View File - Development Services - City of Oxnard

WATER RESOURCES TECHNICAL REPORTmonitoring wells would likely need to be constructed; though some existing water supplywells may be used. Recycled water would be conveyed to the ASR wells via the RecycledWater Delivery System along Hueneme Road and a new ASR well Conveyance Pipelineconstructed along Pacific Coast Highway. Individual Coastal ASR Well Laterals would beconstructed from the main conveyance pipelines to distribute water to each well. The exactlocations for these facilities will be determined during Phase 2 final design.Inland Recycled Water ASR. An inland ASR well system would involve use of several ASRwells distributed in inland areas. The inland recycled water ASR system would takeadvantage of existing infrastructure such as the PTP irrigation system and associated fiveLAS supply wells, which are agricultural wells used for nonpotable purposes. The PTPirrigation system would be used to carry recharge water to the five LAS supply wells thatcould be used as ASR wells. Other existing supply wells could be used for monitoring.Existing PTP wells are shown in Figure 4-6. Additional conveyance facilities, ASR wells, andmonitoring wells may be required to supplement existing infrastructure. If required, theseelements would be further defined and analyzed in future environmental documentation.Use of the PTP for ASR would need to be coordinated with its current use of conveyingirrigation water and its planned future additional use to convey recycled water for cropirrigation. The recharge water to be used for ASR would be of a higher quality thanirrigation water to meet DHS requirements for direct injection of recycled water.4.4.5 Concentrate Collection SystemA concentrate collection system separate from the City sanitary and stormwater collectionsystem would be constructed to avoid increasing the salinity of the influent wastewater tothe Oxnard WWTP. The concentrate collection system would consist of approximately57,000 linear feet of gravity collection piping ranging from 6 inches to 54 inches in diameter(depending upon the number of concentrate dischargers), constructed to serve the regionaldesalter, the advanced water treatment facility, and various industrial facilities along thealignment. The concentrate collection system is shown in Figure 4-3. The main pipelinealignment would begin at the City of Oxnard Water Yard and continue east along ThirdStreet to Rose Avenue, then south along Rose Avenue to Pleasant Valley Road. Thealignment would continue southwest along Pleasant Valley Road to the edge of theOxnard City limits and then south along city limits to Hueneme Road (paralleling theexisting Oxnard-Hueneme Pipeline). The alignment would travel west along HuenemeRoad to Perkins Road, then south along Perkins Road and ultimately end at the OxnardWWTP for direct disposal via the Oxnard WWTP ocean outfall. Laterals off the mainpipeline would be constructed to meet discharge points at specific industrial facilities. Thenorth lateral would branch off the main pipeline alignment along Rose Avenue at FifthStreet and travel east to Rice Avenue, then north along Rice Avenue to the vicinity ofCamino Del Sol. The south lateral would branch off the main pipeline alignment alongHueneme Road at Arcturus Avenue and travel south to West McWane Boulevard, then eastalong West McWane Boulevard to Edison Drive.4.4.6 Regional Desalter ExpansionExpansion of the regional desalter would require expansion of the treatment system. Twonew treatment modules would be added, each with a capacity of 2.5 mgd, and housed in theW112003002SCO LW1458.DOC/ 033390002 64