | high |
| #D175 | | WER | Water Effect Ratio | high |
| #D176 | | MCLs | Maximum Contaminant Levels | high |
| #D177 | | WDRs | waste discharge requirements | high |
| #D178 | | BLRPs | Bacteria Load Reduction Plans | high |
| #D179 | | CLRPs | Comprehensive Load Reduction Plans | high |
| #D180 | | DAMP | Drainage Area Management Plan | high |
| #D181 | | SEEP | SmartTimer/Edgescape Evaluation Program | high |
| #D182 | | IWC | chronic instream waste concentration | high |
| #D183 | | Panel | Water Quality Improvement Consultation Panel | high |
| #D184 | | SIP | State Policy for Implementation of Toxics Standards for Inland Surface Waters, Enclosed Bays, and Estuaries of California (State Implementation Policy) | high |
| #D185 | | DMR | Discharge Monitoring Report | high |
| #D186 | | Pollution | the man-made or man-induced alteration of the chemical, physical, biological, and radiological integrity of water | high |
| #D187 | | Discharging directly to | Includes flow that is conveyed overland a distance of 200 feet or less from the project to the ESA, or conveyed in a pipe or open channel any distance as an isolated flow from the project to the ESA (i.e. not commingled with flows from adjacent lands). | high |
| #D188 | | FR | Federal Register | high |
| #D189 | | MUN | Municipal and Domestic Supply | high |
| #D190 | | AGR | Agricultural Supply | high |
| #D191 | | PROC | Industrial Process Supply | high |
| #D192 | | IND | Industrial Service Supply | high |
| #D193 | | GWR | Ground Water Recharge | high |
| #D194 | | REC1 | Contact Water Recreation | high |
| #D195 | | REC2 | Non-contact Water Recreation | high |
| #D196 | | WARM | Warm Freshwater Habitat | high |
| #D197 | | COLD | Cold Freshwater Habitat | high |
| #D198 | | WILD | Wildlife Habitat | high |
| #D199 | | RARE | Rare, Threatened, or Endangered Species | high |
| #D200 | | FRSH | Freshwater Replenishment | high |
| #D201 | | POW | Hydropower Generation | high |
| #D202 | | BIOL | Preservation of Biological Habitats of Special Significance | high |
| #D203 | | NAV | Navigation | high |
| #D204 | | COMM | Commercial and Sport Fishing | high |
| #D205 | | EST | Estuarine Habitat | high |
| #D206 | | MAR | Marine Habitat | high |
| #D207 | | AQUA | Aquaculture | high |
| #D208 | | MIGR | Migration of Aquatic Organisms | high |
| #D209 | | SPWN | Spawning, Reproduction, and/or Early Development | high |
| #D210 | | SHELL | Shellfish Harvesting | high |
| #D211 | | POTW | Publicly Owned Treatment Works | high |
| #D212 | | QAMP | Quality Assurance Management Plan | high |
| #D213 | | SWAMP | Surface Water Ambient Monitoring Program | high |
| #D214 | | HMP | Hydromodification Management Plan | high |
| #D215 | | SSMP | Standard Storm Water Mitigation Plan | high |
| #D216 | | State Water Board | State Water Resources Control Board | high |
| #D217 | | Weed Control Permit | Statewide NPDES Permits for Residual Aquatic Pesticide Discharges to Waters of the United States from Algae and Aquatic Weed Control Applications | high |
| #D218 | | NOE | a one-page notice that indicates and justifies why the Discharger or proposed Discharger is not eligible for coverage under this General Permit and states the reason why. | high |
| #D219 | | Active Ingredient | Active ingredients are ingredients disclosed by manufacturers that yield toxic effects * on target organisms. | high |
| #D220 | | Adjuvants | Adjuvants are ingredients that are mixed with herbicides prior to an application event and are often trade secrets. These ingredients are chosen by the Discharger, based on site characteristics, and typically increase the effectiveness of pesticides on target organisms. | high |
| #D221 | | Adverse Incident | Adverse Incident means a situation where the Discharger observes upon inspection or becomes aware of in which: - A person or non-target organism may have been exposed to an algaecide or aquatic herbicide residue; and - The person or non-target organism suffered an adverse or toxic effect. | high |
| #D222 | | Adverse or Toxic Effect | An 'adverse or toxic effect' includes any impact that occurs within waters of the United States on non-target organisms as a result of algaecide or aquatic herbicide residue discharge. Examples of these effects may include: - Distressed or dead juvenile and small fishes - Washed up or floating fish - Fish swimming abnormally or erratically - Fish lying lethargically at water surface or in shallow water - Fish that are listless or nonresponsive to disturbance - Stunting, wilting, or desiccation of non-target submerged or emergent aquatic plants - Other dead or visibly distressed non-target aquatic organisms (amphibians, turtles, invertebrates, etc.) An 'adverse or toxic effect' also includes any adverse effects to humans (e.g., skin rashes) or domesticated animals that occur either directly or indirectly from a discharge to waters of the United States that are temporally and spatially related to exposure to an algaecide and aquatic herbicide residue (e.g., vomiting, lethargy). | high |
| #D223 | | Algae Control | Algae control means the treatment of filamentous algae, cyanobacteria (blue-green algae), or algal species that have the potential to affect human or environmental health. | high |
| #D224 | | Application Area | The application area is the area to which aquatic pesticides are directly applied. | high |
| #D225 | | Application Event | The application event is the time that introduction of the algaecide or aquatic herbicide to the treatment area takes place, not the length of time that the environment is exposed to the algaecide or aquatic herbicide. | high |
| #D226 | | Aquatic Pesticides | Aquatic pesticides in this General Permit are limited to algaecides and aquatic herbicides labeled for aquatic use to control aquatic weeds or algae. | high |
| #D227 | | Beneficial Uses | Beneficial uses of the waters of the state that may be protected against quality degradation include, but are not limited to, domestic, municipal, agricultural and industrial supply; power generation; recreation; aesthetic enjoyment; navigation; and preservation and enhancement of fish, wildlife, and other aquatic resources or preserves. | high |
| #D228 | | Coalition | Specifically refers to a monitoring coalition which is a collaborative monitoring partnership of dischargers to develop a monitoring plan that addresses the monitoring requirements of this General Permit. The Coalition's monitoring plan will be submitted for Coalition members in lieu of individual monitoring plans from each member. | high |
| #D229 | | Enclosed Bays | Enclosed Bays means indentations along the coast that enclose an area of oceanic water within distinct headlands or harbor works. Enclosed bays include all bays where the narrowest distance between the headlands or outermost harbor works is less than 75 percent of the greatest dimension of the enclosed portion of the bay. Enclosed bays do not include inland surface waters or ocean waters. | high |
| #D230 | | Estuaries | Estuaries means waters, including coastal lagoons, located at the mouths of streams that serve as areas of mixing for fresh and ocean waters. Coastal lagoons and mouths of streams that are temporarily separated from the ocean by sandbars shall be considered estuaries. Estuarine waters shall be considered to extend from a bay or the open ocean to a point upstream where there is no significant mixing of freshwater and seawater. Estuaries do not include inland surface waters or ocean waters. | high |
| #D231 | | Half-Life | Half-life is the time required for half of the compound introduced into an ecosystem to be eliminated or disintegrated by natural processes. | high |
| #D232 | | Inert Ingredients | Inert ingredients are additional ingredients and are often trade secrets; therefore, they are not always disclosed by the manufacturer. | high |
| #D233 | | Mutual Water Company | A mutual water company is defined in the Public Utilities Code, section 2725 as '[a]ny private corporation or association organized for the purpose of delivering water to its stockholders and members at cost, including use of works for conserving, treating, and reclaiming water." | high |
| #D234 | | Point Source | Any discernible, confined, and discrete conveyance, including but not limited to, any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock concentrated animal feeding operation, landfill leachate collection system, or vessel or other floating craft from which pollutants are or may be discharged. This term does not include return flows from irrigated agriculture or agricultural storm water runoff. | high |
| #D235 | | Priority Pollutants | Priority pollutants are listed within the California Toxics Rule in 40 Code of Federal Regulations, section 131.38(b)(1). Criteria to protect aquatic life and human health are set for priority pollutants in the California Toxics Rule. | high |
| #D236 | | Public Entity | Public entity includes the federal government or a state, county, city and county, city, district, public authority, or public agency. | high |
| #D237 | | Qualified Biologist | A qualified biologist is a biologist who has the knowledge and experience in the ecosystem where the algaecide or aquatic herbicide is applied so that he or she can adequately evaluate whether the beneficial uses of the receiving waters have been protected and/or restored upon completion of the algaecide and aquatic herbicide application project. | high |
| #D238 | | Receiving Waters | Receiving waters are waters of the United States anywhere outside of the treatment area at anytime and anywhere inside the treatment area after completion of the treatment event. | high |
| #D239 | | Representative Monitoring Location | To be considered 'representative,' at a minimum, a location must be similar in hydrology, algaecide or aquatic herbicide use, and other factors that affect the residual discharge to the areas being represented in that environmental setting. | high |
| #D240 | | Residual Algaecide and Aquatic Herbicide | Residual algaecide and aquatic herbicide are those portions of the pesticides that remain in the water after the application and its intended purpose (injury or elimination of targeted pests) have been completed. | high |
| #D241 | | Self Monitoring | Sampling and analysis performed by the Discharger or Coalition to determine compliance with the Permit. All laboratory analyses must be conducted by a laboratory certified by the California Department of Public Health. | high |
| #D242 | | Treatment Area | The treatment area is the area being treated by the algaecide or aquatic herbicide for algae and aquatic weed control and, therefore, the area being targeted to receive an appropriate rate of application consistent with product label requirements of algaecide or aquatic herbicide. It is the responsibility of the Discharger to define the treatment area for each specific algaecide and aquatic herbicide application. | high |
| #D243 | | Waters of the United States | 1. All waters which are currently used, were used in the past, or may be susceptible to use in interstate or foreign commerce, including all waters which are subject to the ebb and flow of the tide; 2. All interstate waters, including interstate 'wetlands;' 3. All other waters such as intrastate lakes, rivers, streams (including intermittent streams), mudflats, sand flats, 'wetlands,' sloughs, prairie potholes, wet meadows, playa lakes, or natural ponds the use, degradation, or destruction of which would affect or could affect interstate or foreign commerce including any such waters: a. Which are or could be used by interstate or travelers for recreational or other purposes; b. From which fish or shellfish are or could be taken and sold in interstate or foreign commerce; or c. Which are used or could be used for industrial purposes by industries in interstate commerce. 4. All impoundments of waters otherwise defined as waters of the United States under this definition; 5. Tributaries of waters identified in items1 through 4 of this definition; 6. The territorial sea; and 7. "Wetlands" adjacent to waters (other than waters that are themselves wetlands) identified in paragraphs (1) through (6) of this definition. Waste treatment systems, including treatment ponds or lagoons designed to meet the requirements of CWA (other than cooling ponds as defined in 40 C.F.R. section 423.11(m) which also meet the criteria of this definition) are not waters of the United States. This exclusion applies only to manmade bodies of water which neither were originally created in waters of the United States (such as disposal area in wetlands) nor resulted from the impoundment of waters of the United States [See Note 1 of this Section.] Waters of the United States do not include prior converted cropland. Notwithstanding the determination of an area's status as prior converted cropland by any other federal agency, for the purposes of the Clean Water Act, the final authority regarding Clean Water Act jurisdiction remains with U.S. EPA. | high |
| #D244 | | Impaired water bodies | Impaired water bodies are water quality limited segments listed under CWA 303(d) listings. | high |