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See the revised Map F-1. <br /> 42. The reclamation plan states that the access road will remain post reclamation but no road is <br /> depicted on the map. <br /> See the revised Map F-1. <br /> Exhibit G—Water Information <br /> 43. Creek names and well numbers need to be depicted on map C-1. <br /> See the revised Map C-1. <br /> 44. Please identify all known aquifers that mining may encounter. <br /> Mining will expose ground water in the alluvial aquifer associated with the Colorado River. <br /> 45. What are the dimensions and capacity of the detention pond?How will it be constructed?Will <br /> a liner be used,how will it be disposed of? <br /> The detention pond will be 2-4 feet deep,excavated from within the native material. Its <br /> purpose is only to create a calm pool location prior to the discharge point to allow for <br /> accurate flow measurement. No liner will be used. Reclamation will consist only of backfilling <br /> with topsoil and overburden,and then revegetation like the rest of the rangeland areas. <br /> 46. How much lower below the pit grade will the de-watering ditches be placed?And how deep is <br /> the dewatering pump anticipated to be placed? <br /> Dewatering ditches and the dewatering pump will be 1-2 feet below the operating floor of the <br /> pit. <br /> 47. Please clarify the sources of water to supply the project water requirements for the mining <br /> operation and reclamation. <br /> Water for dust control and plant operations will either be brought on site by a contractor, or <br /> taken from the exposed ground water during dewatering.If water is used from the <br /> dewatering operations,it will be accounted for in the substitute water supply plan or <br /> augmentation plan that will be in place before exposing ground water. <br /> 48. Please provide the Division with a copy of the approved/application for a National Pollutant <br /> Discharge Elimination System(NPDES)permit. <br /> A discharge permit has not been applied for yet. <br /> 49. How will you monitor to see if the well owned by RTZ Industrial is being affected by <br /> dewatering? <br /> The RTZ Industrial well was abandoned. <br /> 50. A portion of the southern lake appears to be within the 100 yr flood plain.How will the <br /> potential for a 100 yr.flood event be mitigated?The Division recommends that you build <br /> engineered inlet and outlet structures for areas within the 100 yr. flood plain. Otherwise please <br /> demonstrate that no potential hydrologic imbalance will occur. <br /> The closest the southern lake gets to the Colorado River is 200 feet. <br /> Exhibit H—Wildlife Information <br /> 51. Adequate <br /> Noted <br />