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GENERAL GUIDELINES FOR ~STITUTE WATER SUPPLY PLAN~R SAND A.. Page 8 of 9 <br />storage volume by a minimum of a 90-day test. Ongoing monitoring of the water balance <br />may also be required as determined by the Division Engineer. The frequency of accounting <br />and monitoring as well as the type and accuracy of the monitoring devices shall be <br />determined after consultation with the Division Engineer. <br />The applicant shall demonstrate that during a 90-day test period the unregulated ground <br />water inflow to the pit does not exceed the Performance Standard. Demonstration of inflows <br />less than the Performance Standard shall be sufficient cause for a determination that the <br />applicant has constructed a lined reservoir and is entitled to store water. If the unregulated <br />ground water inflow to the reservoir exceeds the Performance Standard, the State Engineer <br />shall require the reservoir to be dewatered until satisfactory changes have been made to <br />the liner to conduct another initial liner test. <br />4.0 Water Beset Accounting <br />Monthly accounting shall be required as long as the liner continues to meet the Design <br />Standard. Weekly accounting (or more frequent if required by the Division Engineer) shall <br />be required for liners which do not meet the Design Standard but continue to meet the <br />Performance Standard. Evidence of compliance with the standards shall be established <br />through a mass balance analysis accounting for inflows, outflows, and change in storage. <br />If the State or Division Engineer determines that the ground water inflow (leakage rate) into <br />the reservoir is greater than the Performance Standard, the applicant shall be required to <br />calculate the inflow to or outflow from the reservoir by means of amass-balance analysis <br />on a 48-hour basis, and return to the stream system such inflows to the pit within 48 hours, <br />without such water being used by applicant in any manner. This 48-hour accounting shall <br />only be for the entire period specified under the Liner Failure During Operation Section (see <br />below) and shall not be done permanently. <br />5.0 Liner Failure Durin Operation <br />In the event that the average daily unregulated ground water inflow to the reservoir exceeds <br />the Performance Standard for two consecutive months, as evidenced by accounting (see <br />above), the applicant or their successor and the State Engineer's Office shall begin to <br />consult regarding the probable cause of the unregulated ground water inflow, and the <br />appropriate actions to be taken in response thereto. If the State or Division Engineer and <br />the applicant cannot reach an agreement on the appropriate actions to reduce the <br />unregulated ground water inflow to less than the Pertormance Standard within nine months <br />of the beginning of the consultations, the State or Division Engineer shall provide written <br />notice to the applicant of their determination to correct this problem. The 48-hour <br />accounting shall begin following the two consecutive months that the Performance <br />Standard is exceeded and shall continue until the applicant has demonstrated that the <br />Performance Standard has been met. Applicant shall have two (2) years from the date of <br />such written notice of liner failure to repair the liner to an inflow less than the Performance <br />Standard. If satisfactory repairs are not completed within the two year period, no new water <br />shall be stored in the reservoir until either: 1) the repair is made; 2) the issue is decided by <br />the Water Court under retained jurisdiction, or; 3) the State Engineer's Office otherwise <br />grants permission for storage to continue. The State or Division Engineer may declare the <br />reservoir a well requiring a well permit. <br />http://www.waterstate.co.us/pits.htm 10!6!1999 <br />