Spokane County Raceway Park


The Spokane Raceway Park is currently under independent cleanup by Spokane County under the Voluntary Cleanup Program through the Washington Department of Ecology. See the most recent remedial progress reports by Spokane County below:

SRP TCE/Hydrogeology Evaluation:

SRP Remedial Progress Reports:

The Spokane Raceway Park (SRP) is located at 101 North Hayford Road in Airway Heights, Washington, and is characterized by high plains desert growth. The site encompasses approximately 577 acres and includes a 2.5-mile asphalt paved road course used by a variety of motorized vehicles, a one-quarter mile drag strip, and a one-half mile oval race track used for stock car racing. The site is surrounded by the Inland Asphalt Company and a large gravel pit to the southwest, the Spokane County ORV Park to the west, the Northern Quest Casino to the east, and the Geiger Correctional Facility to the south. 

There are two distinct aquifer units beneath the Spokane Raceway Park: the higher elevation Wanapum aquifer, and the lower elevation Grand Ronde aquifer. These aquifers are geographically bounded by Deep Creek to the northwest and the Spokane River to the northeast. One of the greatest contaminants of concern at the SRP, Trichloroethylene (TCE), appears to be within the Grand Ronde aquifer at approximately 340 to 360 feet below ground surface (URS Corporation, 2011). TCE concentrations were found to be over 16 ug/L at the site in 2011. Chloroform, Carbon tetrachloride, Ethylene dibromide (EDB), Methylene chloride (MC), and Vinyl chloride (VC) are also constituents of concern at the Spokane Raceway Park. The constituents of concern and their designated cleanup criteria are listed below:

Contaminants of Concern at the Spokane Raceway Park


Cleanup Criteria 

Trichloroethylene (TCE)

4 ug/L


14 ug/L

Carbon tetrachloride

5 ug/L (Federal)

Ethylene dibromide (EDB)

0.01 ug/L

Methylene chloride (MC)

5 ug/L

Vinyl Chloride (VC)

0.2 ug/L