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31. Substitute water supply plans may be revoked or modified at any time should it <br />be determined that injury to other vested water rights has occurred or will occur as a <br />result of the plan. A copy of the approved substitute water supply plan must be <br />recorded with the county clerk and recorder. <br />32. The duration of the substitute water supply plan will be evaluated case-by-case <br />by the State Engineer. While mining continues, individual plans may be approved or <br />renewed for extended years. Criteria for approving the plan for extended years <br />include the approved term and conditions of mining by the Division of Minerals and <br />Geology, the senior water rights impacted, the source and reliability of replacement <br />water, the operating history of the applicant, and any other criteria which affects the <br />operational viability of the plan. <br />33. All gravel mining operations that result in a permanent free water surface (i.e., <br />exposed ground water) will be required to obtain a court decreed augmentation plan, <br />and a decree for a permanent augmentation plan will be required within three (3) <br />years of the date mining is completed in such operations unless specific reasons <br />warrant an extension. <br />34. Before any plan is approved, an agreement must be obtained between the State <br />Engineer and the operator (or landowner, whoever is the responsible party) and their <br />successors who are responsible for the operation and continuance of the substitute <br />water supply plan and any future augmentation requirements after mining is <br />completed. This agreement must be recorded with the county clerk and recorder and <br />be a binding document with the title to the property. <br />35. A data base for gravel mining operations is maintained at the State Engineer's <br />Office. This data base includes information about the mining operation including, but <br />not limited to, applicant, Division of Minerals and Geology status, mine name and <br />location, well permit status, substitute water supply plan and augmentation plan <br />status, and field inspections. <br />36. These guidelines are conditional for five years and will be subject to <br />reevaluation. <br />STATE ENGINEER GUIDELINES FOR LINING <br />CRITERIA FOR GRAVEL PITS <br />AUGUST 1999 <br />1.0 Design Standard <br />The intent of the reservoir lining design is to achieve ground water inflow (leakage <br />rate) into the reservoir that is not greater than 0.03 ft3/day/ftz (1 x 10"5 cm3/cm2/sec) <br />multiplied by the length of the perimeter wall in feet multiplied by the average vertical