Nevada Administrative Code
Chapter 445A - Water Controls
WATER POLLUTION CONTROL
Standards for Water Quality
Section 445A.1962 - Central Region: Leidy Creek
The limits of this table apply to the body of water known as Leidy Creek above the hydroelectric plant. Leidy Creek is located in Esmeralda County.
STANDARDS OF WATER QUALITY
Leidy 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 [DELTA]Tb - °C | [DELTA]T | = 0 | S.V. Nov-Apr S.V. May-Jun S.V. Jul-Oct DT | [LESS THEN OR EQUAL TO] 13 [LESS THEN OR EQUAL TO] 17 [LESS THEN OR EQUAL TO] 23 [LESS THEN OR EQUAL TO] 2 | * | X | |||||||||||
pH - SU | S.V. [DELTA]pH | 6.5 - 9.0 ± 0.5 | X | X | X | * | X | X | * | ||||||||
Dissolved Oxygen - mg/l | S.V. Nov-May S.V. Jun-Oct | [GREATER THEN OR EQUAL TO] 6.0 [GREATER THEN OR EQUAL TO] 5.0 | X | * | X | X | X | X | |||||||||
Total Phosphates (as P) - mg/l | A-Avg. S.V. | [LESS THEN OR EQUAL TO]. 0.013 [LESS THEN OR EQUAL TO] 0.03 | A-Avg. | [LESS THEN OR EQUAL TO] 0.1 | * | * | X | X | |||||||||
Nitrogen Species (as N) - mg/l | Nitrate A-Avg. S.V. | [LESS THEN OR EQUAL TO] 0.18 [LESS THEN OR EQUAL TO] 0.22 | Nitrate S.V. Nitrite S.V. | [LESS THEN OR EQUAL TO] 10 [LESS THEN OR EQUAL TO] 0.06 | X | * | X | X | * | X | |||||||
Total Ammonia (as N) - mg/l | c | * | |||||||||||||||
Suspended Solids - mg/l | S.V. | [LESS THEN OR EQUAL TO] 25 | * | ||||||||||||||
Turbidity - NTU | S.V. | [LESS THEN OR EQUAL TO] 10 | * | X | |||||||||||||
Color - PCU | d | * | X | ||||||||||||||
Total Dissolved Solids - mg/l | A-Avg. S.V. | [LESS THEN OR EQUAL TO] 135 [LESS THEN OR EQUAL TO] 150 | A-Avg. | [LESS THEN OR EQUAL TO] 500 | X | X | * | ||||||||||
Chloride - mg/l | A-Avg. S.V. | [LESS THEN OR EQUAL TO] 3 [LESS THEN OR EQUAL TO] 5 | S.V. | [LESS THEN OR EQUAL TO] 250 | X | X | * | X | |||||||||
Sulfate - mg/l | S.V. | [LESS THEN OR EQUAL TO] 250 | * | ||||||||||||||
Sodium - SAR | A-Avg. | [LESS THEN OR EQUAL TO] 8 | * | X | |||||||||||||
Alkalinity (as CaCO3) - mg/l | 25% change from natural conditions | * | X | ||||||||||||||
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 | A.G.M. S.V. | [LESS THEN OR EQUAL TO] 100 [LESS THEN OR EQUAL TO] 200 | 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.1952 for beneficial use terminology.
b Maximum allowable increase in temperature above water temperature at the boundary of an approved mixing zone, but the increase must not cause a violation of the single value standard.
c The ambient water quality criteria for ammonia are specified in NAC 445A.118.
d Increase in color must not be more than 10 PCU above natural conditions.
Added to NAC by Environmental Comm'n by R160-06, eff. 8-26-2008; A by R131-12, 12-20-2012
NRS 445A.425, 445A.520