Stevens Pass Ski Resort Vehicle Maintenance Facility

Facility Site ID: 19775 Cleanup Site ID: 11420

Site Description

The Stevens Pass Ski Area operates on two areas of U.S. Forest Service (Forest Service) land (a total of 2,463 acres), pursuant to a special use permit issued by the Forest Service as well as on a 32-acre privately held parcel referred to as Yodelin.

An April 2010 Phase I environmental site assessment and May 2010 a Phase II assessment reported contamination in two areas, the Stevens Pass Mini Mart Station site (former) and Stevens Pass Ski Resort Vehicle Maintenance Facility site.

The Stevens Pass Ski Resort Vehicle Maintenance Facility site currently operates as a vehicle maintenance facility and was constructed in 1980. The facility is located south of Highway 2, near the bottom of a ski run. Vehicle fueling occurs at the facility and at the time of the remedial action, two underground storage tanks (USTs) were in use—a 10,000-gallon UST that contained diesel and a 4,000-gallon UST that contained unleaded gasoline. The USTs were installed in 1988, replacing the two USTs that had been originally installed in 1980. Several aboveground storage tanks are located at the site to support maintenance activities.

Cleanup Activities

A remedial action was conducted at this site from August through November 2011. About 3,000 tons of soil were removed from both the southern and northern excavations. Over 15,000 gallons of groundwater within the excavation were hauled to the treatment system at the former mini mart location and treated using carbon adsorption and reinfiltrated. Contaminated soil remains at a locations adjacent to and underneath a structure at the site; this location has been capped with 8” concrete.

Groundwater monitoring was performed from November 2011 through August 2012 to confirm cleanup. An environmental covenant has been placed on the property identifying locations on the property impacted with total petroleum hydrocarbons above cleanup levels.

Cleanup Complete

Based upon cleanup activities and the placing of the environmental covenant, Ecology has determined the site is no longer a threat to human health and the environment.  Ecology made a no further action determination in March 2013.

Periodic Review

Periodic reviews are conducted every 5 years by Ecology for sites that have Institutional controls. The review is intended to examine the effectiveness of cleanup activities and to assure the continued protection of human health and the environment.

Periodic review results

Based on the site visit conducted in June 2018, no repair, maintenance or contingency actions have been required at the site. The excavation conducted during the interim action eliminated the human exposure (ingestion, contact) to contaminated soils. The gravel and concrete caps at the site continue to prevent direct contact with the contaminated soils.

The cleanup action completed at the Site is protective of human health and the environment.

Soil cleanup levels have not been met at the site; however, the cleanup action is determined to comply with cleanup standards under WAC 173-340-740(6)(f), since the long-term integrity of the containment system is ensured and the requirements for containment technologies have been met.

The use permit for the site has been fully implemented and is effective in the short term protecting public health and the environment from exposure to hazardous substances and protecting the integrity of the cleanup action.

Based on this five-year review, Ecology has determined that the requirements of the use permit is being followed at the site. No additional remedial actions are required by the  property owner. It is the property owner’s responsibility to continue to inspect the site to assure that the integrity of the surface cap is maintained.

Voluntary Cleanup Program

This site was cleaned up under our Voluntary Cleanup Program, which provides technical help to owners of contaminated sites.

Voluntary Cleanup Program customers pay fees to cover our costs for technical help and reviewing cleanup reports. Sites in this program must meet the same cleanup standards as the sites Ecology manages under legal orders.

Site use restrictions called institutional controls are in effect

Institutional controls can be fences, signs, or restrictions on how the property is used. For instance, an institutional control may prohibit installing drinking water wells or disturbing a protective cap that isolates contamination. These restrictions keep the contamination contained and keep people from being exposed to the contamination. The controls are usually listed in environmental covenants recorded with the county.

Periodic reviews are required when institutional controls are required at a site. Ecology conducts reviews to make sure the controls remain effective and the cleanup still protects human health and the environment. We conduct periodic reviews about every five years.

Other Upland Instrument

County Recording #:
County Recording Date:


  • Prohibit Soil Disturbance
  • Restrict All Ground Water Extraction/Well Installation

Restricted Media

  • Groundwater
  • Soil
Legal 1
Document Title Document Date Document Type
Stevens Pass Ski Resort Amendment for Special Use Authorization 9/18/2012 Environmental Covenant; Alternative Mechanism
Technical Reports 4
Document Title Document Date Document Type
Stevens Pass Vehicle Maintenance Facility Periodic Review Letter 9/21/2018 Periodic Review (5 Year)
Stevens Pass Mini Mart and Vehicle Maintenance Site 2018 Periodic Review 6/1/2018 Periodic Review (5 Year)
Stevens Pass GW sampling rpt 10/1/2012 Groundwater Monitoring Report
Stevens Pass Ski Area Remedial Action Report 12/8/2011 Remedial Action Report
Voluntary Cleanup Program 2
Document Title Document Date Document Type
Stevens Pass Vehicle Maintenance Facility - VCP Opinion on Site Cleanup - No Further Action 3/14/2013 VCP Opinion on Site Cleanup – NFA
Stevens Pass VCP opinion on planned action 8/18/2011 Voluntary Cleanup Program Opinion – Other
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

  • Central Regional Office
    1250 W Alder St
    Union Gap, 98903-0009
    Please schedule an appointment to view print documents at this location.

Contaminants 2

Contaminant Type
Surface Water
Non-Halogenated Organics - Petroleum-Diesel RA RB
Non-Halogenated Organics - Petroleum-Gasoline RA RB
Confirmed Above Cleanup Levels
Below Cleanup Levels
This contaminant list was based on our best information at the time it was entered. It may not reflect current conditions at the site.