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    WET has prepared and implemented storm water permits for construction sites and industrial facilities in every corner of Montana.  Use the summary below to help determine whether your site is in need of our services.


    Montana Pollutant Discharge Elimination System (MPDES) Permit:


    When a construction project disturbs one or more total acres of land, a Montana Department of Environmental Quality (MDEQ) General Permit for Storm Water Discharges Associated with Construction Activity is needed. The goal of the permit is to prohibit the discharge of any pollutant to state surface water as sediment runoff rates from construction sites are 10 to 20 times greater than farm land or forested areas and discharges can affect: aquatic habitats, channel dynamics, and add nutrients and metals to state surface waters.


    MDEQ Multi-Sector General Permit for Storm Water Discharges Associated with Industrial Activities:


    Industrial sites such as landfills, wastewater treatment plants, and mines require storm water permit coverage, which involves submitting a Notice of Intent (NOI) and a Storm Water Pollution Prevention Plan (SWPPP). Industries must comply with both general and sector specific requirements detailed in the permit. WET provides annual training for permittees.