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<br />December 12, 2005 <br />Page 6 of 15 <br />Working Draft for Discussion <br /> <br />. <br /> <br />Proposed guidelines for ICS, a revision to the ISG, are based on principles that <br />protect and benefit Colorado River system supplies for all states. <br /> <br />1. Provide System Benefit. The amount of the ICS should be less than the <br />total quantity of water that is added to Lake Mead to ensure that there is <br />increased security for the system water users by increasing system <br />contents. The benefit to the system may be implemented in several ways, <br />including a reduction of the recoverable amount from the credits received, <br />and loss of water during spill. <br /> <br />2. Credit Losses. Annual evaporation losses would be calculated and <br />subtracted from the credits to protect the system and determine in part the <br />overall recoverable amount oflCS. The method for determination of <br />losses is [to be determined]. <br /> <br />. <br /> <br />3. Verify Supply Augmentation. The quantity of water supply augmentation <br />that would qualify as credits for recovery as ICS must be verifiable and <br />approved in a manner supervised by the states. The criteria and process <br />for verification and approval would be described in the forbearance <br />agreements or in the revised and expanded guidelines. Secretary approval <br />of the verification may be required. Some form of oversight by the Lower <br />Division States and/or the Bureau of Reclamation (Reclamation) would <br />need to be developed, similar to the committee consultation process used <br />to verify the water use reductions for the Inadvertent Overrun and Payback <br />Policy (IOPP). <br /> <br />. <br /> <br />6 <br /> <br />