A. Minimize, in area and duration, exposed soil and unstable soil conditions.

B. Minimize disturbance of natural soil cover and vegetation.

C. Protect receiving water bodies, wetlands and storm sewer inlets.

D. Retain sediments from disturbed properties on site.

E. Minimize off-site sediment transport on trucks and equipment.

F. Minimize work in and adjacent to water bodies and wetlands.

G. Maintain stable slopes.

H. Avoid steep slopes and the need for high cuts and fills.

I. Minimize disturbance to the surrounding soils, root systems and trunks of trees adjacent to site activity that are intended to be left standing.

J. Minimize the compaction of site soils.

A. Activity that: (1) disturbs an area of less than 5,000 square feet; and (2) involves the grading, excavating, filling, or storing on site of less than 50 cubic yards of soil or earth material.

B. Routine agricultural activity.

C. Emergency activity immediately necessary to protect life or prevent substantial physical harm to person or property.

D. Activity otherwise subject to this section, where the City has entered into a written agreement with the municipality where the activity takes place providing that the City will not exercise erosion control permitting authority within the City under the circumstances in question.

A. A satisfactory erosion control and grading plan consistent with the City of Mound Surface Water Management Plan (Appendix J and other sections as applicable) and the Minnesota Pollution control Agency’s Best Management practices handbook, "protecting Water Quality in urban areas," as amended, must be approved by the City Engineer before a building permit is issued for construction, if the construction will result in disturbing the soil. To guarantee compliance with the plan, a five hundred dollar cash escrow or letter of credit, satisfactory to the City, shall be furnished the City before a building permit is issued. The maximum escrow required of an individual builder or subdivider, regardless of the number of building permits that have been issued to the builder or subdivider, is five thousand dollars ($5,000.00). The City may use the escrow or draw upon the letter of credit to reimburse the City for any labor or material costs it incurs in securing compliance with the plan or in implementing the plan. If the City draws on the escrow funds, no additional building permits shall be issued until the pre-draw escrow balance has been restored. The City shall endeavor to give notice to the owner or developer before proceeding, but such notice shall not be required in an emergency as determined by the City.

B. For subdivisions, the grading and erosion control plan must be consistent with the approved grading plan for the plat. Areas where the finished slope will be

steeper than three (3) units horizontal to one (1) vertical shall be specifically noted. Also, location of erosion control devices shall be clearly labeled.

C. Every effort shall be made to minimize disturbance of existing ground cover. No grading or filling shall be permitted within forty (40) feet of the ordinary high water mark of a water body unless specifically approved by the City. To minimize the erosion potential of exposed areas, restoration of ground cover shall be provided within five (5) days after completion of the grading operation.  All grading must be completd in a manner to avoid a public nuisance as defined in City Code Chapter 1000.15A (Public Nuisance Affecting Peace and Safety).  Construction and grading that has become a public nuisance is subject to abatement as contained in City Code Chapter 1000.25 (Abatement).  (ORD. 12-2005, 8/7/05)

D. Every effort shall be made during the building permit application process to determine the full extent of erosion control required. However, the City Engineer may require additional controls to correct specific site related problems as normal inspections are performed.

E. All erosion control noted on the approved plan shall be installed prior to the initiation of any site grading. Noncompliance with the grading and erosion control plan shall constitute grounds for an order from the City Engineer to halt all construction.

F. All contraction activity that results in disturbance of the ground shall comply with the Minnesota Pollution control Agency’s Best Management Practices handbook, "Protecting Water Quality in Urban Areas," as amended.

A. Require stormwater facilities to be included in land development projects where practicable and effective.

B. Manage stormwater and snowmelt runoff on a regional or subwatershed basis throughout the City to:

A. Single Family Homes. A permit is not required for the construction or reconstruction of a single-family home or its residential appurtenances.

B. Single-Family, Developed or Redeveloped Subdivision. A permit is not required from the City for construction on less than two (2) acres with a density of two (2) units or less per acre. A permit is required for residential development or redevelopment of subdivisions with a density of two (2) units or less per acre on sites of two (2) acres or more, as follows:

C. Medium Density Residential Land Development. A permit is not required for the development or redevelopment on a site of less than two (2) acres of residential subdivisions with single-family units at a density of more than two (2) units per acre or a multi-unit residential development or redevelopment, at a density of less than eight (8) units per acre. A permit is required for development or redevelopment on a site of two (2) acres or more of residential subdivisions with a density of more than two (2) units per acre or multi-unit residential development or redevelopment at a density of less then eight (8) units per acre, as follows:

D. Commercial, Industrial, or Institutional Development or Redevelopment; Mixed use; High Density Residential Development or Redevelopment. A permit is required for commercial, industrial, institutional or mixed use development or redevelopment, or for multi-unit residential development or redevelopment at a density greater than or equal to eight (8) units per acre, as follows:

E. Roads, Streets, Highways, Sidewalks and Trails. A permit is not required for the maintenance or improvement of a public or private road, street, highway, sidewalk, trail or other linear way not otherwise regulated under paragraphs (a) through (d), if the project does not result in a net increase in impervious surface. A permit is required for a public or private road, street, highway, sidewalk, trail or other linear way that results in a net increase in impervious surface area, as follows:

F. Surety. A performance bond or other surety in a form satisfactory to the City is required for all activity, including clearing, grading, and excavation, that results in the disturbance of five (5) or more acres of land.

G. Common Scheme of Development. In determining stormwater management requirements under this section, development or redevelopment on adjacent sites under common or related ownership shall be considered in the aggregate. The requirements applicable to a development or redevelopment under this section shall be determined with respect to all development that has occurred on the site, or on adjacent sites under common or related ownership, since the date this Section took effect.

H. Additional Development or Redevelopment on Developed Sites. When the impervious area on a site is increased by 50 percent or more, the requirements imposed by this Section will be determined with respect to the site in a pre-development condition. When the impervious area on a site is increased by less than 50 percent, the requirements imposed by this Section will be determined with respect to only the additional impervious surface and site alteration proposed.