Snipes Mountain Landfill
Facility Site ID:
501
Cleanup Site ID:
3402
Site Background
The Snipes Mountain Landfill began operation in 1968. Yakima County began operating the facility in 1972 as a municipal solid waste disposal site. The landfill was permitted under chapter 173-304 of the Washington Administrative Code by the Yakima Health District (YHD) and was closed in 1994. The landfill is unlined. The site also included unlined septage lagoons which were closed in 1991 and a waste transfer facility that was closed in 2022.
Volatile organic compounds (VOCs) were detected in groundwater at the facility in 1989. Tetrachloroethene (PCE) and trichloroethene (TCE) have been routinely detected in three monitoring wells and an off-site domestic well since 1989. PCE has been detected in groundwater at concentrations exceeding groundwater quality standards under the Model Toxics Control Act (MTCA).
Volatile organic compounds (VOCs) were detected in groundwater at the facility in 1989. Tetrachloroethene (PCE) and trichloroethene (TCE) have been routinely detected in three monitoring wells and an off-site domestic well since 1989. PCE has been detected in groundwater at concentrations exceeding groundwater quality standards under the Model Toxics Control Act (MTCA).
Documents 10
Legal 3
| Document Title | Document Date | Document Type |
| Snipes Mountain Landfill - Agreed Order DE 22514 | 2/29/2024 | Agreed Order |
| Snipes Mountain Landfill - Final PLP Letter | 2/10/2023 | Final Potentially Liable Person Status Letter |
| Snipes Mountain Landfill - combined early notice and 30-day notice of potential liability | 4/7/2021 | Early Notice Letter |
Public Information 4
| Document Title | Document Date | Document Type |
| Snipes Mountain Landfill - Agreed Order Responsiveness Summary | 2/2/2024 | Responsiveness Summary |
| Snipes Mountain Landfill - Draft Agreed Order Fact Sheet - ES | 1/1/2024 | Fact Sheet\Public Notices |
| Snipes Mountain Landfill - Draft Agreed Order Fact Sheet | 1/1/2024 | Fact Sheet\Public Notices |
| Snipes Mountain Landfill - Draft Agreed Order Fact Sheet | 12/1/2023 | Fact Sheet\Public Notices |
Technical Reports 3
| Document Title | Document Date | Document Type |
| Snipes Mountain Landfill - Draft Agreed Order | 11/17/2023 | Site Specific Administrative Document - other (Administrative correspondence) |
| Snipes Mountain Landfill - Groundwater Monitoring Report 2022 | 4/1/2023 | Groundwater Monitoring Report |
| Snipes Mountain Landfill - Groundwater Monitoring Report 2021 | 4/1/2022 | Groundwater Monitoring Report |
There may be more documents related to this site. To obtain documents not available electronically, you will need to make a public records request.
Places to see print documents
-
Industrial Section300 Desmond Dr SELacey, 98503-1274Please schedule an appointment to view print documents at this location.
-
Solid Waste Program - Central Region1250 W Alder StUnion Gap, 98903This location may only have print documents available during open comment periods.
Contaminants 1
| Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
|---|---|---|---|---|---|---|
| Halogenated Organics - Halogenated Organics | C | C |
- S
- Suspected
- C
- Confirmed Above Cleanup Levels
- B
- Below Cleanup Levels
- RA
- Remediated-Above
- RB
- Remediated-Below
- R
- Remediated
This contaminant list was based on our best information at the time it was entered. It may not reflect current conditions at the site.