GP3-9010

5. Vermont Operational Post-Construction Stormwater Discharge Permitting Program (GP 3-9010, GP 3-9015, or INDIVIDUAL)

Discharges of stormwater runoff from new, expanded or redeveloped impervious surfaces are regulated pursuant to 10 V.S.A. Sections 1264 and 1264a, the Stormwater Management Rule, and the Stormwater Management Rule for Stormwater-Impaired Waters. When proposed new, expanded or redevelopment of impervious surfaces reaches the permit thresholds set out in rule, discharges of regulated stormwater runoff from these impervious surfaces must obtain permit coverage consistent with the treatment and control standards in the Vermont Stormwater Management Manual (Manual). Visit Vermont Department of Environmental Conservation (Vermont DEC) web site for permit coverage, inspection and reporting requirements, as well as to locate existing stormwater permits.

For VTrans, coverage under these permitting programs is required early in the design development process for projects that trigger jurisdiction. During the project scoping, design development and permitting, and construction processes, the VTrans Operations Division is involved and called on to review and to provide input on design plans and stormwater permitting processes under the VTrans Project Post-Construction (Operational) Stormwater Protocol. This document (compiled with input from all relevant affected sections) is intended to be used to facilitate typical Program Development Division (PDD) projects’ stormwater processes during the various stages of project development and including maintenance.

Once a project has been constructed and accepted by Operations, the Operations Environmental Coordinator (OEC) assumes responsibility for managing compliance with all stormwater permits and involves the Districts to perform routine maintenance, inspection, and reporting to the Vermont DEC.

In addition, VTrans has put the following measures in place:

VTrans PDD Environmental Section Stormwater Engineer

The VTrans Program Development Stormwater Management Engineer’s primary duty is to provide engineering support on the design, permitting, and retrofitting of VTrans stormwater management systems. The tasks related to this duty include but are not be limited to:

  • Assist VTrans project managers, designers, and others with Stormwater management system engineering;
  • Review stormwater management system plans of projects that have been developed both in house and by consultants as part of the environmental permitting process;
  • Design stormwater management systems for VTrans projects;
  • Assist in VTrans compliance with state issued General Permit 3-9010, General Permit 3-9015, National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) General Permit, and other permits that involve long-term stormwater management; and
  • Assist VTrans on changes in design and treatment needs for long-term stormwater management systems.

Title 19 Section 1111 Utilities and Access Permits

VTrans is using the existing VTrans Access Management Program, Highway Permits, and Development Agreements (Title 19 Section 1111 Permit) to manage post-construction stormwater activities of non-VTrans Projects that need access to our right-of-way. The Section 1111 Permit Standard Conditions was updated during the 2003-2008 Permit Term and resulted in the writing and adoption of Stormwater Conditions for all VTrans Access Permits. These conditions improve VTrans’ control over discharge into the VTrans MS4s of stormwater generated by non-VTrans property owners. Implementation has occurred Statewide. The condition also better informs the applicants and others of the responsibilities and requirements for managing stormwater.

VTrans also uses the Section 1111 Permit process to ensure that there is no increase in peak discharge at the design storm event from pre- to post-construction conditions prior to issuing the Section 1111.

VTrans Construction Environmental Engineers

VTrans uses its Construction Environmental Engineer (CEE) and Assistant Construction Environmental Engineer (ACEE) Positions and Stormwater Engineer Position to ensure compliance. While on-site or traveling through the State, they are in a position to report suspect activity in or near VTrans right-of-way for enforcement or suggest corrective action on the spot.

District Maintenance Education, Training and Participation

VTrans Maintenance District personnel responsible for the State Highways are educated on the importance of identifying suspect stormwater flowing into the State’s right-of-way. This stormwater may originate from non-VTrans property, causing a nuisance by discharging increased volume and velocity of stormwater runoff into the VTrans Stormwater Management System.