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windrow. Typically, topsoil windrows are small footprint and in some cases are not long-term <br />locations to store topsoil. Some topsoil windrows are eventually moved to the larger topsoil <br />stockpiles during the normal progression of the mining process. Based on years of experience <br />from employing topsoil windrows at Colowyo, the small -incised sumps are not necessary for <br />topsoil windrows and a small ring ditch suffices. <br />Exh. 7-23E-2 Revision Date: 6/19/18 <br />Revision No.: TR -121 <br />