12 hofstad south_soundsymposium

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12 hofstad south_soundsymposium

  1. 1. Improvement in Henderson Inlet Water Quality/Shellfish Harvest Status South Sound Science Symposium Oct 27, 2010
  2. 2. Henderson Watershed … What makes it work?
  3. 3. Where is Henderson Inlet?
  4. 4. ... all was good ... until ...
  5. 5. Closures, downgrades, and more downgrades …
  6. 6. … and so a program evolved.  2001: Shellfish Protection Dist formed  2002: Committee members appointed Risk-Based O&M program – top priority  2003: Grant dollars available to develop septic O&M program
  7. 7. The Process was key… • An Advisory Committee began late 2003 • Proposal by April 2004 • Proposal out for public discussion …
  8. 8. More than 300 showed up for the first meeting
  9. 9. … many had serious concerns
  10. 10. … and asked lots of questions
  11. 11. Only about 50 came for open house #2 … and 30 attended final hearing
  12. 12. Program adopted and built … • November 2005 - Public hearing • December 21, 2005 Board of Health adopted ‘Area of Special Concern’ • 2006 - Program built • January 1, 2007 - Inspection notices mailed
  13. 13. Low risk systems – inspect every 3 years High risk systems – inspect every 3 years AND Dye test every 6 years Key: Risk-based approach …
  14. 14. HWPA Program Statistics *Focus: inspect, pump as needed Certificates Issued: Inspection + maintenance complete and system is working Number of Septic Tanks Pumped 5503 3696 78% of total sent 67% * of total issued
  15. 15. Dye Tests Number of Dye Tests Number of Systems that Passed Systems needing repair 147 94 (89%) 9 (11%)
  16. 16. Septic System Repair Activity Installed % ofTotal Installed Systems 62 51% Tanks 55 45% SandFilter/ Mound Rebuilds 4 3% 121
  17. 17. There are still steel septic tanks in Thurston County
  18. 18. Septic Tank Levels 0.0 10.0 20.0 30.0 40.0 50.0 60.0 1 201 401 601 801 1001 1201 1401 1601 1801 2001 2201 2401 2601 2801 3001 3201 3401 3601 3801 4001 4201 4401 4601 4801 CombinedScum+Sludge(Inches) Pump when scum + sludge more than 16" Working depth of typical septic tank - 48"
  19. 19. Pumping Septic Tanks – the #1 Neglected Maintenance Issue
  20. 20. Detail of Minor Repairs Minor Repair Description Number of ... Replace / repair baffles 215 Pipes, floats, electrical 180 Tank holes & cracks 131 Pump problems 52 Other 29 15-Month Total 547
  21. 21. Grants Riser Rebates Key: Incentives & Assistance $51,000 $45,892 $74,230 Low Interest Loans Homeowner Workshops
  22. 22. Riser Rebates $51,000
  23. 23. 3696 tanks have been pumped
  24. 24. Minimally developed shoreline … 14.2 residences per mile
  25. 25. But Dense Development 2 hours “travel time” away
  26. 26. Stormwater treatment has also been a high priority. Infrastructure has been built to treat stormwater flowing to Woodland Creek.
  27. 27. … as a result shellfish growing areas have been reopened! upgrades
  28. 28. What made it happen? Who made it happen? Upgrade: • The will to do it • Hard work • Cooperation • Watershed residents • Homeowners • Farmers • Cities • County staff • State agencies
  29. 29. Let’s celebrate!

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