Stormwater Engineering

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Important News:

Final Massachusetts Small MS4 General Permit Released

On April 13, 2016, EPA released the Final Massachusetts General Permit for Stormwater Discharges from Small Municipal Separate Storm Sewer Systems (MS4s). This 2016 Final Permit replaces the 2003 Massachusetts General Permit. The Final Permit goes into effect on July 1, 2017, which gives municipalities time to consider how they can most cost-effectively manage the new permit obligations.

To view the Summary of the 2016 General Permit Milestones, click here

For an Overview of the MS4 Permit Program, click here

The U.S. continues to experience climate change, resulting in more intense and frequent precipitation events. Many communities have witnessed an increase in volumes of stormwater runoff, and intensified river, stream and tributary flow rates - aggravating flooding and costing billions of dollars per year.  Additionally, the human footprint on the environment has impacted the quantity of runoff and water quality of stormwater.  

Using a variety of cutting edge hydrologic/hydraulic/pollutant modeling tools, Wright-Pierce has assisted numerous communities in addressing stormwater flooding issues. Many of our projects have focused on streams subject to urban runoff, ponds that have become full of nutrient-laden sediments, and estuaries impacted by non-point source pollution with limited natural tidal turnover.

The EPA established the National Pollutant Discharge Elimination System (NPDES) municipal separate storm sewer system (MS4) program to protect the nation's water resources from polluted stormwater runoff. From inception, Wright-Pierce has been involved in all aspects of the Stormwater Phase II program.

Articles of Interest
Integrated Watershed Nutrient Management details
Adapting to Storms and Flooding details
Minimizing CSOs details
MS4 Stormwater Permit Update details
Stormwater Utilities - Sustainable Funding and Cost Allocation details
Stormwater Management - LID details
MS4 Stormwater Permit details
Rain Gardens details
Low Impact Development details
Stormwater Management Challenges details