Methane Plume Maps

Plume imaging is from Date and time of imaging are included on each plume image. To show them at the same scale, each plume image includes a circle 300m in radius, drawn using a tool on the Carbon-Mapper site.

Figures for “tons of solid waste processed annually” come from each landfill’s annual report. The annual report for Coffin Butte Landfill lists total volume emplaced, not tons of solid waste, so the figure for Coffin Butte Landfill has been corrected to remove daily cover (the dirt used to cover freshly dumped garbage at the end of each day), which is not solid waste. The annual volume of daily cover was obtained from Oregon Department of Environmental Quality data, and this volume was subtracted from total annual volume to arrive at the figure shown for Coffin Butte Landfill.

The figures for methane leak detection are taken from the air quality annual reports for Columbia Ridge Landfill and Coffin Butte Landfill. This data hasn’t yet been obtained for Short Mountain Landfill.

Graphics last updated 4-29-24.