Chronic standard definition

Chronic standard means the four-day average concentration does not exceed the listed concentration more than once every three years.
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Chronic standard means the level not to be exceeded by the concentration for either a single representative sample or calculated as an average of all samples collected during a thirty- day period, except for temperature, which shall be based on the WAT (see WAT definition). As used in tables II and III, chronic represents the level that protects 95 percent of the genera from chronic toxic effects. Chronic toxic effects include, but are not limited to, demonstrable abnormalities and adverse effects on survival, growth, or reproduction. The chronic standard is implemented in combination with a selected duration and frequency of recurrence (section 31.9(1)). In determining attainment of the applicable chronic standard, the representative nature of the data must be considered.
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Chronic standard or "CS" means the highest water concentration of a toxicant to which organisms can be exposed indefinitely without causing chronic toxicity. Chronic standards are listed in parts 7050.0220 and 7050.0222.
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Examples of Chronic standard in a sentence

  • The acronym “CS” (Chronic standard) is spelled out the first time it is used in this provision, in case the reader is visiting this subpart for the first time.

  • Chronic standard is “the highest water concentration of a toxicant to which organisms can be exposed indefinitely without causing chronic toxicity.” Minn.


More Definitions of Chronic standard

Chronic standard means the level not to be exceeded by the concentration for either a single representative sample or calculated as an average of all samples collected during a thirty- day period. As used in tables II and III, chronic represents the level that protects 90 to 95 percent of the genera from chronic toxic effects from unionized ammonia and 95 percent of the genera from chronic toxic effects from metals. Chronic toxic effects include, but are not limited to, demonstrable abnormalities and adverse effects on survival, growth, or reproduction. The chronic standard is implemented in combination with a selected duration and frequency of recurrence (section 31.9(1)).
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Chronic standard. (CS) shall mean the highest water concentration of a toxicant to which aquatic organisms can be exposed indefinitely without causing chronic toxicity.
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Chronic standard means a standard that applies to the arithmetic mean of samples collected during four consecutive days; chronic standards shall not be exceeded more than once every three years.
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Chronic standard means the highest water concentration of a to which organisms can be exposed indefinitely without causing chronic toxicity.Chronic
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Chronic standard means the water quality standard that is intended to protect a beneficial use over a prolonged exposure period. This period is usually based on a 30 day average but may be shorter (4-7 day) or longer (lifetime exposure).
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Related to Chronic standard

  • Electronic Signatures means any electronic symbol or process attached to, or associated with, any contract or other record and adopted by a person with the intent to sign, authenticate or accept such contract or record.

  • Standards means the British or international standards, Authority's internal policies and procedures, Government codes of practice and guidance referred to in Framework Schedule 13 (Standards) together with any other specified policies or procedures identified in Framework Schedule 13 (Standards);

  • Chronic pain means a state in which pain persists beyond the usual course of an acute disease or healing of an injury, or that may or may not be associated with an acute or chronic pathologic process that causes continuous or intermittent pain over months or years.

  • Electronic service means the electronic service provided by the Comptroller under section 8A(1);

  • Electronic Services means a service provided by us, for example an Internet trading service offering clients access to information and trading facilities, via an internet service, a WAP service and/or an electronic order routing system.

  • Reliability Standard means a requirement to provide for reliable operation of the bulk power system, including without limiting the foregoing requirements for the operation of existing bulk power system facilities, including cybersecurity protection, and the design of planned additions or modifications to such facilities to the extent necessary for reliable operation of the bulk power system, but shall not include any requirement to enlarge bulk power system facilities or to construct new transmission capacity or generation capacity.

  • coercive practices means harming or threatening to harm, directly or indirectly, persons, or their property to influence their participation in a procurement process, or affect the execution of a contract;

  • Cosmetic means surgery, procedures or treatment and other services performed primarily to enhance or improve appearance, including but not limited to, and except as otherwise required by state or federal law, those surgeries, procedures, treatments and other services performed in the absence of a functional impairment of a body part or organ as documented in the medical record, even if such services will improve emotional, psychological or mental condition or function.