BMP Maintenance - I&M Trng 2011

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BMP Maintenance - I&M Trng 2011

  1. 1. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Stormwater BMP Maintenance Importance • Maintain the function of the BMP • Maintain environmental and habitat benefits • Maintain appearance-public acceptance • Prevent costly future repairs
  2. 2. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Developing a Maintenance Strategy Facility Inventory • Obtain maintenance plan and design documents • Visit the site to review conditions, access • Contact the local governmental jurisdiction
  3. 3. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Developing a Maintenance Strategy Work Plan • Review facility inventory • Review maintenance guides • Create a list of activities, equipment needed and cost • Review plan with owner and local governmental officials • Modify or create checklist and record keeping procedures • Assign and educate personnel • Implementation and evaluation
  4. 4. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Inspections Location • Upstream Parking Lots & Paved Areas • Upstream Unpaved Areas • Forebays • Main Treatment Area • Storm Sewer Pipes and Structures
  5. 5. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Inspections Frequency • Weekly during establishment period • Weekly/monthly after establishment period • Complete when doing regular site maintenance • Some inspections should occur during rainfall • Some inspections should occur 24 hours after rainfall Weeds and invasive species a few months after planting Immediately after planting During rain eventAfter establishment period
  6. 6. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Inspections Visual Assessment • Trash and debris • Sediment accumulation • Bare soil and erosion • Plant coverage • Plant health Trash and debris Sediment accumulation Plant coverage Erosion Plant Health
  7. 7. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Inspections Visual Assessment • Soil moisture and percolation • Weeds and invasive species • Animal and insect damage • Mulch condition Weeds and invasive species 2 months after planting Soil percolation Animal damage Mulch
  8. 8. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Periodic Inspections Frequency • Annually or as needed • Increase frequency to monitor identified potential problems • During storm events
  9. 9. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Periodic Inspections Visual Assessment • Storm sewer pipe and structure condition • Dam, embankment, overflow weir condition • Stormwater Flow
  10. 10. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Periodic Inspections Testing and Surveys • Soil testing • Soil profile • Stormwater flow • Detention volume • Water testing
  11. 11. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Maintenance Procedures Soil Stabilization • Establishment Period • Management Period • Repairs
  12. 12. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Maintenance Procedures Clean Up – Trash and Debris • Location • Equipment • Frequency • Disposal
  13. 13. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Maintenance Procedures Clean Up – Sediment Removal • Location (Upstream, Forebay, Structures, Ponding & Treatment Area) • Equipment • Method (Avoid heavy equipment of select soils) • Frequency • Disposal • Amount (All or partial)
  14. 14. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Maintenance Procedures Plant Density • Facility age • Plant loss • Season • Plant spacing Year 1 Year 2 Year 4
  15. 15. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Maintenance Procedures Invasive Species Removal –General • Importance • Frequency • Environmentally sensitive practices • Plant identification-use photo guides
  16. 16. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Maintenance Procedures Invasive Species Removal –By Hand • Method • Frequency • Weed species knowledge • Clean Up (removal of Biomass)
  17. 17. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Maintenance Procedures Invasive Species Removal –Mowing • Equipment • Method • Height • Frequency • Edging • Clean Up (removal of Biomass)
  18. 18. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Maintenance Procedures Invasive Species Removal –Edging & Trimming • Purpose • Equipment • Method • Frequency • Clean Up (removal of Biomass)
  19. 19. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Maintenance Procedures Invasive Species Removal –Burning • Benefits • Local regulations • Method (Spot and Large Area) • Frequency
  20. 20. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Maintenance Procedures Invasive Species Removal –Chemical • Integrated Chemical Management • Product Selection • Timing • Method/Application
  21. 21. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Maintenance Procedures Invasive Aquatic Species Removal • Cattails • Reed Canary Grass • Algae
  22. 22. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Maintenance Procedures Invasive Woody Species Removal • Location • Equipment • Method • Frequency
  23. 23. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Maintenance Procedures Plant Maintenance • Aesthetic Goals • Frequency • Plant Characteristics • Watering • Replacements • Disease
  24. 24. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Maintenance Procedures Soil Amendments • Type (Organic vs Inorganic • Composition • Frequency • Application Rate • Adjacent Areas
  25. 25. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Regular Maintenance Procedures Pest Management • Animal damage • Insects
  26. 26. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Stormwater BMP Maintenance Resources • APWA MARC Maunal of Best Management Practices for Stormwater Quality, Mid America Regional Council, August 2009 • “Maintaining Stormwater Systems: A Guidebook for Private Owners and Operators”, Northern Virginia Regional Commission, January 2007 • “Practically Easy Landscape Maintenance: A Care Manual for Natural Drainage Systems”, Seattle Public Utilities, 2005 • “Landscape Guide for Stormwater Best Management Practice Design”, Metropolitan St Louis Sewer District, 2009 • “A Citizen’s Guide to Maintaining Stormwater Best Management Practices”, Lake County Stormwater Management Commission, October 2004 • “Stormwater Wet Pond and Wetlands Management Guidebook”, EPA 833-B-09-001 February 2009 • Stormwater BMPs Selection, Maintenance & Monitoring, Gordon England and Stuart Stein, July 2007
  27. 27. Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Stormwater BMP Maintenance Questions?

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