AN INTRODUCTION TO STORMWATER AND STORMWATER MANAGEMENT Eric H. Livingston Bureau of Watershed Management Florida Dept. of Env. Protection Tallahassee,

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Presentation transcript:

AN INTRODUCTION TO STORMWATER AND STORMWATER MANAGEMENT Eric H. Livingston Bureau of Watershed Management Florida Dept. of Env. Protection Tallahassee, Florida 850/

Solving Water Pollution Problems in the Wakulla Springshed The City of Tallahassee’s Efforts to Reduce Stormwater Pollution Hydrogeology Workshop May 12-13, 2005 John Buss, P.E.

Cost - $110 million. Part of City & County Blue Print 2000 Initiative. 15 New Ponds or Wetlands totaling 50 acres. Removes approximately  2000 lbs N / yr  600 lbs P / yr

Leon County Surface Water Management Activities Theresa B. Heiker, P.E. Stormwater Management Coordinator Leon County Public Works Dept.

Leon County GIS - Hydrography

General  Define the issue: is it water quality at springs or aquatic plant growth  Stormwater perspectives: urban vs. national forest vs. county  Increase ad valorem for NWFWMD  Emphasize that loadings need to be delineated as accurately as possible, and have a good hydrogeological model  TMDLs underway (assimilation capacity of water bodies to minimize water qual. and quant. impacts  First address stormwater entering most vulnerable areas  Continue working with DOT re: stormwater and hydrogeological issues

Higher-level issues  Nutrient balance issue  Need good hydrogeologic model  Point versus non- point infiltration  Influence of National Forest practices  N-P removal technology  Better understanding of clarity problem  Pre=Post volume balance  Relationship between P and geology (i.e., Hawthorn Group)

Higher-level issues  Monitoring  Nutrient balance in sinkhole lakes  Cost-benefit of wetland treatment systems vs. sprayfield  Education – Public schools  Education – landowners  Mass balance: How much of a problem is storm water in the big picture?

Relative loadings: septic vs. storm water vs. agriculture/spray field, etc… #1

#2 Land-use; modify comp plan based on highly vulnerable areas  Evaluate existing data  Need LIDAR in Wakulla Co  Stream to sink study  Complete aquifer vulnerability assessment of natural system  Define highly vulnerable areas  Leon Co/TLH/Wakulla coordination Interlocal agreement  Phased in land use regulations (long term and short term)

 Tie in FEMA flood zone remapping into land use plan  Implement Model Code for highly vulnerable areas within all springsheds  Evaluate and implement existing programs (i.e. ERP, other states dealing with karst, Wekiva Study) Have all relevant agencies at table (i.e., DOT, DCA, DEP, WMD, etc.)  Accountability and enforcement #2 Land-use; modify comp plan based on highly vulnerable areas

#3 Minimize runoff  All land-use regs need to focus on minimizing runoff  Ordinance-development-enforcement targeting post=pre regarding quality and quantity  Implement Source Water Pollution Prevention Plan (SWPPP)  Revise Master SW Plan Wakulla/Leon/TLH Discourage impervious surfaces  Landowner education  Look at other states dealing with karst issues and how they address runoff  Landowner incentives