1. Rule 5 and 13 Conversion Impacts
Mary Atkins, PE, CPESC
Wessler Engineering
September 19, 2018

2. IDEM and ACEC Partnership

3. Background
Rule 5
327 IAC 15-5
NPDES general permit by rule for land disturbing activities and construction runoff
Rule 13
327 IAC 15-13
NPDES general permit by rule for Municipal Separate Storm Sewer Systems (MS4s)

4. What is the change?
Convert “permit by rule” to an administratively issued general permit
Developed and issued by IDEM
5 year permit terms

5. Why the change? EPA has mandated the change
Potential conflict with permittees establishing rules.
2003 – last time regulations changed
Update with EPA requirements (Remand Rule)
clarify issues encountered over 15 years
Incorporate implementation feedback

6. How IDEM is starting the process?
IDEM prepared draft language
Approved by EPA
Advisory Group to fine tune language (ACEC involvement and other stakeholders)
Language back to EPA
Permit out for Public notice
Rule making
Final adoption of the permits

7. Permits will be addressed in the following order
Construction site runoff
Municipal Separate Storm Sewer Systems
Industrial stormwater runoff
IDEM is considering release of Construction and MS4 permits at the same time due to overlap and impacts to MS4s

8. Topsoil

9. Natural Buffers

10. Sediment Basins

11. Stormwater Detention

12. Stormwater Quality Treatment

13. Indiana Code Reference

14. Outfall stabilization

15. Construction and domestic waste

16. Stabilization Requirements

17. Stabilization Requirements

18. Concrete Washout - Definition

19. Trained Individual - Definition

20. Written evaluations and documentation
Detailed list of written evaluation report contents.
Corrective actions documentation
Project management log

21. Plan contents and review process
SWP3 contents
Plan review process
Waiver of review was removed

22. NOI submittal Open permits must obtain new coverage
Update activity-based requirements
Design components will not require retrofit

23. Rule 13 to MS4 General Permit
Advisory Committee met August 2018
Next meeting is October
Discussing and providing suggested language changes on draft language

24. QUESTIONS Mary K. Atkins, PE, CPESC Wessler Engineering 317-788-4551