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Chesapeake Bay and Local Waterway Restoration

The Federal Clean Water Act (CWA) was put in place to ensure chemical, physical, and biological integrity of the Nation’s waters. It established requirements for each State to develop programs to address water pollution including: establishment of water quality standards; implementation of water quality monitoring programs; identification and reporting of impaired waters; and establishment of Total Maximum Daily Loads (TMDLs), a tool that sets pollution limits necessary to maintain applicable water quality standards. development of maximum pollutant loads (waste load allocations) that maintain water quality standards, called Total Maximum Daily Load (TMDL) documents. One means for the EPA to enforce these standards is through the National Pollutant Discharge Elimination System program (NPDES), which regulates discharges from point sources. The Maryland Department of the Environment (MDE) is delegated authority to issue NPDES discharge permits within Maryland. SHA is covered under a Municipal Separate Storm Sewer System (MS4) permit. 

The MS4 permit requires MDOT SHA to adhere to Maryland water quality standards for discharges from MDOT SHA storm drain systems within urbanized counties in Maryland (Anne Arundel, Baltimore, Carroll, Cecil, Charles, Frederick, Harford, Howard, Montgomery, Prince George’s and Washington).  It includes a requirement to put practices in place that restore water quality impacts from past roadway construction and meet waste load allocations in TMDLs.  MDOT SHA’s recent focus has been on the Chesapeake Bay TMDL, issued in December 2010.  TMDLs exist for local waters that also must be met.
Click the link above to read the MDOT SHA Impervious Restoration and Consolidated TMDL Implementation Plan, annual reports, MDOT SHA implementation plans available for public review and comment, and other elements required by the MDOT SHA MS4 stormwater discharge permit.
MDOT SHA is utilizing a number of practices to reduce nutrients, sediments, bacteria, trash and PCBs to restore the State’s local waters and the Bay.  Using the interactive map, you can find projects in your area that MDOT SHA is implementing.  These projects will ensure MDOT SHA is complying.  As new TMDLs are issued, new plans will be developed for implementing additional projects.
Click the link above to access MDOT SHA restoration projects near you.  Enter an address into our interactive mapping tool to find out what projects MDOT SHA is planning in the 11 MS4 counties or to explore projects in your neighborhood.
Read descriptions and view photos of the types of projects MDOT SHA is using to reduce pollutants in stormwater runoff and improve water quality in local waterways and the Bay. These practices include changing land uses, reducing pollutant loads on roadways and implementing structural controls and non-structural techniques.
Find out how this Bay Restoration came about, how planting trees improves water quality and much more.
MDOT SHA is committed to providing information to the public about stormwater pollution reduction.  Explore documents and links that detail the benefits of stormwater management and ways you can help  restore Maryland’s waters and the Chesapeake Bay.