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<br />Allen Matkins Leek Gamble & .Mallory LLP <br />attorneys at law <br /> <br />Allen Matkins <br /> <br />501 West Broadway 9th Floor San Diego California 92101-3577 <br />telephone. 619 233 1155 facsimile. 619 233 1158 www.allenmatkins.com <br /> <br />to. Interested Persons <br /> <br />memorandum <br /> <br />writer. David L. Osias <br />t. 619 235 1526 e. dosias@allenmatkins.com <br />file number. 14161-o02/SD579601.01 <br /> <br />date. May 29 2003 <br />subject. Compatibility of QSA/ECSA with Salton <br />Sea Restoration/Desalination Project <br /> <br />The terms of the proposed March 2003 QSA and Related Agreements do not preclude a <br />Salton Sea restoration project that involves a reduced-in-size Salton Sea and a desalination <br />project relying on drain flow from Imperial Irrigation District. Assuming that restoration and <br />desalination are feasible and environmentally permittable, three aspects are addressed: (1) would <br />the QSA eliminate the necessary source of drain flow to a desalination project? (2) would the <br />QSA eliminate the need for the desalinated water produced? and (3) does the language of the <br />QSA or ECSA preclude a "smaller" Salton Sea restoration project coupled with a desalination <br />project? . <br /> <br />The QSA Would Not Eliminate the Necessary Source of Drain Flow <br /> <br />lID currently is the source of approximately 1 to 1.1 MAP per year of inflow to the <br />Salton Sea. After a gradual ramp up in efficiency conservation under the QSA, IID will be <br />conserving and eliminating303 KAF per year of Salton Sea Inflow.. Thus, well over 600 KAF <br />per year of drain flow will remain available as a feeder source for a desalination project. <br /> <br />The QSA Would Not Eliminate the Need For The Desalinated Water <br /> <br />The QSA does not result in the satisfaction of all of Southern California's urban water <br />needs. Setting aside the rapid urban growth within the Desert Water Agency and Coachella <br />Valley Water District that will create a demand base for desalinated water at urban rates, coastal <br />Southern California will also need the desalinated water, even after the QSA transfers are <br />implemented. For example, by the time a desalination project is fully built and operational, it is <br />likely that Interim Surplus Guidelines "surplus" will no longer be available. Thus, the Colorado <br />River Aqueduct would have the following available capacity to transport the desalted water. <br /> <br />I San Diego Century City Los Angeles Orange County San Francisco <br />