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for the water mitigation plan. A slight deficit will exist <br /> for dry years like 1954 and a slight credit will exist for <br /> wet years like 1969. The 4 .45 shares supported the irrigation <br /> water portion of the consumptive use of 18. 3 acres of pasture. <br /> Figure C-12 illustrates the monthlv comparison of the existing <br /> and future net depletions for normal years for the water <br /> mitiqation plan. In the months of November through February, <br /> there will be more depletion (a deficit) for the future <br /> condition, and less depletion (a credit) for the months of <br /> March throuah October. On an annual basis there is a balance, <br /> indicating no net impact. <br /> iGround Water. Dry mining operations will lower water levels <br /> in the immediate vicinity of the excavated area. Based on <br /> an analysis of the alluvial deposits, it is estimated that <br /> the maximum radius of influence from dewaterinct will be 300 <br /> feet. Beyond this distance there will be no appreciable <br /> Oil <br /> effect on the ambient water table from gravel excavation. <br /> Mininq operations will be maintained at distances more than <br /> 300 feet from existing wells and South Boulder Creek to <br /> avoid adverse effects. There are no irrigation wells in the <br /> • vicinity of the project and the few domestic wells that are <br /> near the site are up-gradient and far enough from excavated <br /> J <br /> areas to be beyond the zone of influence. <br /> C-21 <br />