Statutes, codes, and regulations
Nevada Administrative Code
Chapter 445A - Water ControlsWATER POLLUTION CONTROL
Standards for Water Quality
Section 445A.1702 - Truckee Region: Gray Creek

Nev. Admin. Code § 445A.1702

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Current through November 8, 2024
Section 445A.1702 - Truckee Region: Gray Creek

The limits of this table apply to the body of water known as Gray Creek from its origin to the California-Nevada state line. Gray Creek is located in Washoe County.

STANDARDS OF WATER QUALITY

Gray Creek

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
Aquatic Life Species of Concern
Temperature - °C Avg. Jun-Sep S.V. Summer S.V. Winter [LESS THEN OR EQUAL TO] 20.0 [LESS THEN OR EQUAL TO] 25.0 [LESS THEN OR EQUAL TO] 13.0 * X
pH - SU S.V.6.5 - 9.0 X X * * X X *
Dissolved Oxygen - mg/l S.V. [GREATER THEN OR EQUAL TO] 7.0 X * X X X X
Total Phosphorus (as P) - mg/l S.V. [LESS THEN OR EQUAL TO] 0.1b * * X X
Nitrogen Species (as N)- mg/l Nitrate S.V. [LESS THEN OR EQUAL TO] 10 X * X
Nitrite S.V. [LESS THEN OR EQUAL TO] 0.06 X * X X
Total Nitrogen b * *
Total Ammonia (as N) - mg/lc *
Turbidity - NTU S.V. [LESS THEN OR EQUAL TO] 10 *
Color - PCU S.V. [LESS THEN OR EQUAL TO] 75 *
Total Dissolved Solids - mg/l S.V. [LESS THEN OR EQUAL TO] 500 X X *
Chloride - mg/l 1-hr Avg. 96-hr Avg. [LESS THEN OR EQUAL TO] 860d [LESS THEN OR EQUAL TO] 230 X * X X
Sulfate - mg/l S.V. [LESS THEN OR EQUAL TO] 250 *
E. coli - No./100 ml A.G.M. S.V. [LESS THEN OR EQUAL TO] 126 [LESS THEN OR EQUAL TO] 410 * X
Fecal Coliform - No./100 ml S.V. [LESS THEN OR EQUAL TO] 1,000 X * X X X

* = The most restrictive beneficial use.

X = Beneficial use.

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

b The water must not contain nutrient concentrations from a source other than a natural source which cause the growth of algae or aquatic plants in amounts that interfere with any beneficial uses of the water.

c The ambient water quality criteria for ammonia are specified in NAC 445A.118.

d One-hour and 96-hour average concentration limits may be exceeded only once every 3 years.

Nev. Admin. Code § 445A.1702

Added to NAC by Environmental Comm'n by R160-06, eff. 8-26-2008; A by R127-10, 12-16-2010; R128-12 & R131-12, 12-20-2012

NRS 445A.425, 445A.520