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SITE DESCRIPTION EXHIBIT B (CONT) <br /> usable as topsoil . Lying below this upper layer is a layer of <br /> sandy loam and then a sandy gravel strata that is 20 feet or more <br /> deep. This soil type falls in the capability subclass 3e non- <br /> irrigated and the ecological site classification as Loamy Plains . <br /> On this site the topsoil coverage ranges from 3 to 6 inches <br /> that can and will be salvaged and replaced on the seedbed when <br /> reclamation begins . All topsoil will be salvaged for use during <br /> reclamation and on average will be replaced from 4 to 6 inches <br /> deep on the seedbed. Underlying the topsoil is a 5 to 6 foot <br /> lens of overburden and then a 20 to 25 foot lens of gravelly sand <br /> that will be mined. Some of the overburden will be salvaged for <br /> use as growth medium if needed. The plan is to mine 20+ feet <br /> deep leaving the mine floor with a gentle slope from the toe of <br /> the south excavation slope to the north to facilitate drainage . <br /> As the mine is developed it may be possible to mine deeper. If <br /> than happens the final slopes will be graded as discussed in the <br /> sloping plan. <br /> 5 <br />