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used throughout the site to convey material from the active face to the <br />processing equipment. Aggregate stockpiles and accessory equipment <br />will be located throughout the site. <br />Water for the washing activities will be provided from onsite ground <br />water ponds after receiving necessary State approvals. <br />Sedimentation ponds will be constructed adjacent to the washing <br />equipment to allow for settlement of silts and then recycle the washwater <br />back to the plant minimizing the amount of water needed. Washwater <br />will not be discharged off site. The washplant sedimentation ponds will <br />be temporary. When washing operations are complete or as <br />sedimentation ponds begin to fill, the silt will be removed, dried and <br />blended with onsite materials and used for reclamation. <br /> <br /> <br /> <br />1 <br />The following measures will be implemented to protect groundwater <br />quality: <br />• Limited equipment maintenance will be performed on-site <br />and Tiller's spill prevention policies will be followed. <br />• A service truck will come to the site to perform routine <br />maintenance. All used lubricating oil will be collected by facility <br />personnel and hauled off-site to a central collection point (waste <br />oil is not classified as hazardous waste). The service truck will <br />carry a spill containment kit. <br />• Any fuel stored on site will be stored in above ground tanks <br />in accordance with MPCA and local rules. Alternatively, a service <br />truck may be used to fuel equipment as needed. <br /> <br /> <br />n <br /> <br /> <br /> <br /> <br />• A Spill Prevention Control and Counter Measures Plan <br />(SPCC Plan) will be prepared for the site. The plan will document <br />procedures to be followed in the event of a spill or release at the <br />site. Tiller's policy regarding spills is that any spill of oil, gasoline, <br />diesel fuel, or lubricant is to be reported to Tiller's Land Use <br />Coordinator, and cleaned up promptly. Any spills of 5 gallons or <br />more of petroleum products or any volume of hazardous materials <br />are reported to the state duty officer as required by applicable <br />state statutes and regulations (Minn. Stat. 299K) <br />• Topping off tanks of any kind is not allowed under company <br />procedures. <br />Tiller Corporation <br />Conditional Use Permit Application <br />August 30, 2010 <br />Page 18 <br />