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Methodology to Distribute Target Loads

Methodology to Distribute Target Loads. Principals’ Staff Committee 10/23/2009 Bob Koroncai - Gary Shenk. Review of Target Load Method. Relative Effectiveness is a combination of Watershed Delivery and Estuarine Delivery. Low Delivery || / High Delivery. Potomac Estuarine Effectiveness.

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Methodology to Distribute Target Loads

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  1. Methodology to Distribute Target Loads Principals’ Staff Committee 10/23/2009 Bob Koroncai - Gary Shenk

  2. Review of Target Load Method

  3. Relative Effectiveness is a combination of Watershed Delivery and Estuarine Delivery Low Delivery || \/ High Delivery Potomac Estuarine Effectiveness James Estuarine Effectiveness

  4. 10% 20% 34% 69% 73% 81% 100% 100%

  5. Review of Target Load Method from April 2 2 2 2 2

  6. How Many lines? Note: Basin-Jurisdictions have single target load no matter how many lines

  7. Appropriate Slope?

  8. Shape of the lines

  9. Distance Between Lines

  10. Preferences of WQGIT Number: 2 lines, WWTP and all else Shape: Open to all WWTP: Set WWTP at a high level and meet water quality goals with other loads Slope: 20% Considered 5 options and reached a unanimous recommendation to forward the 2 following options

  11. 4.5 mg/l 8 mg/l 20 percent slope Option A

  12. 4.5 mg/l 8 mg/l 20 percent slope Option B

  13. 0.22 mg/l 0.53 mg/l Option A 20 percent slope

  14. 0.22 mg/l 0.53 mg/l Option B 20 percent slope

  15. Decision Requested . . .after lunch • Does the PSC prefer option A or option B as the initial working target loads for the purpose of starting the watershed implementation planning?

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