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Nuvemco acknowledges QA/QC requirements and will submit engineer certified as -built <br />drawings of all stormwater structures within thirty (30) days of construction. <br />(18) Wildlife Protection <br />Please describe what "approved fences" for ponds are. Please note any wildlife restrictions <br />placed on the site by BLM. <br />As described on page 8 of the Storm Water Management Plan, detention ponds will be <br />surrounded by 8 -foot tall fence with a 4 inch x 4 inch square grid design for wildlife protection. <br />(19) Disposal of mine tailing and sludge in mine <br />This section also refers to detention pond sedimentation and ore pile areas. Please note that <br />ore storage areas must either be lined or have natural impervious layers underneath to prevent <br />migration of hazardous constituents. A description of the proposed method of disposal of all <br />possible contaminated materials should be in this section. All reclaimed areas must meet the <br />following criteria: <br />• The concentration of radium -226 or radium -228 in soil may not exceed the <br />background level by more than 5 picocuries per gram (pCi/g) or 0.185 becquerels per <br />gram (Bq /g), averaged over the first 15 centimeters (cm) of soil below the surface; and <br />• The concentration of natural uranium in soil, with no radioactive decay products <br />present may not exceed the background level by more than 30 pCi/g or 1,11 Bq /g, <br />averaged over the top 15 cm of soil below the surface; and 150 pCi/g or 5.55 Bq /g, <br />average concentration at depths greater than 15 cm below the surface, so that no <br />individual member of the public will receive an effective dose equivalent in excess of <br />100 mrem per year or 1 millisievert (mSv) per year. <br />A radiological survey is included as part of the site assessment. Extensive information is <br />provided in regard to proposed drill areas. However, information for the portal and dump <br />areas is insufficient. This is where the greatest potential for environmental impact is however, <br />and the primary focus for reclamation. Please provide a grid survey and map of the 2.26 acres <br />for the mine disturbance area. Provide a mean average from the data collected for <br />background radiation for drill areas and the mine area as this will establish baseline for <br />reclamation compliance. <br />See Section 6.4.5 — Exhibit E, Reclamation Plan. <br />On or before April 28, 2010, Nuvemco will complete a new Surface Background Radiometic <br />Survey to replace the one included as Appendix A. The new survey will cover the 2.5 acres of <br />the mine disturbance area on a grid of approximately 50 ft centers. Grid locations will have GPS <br />coordinates and include gamma radiation cps as measured by a Radiation Solutions RS -125 <br />spectrometer as used in the original survey. The ore loading area survey grid will be on 25 ft <br />centers. This background survey will establish the current average surface radioactivity of the <br />area. <br />16 <br />