GAR 41000 GDO GDOTs MS4 PERMIT s MS4 PERMIT Presented by M. Brad - - PowerPoint PPT Presentation
GAR 41000 GDO GDOTs MS4 PERMIT s MS4 PERMIT Presented by M. Brad McManus, P.E. GDOT Office of Design Policy & Support To The Central Georgia Erosion Control and Stormwater Quality Workshop, 2012 MS4 MS4 Overview: Phase II
MS4 (40CFR122.32).
2012)
measurable goals because of EPA’s guidance
facilities within MS4 areas.
Transportation worked with EPD to develop the MS4 permit.
before MS4. GAR100000 was in effect in 2000. GAR100002 was issued in 2003 and reissued in 2008. The new permit will be issued summer of 2013.
Public Education BMPs:
Public Involvment BMPs:
Illicit Discharge Detection and Elimination BMPs:
illicit discharges
spills
Construction Site Stormwater Runoff Control BMPs:
with the Manual for Erosion and Sediment Control in Georgia
erosion and sedimentation complaints
Permits.
control waste that may cause adverse water quality impacts in accordance with the Construction Activity Permit
requirements
Post‐Construction Stormwater Management BMPs:
for filtering and/or detention
structures designed for filtering and/or detention.
feasibility of inclusion of the post‐construction standards from section 4.2.5.1 during the project design phase.
(LID/GI)
Pollution Prevention/ Good Housekeeping for Municipal‐type Operations BMPs:
municipal‐type activities that have the potential to cause pollutant runoff.
practices.
type operations to prevent pollutant runoff
10% of roadway miles annually
and reducing stormwater pollution from GDOT facilities and activities
to MS4 structures
MS4 does not cover the following areas:
Accomplishments with the Permit
Challenges faced by GDOT
a) Multiple outfalls and watersheds b) Limits in locating facilities (often roadways have to follow existing alignments) c) Business and residents line the rights of way
a) Public notices b) Environmental Document c) R/W procedures d) Review Procedures
Methods used to overcome the challenges (found in the permit)
a) Multiple outfalls and watersheds Infeasibility guidelines were developed for post construction Each outfall examined separately b) Limits in locating facilities Infeasibility based on location such as community and environmental resources Infeasibility based on field conditions such as slope and bedrock c) Business and residents line the rights of way Infeasibility based on possible displacement of a business or resident
Methods used to overcome the challenges (continued)
Exemptions for post construction structures were given to projects that had their environmental document approved before June 30th 2012.
Infeasibility based on project cost (each outfall examined separately).
Other Challenges faced by GDOT
Solution: Hire consultants
Solution: Limit effort to items necessary, spend effort upfront to determine most efficient means and methods to use (research for new BMPs, using existing data in forms of old plans and collaborating with other MS4s on data sharing)
Solution: Walking contracts through the process, working closely with the people in other offices.
Permit is final and the NOI has been approved
modified.
GDOT policy.
construction BMPs, research of BMP effectiveness.
You may find the permit on EPD’s website, on their Watershed Protection Branch Technical Guidance page. Questions?