The Water Quality Unit includes regulatory oversight and technical assistance associated with stormwater permitting and management on VTrans facilities, striving to ensure proper design, construction, operation, maintenance, and regulatory compliance with Federal and State Water Quality Standards and Stormwater Management Rules, Regulations, and Laws.
Transportation Separate Storm Sewer System (TS4) General Permit
The Water Quality Unit oversees compliance on the Transportation Separate Storm Sewer System (TS4) Permit. The TS4 permit (effective 11/29/2017) is an all-encompassing permit for the Vermont Agency of Transportation that regulates stormwater discharges from VTrans road and non-road developed lands. It is specific to the unique linear nature of VTrans' infrastructure and allows several stormwater programs to be rolled into one comprehensive regulatory program.
For more information visit the VT Agency of Natural Resource's TS4 page:
Water Quality Unit Collaborations
Lake Champlain Basin Program
Clean Water Advisory Committee
Memphremagog Watershed Collaborative
For additional information regarding VTrans Stormwater considerations in project design and development see the Highway Division’s Stormwater Management page.
The Water Quality Unit is managed by Jennifer Callahan, Stormwater Technician, who oversees 3 regional stormwater technicians. For contact information and regional coverage see the “Regional Stormwater Technician Coverage Map"
Jennifer Callahan, Stormwater Technician
Technical Services | District Maintenance & Fleet
Vermont Agency of Transportation
Dill Bldg, 2178 Airport Road – Unit A, Barre, VT 05641
802-498-4947 cell | firstname.lastname@example.org