Existing water quality definition

Existing water quality means the quality of the receiving water, including chemical, physical, and biological conditions immediately prior to commencement of the proposed activity or that which can be adequately documented to have existed on or after July 1, 1971, whichever is the highest quality.
Existing water quality means the water quality in a water body at the time a water body was designated for its current level of antidegradation protection, as modified to reflect permitted loadings not actually being discharged on the date of designation, provided that such loadings were contained in issued permits prior to the effective date of the designation. This is the water quality that the Department shall utilize as mean water quality when implementing a watershed approach to water quality management for a particular waterbody.
Existing water quality means the physical, chemical, biological, and radiological conditions of a surface water, taking into account natural variability, on the effective date. Existing water quality is expressed either as a concentration of a water quality parameter or by other means to describe the condition of a surface water.

Examples of Existing water quality in a sentence

Existing water quality is defined in Table 1 for stream reaches between Hancock, New York and the Delaware Water Gap and in Table 2 for stream reaches between the Delaware Water Gap and Trenton, New Jersey.

Existing water quality and nonpoint source runoff control technology will be evaluated in the course of the Iowa continuing planning process, and best management practices and limitations on specific water quality parameters will be reviewed and revised from time to time to ensure that the designated water uses and water quality enhancement goals are met.61.2(4) Regulatory mixing zones.

Existing water quality is defined in terms of (a) an annual or seasonal mean of the available water quality data, (b) two-tailed upper and lower 95 percent confidence limits around the mean, and (c) the 10th and 90th percentiles of the data set from which the mean was calculated.

Existing water quality information, which includes the results of prior analyses of the system or individual structures connected to the system, indicating locations that may be particularly susceptible to high lead or copper concentrations.

Existing water quality and ecology of the site as determined by available data or by trend assessment or baseline surveys.

Existing water quality shall be not lower than Class B level pursuant to the water quality standards established under RSA 485-A:8.

Existing water quality data and provision for future water quality monitoring including any water returned to the waterbasin during the removal of excavated materials.

Tier 3: Existing water quality shall be maintained and protected in a surface water that is classified as a unique water an OAW under R18-11-112.

Tier 3: Existing water quality shall be maintained and protected in a surface water that is classified as a unique water orthat the Director has proposed for classification as a unique water pursuant to under R18-11-112.

Existing water quality data indicates conditions are optimal for the type of community and would fully support the ecological values of the area.

Related to Existing water quality

Water quality means the physical characteristics of water within shoreline jurisdiction, including water quantity, hydrological, physical, chemical, aesthetic, recreation-related, and biological characteristics. Where used in this chapter, the term "water quantity" refers only to development and uses regulated under this chapter and affecting water quantity, such as impermeable surfaces and storm water handling practices. Water quantity, for purposes of this chapter, does not mean the withdrawal of ground water or diversion of surface water pursuant to RCW 90.03.250 through 90.03.340.
Applicable water quality standards means all water quality standards to which a discharge is subject under the federal Clean Water Act and which has been (a) approved or permitted to remain in effect by the Administrator following submission to the Administrator pursuant to Section 303(a) of the Act, or (b) promulgated by the Director pursuant to Section 303(b) or 303(c) of the Act, and standards promulgated under (APCEC) Regulation No. 2, as amended.
Water quality standards means provisions of state or federal law which consist of a designated use or uses for the waters of the Commonwealth and water quality criteria for such waters based upon such uses. Water quality standards are to protect the public health or welfare, enhance the quality of water and serve the purposes of the State Water Control Law (§ 62.1-44.2 et seq. of the Code of Virginia) and the federal Clean Water Act (33 USC § 1251 et seq.).
Water quality volume means the volume equal to the first one-half inch of runoff multiplied by the impervious surface of the land development project.
National Ambient Air Quality Standards or “NAAQS” means national ambient air quality standards that are promulgated pursuant to Section 109 of the Act, 42 U.S.C. § 7409.
Ambient air quality standard means an established concentration, exposure time, and frequency of occurrence of air contaminant(s) in the ambient air which shall not be exceeded.
Drinking water means water that meets criteria as specified in 40 CFR 141 National Primary Drinking Water Regulations.
Underground source of drinking water means an aquifer or its portion:
Safe Drinking Water Act means Tit. XIV of the federal Public Health Service Act, commonly known as the “Safe Drinking Water Act”, 42 U.S.C. §300f et seq., as amended by the Safe Drinking Water Amendments of 1996, Pub. L. No. 104-182, as amended.
Stormwater Pollution Prevention Plan or "SWPPP" means a document that is prepared in accordance with good engineering practices and that identifies potential sources of pollutants that may reasonably be expected to affect the quality of stormwater discharges from the construction site, and otherwise meets the requirements of this Ordinance. In addition the document shall identify and require the implementation of control measures, and shall include, but not be limited to the inclusion of, or the incorporation by reference of, an approved erosion and sediment control plan, an approved stormwater management plan, and a pollution prevention plan.
Bottled drinking water means water that is sealed in bottles, packages, or other containers and offered for sale for human consumption, including bottled mineral water.
High Quality Waters means all state waters, except:
New Jersey Stormwater Best Management Practices (BMP) Manual or “BMP Manual” means the manual maintained by the Department providing, in part, design specifications, removal rates, calculation methods, and soil testing procedures approved by the Department as being capable of contributing to the achievement of the stormwater management standards specified in this chapter. The BMP Manual is periodically amended by the Department as necessary to provide design specifications on additional best management practices and new information on already included practices reflecting the best available current information regarding the particular practice and the Department’s determination as to the ability of that best management practice to contribute to compliance with the standards contained in this chapter. Alternative stormwater management measures, removal rates, or calculation methods may be utilized, subject to any limitations specified in this chapter, provided the design engineer demonstrates to the municipality, in accordance with Section IV.F. of this ordinance and N.J.A.C. 7:8-5.2(g), that the proposed measure and its design will contribute to achievement of the design and performance standards established by this chapter.
General air quality operating permit or "general permit" means an air quality operating permit that meets the requirements of ARM 17.8.1222, covers multiple sources in a source category, and is issued in lieu of individual permits being issued to each source.
Solid Waste Disposal Site means, as defined in NCGS 130A-290(a)(36), any place at which solid wastes are disposed of by incineration, sanitary landfill, or any other method.
Erosion and sediment control plan or "plan" means a document containing material for the conservation of soil and water resources of a unit or group of units of land. It may include appropriate maps, an appropriate soil and water plan inventory and management information with needed interpretations, and a record of decisions contributing to conservation treatment. The plan shall contain all major conservation decisions to ensure that the entire unit or units of land will be so treated to achieve the conservation objectives.
Flea and tick insecticide means any insecticide product that is designed for use against fleas, ticks, their larvae, or their eggs. “Flea and Tick Insecticide” does not include products that are designed to be used exclusively on humans or animals and their bedding.
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 Sections 307, 318, 402, and 405 of CWA. The term includes an approved program.
Virginia Stormwater Management Act means Article 2.3 (§ 62.1-44.15:24 et seq.) of Chapter 3.1 of Title 62.1 of the Code of Virginia.
Air transportation means the public carriage by aircraft of passengers, baggage, cargo, and mail, separately or in combination, for remuneration or hire;
Clean Air Act or “Act” means the federal Clean Air Act, 42 U.S.C. §§ 7401-7671q, and its implementing regulations.
Solid waste facility – means any system, facility, land, contiguous land, improvements on the land, structures, or other appurtenances or methods used for processing, recycling, or disposing of solid waste, including landfills, transfer stations, materials recovery facilities, mixed waste processing facilities, sewage sludge processing facilities, commercial composting facilities and other such facilities not herein specified, but not including land upon which sewage sludge is applied in accordance with W. Va. Code §22-15-20 (b). Such facilities shall be deemed to be situated, for the purposes of this rule, in the county where the majority of the spatial area of such facility is located; Provided, That a salvage yard licensed and regulated pursuant to the terms of W. Va. Code §17-23, is not a solid waste facility.
Stormwater runoff means water flow on the surface of the ground or in storm sewers, resulting from precipitation.
Waste tire means a tire that is no longer suitable for its original purpose because of wear, damage or defect.
Solid Waste Disposal Facility means any facility involved in the disposal of solid waste, as defined in NCGS 130A-290(a)(35).
The "Clean Air Act means those provisions contained in 42 U.S.C. §§ 7401 to 7671q, and regulations promulgated thereunder.