2015-009 Council Ordinances - Laserfiche WebLink

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a. Includes excavation, filing, or stockpiling of erodible material in excess of 50 cubic yards per acre; and/or b. Involves the laying, repairing, replacing, or enlarging of an underground utility, pipe or other facility, or the disturbance of road ditch, grass swale, or other open channel for a distance of 500 feet or more; or c. Disturbs more than one acre of land or 10,000 square feet if within 300 feet of a lake, stream or wetland and drains towards it; or d. A land disturbing activity, regardless of size, that the city determines is likely to cause an adverse impact to an environmentally sensitive area or other property. 2) Grading, erosion and sediment control plan design standards. Grading, erosion and sediment control plans must comply with the following criteria: a. All plans shall be consistent with National Pollutant Discharge Elimination permit (NPDES) requirements, the Lino Lakes engineering design standards, the Lino Lakes stormwater detail plates, and the filing or approval requirements of Rice Creek Watershed District, Vadnais Lakes Watershed Management Organization, Anoka County, Minnesota Department of Natural Resources, Minnesota Department of Transportation, Minnesota Pollution Control Agency, U.S. Army Corps of Engineers, State of Minnesota Stormwater Manual or other regulatory agencies. b. Natural site topography and soil conditions must be specifically addressed to reduce erosion and sedimentation during construction and after project completion. c. Site erosion and sediment control practices must be consistent with the Minnesota Pollution Control Agency document Protecting Water Quality in Urban Areas (2000), as amended, City -specific written design guidance, and be sufficient to retain sediment on-site. d. The project must be phased as best possible to minimize disturbed areas and removal of existing vegetation until necessary for project progress. e. The city may require additional erosion and sediment control measures on areas with a continuous slope leading to a sensitive, impaired or special water body, stream, ditch or wetland to assure retention of sediment on site. f. When site restrictions do not allow for a temporary sediment basin or less than the required acreage is being developed, temporary sediment basins, where appropriate, are encouraged. They are not required in areas with steep slopes, highly erodible soils, or to take equivalent measures such as smaller basins, check dams, and vegetated buffer strips. g. The plan must include conditions adequate to protect facilities to be used for post - construction stormwater infiltration. DRAFT ORD 09-15 CHAPTER 1011STORMWATER & ESC ORDINANCE.DOCX 10/29