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31. Substitute water supply plans may Lie revoked or modfied at any time should it <br />be determined that injury to other vested water rights has occured 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 deck and recorder. <br />32. The duration of the substitute water supply plan will be evaluated case-by~ase <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 tern and conditions of mining by the Division of Minerals and <br />Geology, the senior water rights irrrpaded, the source and reliability of replacement <br />water, the operating history of the applicant, and any other criteria which affeds the <br />operational viabil'dy of the plan. <br />33. AB 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 wiY be required within three (3) <br />years of the date mining is completed in such operations unless spedfic 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 Berk and recorder and <br />be a binding document with the title to the properly. <br />35. A data base for gravel mining operations is rrrairnained at the State Engineers <br />Office. This data base includes information about the mining operation including, but <br />not limited to, applicanrt, Division of Minerals and Geoogy 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 ftve years and will be sut>lect 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 it'/day/ft2 (1x 10s cm'/cm~/sec) <br />muRiplied by the length of the perimeter wall in feet multiplied by the average vertical <br />