Construction Permitting

1. Who needs to submit the Storm Water Pollution Prevention Plans (SWPPPs)?

City Construction SWPPPs are required for any activity where material is disturbed, stored, disposed of or used as fill within the City of Billings. The requirements for the permit are established by land disturbance size of greater than or equal to one acre. Training opportunities Opens in new window

2. What is the SWPPPs submission process for approval?

Step 1. Before any construction activity, please complete the DEQ’s NOI and SWPPP forms and submit them by email along with the BMP Map to the City for review and approval. Our Environmental Affairs staff will help ensure all forms are completed to DEQ's standard which saves you time in Step 2.

Step 2. Once the City provides approval confirmation, please send NOI, SWPPP, and BMP Map to DEQ per website instructions.

3. What to do if there’s a permit transfer?

Step 1. If there's a permit transfer, please submit a Permit Transfer Notification (PTN-SWC) to City of Billings Environmental Affairs by email.

Step 2. Please submit a Permit Transfer Notification (PTN-SWC) to Montana DEQ. 

4. What to do if dewatering needs to take place?

Step 1. If dewatering may need to take place during construction, please submit the NOI-07 for Construction Dewatering Permit to the City for approval.

Step 2. Please submit the NOI-07 for Construction Dewatering Permit to the DEQ.

5. What to do when construction is completed?

Step 1. When construction is completed to the specific item instructions, please submit a Notice of Termination (NOT-SWC) to the City Environmental Affairs by email.

Step 2. Please submit a Notice of Termination (NOT-SWC) to Montana DEQ.

References & Resources


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  • The EPA defines a BMP as a "technique, measure or structural control that is used for a given set of conditions to manage the quantity and improve the quality of stormwater runoff in the most cost-effective manner.” BMPs are used to control stormwater runoff, sediment control, and soil stabilization, as well as management decisions to prevent or reduce nonpoint source pollution. BMPs are required construction practices for commercial, industrial and residential construction, no matter how big or small the project. Commercial / Residential Construction Stormwater Handbooks are available for your reference.