Permitting & Other Requirements

Pre-Construction Permitting

SD1 requires developers and engineers to apply for different permits, depending on the type of project, before beginning construction work. This helps manage storm water runoff and control erosion issues that can damage downstream property and infrastructure and pollute rivers and streams. Read more about the different permit requirements in SD1’s Storm Water Rules and Regulations, or download applications for each of the permits by viewing the items listed in the following documents.

The Clearing Permit Application, Grading Permit Application and Land Disturbance Permit Application have all been combined into one application, available at

Related Documents

Post-Construction Requirements

New development adds hard surfaces, like roads, roofs and parking lots, to the landscape that limit the amount of rainfall or snowmelt that can soak into the ground. As a result, these impervious surfaces can contribute to storm water runoff that can carry pollutants to rivers and creeks and increase the risk of flooding and erosion on nearby properties.

To limit these negative impacts, developers and engineers are required to include storm water controls in their construction plans. Learn more about the best management practices (BMPs) developers and engineers can choose from to control storm water in SD1’s Storm Water BMP Manual (PDF).

Once built, long-term post construction storm water BMPs (e.g., detention or retention basins) must be maintained to ensure they continue to work properly. As a result, SD1 requires long-term maintenance agreements for post-construction BMPs. These storm water facility maintenance agreements (PDF) must be submitted with the land disturbance permit application for approval. Download the BMP representative contact information form (PDF) to update the post-construction contact information.

Credits, Off-Site Mitigation & Impact Payments

SD1 offers credits on storm water bills to businesses that reduce the impact of development on the storm water sewer system and the water quality in local streams. Learn more in the Storm Water Credit Policy (PDF).

Sometimes construction sites restrict what post-construction BMPs developers can use. In other cases, the benefits of a storm water control may be more beneficial if installed off-site. As a result, developers can choose to meet post-construction storm water control requirements by providing off-site mitigation. When this is not possible, developers may instead be eligible to provide a payment so SD1 can mitigate the development’s impact in another way. Learn more in SD1’s Off-Site Mitigation Policy for Post-Construction Water Quality (PDF).