Section 70. Maximum hourly temperature change

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The maximum hourly temperature change shall not exceed 2°C, except in the case of Class VI waters (natural trout waters) where it shall not exceed 0.5°C. These criteria shall apply beyond the boundaries of mixing zones and are in addition to temperature changes caused by natural conditions.

Historical Notes

Derived from VR680-21-01.7, eff. May 20, 1992; amended, Volume 14, Issue 04, eff. December 10, 1997.

Statutory Authority

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

                    
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