1. Future of the Construction and Post Construction Water Quality Program
Greenville County, SC Land Development Division NPDES MS4 Permit Implementation Construction/Post Construction Program
K.F. Holbrook, PE Woolpert, Inc.
Stormwater Management in Greenville County
May 30, 2007
Furman University, Greenville, SC
Construction Site Runoff

2. In the Beginning (1994)
Simple Program
Followed State Law and Regulations
Peak rate control
Velocity control
Sediment control
Program operated by the SWCD

3. Program Evolution
In 2000 Greenville County issued MS4 Storm Water Permit
Ordinance revised to include authorities for implementation
Program audit to set baseline performance
Automated permit tracking system implemented
Computerized field inspection systems implemented
EPA evaluation of the MS4 program
Flood protection projects initiated
Program reorganized into Public Works
Second cycle NPDES permit effective July 2007
TMDL’s developed for Enoree and Reedy
Ordinance revisions required
Cites become co-permittees

9. Process Project Application logged upon receipt
Assigned to Plan Review
Plan Review conducted comments provided
For Subdivisions three iterations before permit
For Commercial two iterations before permit
Preconstruction meeting prior to issuing permit
SCDHEC approval for NPDES required
Permit issued
Plans and Documents handed off to the inspectors for follow up
Site inspections for compliance begin
Each site is inspected once every two weeks
Upon final stabilization project is closed and CO issued

10. GREENVILLE COUNTY STORMWATER PROGRAM
YEAR
# APPLICATIONS
# PROJECTS
# INSPECTIONS
2003
303
169
955
2004
311
175
2575
2005
305
155
3147
2006
322
114
2030
YEARLY AVERAGE
310
153
2117

13. PROJECTS BY DISTURBED AREA
Acres
374
Acres 84
Acres 67
15 Acres and larger 96
TOTAL PROJECT AREA
25,792 ACRES
TOTAL REPORTED DISTURBED AREA
5,068 ACRES

14. More Stats
YEAR
# COMPLAINTS
2004 69
2005
132
2006 66

15. What is in the Future
Staff analysis and assessment for meeting program needs
New enforcement procedure
Improved complaint management
Improved permit and inspection tracking
Third party inspection requirements
New application/inspection fee structure
Implementation of TMDL requirements
New ordinance revisions for water quality
Credit policy modifications for enhanced maintenance
Updated design manual
Design tool development
BMP development

16. Greenville County Storm Water Management Design Manual

17. Question/Comments
Construction Site Runoff

18. Field Protocol 2 Field Auditors
Traversed entire site using the original erosion control plans as a guide
Collect Data on Rugged Pentop Computers
Store data in database specifically design for field review
Digital Pictures of Site and BMPs
Construction Site Runoff

19. Sediment Basins
Construction Site Runoff

20. Sediment Basins
Construction Site Runoff

21. Basin Outlet Structures
Construction Site Runoff

22. Basin Outlet Structures
Construction Site Runoff

23. Temporary Sediment Traps
Construction Site Runoff

24. Silt Fence
Construction Site Runoff

25. Rock Ditch Checks
Construction Site Runoff

26. Riprap or Aggregate
Construction Site Runoff

27. Outlet Protection
Construction Site Runoff

28. Stabilized Construction Entrance
Construction Site Runoff

29. Storm Drain Inlet Protection
Construction Site Runoff

30. Pipe Slope Drains
Construction Site Runoff

31. Runoff Control Measures
Construction Site Runoff

32. Straw and Hay Bale Applications
Construction Site Runoff