For the purpose of this chapter, the following definitions shall apply. Words used in the singular shall include the plural, and the plural shall include the singular; words used in the present tense shall include the future tense. The word "shall" is mandatory and not discretionary. The word "may" is permissive. Words not defined in this section shall be construed to have the meaning given by common and ordinary use as defined in the latest edition of Webster's Dictionary.
ADMINISTRATIVE OR CIVIL PENALTIES. Under the authority provided in T.C.A. § 68-221-1106, the city declares that any person violating the provisions of this chapter may be assessed a civil penalty by the city of not less than $50 and not more than $5,000 per day for each day of violation. Each day of violation shall constitute a separate violation.
ANALYTICAL MONITORING. Test procedures for the analysis of pollutants shall conform to regulations published pursuant to Section 304 (h) of the Clean Water Act (the "Act"), as amended, under which such procedures may be required. Pollutant parameters shall be determined using sufficiently sensitive methods in 40 C.F.R. § 136, as amended, and promulgated pursuant to Section 304 (h) of the Act. The chosen methods must be sufficiently sensitive as required in state rule 0400-40-03-.05(8).
AQUATIC RESOURCE ALTERATION PERMIT (ARAP). Physical alterations to properties of the waters of the state require an ARAP or a § 401 Water Quality Certification (§ 401 certification). ARAP means a permit issued pursuant to T.C.A. § 69-3-108 of the Act, which authorizes the alteration of properties of waters of the state that result from activities other than discharges of wastewater through a pipe, ditch, or other conveyance. As built plans (record drawings) mean drawings depicting conditions as they were actually constructed.
BEST MANAGEMENT PRACTICES ("BMPS"). Schedules of activities, prohibitions of practices, maintenance procedures and other management practices to prevent or reduce the discharge of pollutants to waters of the state. BMPs also include treatment requirements, operating procedures; and practices to control plant site runoff, spillage, leaks, sludge or waste disposal, or drainage from raw material storage. BMPs include source control practices (non-structural BMPs) and engineered structures designed to treat runoff.
(1) Structural BMPs are facilities that help prevent pollutants in stormwater runoff from leaving the site.
(2) Non-structural BMPs are techniques, activities and processes that reduce pollutants at the source.
BMP MANUAL. Provides technical guidance including additional policies, criteria, standards, specifications, constants, and information for the proper implementation of the requirements of the National Pollution Discharge Elimination System permit (NPDES) and applicable regulations, 40 C.F.R. § 122 as applicable for stormwater discharges.
BORROW PIT. An excavation from which erodible material (typically soil) is removed to be fill for another site. There is no processing or separation of erodible material conducted at the site. Given the nature of activity and pollutants present at such excavation, a borrow pit is considered a construction activity.
BUFFER ZONE or WATER QUALITY RIPARIAN BUFFER. A permanent strip of natural perennial vegetation, adjacent to a stream, river, wetland, pond, or lake that contains dense vegetation made up of grass, shrubs, and/or trees. The purpose of a water quality riparian buffer is to maintain existing water quality by minimizing risk of any potential sediments, nutrients or other pollutants reaching adjacent surface waters and to further prevent negative water quality impacts by providing canopy over adjacent waters.
CHANNEL. A natural or artificial watercourse with a definite bed and banks that conducts continuously or periodically flowing water.
CLEARING. Refers to removal of vegetation and disturbance of soil prior to grading or excavation in anticipation of construction activities. Clearing may also refer to wide area land disturbance in anticipation of non-construction activities. Clearing, grading, and excavation do not refer to clearing of vegetation along existing or new roadways, highways, dams, or power lines for sight distance or other maintenance and/or safety concerns, or cold planning, milling, and/or removal of concrete and/or bituminous asphalt roadway pavement surfaces. The clearing of land for agricultural purposes is exempt from federal stormwater NPDES permitting in accordance with Section 401(1)(1) of the 1987 Water Quality Act and state stormwater NPDES permitting in accordance with the Tennessee Water Quality Control Act of 1977 (T.C.A. §§ 69-3-101 et seq.).
COMMENCEMENT OF CONSTRUCTION. The initial disturbance of soils associated with clearing, grading, excavating or other construction activities.
COMMERCIAL DEVELOPMENT. Includes but not limited to retail, restaurant, residential rental homes/apartments (multi-family structures or cluster housing), gas stations, convenience stores, office space, medical centers, malls or other intended use with the purpose of generating profit.
COMMON PLAN OF DEVELOPMENT OR SALE. Broadly defined as any announcement or documentation (including a sign, public notice or hearing, sales pitch, advertisement, drawing, permit application, zoning request, computer design, etc.) or physical demarcation (including boundary signs, lot stakes, surveyor markings, etc.) indicating construction activities may occur on a specific plot. A common plan of development or sale identifies a situation in which multiple areas of disturbance are occurring on contiguous areas. This applies because the activities may take place at different times, on different schedules, by different operators.
CONSTRUCTION STORMWATER DISCHARGE-RELATED ACTIVITIES. Activities that cause, contribute to or result in point source stormwater pollutant discharges. These activities may include excavation, site development, grading and other surface disturbance activities; and activities to control stormwater including the siting, construction and operation of Best Management Practices (BMPs).
CONTROL MEASURE. Refers to any Best Management Practice (BMP) or other method used to prevent or reduce the discharge of pollutants to waters of the state.
CWA. The Clean Water Act of 1977 or the Federal Water Pollution Control Act (33 U.S.C. 1251, et seq.)
DESIGN STORM. A storm event as defined by Precipitation-Frequency Atlas of the United States, Atlas 14, Volume 2, Version 3.0, U.S. Department of Commerce, National Oceanic and Atmospheric Administration (NOAA), National Weather Service, Hydrometeorological Design Studies Center, Silver Springs, Maryland or its digital product equivalent. The estimated design rainfall amounts, for any return period interval (i.e., 1-yr, 2-yr, 5-yr, 25-yr, etc.,) in terms of either depths or intensities for any duration, can be found by accessing the data available at https://hdsc.nws.noaa.gov/hdsc/ pfds/pfds_map_cont.html. The Design Storm Events for City of Crossville are as follows: Water Quality (1-yr 24hr) Water Quantity (2-yr, 5-yr and 10-yr) storms.
DISCHARGE or DISCHARGE OF A POLLUTANT. Refers to the addition of pollutants to waters from a source.
ECOREGION. A relatively homogeneous area defined by similarity of climate, landform, soil, potential natural vegetation, hydrology, or other ecologically relevant variables. Ecoregions can be determined for specific stream segments by using Tennessee's Online Water Quality Assessment Data viewer http://tdeconline.tn.gov/dwr.
EXCEPTIONAL TENNESSEE WATERS. Surface waters designated by the Tennessee Department of Environment and Conservation as having the characteristics set forth at Tennessee Rules, Chapter 0400-40-03-.06(4). Characteristics include waters within parks or refuges; scenic rivers; waters with threatened or endangered species; waters that provide specialized recreational opportunities; waters within areas designated as lands unsuitable for mining; waters with naturally reproducing trout; waters with exceptional biological diversity and other waters with outstanding ecological or recreational value.
HOT SPOT. An area where land use or activities generate highly contaminated runoff, with concentrations of pollutants in excess of those typically found in stormwater. Examples might include operations producing concrete or asphalt, auto repair shops, auto supply shops, large commercial parking areas and restaurants.
IMPROVED SINKHOLE. A natural surface depression that has been altered in order to direct fluids into the hole opening. Improved sinkhole is a type of injection well regulated under the Underground Injection Control (UIC) program of the Tennessee Department of Environment and Conservation. Underground injection constitutes an intentional disposal of waste waters in natural depressions, open fractures and crevices, such as those commonly associated with weathering of limestone.
LEVEL 1. Fundamentals of Erosion Prevention and Sediment Control training and certification program administered by University of Tennessee Water Resources Research Center (https://tnepsc.org/index.asp).
LEVEL 2. Design Principles for Erosion Prevention and Sediment Control for Construction Sites training and certification program administered by University of Tennessee Water Resources Research Center (https://tnepsc.org/index.asp).
LINEAR PROJECT. A land disturbing activity as conducted by an underground/overhead utility or highway department, including, but not limited to, any cable line or wire for the transmission of electrical energy; any conveyance pipeline for transportation of gaseous or liquid substance; any cable line or wire for communications; or any other energy resource transmission ROW or utility infrastructure, e.g., roads and highways. Activities include the construction and installation of these utilities within a corridor. Linear project activities also include the construction of access roads, staging areas and borrow/spoil sites associated with the linear project. Land disturbance specific to the development of residential and commercial subdivisions or high-rise structures is not considered a linear project.
MONITORING. Refers to tracking or measuring activities, progress, results, etc., and can refer to nonanalytical monitoring for pollutants by means other than 40 C.F.R. § 136 (and other than state or federally established protocols in the case of biological monitoring and assessments), such as visually or by qualitative tools that provide comparative values or rough estimates.
MUNICIPALITY. Any incorporated city or town, county, metropolitan or consolidated government, or special district of this state empowered to provide stormwater facilities.
ONE-WEEK PERIOD. A synonym of a calendar-week; typically, a period from Sunday through Saturday.
OPERATOR. Any person who owns, leases, operates, controls, or supervises a source. Including, but not limited to, an owner or operator of any "facility or activity" subject to regulation under the NPDES program.
PERMANENT STABILIZATION. All soil disturbing activities at the site have been completed and one of the three following criteria is met:
(1) A perennial, preferably native, vegetative cover with a uniform (i.e., evenly distributed, without large bare areas) density of at least 70% has been established on all unpaved areas and areas not covered by permanent structures, and all slopes and channels have been permanently stabilized against erosion.
(2) Equivalent permanent stabilization measures such as the use of riprap; permanent geotextiles; hardened surface materials including concrete, asphalt, gabion baskets or Reno mattresses have been employed.
(3) For construction projects on land used for agricultural or silvicultural purposes, permanent stabilization may be accomplished by returning the disturbed land to its preconstruction agricultural or silvicultural use.
POINT SOURCE (or OUTFALL). 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, vessel or other floating craft from which pollutants are or may be discharged. This term does not include introduction of pollutants from non-point source agricultural and silvicultural activities, including stormwater runoff from orchards, cultivated crops, pastures, range lands, forest lands or return flows from irrigated agriculture or agricultural stormwater runoff. In short, outfall is a point where runoff leaves the site as a concentrated flow in a discrete conveyance.
POLLUTANT. Sewage, industrial wastes, or other wastes.
PRIORITY CONSTRUCTION. Those construction activities discharging directly into, or immediately upstream of, waters the state recognized as unavailable condition for siltation or Exceptional Tennessee Waters.
RAINFALL EVENT. Any occurrence of rain preceded by ten hours without precipitation that results in an accumulation of 0.01 inches or more. Instances of rainfall occurring within ten hours of each other will be considered a single rainfall event.
REGISTERED ENGINEER AND REGISTERED LANDSCAPE ARCHITECT. An engineer or landscape architect certified and registered by the State Board of Architectural and Engineer Examiners pursuant to T.C.A. § 62-202, to practice in Tennessee.
RUNOFF COEFFICIENT. The fraction of total rainfall that will appear at the conveyance as runoff. Runoff coefficient is also defined as the ratio of the amount of water that is not absorbed by the surface to the total amount of water that falls during a rainstorm.
SEDIMENT. Solid material, both inorganic (mineral) and organic, that is in suspension, is being transported; or has been moved from the site of origin by wind, water, gravity or ice as a product of erosion.
SEDIMENT BASIN. A temporary basin consisting of an embankment constructed across a wet weather conveyance, an excavation that creates a basin or by a combination of both. A sediment basin typically consists of a forebay cell, impoundment, permanent pool, primary spillway, secondary or emergency spillway and surface dewatering device. The size and shape of the basin depends on the location, size of drainage area, incoming runoff volume and peak flow, soil type and particle size, land cover, and receiving stream classification (i.e., waters with unavailable parameters, Exceptional TN Waters, or waters with available parameters).
SEDIMENTATION. The action or process of forming or depositing sediment.
SIGNIFICANT CONTRIBUTOR. A source of pollutants where the volume, concentration, or mass of a pollutant in a stormwater discharge can cause or threaten to cause pollution, contamination, or nuisance that adversely impact human health or the environment and cause or contribute to a violation of any applicable water quality standards for receiving water.
SOIL or TOPSOIL. The unconsolidated mineral and organic material on the immediate surface of the earth that serves as a natural medium for the growth of plants.
STEEP SLOPE or STEEP GRADE. A natural or created slope of 35% grade or greater.
STORMWATER. Rainfall runoff, snow melt runoff, and surface runoff and drainage.
STORMWATER CONTROL MEASURE (SCM). Permanent practices and measures designed to reduce the discharge of pollutants from new development projects or redevelopment projects.
STREAM. As defined by T.C.A. § 69-3-103(38) "stream" means a surface water that is not a wet weather conveyance.
STORMWATER ASSOCIATED WITH INDUSTRIAL ACTIVITY. Defined in 40 C.F.R. § 122.26(b)(l4) and incorporated here by reference. Most relevant to the city is 40 C.F.R. § 122.26(b)(14)(x), which relates to construction activity including clearing, grading, filling and excavation activities, including borrow pits containing erodible material. Disturbance of soil for the purpose of crop production is exempt from NPDES permit requirements, but stormwater discharges from agriculture-related activities that involve construction of structures (e.g., barn construction, road construction, pond construction) are considered associated with industrial (construction) activity. Maintenance to the original line and grade, hydraulic capacity; or to the original purpose of the facility (e.g., re-clearing, minor excavation performed around an existing structure necessary for maintenance or repair and repaving of an existing road) is not considered a construction activity.
STORMWATER POLLUTION PREVENTION PLAN (SWPPP). A written site-specific plan required by the Tennessee Construction General Permit (CGP) that includes a narrative pollution prevention plan and graphical erosion and sediment control plan. In its basic form, the plan contains a site map, a description of construction activities that could introduce pollutants to stormwater runoff, a description of measures or practices to control these pollutants, and erosion and sediment control plans and specifications. The SWPPP should be prepared in accordance with the Tennessee Erosion and Sediment Control Handbook (latest edition).
TAKE OF AN ENDANGERED SPECIES. To harass, harm, pursue, hunt, shoot, wound, kill, trap, capture or collect, or attempt to engage in any such conduct.
TENNESSEE EROSION AND SEDIMENT CONTROL (TDESC) HANDBOOK. A guidance issued by the Division of Water Resources for the purpose of developing stormwater pollution prevention plans and erosion and sediment control plans required by the CGP.
TEMPORARY STABILIZATION. Achieved when vegetation or non-erodible surface has been established on the area of disturbance and construction activity has temporarily ceased. Under certain conditions, temporary stabilization is required when construction activities temporarily cease.
TREATMENT CHEMICALS. Polymers, flocculants or other chemicals used to reduce turbidity in stormwater discharges by chemically bonding to suspended silts and other soil materials and causing them to bind together and settle out. Common examples of anionic treatment chemicals are polyacrylamide-chitosan (PAM-CS).
TURBIDITY. The cloudiness or haziness of a fluid caused by individual particles (suspended solids) that are generally invisible to the naked eye, similar to smoke in air.
WASTE SITE. An area where material from a construction site is disposed of. When the material is erodible, such as soil, the site must be treated as a construction site.
WATERS or WATERS OF THE STATE. Any and all water, public or private, on or beneath the surface of the ground, which are contained within, flow through, or border upon Tennessee or any portion thereof, except those bodies of water confined to and retained within the limits of private property in single ownership which do not combine or effect a junction with natural surface or underground waters.
WATERS WITH UNAVAILABLE PARAMETERS. Any segment of surface waters that has been identified by the TDEC as failing to support one or more classified uses. Unavailable parameters exist where water quality is at, or fails to meet, the levels specified in water quality criteria in Rule 0400-40-03-.03, even if caused by natural conditions. In the case of a criterion that is a single response variable or is derived from measurement of multiple response variables, the unavailable parameters shall be the agents causing water quality to be at or failing to meet the levels specified in criteria. Resources to be used in making this determination include biennial compilations of impaired waters, databases of assessment information, updated GIS coverages (https://tdeconline.tn.gov/dwr/), and the results of recent field surveys. GIS coverages of the streams and lakes not meeting water quality standards, plus the biennial list of waters with unavailable parameters, can be found at https://www.tn.gov/environment/ program-areas/wr-water-resources/water-quality/water-quality-reports---publications.html.
WATER QUALITY RIPARIAN BUFFER. A permanent strip of natural perennial vegetation adjacent to a stream, river, wetland, pond, or lake that contains dense vegetation made up of grass, shrubs, and/or trees. The purpose of a water quality riparian buffer is to maintain existing water quality by minimizing the risk of any potential sediments, nutrients, or other pollutants reaching adjacent surface waters and to further prevent negative water quality impacts by providing canopy over adjacent waters.
WATER QUALITY TREATMENT VOLUME (WQTV). A portion of the runoff generated from impervious surfaces at a new development or redevelopment project by the 1-year 24-hour design storm. The WQTV is further determined by the type of treatment provided.
WET WEATHER CONVEYANCES. Man-made or natural watercourses, including natural watercourses that have been modified by channelization, that meet the following:
(1) The conveyance carries flow only in direct response to precipitation runoff in its immediate locality.
(2) The conveyance's channels are at all times above the groundwater table.
(3) The flow carried by the conveyance is not suitable for drinking water supplies.
(4) Hydrological and biological analyses indicate that, due to naturally occurring ephemeral or low flow under normal weather conditions, there is not sufficient water to support fish or multiple populations of obligate lotic aquatic organisms whose life cycle includes an aquatic phase of at least two months. (Tennessee Rules, Chapter 0400-40-3-.04(3)).
(Ord. 1722, passed 8-13-2024)