Valley View Gas Mart 068

The site is located at 107 W Lincoln Avenue, southwest of the intersection of South First Street and West Lincoln Avenue in Sunnyside, Washington. A convenience store building is located on the southern portion of the property. The building formerly operated as a convenience store, laundry facility, and barber shop. Two underground storage tanks (USTs) and a single fuel-dispenser pump island were formerly located to the north of the building. The remainder of the property was utilized for parking. The property operated as a retail gasoline station until 2003, when the underground storage tanks were removed.

The site is located upslope from the Cream Wine site. Through the sampling program completed for the Valley View, tetrachloroethylene (aka perchloroethylene or PCE) was detected in groundwater at the Cream Wine site at concentrations above state cleanup standards. Studies indicate that the PCE was not released from the fueling station. Historical records indicate that a laundry and dry cleaner did operate on the Valley View property between 1964 and 1995. PCE was commonly used in dry cleaner operations.

In September 1996, petroleum-contaminated soil was discovered during the installation of cathodic protection for the UST system. In 2003, the two USTs, single fuel-dispensing pump island, and associated piping were removed. About 524 tons of petroleum-contaminated soil generated during the excavation was transported to RemTech in Spokane, Washington, for treatment by thermal desorption.
 
Soil samples collected from the excavation limits indicated that soil containing concentrations of gasoline-range hydrocarbons and benzene, toluene, ethylbenzene, and total xylenes in exceedance of the Model Toxics Control Act (MTCA) Method A cleanup levels had been removed.

Groundwater treatment systems/actions were taken subsequent to the soil removal action, culminating in an in-situ chemical oxidation injection in September 2011.

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