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4.4. Post Mine Hydrologic Balance <br />Precipitation amounts are expected to be similar topre-mine conditions after mining. The post-mining <br />evapotranspiration rate is similar to the pre-mine values as vegetation is now re-established. <br />If recharge to the spoils is larger than pre-mine values, direct surface runoff will be reduced <br />subsequent to mining. A larger net groundwater discharge to the surface system is likely in areas <br />where spoil springs have developed. These discharges should offset a decrease in direct surface <br />runoff from the reclaimed surfaces. The larger amount of groundwater discharge to springs has <br />increased the water availability for wildlife and livestock in the area for a greater portion of the year. <br />4.5. Sediment Loss Evaluation <br />A SEDCAD+ evaluation of sediment production and yield in the approved SL-01 Phase II bond release <br />document demonstrated that current reclamation conditions will result in equivalent or lesser sediment <br />contributions to surface runoff when compared with pre-mining levels. <br />• 5.0 Proposed Reduction in Bond Obligation <br />Trapper proposes a reduction of $82,659 in the amount of our bond obligation as a result of this phase <br />III bond release request. The requested dollar amount represents the money bonded against <br />reseeding for failure of the reclaimed croplands and rangelands proposed herein for final bond release. <br />The bond amount requested for release is detailed in Table 5-1. Trapper does not intend to request a <br />new bond rider to actually release the dollars under consideration but rather would leave the money in <br />the surety bond as a buffer against future bond obligations. <br />• <br />