Facility Site ID: 23975611 Cleanup Site ID: 478

Site Description

In April 1998, Ecology responded to complaints of yellow water coming from two domestic wells in the vicinity of the Alexander Farms site. Ecology determined that the soil and groundwater at the site was contaminated with Dinoseb, a herbicide that was banned from use by the USEPA in 1986.

In 2002, the site was added to Ecology’s Hazardous Sites List with a ranking of “2”.  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.

Cleanup Activities

Between 1998 and 2005, approximately 15,000 tons of Dinoseb contaminated soil was excavated from the site. The soil, which was acting as the source of groundwater contamination, was hauled to a licensed disposal facility. Between 2005 and 2008, 14 groundwater monitoring wells were sampled quarterly and analyzed until the groundwater in all the wells remained below cleanup levels for Dinoseb for eight consecutive quarters (2 years).

Cleanup Complete

As of January 2008, the groundwater from all 14 wells had tested below cleanup levels for two years. Based upon review of the cleanup action reports and eleven years of data, Ecology determined the site is no longer a threat to human health and the environment. The site has been removed from the Hazardous Sites List.
Legal 12
Document Title Document Date Document Type
Alexander Farms Covenant No. 2005-000517 Rescinded 7/14/2015 Environmental Covenant; Alternative Mechanism - Removed
Alexander Farms Dismissal of CD No. DE 1796 8/14/2009 Consent Decree
Alexander Farms Notice of Completion of CD No. DE 1796 5/19/2009 Order Notice of Satisfaction/Status
Alexander Farms Covenant No. 2005-000517 1/6/2006 Environmental Covenant; Alternative Mechanism
Alexander Farms soil removal & gw CD No. DE 1796 10/28/2004 Consent Decree
Alexander Farms EEO No. DE 98TC-C138 Amend 6 8/14/2001 Enforcement Order
Alexander Farms EEO No. DE 98TC-C138 Amend 5 2/20/2001 Enforcement Order
Alexander Farms EEO No. DE 98TC-C138 Amend 4 8/24/2000 Enforcement Order
Alexander Farms EEO No. DE 98TC-C138 Amend 3 10/12/1999 Enforcement Order
Alexander Farms EEO No. DE 98TC-C138 Amend 2 8/16/1999 Enforcement Order
Alexander Farms EEO No. DE 98TC-C138 Amend 1 6/17/1998 Enforcement Order
Alexander Farms Emergency Enforcement Order No. DE 98TC-C138 5/7/1998 Enforcement Order
Public Information 6
Document Title Document Date Document Type
Alexander Farms - La Eliminación Convenio Ambiental 4/2/2015 Fact Sheet\Public Notices
Alexander Farms Rescind Covenant Fact Sheet 4/2/2015 Fact Sheet\Public Notices
Alexander Farms delisting fact sheet Spanish 3/31/2009 Fact Sheet\Public Notices
Alexander Farms delisting fact sheet 3/31/2009 Fact Sheet\Public Notices
Alexander Farms CD SEPA fact sheet 7/1/2004 Fact Sheet\Public Notices
Alexander Farms Public Participation Plan 3/1/2004 Public Participation Plan
Technical Reports 4
Document Title Document Date Document Type
Alexander Farms Request to Rescind Covenant 2/25/2015 Site Specific Administrative Document - other (Administrative correspondence)
Alexander Farms Groundwater Cleanup Completion Report 3/1/2009 Groundwater Monitoring Report
Alexander Farms Soil rpt 3/1/2005 Remedial Action Report
Alexander Farms - SHA 8/1/2002 Site Hazard Assessment 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

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

Contaminants 1

Contaminant Type
Soil
Groundwater
Surface Water
Air
Sediment
Bedrock
Pesticides - Non-Halogenated Pesticides RB RB
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.