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production which would result from irrigation, it is not an appropriate success <br />standard. The following stipulation is required. <br />~ipulation No. 27 <br />NO IATEA THAN OCTOBER 1, 1997, THE OPERATOR WILL SUBMIT AN AMENDED IRRIGATED <br />HAYI/UJD PRODUCTION STANDARD REFI.ECrIVE IF THE POTENTIAL PRODUCTION UNDER IRRIGATED <br />CONDITIONS FOR THE AFFEC"TED SOIL TYPES IN A NORMAL YEAR, ASSUMING PRUDFIJT MANAGEMEM' <br />CONSISTENC Wn'H REGIONAL PRACIICPS. THE STANDARD WILL BE SUPPORTED BY NRCS SO1L <br />SURVEY INFORMATION, OR COMPARABLE TECHMCAL DOCUMENTATION. <br />ALTERNATIVELY, A REFERENCE OR COMPARISON AREA MAY BE ESTABLISHED ON ADJACENT <br />IRRIGATED HAYLAND$ UPON DEMONSTRATION THAT THE ADJACENT LANDS ARE COMPARABLE TO <br />THE AFFECTED ARNA WITH RESPECT' TO SOiL TYPE AND CROP SPECIES, AND THAT PRUDENT <br />MANAGEMENT' CONSISTENT WITH REGIONAL PRACrICPS WOULD BE APPLIED TO THE ADJACENT <br />LANDS THROUGHOUT THE LIABILI"IY PERIOD. <br />VII. Protection of Fish, Wildlife and Related Environmental Values <br />A. Fish and wildlife habitat is a planned post-mining land use for a portion of the <br />reclaimed area. The applicant has selected appropriate plant species and <br />distributions to benefit fish and wildlife (4.18(5)(1)). <br />VIII. Subsidence Control <br />A. The applicant has proposed a subsidence control plan in accordance with Rule <br />2.05.6(6) and has committed to adopt all measures in order to reduce the <br />likelihood of subsidence, prevent material damage, or mitigate the effects. Since <br />mining did not occur, no material damage to the existing resource lands has <br />occurred and is not expected to occur, therefore a subsidence monitoring <br />program is not required. <br />IX. Operations on Alluvial Valley Floors <br />Information on alluvial valley floors is contained in Section 5.1 of Volume I and <br />figures 5.1-1, 5.1-2, and 5.2-2 of the application. <br />The applicant identified unconsolidated streamlaid deposits along the Colorado <br />River, Alkali Creek, and South Canyon Creek. South Canyon Creek is not <br />hydrologically adjacent to the proposed mine for this permit term; therefore, it will <br />not be considered in this alluvial valley floor (AVF) determination. Alkali Creek <br />and the Colorado River will be discussed separately below. <br />Alkali Creek <br />Only a small portion of the proposed permit area is within the Alkali Creek drainage <br />Coal Ridge No. 1 Mine 17 Permit Renewal No. 3 <br />