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Erica Crosby <br />Division of Minerals and Geology <br />July 16, 2003 <br />Page 2 <br />4. Water Infiltration from Swede Ditch: Please see the updated "On-Site Disposal Cell <br />Map Revision" (enclosed) for the correct locations of the Swede and Smeade Ditches, <br />and a cross section of the north-south topography through the proposed concrete <br />disposal area. The Swede ditch is located on the opposite side of the hogback from the <br />proposed disposal area and therefore will not be a potential source of water infiltration. <br />The Smeade Ditch crosses the proposed disposal area. Cemex proposes to completely <br />enclose or pipe the ditch through the disposal area so that no infiltration will occur. <br />Surface runoff from the area will be directed to a diversion ditch around the disposal <br />area, which will then enter the Smeade Ditch on the east side of the disposal site. <br />Seed Mix: The seed mixes for both dryland pasture and irrigated pasture listed in the <br />1977 permit application are appropriate. Both the dryland pasture and irrigated pasture <br />seed mixes will be obtained from the Arkansas Valley Seed Company. Please <br />disregard the seed mix noted on the previously submitted "On-Site Disposal Cell Map". <br />Please let me know if you need additional information to approve this technical revision. Thank <br />you. <br />Sincerely, <br />~en>~oby ~~~ <br />cc: John Lohr, Cemex, Inc. <br />