Section 60. Rise above natural temperature

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Any rise above natural temperature shall not exceed 3°C except in the case of Class VI waters (natural trout waters), where it shall not exceed 1°C. However, the board can, on a case-by-case basis, impose a more stringent limit on the rise above natural temperature. Natural temperature is defined as that temperature of a body of water (measured as the arithmetic average over one hour) due solely to natural conditions without the influence of any point-source discharge.

Historical Notes

Derived from VR680-21-01.6, eff. May 20, 1992.

Statutory Authority

§§ 62.1-44.15(3) and (10) of the Code of Virginia.

                    
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