Landfill Ponding Repair Project

The Carnation Landfill is a closed municipal solid waste landfill located about 2 miles southeast of Carnation on the south side of NE 24th Street, about 1/2 mile east of the intersection of NE 24th Street and State Highway 203. Due to landfill settling, the existing stormwater system has been disrupted, resulting in stormwater ponding along the east, south, and southwest portions of the area around the landfill cap. This ponding overflows the armored ditch near the southwest corner of the capped landfill and into the area south of the ditch. Approximately 300 linear feet of ditch requires repair.

2025 Plan of Action:

  • Remove the quarry spalls and geotextile filter fabric from affected areas
  • Truck in clean fill and regrade the sunken areas to provide positive drainage
  • Attach a geomembrane ditch flap to the existing geomembrane
  • Install new geotextile filter fabric and reinstall existing quarry spalls

2026 Plan of Action: N/A

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