Big B Mini Mart
1611 Canyon Rd, Ellensburg, WA 98926


Ecology is providing an opportunity for the public to comment on the Agreed Order at the Big B Mini Mart Site, located at 1611 Canyon Road, in Ellensburg. An Agreed Order is a legal agreement entered into between Ecology and the Potentially Liable Persons (PLPs) describing the process, expectations, and schedule for site cleanup.

This Agreed Order will implement an Interim Action that will remove contaminated soil, evaluate the performance and effectiveness of on-site treatment over time and develop a Draft Cleanup Action Plan (DCAP).  An Interim Action is a cleanup action that partially addresses the cleanup of a site.  This cleanup action will help reduce or eliminate the risk of exposure to human health or the environment.

Ecology is asking for your comments on the Agreed Order.  You are invited to: 

    •    Review the Agreed Order

Send your comments to Ecology for consideration.  Comments will be accepted May 20, 2019 through June 18, 2019.  Additional documents are available for review at the View Electronic Documents link in the right navigation pane.  Please submit any comments and technical questions to John Mefford, Site Manager, at Ecology's Central Regional Office. You can also submit your comments online at:

    •    Submit Comments online

Aerial photo from Floyd Snider RI/FS Report
Please click on the photo for a larger view


The Site is the location of a former gas station and convenience store.  The Site began operating as a retail fueling station in the early 1970s.  In late 1990, soil and groundwater contamination from diesel fuel was discovered when an underground storage tank was replaced. 

The Site was placed on Ecology’s Hazardous Sites List with a ranking of “3” in early 1999.  Sites on the Hazardous Sites List are a priority for Ecology, and have completed a Site Hazard Assessment (SHA).  A SHA provides information about the environmental risk of the Site. Risk is based on the amount of contaminants, how toxic they are, and how easily they can come in contact with people and the environment.  Sites are ranked relative to each other on a scale of “1” to “5”; with a rank of “5” being the lowest.

Big B Mini Mart Site Courtesy of Ellensburg Daily News
Please click on the photo for a larger view


In December 1990, an independent remedial action was performed to remove diesel-contaminated soil.  Approximately 420 cubic yards of contaminated soil was removed and disposed of offsite.  Wells to monitor groundwater were also installed and sampled in 1990 and 1991.  Groundwater sampling showed contamination above state cleanup levels.  Sampling that occurred in early 2011 still showed groundwater contamination above state cleanup levels. 

In early 2014, the U.S. Environmental Protection Agency (EPA) recorded violations and issued a civil penalty for failing to monitor underground storage tanks (USTs).

In March 2015, Ecology and the Potentially Liable Person entered into an Agreed Order to conduct a Remedial Investgation/Feasbility Study (RI/FS) at the Site.  A remedial investigation provides information about what contamination is present, and how far it extends. A feasibility study will compare different ways to clean up the site.  It includes information about how much the cleanup will cost as well as how long it will take.


Map showing site location as Kittitas County, WA SITE INFORMATION


View Electronic Documents

Cleanup Site Details Report

Facility Site ID: # 386

Cleanup Site ID: 4901

Ellensburg, Kittitas County

Status: Cleanup Started   Get definitions of Status terminology

Comment Period:
MAY 20, 2019 - JUNE 18, 2019

John Mefford
Site Manager
(509) 454-7836

Rhonda Luke
Public Involvement Coordinator
(509) 454-7838

Document Repositories:

Central Regional Office
1250 W Alder St
Union Gap, 98903-0009

Ellensburg Public Library
209 N Ruby St
Ellensburg, 98926