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1 d4. B W':':' R F N F 4 d'G "'V b RIVERSIDE PUBLIC UTILITIES Board Memorandum P U 8 L I C U T I L I T I E BOARD OF PUBLIC UTILITIES DATE: March 21, 2013 ITEM NO: 5 SUBJECT: AMENDED AND RESTATED FUNDING AGREEMENT WITH THE RIVERSIDE COUNTY FLOOD CONTROL AND WATER CONSERVATION DISTRICT FOR MOCKINGBIRD CANYON RESERVOIR MECHANICAL EXCAVATION PROJECT ISSUE: The issue for Board of Public Utilities consideration is approval of an Amended and Restated Funding Agreement with the Riverside County Flood Control and Water Conservation District (District) for the Mockingbird Canyon Reservoir Mechanical Excavation Project. RECOMMENDATIONS: That the Board of Public Utilities recommend that the City Council: Approve the Amended and Restated Funding Agreement with the Riverside County Flood Control and Water Conservation District for the Mockingbird Canyon Reservoir Mechanical Excavation Project; 2. Authorize the City Manager, or his designee, to execute the Amended and Restated Funding Agreement with the Riverside County Flood Control and Water Conservation District for the Mockingbird Canyon Reservoir Mechanical Excavation Project; and 3. Authorize the City Manager, or his designee, to execute any other amendments to this Funding Agreements between the District and the City. BACKGROUND: The Mockingbird Canyon Reservoir (Reservoir) was constructed in 1913 by the Gage Canal Company (Gage) to capture and utilize storm water flows within the Gage Canal system for irrigation and groundwater recharge.. Riverside Public Utilities (RPU) acquired the Reservoir in 1965 with the acquisition of the assets of Gage. Over time, as storm events occur, sediments are transported and deposited in the Reservoir. In December 2010, Riverside experienced a major storm event which involved significant rainfall and flooding. As discovered during an investigation of the Reservoir in January 2011, the capacity of the Reservoir has substantially decreased and the integrity of the outlet works was compromised, due to significant sediment deposits. On October 21, 2011, the Board of Public Utilities recommended that the City Council approve a Funding Agreement (Original Agreement) with the District. The Original Agreement provides a 50/50 cost sharing by the District towards construction related costs only, not -to- exceed $800 „000. On December 6, 2011, the City Council approved the Original Agreement.