NAC445A.1652. Truckee Region: First Creek at Dale and Knotty Pine Drives.

The limits of this table apply to the body of water known as First Creek from its origin to Dale and Knotty Pine Drives. This segment of First Creek is located in Washoe County.

STANDARDS OF WATER QUALITY

First Creek at Dale and Knotty Pine Drives

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.		7.0 - 8.1	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.		≤ 0.043	A-Avg.	≤ 0.05			*	X	X	X				*
Nitrogen Species (as N) - mg/l	Total Nitrogen			Nitrate S.V. Nitrite S.V.	≤ 10.0 ≤ 0.06	X		X			*		X		*
	S.V. A-Avg.	≤ 0.3 ≤ 0.2
Unionized Ammonia - mg/l				S.V.	≤ 0.004			*			X
Total Suspended Solids - mg/l				S.V.	≤ 25.0			*							*
Turbidity - NTU	S.V. A-Avg.		≤ 4.0 ≤ 2.0	S.V.	≤ 10.0			*							*
Color - PCU	No increase > 10			S.V.	≤ 75.0						*				*
Total Dissolved Solids - mg/l	S.V. A-Avg.		≤ 80 ≤ 70	A-Avg.	≤ 500.0	X	X				*
Chloride - mg/l	S.V. A-Avg.		≤ 3.0 ≤ 2.0	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)