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May 19, 2022 <br />46 <br /> <br />4. In order to prevent pollution of any watercourse and to reduce erosion of soil, sediment <br />control devices shall be installed prior to any grading, filling, or excavation. Such devices <br />shall be designed to retain sediment on the site or flowing adjacent to the site. <br />5. Within thirty (30) days after completion of grading, all surfaces disturbed by vegetation <br />removal, grading, haul roads, or other construction activity that alters natural vegetative <br />cover, are to be revegetated to control erosion, unless covered with impervious or other <br />improved surfaces authorized by approved plans. Erosion controls may include any <br />combination of approved engineering or vegetative measures using the North Dakota <br />Department of Transportation (NDDOT) Erosion and Sediment Control Handbook, as it <br />presently exists or may hereafter be amended. <br />6. Within thirty (30) days after completion of grading, all surfaces disturbed by vegetation <br />removal, grading, haul roads, or other construction activity that alters natural vegetative <br />cover, are to be revegetated to control erosion, unless covered with impervious or other <br />improved surfaces authorized by approved plans. Erosion controls may include any <br />combination of approved engineering or vegetative measures using the North Dakota <br />Department of Transportation (NDDOT) Erosion and Sediment Control Handbook, as it <br />presently exists or may hereafter be amended. <br /> <br />