View File - Development Services - City of Oxnard

WATER RESOURCES TECHNICAL REPORT4.1.2 LocationThe City of Oxnard GREAT Program would be located in the area of western VenturaCounty known as the Oxnard Plain, which includes the urban and suburban areas of theCity and adjacent communities (for example, Port Hueneme, Nyeland Acres, and El Rio), aswell as agricultural areas of Ventura County, including the Pleasant Valley area. TheOxnard Plain is located approximately 60 miles northwest of downtown Los Angeles and35 miles south of Santa Barbara (see Figure 1-1).The GREAT Program project study area is generally bordered on the north by U.S. Highway101/Ventura Freeway, on the south by the Pacific Ocean and Point Mugu Naval Air Station,on the east by the Santa Monica Mountains, and on the west by the Pacific Ocean. Theproject study area and major GREAT project components are shown in Figure 4-1.4.1.3 GREAT Program ParticipantsThe GREAT Program would be operated through the coordinated effort of several regionalwater purveyors in Ventura County including the following entities: City of Oxnard,UWCD, Calleguas Municipal Water District, Port Hueneme Water Agency, and agriculturalgrowers on the Oxnard Plain and Pleasant Valley. These entities are described in Section 3.0,Water Supply and Demand. Each of these entities would likely participate in the GREATProgram through the supply and/or use of recycled water and, in some cases, potablewater.4.2 GREAT Program OverviewThe GREAT Program is one of the recommended elements of the Capital ImprovementProgram for the City and is designed to meet the City’s projected water supply needsthrough year 2020 (Water System Master Plan, January 2003). To ensure a future reliableand affordable supply of high quality water, the City has developed the GroundwaterRecharge Enhancement and Treatment or GREAT Program to be implemented and operatedin two phases, as summarized in Table 4-1. Phase 1 would be constructed and operated inthe near term, while Phase 2 would be constructed in the future, after Phase 1 is operational.Construction of Phase 1 is anticipated to begin January 2005 and to be completed byAugust 2007. Final design and implementation of Phase 2 would not occur until severaltechnical and regulatory issues (discussed in detail in Section 4.4, Phase 2 Elements) havebeen addressed and clarified as a result of implementation of Phase 1 and the completion ofthe update to the City’s general plan.4.2.1 Phase 1 SummaryPhase 1 of the GREAT Program would include the elements described below, summarizedin Table 4-1, and shown in Figure 4-2. Phase 1 is described in more detail in Section 4.3Phase 1 Elements.• Tertiary Treatment Facility. A recycled water program would be implemented usingeffluent from the existing Oxnard Wastewater Treatment Plant (WWTP). A new tertiarytreatment facility (TTF) would treat effluent from the Oxnard WWTP (which currentlytreats wastewater to secondary standards) for direct nonpotable use (primarilyW112003002SCO LW1458.DOC/ 033390002 48