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<br />. <br /> <br />(~) <br />Cf) <br />f\:.l <br />0) <br /> <br />. <br /> <br />. <br /> <br />USBRIMWD SALINITY MANAGEMENT STUDY <br />FINAL REPORT <br /> <br />water for roughly four years, If successful, technological and economic advances resulting <br />from this partnership could fundamentally change the salinity issue for Colorado Rive. <br />water and other water sources. <br /> <br />LOCAL EFFORTS TO PROTECT GROUNDWATER AND RECYCLED <br />SUPPLIES <br /> <br />NEED FOR BRINE DISPOSAL <br /> <br />The Santa Ana Watershed Project Authority has demonstrated leadership in developing a <br />regional brine disposal line under a Joint Powers Authority (JPA) arrangement. The Santa <br />Ana Regional Interceptor (SARI) line conveys high salinity municipal wastewater to an ocean <br />outfall. The SARI line helps protect groundwater and recycled water from salt loading. It <br />also provides brine disposal for groundwater desalination plants recovering previously <br />abandoned local groundwater resources, Other JP As could be formed following this model. <br /> <br />USBR is providing valuable financial assistance to water recycling and groundwater desalting <br />projects in Southern California. The USBR, along with other agencies, is studying <br />opportunities to expand recycling in Southern California. A key constraint to water recycling ... <br />is the disposal of brine (see Technical Appendix 8). The USBR study will investigate regional <br />brine disposal facilities for recycling and groundwater desalting projects. <br /> <br />An appraisal-level evaluation was conducted as part of this study to identifY potential brine <br />disposal facilities within the Metropolitan service area, and to provide estimates of capital <br />costs that would be incurred in the construction of these potential facilities (see Technical <br />Appendix 7). The potential brine disposal facilities considered in this evaluation consist of <br />combination inland pipelines and ocean outfalls. <br /> <br />A summary of five potential brine disposal facilities and their respective capital costs is <br />presented in Table 3-5. Only the capital costs associated with the construction of the potential <br />brine disposal pipelines are considered. Operation and Maintenance costs are comparatively <br />negligible, unless pumping stations are included. Required treatment facilities and ocean <br />outfalls are considered to currently exist and are therefore not addressed in this study. <br /> <br />BOOKMAN-EDMONSTON <br />ENGINEERING, INC. 3-21 <br />O:\LOCAlRESIANDYSISAlIN/TY\IUNE98.217SECT3,DOC 07120/9810:59 AM <br /> <br />Section 3 <br />Evaluation of Potential Regional <br />Salinity Management Strategies <br /> <br /> <br /> <br /> <br /> <br />__0""-'" <br /> <br />'- '." <br />