Mason County LF
Reported to EPA LMOP · Shelton, WA
Mason County LF was a municipal solid waste landfill in Shelton, WA that opened in 1971, tracked in EPA's Landfill Methane Outreach Program database.
Risk zones
Where exposure is most likely around this site.
| Zone | Inner edge | Outer edge |
|---|---|---|
| Red Zone | 0 mi | 0.25 mi |
| Orange Zone | 0.25 mi | 1 mi |
| Yellow Zone | 1 mi | 2 mi |
| Green Zone | 2 mi | beyond |
Zones are sized for this specific site.
What drives the score
The four areas we weigh for every site.
The site itself
Lower concernWhat this place is: the waste it takes, how old it is, how full it is, and whether floods could spread its contents.
Gas and emissions
Lower concernHow much landfill gas the site gives off and how well it's captured — escaping gas is the most direct sign of pollution reaching nearby air.
Reaching the water
Low concernHow likely anything buried here is to reach groundwater or nearby rivers and lakes — and the site's track record with regulators.
The people nearby
Lower concernWho lives in the exposure zones — how many people, how many children and older adults, and whether the community already carries more than its share.
What's buried here
The waste this site has taken, and what each kind tends to release.
Everyday household and business trash. Common, but it still gives off gas and carries 'forever chemicals' from ordinary products.
Emissions
How much landfill gas is escaping into the air around this site.
EPA enforcement record
Inspections and violations, refreshed as you read this.
No summary available.
Water & flood
Groundwater, nearby waterways, and flood exposure.
- Aquifer
- —
- Depth to water
- —
Who lives nearby
The community inside this site's zones.