Common use of Load Curtailment Avoidance Clause in Contracts

Load Curtailment Avoidance. The City shall not be responsible for flow which is released when there are no options available other than Firm Load Curtailment" (Section 6.5.4.2) Assumptions: A power scheduler is calculating the spawning flow for a pink spawning day during which heating loads in Seattle are expected to be very high due to effects of an Arctic air mass in the area. The Seattle generating system is operating at maximum capacity. No secondary, exchange, or stored energy is available for acquisition and all firm contract rights are being exercised. Increased generation at the Skagit project is required to meet the load without curtailing power supplies to some firm power customers. The City can voluntarily increase flows at Newhalem up to the Maximum Spawning Flow which for pink salmon is 4000 cfs. Since the Sidestream Inflow is 2500 cfs, 4000 - 2500 = 1500 cfs is within the City's control. Therefore RDL = 5500 - 1500 = 4000 cfs. Actual Xxxx Discharge = 5,500 cfs RDF = 0 RDL = 4,000 cfs SS = 2,500 cfs TSS = 2,500 cfs ANF = 8,000 cfs Calculations: DSF = 8,000 - 4,000 - 0 = 4,000 cfs Conclusion: The Daily Spawning Flow is calculated as 4,000 cfs for that day.

Load Curtailment Avoidance. The City shall not be responsible for flow which is released when there are no options available other than Firm Load Curtailment" (Section 6.5.4.2) Assumptions: A power scheduler is calculating the spawning flow for a pink spawning day during which heating loads in Seattle are expected to be very high due to effects of an Arctic air mass in the area. The Seattle generating system is operating at maximum capacity. No secondary, exchange, or stored energy is available for acquisition and all firm contract rights are being exercised. Increased generation at the Skagit project is required to meet the load without curtailing power supplies to some firm power customers. The City can voluntarily increase flows at Newhalem up to the Maximum Spawning Flow which for pink salmon is 4000 cfs. Since the Sidestream Revised Skagit Fisheries Settlement Agreement page 63 Inflow is 2500 cfs, 4000 - 2500 = 1500 cfs is within the City's control. Therefore RDL = 5500 - 1500 = 4000 cfs. Actual Xxxx Ross Discharge = 5,500 cfs RDF = 0 RDL = 4,000 cfs SS = 2,500 cfs TSS = 2,500 cfs ANF = 8,000 cfs Calculations: DSF = 8,000 - 4,000 - 0 = 4,000 cfs Conclusion: The Daily Spawning Flow is calculated as 4,000 cfs for that day.

Load Curtailment Avoidance. The City shall not be responsible for flow which is released when there are no options available other than Firm Load Curtailment" (Section 6.5.4.2) Assumptions: A power scheduler is calculating the spawning flow for a pink spawning day during which heating loads in Seattle are expected to be very high due to effects of an Arctic air mass in the area. The Seattle generating system is operating at maximum capacity. No secondary, exchange, or stored energy is available for acquisition and all firm contract rights are being exercised. Increased generation at the Skagit project is required to meet the load without curtailing power supplies to some firm power customers. The City can voluntarily increase flows at Newhalem up to the Maximum Spawning Flow which for pink salmon is 4000 cfs. Since the Sidestream Revised Skagit Fisheries Settlement Agreement page 63 Inflow is 2500 cfs, 4000 - 2500 = 1500 cfs is within the City's control. Therefore RDL = 5500 - 1500 = 4000 cfs. Actual Xxxx Discharge = 5,500 cfs RDF = 0 RDL = 4,000 cfs SS = 2,500 cfs TSS = 2,500 cfs ANF = 8,000 cfs Calculations: DSF = 8,000 - 4,000 - 0 = 4,000 cfs Conclusion: The Daily Spawning Flow is calculated as 4,000 cfs for that day.