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Solar PV on a Capped Municipal Landfill

Solar PV on a Capped Municipal Landfill. Ellen E. Ebner, Tighe & Bond 7/26/2012. Project Permitting. Conservation Commission Generally either RDA or NOI depending on site MEPA Request for Advisory Opinion MassDEP Post Closure Use Permit Pre-application meetings Planning Board Permitting

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Solar PV on a Capped Municipal Landfill

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  1. Solar PV on a Capped Municipal Landfill Ellen E. Ebner, Tighe & Bond 7/26/2012

  2. Project Permitting • Conservation Commission • Generally either RDA or NOI depending on site • MEPA Request for Advisory Opinion • MassDEP Post Closure Use Permit • Pre-application meetings • Planning Board Permitting • Generally either Site Plan Approval or Special Permit • Interconnection Application

  3. Project Development Process • Site Planning – slopes, shading infrastructure avoidance • Geotechnical Engineering – landfill stability, loading, slopes • Site/Civil Engineering – Access roads, stormwater, landfill gas • Electrical Engineering – Interconnection design • Construction Phase • Public Relations • O&M Engineering & Project Completion

  4. Design Considerations • Design – Layout & Project Size • Topography • Orientation • Stormwater infrastructure • Landfill gas infrastructure • Access road • Culverts • Electrical E Side Slopes E

  5. Design Considerations • Loading over Cap • Cap Design • Ballasts and Solar Arrays • Equipment Pad • Impact to cap • Access during and after Construction

  6. Design Considerations • Access Roads • Minimum 3’ Separation from Synthetic Cap Material (FML) • Equipment other than LGP equipment

  7. Design Considerations • Stormwater • Arrays and Ballasts

  8. Design Considerations • Stormwater • Access Roads • Maintaining Existing Stormwater Management System • Adding Culverts • Erosive Velocities

  9. Construction Sequencing

  10. Construction – Site Prep

  11. Construction – Access Roads

  12. Construction - Ballasts • Precast versus Cast in Place Blocks

  13. Construction - Racks

  14. Construction - Modules

  15. Construction – Electrical Equipment

  16. Construction – Electrical Equipment

  17. Press and Education • Media Day • Boston Globe • Lieutenant Governor Murray • MassDEP Commissioner Kimmell • Easthampton Mayor Tautznik • MassDEP Fieldtrip

  18. Operations & Maintenance • Typical Closed Landfill O&M • Water monitoring • Settlement/Cap inspection • Gas vent inspection • Stormwater infrastructure inspection • Mowing, vegetation management • Solar Array O&M • Panel cleaning as necessary when decreased production/observed accumulation of dirt • Annual inverter & electrical inspection

  19. Questions “It’s just awful to look at.” “Those of us most affected by this aren’t going to see any benefits.’’ One neighbor “described himself as ‘mildly opposed’ to the project. He worries that the 5,000-pound concrete blocks that anchor each solar array will puncture the cap of the landfill, leading to toxic leaks into the ground water or clouds of methane.”

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