Construction permit holders must prevent all mud, dirt, rock, sand, and debris from being spilled or dragged onto streets and rights-of-way outside the construction site. This includes proper set-up of temporary construction site access (see STD-408) and construction site cleanup and right-of-way protection (see Admin Rule 414).
Any construction work where the grade of the lot or parcel is altered more than three feet requires a Grading, Drainage and Erosion Permit to be submitted to City of Missoula Development Services for review. This is dictated by Ordinance 3580's MMC 13.26, MMC 13.27, and MMC 15.65. Exclusions may apply where the site's original slope is less than 5%. Grading, drainage, and hillside standards for slopes greater than 5% are listed in the Residential Site Plan and Commercial Site Plan checklists. If you require assistance contact Development Services at 406-552-6635. Additionally, all owners and operators must be aware of all underground utilities prior to digging. For utility locates call 811.
Any construction activity that results in disturbance of one acre or greater total land area requires additional permit coverage. This total disturbance may include any clearing, excavating, grading, stockpiling earth materials, placement or removal of earth material performed during the construction project. If so, the construction activity’s owner or operator is required to follow the below steps:
Active construction sites within the City of Missoula can be viewed on the road report map. If you find an active construction site not on this map, please contact Development Services' Permit Review Supervisor or call 406-552-6349.
If you have construction project complaints or suspect illicit discharge, . To reach the general spill hotline during business hours call 406-258-4890, or, for after hours dispatch call 911. Missoula County's MVWQD responds to all illicit discharge complaints.