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<br />d. Re-vegetation of the property shall include seeding with a mixture approved by city staff <br />accompanied by a nurse crop or approved mulch. The vegetation established for the <br />reclamation must be maintained until it is self-sufficient. <br />e. Contours, finished grades, details of erosion control methods, and settling ponds, shall comply <br />with the plans submitted and the City ordinance at the time of reclamation. Additional <br />measures as determined by city staff may be required. <br />10. Traffic: <br />a. Except for localized jobs, traffic through Elk River associated with the Operation shall be <br />limited to U.S. Highway 10 and 169. The Operator will route traffic from the Operation to <br />225th Ave NW west to the Highway 169 interchange as directed by the Minnesota Department <br />of Transportation or the City of Elk River. <br />b. The number of trucks per day is limited to 35 unless prior approval is given by the <br />Environmental Administrator for special cases. <br />c. As deemed necessary by the Minnesota Department of Transportation and the City of Elk <br />River, any required improvements to the highway intersection must be constructed prior to <br />the operation of the HMA. <br />d. As deemed necessary by the City of Elk River, any required improvements to 225th Ave NW <br />must be constructed prior to the operation of the HMA. <br />11. Dust Control: <br />a. A permit from MPCA regarding air emissions shall be obtained when required and particulate <br />emission standards shall be met by the operation. This permit and all other correspondence <br />between the Operator and MPCA shall be copied to the City. <br />b. All equipment shall be located as to reduce dust to adjacent properties. <br />c. A water truck shall be on site at all times when mining activities are taking place to control <br />dust as necessary. Chemicals shall not be used for dust control. <br />d. A minimum of 100 feet must be paved from 225th Ave NW into the pit. <br />e. The City reserves the right to require additional measures to be taken, if warranted by dust <br />problems, including but not limited to reducing stockpile heights. <br />12. All mineral excavation, processing, and sales activities shall be conducted between the normal hours of <br />7:00 a.m. and 7:00 p.m., Monday through Saturday. <br />13. Noise: <br />a. As deemed necessary by city staff, noise from screening and crushing associated with this <br />operation shall be controlled by equipment location on site, the erection of sound barriers, the <br />placement of stockpiles, and the type of equipment used. <br />b. Noise levels associated with this operation shall at no time exceed State standards. <br />c. The City reserves the right to require additional measures be taken, if warranted by noise. <br />14. Lighting from the Operation shall be directed away from adjacent residential property. Glare, whether <br />directed or reflected as different from general illumination, shall not be visible beyond the limits of the <br />immediate site. All sources of artificial light shall be so fixed, directed, designed, or sized that the <br />minimum subtotal of their illumination shall not increase the level of the illumination on nearby <br />residential property by more than .1 foot candles in or within twenty-five (25) feet of a dwelling, or <br />more than 0.5 foot candles on any part of the adjacent property. <br />15. The piling, storing, or keeping of old machinery, junk, debris, or abandoned motor vehicles, shall be <br />prohibited on this site, with the exception that reusable parts may be stored on the mineral <br />excavation site provided that it is in a location that cannot be viewed from adjacent properties or is <br />totally screened. <br />16. Mining activities shall not cause excessive vibration off site. If excessive vibration becomes an issue, <br />the City reserves the right to take appropriate measures to alleviate the problem. <br />17. Groundwater protection measures shall include: <br />Page 11 of 71