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Several hazardous materials will be stored and used onsite throughout the project. These <br />materials include products which are associated with diesel motors, and products associated with <br />asphalt and concrete production. <br />4. Topsoil and Overburden Handling <br />Topsoil ranges from 6 to 18 inches thick on site, 12 inches is the anticipated average. Up to 20 feet <br />of overburden can be found on site, but most is expected to be around 8 feet thick. Both topsoil <br />and overburden are used on site for reclamation of mined out areas. In the event that United needs <br />to store topsoil or overburden in a berm, it will store this material either within the foot print of the <br />current pit, or in the designated topsoil stockpile storage area near the south end of Pit 1. Any <br />topsoil or overburden stockpile that is to be in place longer than 180 days will be vegetated to <br />prevent wind erosion. Anticipated topsoil and overburden quantities are shown in Table D-2. These <br />are estimates based on site drilling and existing operations. <br />Table D-2 Estimated Topsoil and Overburden Quantities <br />Pit <br />Overburden Quantity <br />Topsoil Quantity <br />1 <br />330,400 CY <br />41,300 CY <br />2 <br />139,800 CY <br />17,400 CY <br />3 <br />563,400 CY <br />70,400 CY <br />Total <br />1,033,600 CY <br />129,100 CY <br />5. Water Information, Rights and Augmentation <br />All water rights issues such as availability of water for this operation, consumption rates, dust <br />control, etc. is presented in Exhibit G - Water Information. <br />6. Schedule of Operations <br />Mining operations will only occur as dictated by demand up to the maximum rates described <br />earlier in the mine plan. Mining, screening and processing will be conducted with portable <br />equipment at various times of the year. Product will be sold from this activity throughout the <br />year, although little is expected to be sold in winter months. The operator will not have night <br />gravel mining operations, although minor truck activity or repairs may occur after hours. Mining, <br />Tri County Pit Sept 2016 D-6 <br />