Xxxxxxx Falls Plant Sample Clauses

Xxxxxxx Falls Plant. 2.1.3.1 Existing Minimum Flows Article 21 of the existing license requires a “minimum stream flow of 150 cfs at all times” measured at the USGS gage at Rockingham. In actuality, the minimum flow, as recorded by the gage, has seldom dropped below 200 cfs because Progress Energy puts a generating unit on to increase river flow at Xxxxxxx Falls when the Rockingham gage starts to approach 200 cfs. 2.1.3.2 New Minimum Flow Regime From February 1 through May 15 of each year, the continuous minimum flow will be 2,400 cfs, as measured at the existing USGS gage at Rockingham, to enhance spawning habitat in the Pee Dee River downstream of the Xxxxxxx Falls Development. From May 16 through May 31 of each year, a continuous minimum flow will be 1,800 cfs and for the remainder of the year, June 1 through January 31, the continuous minimum flow will be 1,200 cfs, all subject to allowable variances described below. This Agreement establishes a higher priority on the maintenance of minimum flows than the maintenance of reservoir water levels. Therefore, infrequently, events may require the prioritization of maintaining minimum flows over the reservoir water levels identified in Section 2.2 of this Agreement.

Xxxxxxx Falls Plant. 2.3.2.1 Existing Tailwater Water Quality DO concentrations, as measured by Progress Energy in the tailwater area, have been recorded on occasion below the state standard. This has occurred during periods of thermal stratification in Xxxxxxx Falls Lake. 2.3.2.2 Tailwater Water Quality under the New License Progress Energy has developed a detailed implementation plan for meeting water quality standards at Xxxxxxx and Xxxxxxx Falls dams related to dissolved oxygen as required by Section 401 of the Clean Water Act. Progress Energy agrees to meet dissolved oxygen standards by December 2011.. The schedule includes completion of field testing DO enhancement options by December 2008, and completing successful implementation of the best suited DO enhancement technology by December 2011. 2.3.2.3 Implementation Plan and Schedule Implementation of the Investigation into Turbine Venting Measures to Enhance Tailwater Dissolved Oxygen Concentrations at the Xxxxxxx and Xxxxxxx Falls Hydroelectric Plants has already begun with the preliminary turbine venting trials conducted in 2005 and 2006. More rigorous testing of DO enhancement is on-going. As noted above, full DO enhancement to current North Carolina water quality standards will be achieved by December 2011. Because enhancement may be easier to achieve at Xxxxxxx Falls, DO compliance may be completed ahead of schedule at this site.