Lee Elementary School
Facility Site ID:
7763612
Cleanup Site ID:
1094
Site Description
The Lee Elementary School was cleaned up as part of the Area-Wide Soil Contamination Project.
Area-wide soil contamination is defined as contamination above state cleanup levels that is dispersed over a large geographic area. The soil contamination in this case is a result of central Washington’s orchard industry. Much of the region consists of current or former orchard land, where long-term pesticide application has taken its toll. Lead arsenate, a pesticide commonly used between the years of 1905 and 1947 to control the codling moth, has been identified as the primary source of increased lead and arsenic concentrations.
Due to their chemical structure, lead and arsenic tend to bond with soil particles and often remain at or near ground surface level for decades, creating an exposure pathway through inhalation and/or ingestion.
Although lead and arsenic are naturally occurring elements, elevated concentrations have been proven to have a negative impact on human health. Young children are generally more susceptible than adults, which is why Ecology has focused remediation efforts on schools.
In 2005, the site was added to Ecology’s Hazardous Sites List with a ranking of “5”. 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.
Area-wide soil contamination is defined as contamination above state cleanup levels that is dispersed over a large geographic area. The soil contamination in this case is a result of central Washington’s orchard industry. Much of the region consists of current or former orchard land, where long-term pesticide application has taken its toll. Lead arsenate, a pesticide commonly used between the years of 1905 and 1947 to control the codling moth, has been identified as the primary source of increased lead and arsenic concentrations.
Due to their chemical structure, lead and arsenic tend to bond with soil particles and often remain at or near ground surface level for decades, creating an exposure pathway through inhalation and/or ingestion.
Although lead and arsenic are naturally occurring elements, elevated concentrations have been proven to have a negative impact on human health. Young children are generally more susceptible than adults, which is why Ecology has focused remediation efforts on schools.
In 2005, the site was added to Ecology’s Hazardous Sites List with a ranking of “5”. 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
During the summer of 2008, Ecology conducted a cleanup and placed all contaminated soils under a geotextile fabric barrier. Then, six inches of clean topsoil were placed on top on the barrier fabric. This cleanup method, referred to as capping, is cost-effective and prevents human exposure to contaminated soil.
Following cleanup, an environmental covenant was recorded for the property with the Douglas County Assessor. The purpose of the environmental covenant is to provide a permanent legal record of the contamination that remains on the property, and to prevent activities at the site that might disturb or damage the soil cap.
Following cleanup, an environmental covenant was recorded for the property with the Douglas County Assessor. The purpose of the environmental covenant is to provide a permanent legal record of the contamination that remains on the property, and to prevent activities at the site that might disturb or damage the soil cap.
Cleanup Complete
Based on the cleanup completed and environmental covenant in place, Ecology has determined the site does not pose a threat to human health or the environment. A no further action determination was issued in April 2011 and the site has been removed from the Hazardous Sites List.
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.
Institutional Controls 1
Environmental Covenant
County Recording #:
3141429
County Recording Date:
2/16/2010
Restrictions/Requirements
- Ongoing Maintenance of Remedy
- Prohibit Soil Disturbance
- Restrict Access
- Restrict Land Use
Restricted Media
- Soil
Documents 10
Legal 2
Document Title | Document Date | Document Type |
Lee Elementary School No Further Action letter | 4/25/2011 | NFA Letter – non-VCP |
Lee Elementary School Covenant | 2/16/2010 | Environmental Covenant; Alternative Mechanism |
Public Information 2
Document Title | Document Date | Document Type |
Lee Elementary School delisting fact sheet | 1/13/2010 | Fact Sheet\Public Notices |
Lee Elementary School IRA Plan & SEPA fact sheet | 4/1/2008 | Fact Sheet\Public Notices |
State Environmental Policy Act 3
Document Title | Document Date | Document Type |
Lee Elementary School - Ecology SEPA Comments Letter | 1/18/2019 | SEPA Documents |
Lee Elementary School SEPA DNS | 4/16/2008 | SEPA Documents |
Lee Elementary School SEPA checklist | 4/8/2008 | SEPA Documents |
Technical Reports 3
Document Title | Document Date | Document Type |
Lee Elementary School Interim Action final rpt | 11/20/2009 | Interim Action Documents |
Lee Elementary School IRA Plan | 3/25/2008 | Interim Action Documents |
Lee Elementary School Site Hazard Assessment | 8/1/2005 | 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 Office1250 W Alder StUnion Gap, 98903-0009Please schedule an appointment to view print documents at this location.
Contaminants 1
Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
---|---|---|---|---|---|---|
Metals - Metals Priority Pollutants | RA |
- 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.