NAC445A.1628. Truckee Region: Lake Tahoe Tributaries.

The limits of this table apply to the bodies of water known as the Lake Tahoe Tributaries which are located in Nevada and which are not included in NAC 445A.1632 to 445A.1666, inclusive. The Lake Tahoe Tributaries are located in Carson City and Douglas and Washoe Counties.

STANDARDS OF WATER QUALITY

Lake Tahoe Tributaries

PARAMETER	REQUIREMENTS TO MAINTAIN EXISTING HIGHER QUALITY		WATER QUALITY STANDARDS FOR BENEFICIAL USES		Beneficial Usea
					Livestock	Irrigation	Aquatic	Contact	Noncontact	Municipal	Industrial	Wildlife	Aesthetic	Enhance	Marsh
Beneficial Uses					X	X	X	X	X	X	X	X		X
Aquatic Life Species of Concern					Cold-water fishery.
Temperature - °C			S.V. Oct-May S.V. Jun-Sep	≤ 10.0 ≤ 20.0			*	X
pH - SU			S.V.	6.5 - 9.0	X	X	*	*		X	X	*
Dissolved Oxygen - mg/l			S.V.	≥ 6.0	X		*	X	X	X		X
Total Phosphates (as P) - mg/l			A-Avg.	≤ 0.05			*	X	X	X				*
Nitrogen Species (as N) - mg/l			Nitrate S.V. Nitrite S.V.	≤ 10.0 ≤ 0.06	X		X			*		X		*
Unionized Ammonia - mg/l			S.V.	≤ 0.004			*			X
Total Suspended Solids - mg/l			S.V.	≤ 25.0			*							*
Turbidity - NTU			S.V.	≤ 10.0			*							*
Color - PCU			S.V.	≤ 75.0						*				*
Total Dissolved Solids - mg/l			A-Avg.	≤ 500.0	X	X				*
Chloride - mg/l			S.V.	≤ 250.0	X		*			X		X
Sulfate - mg/l			S.V.	≤ 250.0						*
Sodium - SAR			A-Avg.	≤ 8.0		*
E. coli - No./100 ml			S.V.	≤ 126.0				*	X

* = The most restrictive beneficial use.

X = Beneficial use.

^a     Refer to NAC 445A.122 and 445A.1622 for beneficial use terminology.

     (Added to NAC by Environmental Comm’n by R160-06, eff. 8-26-2008)