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Section 780.21(b) Continued <br />i <br />r 1 <br />U <br /> <br />other roads, parking lots, and other structures will have proper drainage <br />control. The locations of all such facilities are shown on the Energy Mines <br />No. 1 and 2 Mine Plan (Map 1), the Eckman Park Mine Plan (Map 2), the Energy <br />Mines No. 1 and 2 Roads (Map 35), and the Eckman Park Roads (Map 36). The <br />relationship of these facilities to watersheds and other drainage patterns <br />can be determined from the Energy Mines No. 1 and 2 Hydrology (Map 13), <br />Eckman Park Hydrology (Map 14) and Permit Renewal Map 9A Hydrologic <br />Features/Sediment Control. These maps show locations of diversion ditches, <br />bar ditches and culverts, in particular, and the provision for final <br />detention of all runoff from such facilities in sedimentation ponds or other <br />sediment control structures. As part of the maintenance program, all <br />existing and proposed roads and other facilities will be graded frequently <br />and will have associated culverts, drains and ditches periodically cleaned. <br />A detailed discussion and presentation of design criteria, including <br />drainage and sedimentation control, for all roads, other transportation and <br />support facilities and utility installations is set forth in Sections <br />816.150-816.181. <br />Whenever the final land surface is raised as a <br />swelling, surface gradients between disturbed and <br />increase. This increase in gradient can cause <br />stream channels unless certain measures are taken <br />can result in erosion and increased total suspended <br />89-23 <br />780-154(a) <br />result of overburden <br />undisturbed areas may <br />oversteepening in some <br />This oversteepening <br />Revised 02/22/89 <br />