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<br />' EXHIBIT D (Cont'd) <br /> MPM plans to set back from the right-of-way another 25 feet <br /> on each side. In addition, between 10 feet and 40 feet, <br />' depending on the depth to be mined, will be added as grade- <br /> back area before the mining line is reached. (For more <br />' detail on this unmined area, see page 11 of this Exhibit D.) <br /> After each stage of mining is complete, the area left for <br /> grade-back will be used for a 3 to 1 slope from the setback <br /> to the bottom of the lake. These setbacks and slopes will <br /> <br /> protect the pipeline from damage. Vehicular access to the <br />' right-of-way will be maintained. <br /> The pit will be operated year-round by MPnf as a specifica- <br />' tion aggregate supply for its own offsite plants and as an <br /> aggregate supply for others. As operations begin on each <br /> t <br />th <br />il <br />d <br />b <br />d <br />ill b <br />d <br />t <br />d <br /> s <br />age, <br />e so <br />s an <br />over <br />ur <br />en w <br />e remove <br />, segrega <br />e <br /> and stored for future use in seedbed preparation and for back- <br /> fill and grading. Part of the first stage was stripped by a <br />' previous operator. <br /> Overburden varies from zero to seven feet in thickness <br /> (see ma <br />Exhibit C-2) <br />H <br />tifi <br />th <br />t <br />ti <br />f <br />h <br /> p <br />. <br />owever, <br />e s <br />ra <br />ca <br />on o <br />e <br />t <br />' soils is such that at depths below approximately two feet <br /> there are amounts of sands and other fines which are usable <br />' and are in fact necessary in the production of specification <br /> aggregates. Overburden will be moved to and stored on the <br />' setback area bordering each mining stage. <br />' Soils vary in thickness from zero to two feet in a <br /> highly irregular pattern across the affected land. Sand <br /> <br /> 9 <br />II <br />