Laserfiche WebLink
4.4. Post Mine Hydrologic Balance <br />Precipitation amounts are expected to be similar to pre-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 wildlHe 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 approved SL-1 (recaimed parcels A-A-93, <br />C-C-93, D-B-93, D-C-93), SL-2 (reclaimed parcels A-A-95, A-B-94, D-A-94, D-A-95, D-B-94, D-B-95, <br />H-B-94, H-B-95), SL-3 (reclaimed parcels CR-93, CR-94) and SL-6 (reclaimed parcels A-B-95, A-C- <br />87A, A-C-94, A-C-95, D-C-94, D-C-95) Phase II bond release documents demonstrated that current <br />reclamation conditions will result in equivalent or lesser sediment contributions to surface runoff when <br />compared with pre-mining levels. <br />5.0 Proposed Reduction in Bond Obligation <br />Trapper proposes a reduction of $38,154 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 />7 <br />