View File - Development Services - City of Oxnard

WATER RESOURCES TECHNICAL REPORThistorical pumping allocation is credited to the pumper and was based on actual extractionsduring the 5-year base period from 1985 to 1989. A series of 5 percent reductions tohistorical pumping allocations is scheduled every 5 years until a 25 percent reduction isachieved in the year 2010. To date, reductions of 15 percent from 1985-1989 pumping levelshave been implemented; and two additional 5 percent reductions are scheduled for 2005and 2010.By not pumping its wells significantly during the FCGMA Base period, the City did notgenerate an adequate historical allocation. The City has accumulated unused pumpingallocation that it has been recently using to make up for the lack of allocation because ofnew system demands. UWCD also holds additional pumping allocations in trust for theCity. These allocations are subject to the same reductions as the City wells. The historicaland projected allocations of the City for the groundwater resources are shown below.FCGMA Groundwater Allocation for City of OxnardAvailable Groundwater, AFYGroundwater Source Historical Allocation 2000 - 2004 2005 - 2009 2010 -City Wells 6,814 5,879 5,568 5,255UWCD Suballocation 6,238 5,302 4,990 4,678Total 13,052 11,181 10,558 9,933In addition to the limits on the amount of groundwater that can be extracted, the City islimited to the amount that can be physically delivered to its blending stations, in particularfrom the UWCD suballocation. The O-H pipeline is the primary vehicle for delivering thiswater source. The peak capacity in the O-H pipeline is 53.0 cfs, which UWCD agrees tomaintain as the minimum capacity as long as UWCD determines it is feasible as supportedby engineering data. However, this minimum capacity may be increased by UWCD tomeet operational demands, as permitted by the system and as supported by verifiableengineering data. The capacity allocation of the O-H pipeline by user, based on the currentWater Supply Agreement for Delivery of Water Through the O-H pipeline (UWCD, 1996), isprovided below.O-H Pipeline Capacity AllocationAgency Capacity, cfs Percent of TotalCity of Oxnard 26.75 50.47• City Service Area 21.75 41.04• Ocean View Service Area 5.0 9.43Port Hueneme Water Agency 22.25 41.98Dempsey Road Mutual Water Agency 0.85 1.60Cypress Mutual Water Company 0.40 0.75Donlon Farms 0.05 0.09Saviers Road Mutual Water Company 0.25 0.47Rio School District 1.10 2.08Vineyard Avenue Estates 1.35 2.55Total 53.00 100.00This agreement is being amended and is expected to be adopted in the near future.W112003002SCO LW1458.DOC/ 033390002 36