View File - Development Services - City of Oxnard

WATER RESOURCES TECHNICAL REPORT• Segment C – Option 1: Channel Islands Boulevard Tie-in. This connection wouldbegin at the northern extent of Segment B, located at the intersection of Pleasant ValleyRoad and the Oxnard-Hueneme Pipeline. The Channel Islands Boulevard tie-in wouldtravel northeast along Pleasant Valley Road to Olds Road, then north along Olds Road,crossing Pacific Coast Highway, then east along Channel Islands Boulevard where itwould connect to the PTP irrigation system at Rice Avenue. This tie-in option providesseveral opportunities to provide water to the City’s existing potable water customers,most notably Oxnard City College, Channel Island High School, and College Park. TheChannel Islands Boulevard tie-in would consist of approximately 10,400 linear feet of16-inch-diameter pipeline and would be located primarily within existing roadrights-of-way. The City would obtain the necessary permissions to construct withinexisting easements along this route.• Segment C – Option 2: Etting Road Tie-in. This connection would begin along SegmentB at the intersection of Hueneme Road and Olds Road. The Etting Road tie-in wouldtravel north along Olds Road to Etting Road, then east along Etting Road to theintersection of Dodge Road where it would connect the PTP irrigation system. This tie-inoption would afford the City the opportunity to serve two cemeteries, a junior highschool, and agricultural users not currently served by the PTP irrigation system. TheEtting Road tie-in would consist of approximately 9,200 linear feet of 16-inch-diameterpipeline and would be located entirely within existing road rights-of-way.• Segment C – Option 3: Nauman Road Tie-in. This connection would begin alongSegment B at the intersection of Hueneme Road and Nauman Road. The Nauman Roadtie-in would travel north along Nauman Road to Etting Road, then west along EttingRoad to the intersection of Hailes Road where it would connect to the PTP irrigationsystem. UWCD is considering extending the PTP system further south to accommodateadditional users. This tie-in option could be jointly constructed by UWCD and the City.The Nauman Road tie-in would consist of approximately 5,400 linear feet of 16-inchdiameterpipeline and would be located entirely within existing road rights-of-way.Recycled Water Conveyance for Aquifer Storage and RecoveryThe recycled water delivery system also would be used to deliver recycled water from theAWTF to the pilot ASR injection well. As previously discussed, irrigation demands varyseasonally, with winter month demands substantially lower than demands during otherperiods of the year. During periods when demands are low, it would be necessary to reducerecycled water output or develop another use for the recycled water. Since the PleasantValley area and southern Oxnard Plain are subject to the effects of overdraft, includingseawater intrusion, consideration has been given to the use of recycled water forgroundwater injection. Groundwater injection is discussed further in Section 4.3.4,Aquifer Storage and Recovery.To increase cost-effectiveness, the recycled water delivery system used to convey irrigationquality water to agricultural users (approximately 9 months of each year) would also beused to convey a blend of recycled water and potable water to the pilot ASR injection well(approximately 3 months of each year). To allow dual use of this pipeline for differentqualities of water, the recycled water delivery system would cleared of recycled water forW112003002SCO LW1458.DOC/ 033390002 55