1. Pennsylvania Nonpoint Source BMP Effectiveness, Cost-Effectiveness and Potential for Reducing Loads Jeff Sweeney University of Maryland PA Chesapeake Bay Advisory Committee Meeting Harrisburg, PA June 3, 2004

2. Pennsylvania Nonpoint Source BMP Effectiveness, Cost-Effectiveness, and Potential for Reducing Loads Objective of extensive model analysis was to determine relative nonpoint source BMP effectiveness, cost-effectiveness, and potential load reductions that could be achieved – for TN, TP, and sediment. Study considered 30 nonpoint source BMPs on 9 specific source categories - for the agricultural, urban, and septic sectors. Results for effectiveness, cost-effectiveness, and loading reduction potentials should be viewed RELATIVELY among BMPs – rather than focusing on the absolute numbers. The total annual costs are those reported in EPA UAA documents and documentation of Estimated Stormwater BMP Costs (in 2001 dollars) and reflect amortized capital costs plus annual O&M payments.

3. Pennsylvania Nonpoint Source BMP Effectiveness, Cost-Effectiveness, and Potential for Reducing Loads Potential load reduction numbers are reported since BMPs can be very effective and/or cost-effective, but there may not be potential for extensive implementation (or additional implementation beyond what is already on the ground). This measure is the maximum window of opportunity. o The loading reduction potentials are estimates of reductions beyond existing (2002) controls. All nonpoint source BMPs are ranked according to their cost- effectiveness and potential for reducing nutrient and sediment loads beyond existing (2002) controls - with EQUAL WEIGHT given to cost- effectiveness and potentials. Users of the information cannot simply add the potential load reductions for a group of BMPs to estimate the total reductions for a combination of practices.

4. Pennsylvania Nonpoint Source BMP Cost-Effectiveness and Potential for Reducing Loads Nitrogen

5. Pennsylvania Nitrogen Loads and Cap Load Allocations

6. Pennsylvania Nonpoint Source BMP Cost-Effectiveness and Potential for Reducing Nitrogen Loads

9. Pennsylvania Nonpoint Source BMP Cost-Effectiveness and Potential for Reducing Loads Phosphorus

10. Pennsylvania Phosphorus Loads and Confirmation Goals

11. Pennsylvania Nonpoint Source BMP Cost-Effectiveness and Potential for Reducing Phosphorus Loads

14. Pennsylvania Nonpoint Source Strategy BMPs Excluded from the Cost Effectiveness-Potential Study No-Till Managed Precision Agriculture Dairy Precision Feeding Swine Phytase Precision Rotational Grazing Mortality Composters Urban Street Sweeping Erosion & Sediment Control Horse Pasture Management Abandoned Mine Reclamation Non-Urban Stream Restoration Dirt & Gravel Road Erosion & Sediment Control

15. Pennsylvania Nonpoint Source BMP Effectiveness, Cost-Effectiveness and Potential for Reducing Loads Jeff Sweeney University of Maryland PA Chesapeake Bay Advisory Committee Meeting Harrisburg, PA June 3, 2004

16. Pennsylvania Nonpoint Source BMP Effectiveness, Cost-Effectiveness, and Potential for Reducing Nitrogen Loads

17. Pennsylvania Nonpoint Source BMP Effectiveness, Cost-Effectiveness, and Potential for Reducing Phosphorus Loads

18. Pennsylvania Nonpoint Source BMP Effectiveness, Cost-Effectiveness, and Potential for Reducing Sediment Loads

19. PA Nonpoint Source BMP Effectiveness, Cost-Effectiveness, and Potential for Reducing Phosphorus Loads Beyond TS1 TP Gap = 0.192 million lbs.

20. PA Point Source Potential for Reducing Phosphorus Loads Beyond TS1 TP Gap = 0.192 million lbs.