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Petition No. 2003-09

LCB File No. R- 226-03

Date Received by Commission: 12/04/ 03

Summary: Proposed changes to the water quality standards for the Class Waters, contained in the Nevada Administrative Code (NAC) 445A.124 through 445A.127.

Current Status: Petitions was approved by the SEC on February 26, 2004

Nevada Administrative Code: NAC 445A.124 through 445A.127

Effective/Filed: First filing with LCB: 12/05/03

Adopted by LCB: April 23, 2004

Petitioner: Bureau of Water Quality Planning - Tom Porta

Description of Petition: Under section 303 of the Clean Water Act and 40 CFR 131, States have responsibility for setting, reviewing and revising water quality standards. This petition address proposed changes to the water quality standards for the Class Waters, contained in the Nevada Administrative Code (NAC) 445A.124 through 445A.127. The Class waters are generally the smaller streams and rivers, as opposed to the major rivers of the State like the Truckee, Carson, and Humboldt Rivers. Class waters include streams that exit the mountain ranges and are either siphoned off for irrigation or infiltrate into the playas. Class waters can also be tributaries to the major rivers, like the Little Humboldt, Reese Rivers and Steamboat Creek, or the lower portions of the rivers like the lower Humboldt and Carson Rivers. The Class waters are divided into four classes, A through D; class A being the highest quality water and class D being lower water quality. Each class has a definition, a set of beneficial uses, and a set of narrative and numeric standards. Therefore all waters in the same class have the same beneficial uses and the same water quality standards.

Waterbodies for each class are listed in the NAC by county. The Nevada Division of Environmental Protection (NDEP) has reviewed the beneficial uses and water quality standards on the Class waters and has divided the review into a number of tasks. Only task A is addressed under this petition

Annotated History of the Petition: The Petition was received by the Commission on 12/04/03 and was subsequently filed with LCB for a 30 day review starting on 12/05/03 and then approved by the SEC on February 26, 2004. The regulations was adopted by LCB on April 23, 2004.

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