Managing Stormwater to minimize groundwater contaminant

1. Managing Stormwater to Minimize
Groundwater Contaminant Migration
2017 APWA FLORIDA CHAPTER EXPO
JOHN LOCKLEAR, P.G.

2. PRESENTATION
GOALS

3. Goal #1
Evaluate potential environmental
risks associated with industrial
activities and stormwater
management.

4. Goal #2
Identify alternative approaches to
stormwater management that
minimize contaminant migration.

5. Goal #3
Develop a multi-agency permitting
approach and public information
campaign.

6. ENVIRONMENTAL
RISKS

7. • Spills
• Leaks
• Runoff
• Erosion &
Sedimentation
COMMON RISKS

8. • Groundwater to Surface
water interaction
• Impacts to site
geochemistry
• Influence on
groundwater flow
UNCOMMON
RISKS

9. Case Study

10. Case Study

11. Case Study

12. Case Study

13. Case Study

14. Case Study

15. ALTERNATIVE
STORMWATER
DESIGN
CONSIDERATIONS

16. • Identify potential
contaminant sources
• Minimize
groundwater/surface water
interaction
• Create hydraulic barriers if
necessary
• Consider impacts to site
geochemistry
DESIGN
CONSIDERATIONS

17. Case Study

18. Case Study

19. Case Study

20. PERMITTING AND
STAKEHOLDER INPUT

21. Site
FDEP
FDOT
WMDCounty
Public

22. • Conflicting regulatory
reviews
• Lengthy permitting
period
• Public opposition
POTENTIAL
CHALLENGES

23. • Bring all stakeholders
together at the start
• Agree upon a lead agency
• Schedule systematic
technical reviews
• Identify public concerns and
clearly communicate
anticipated project
outcomes
• Provide regular updates to
all stakeholders and the
public
KEYS TO SUCCESS

24. Questions?
John Locklear, P.G.
john@locklearconsulting.com