Prosser Airport Aircraft Applicators
Facility Site ID:
7474148
Cleanup Site ID:
2188
Site Description
The Prosser Airport Aircraft Applicators site is currently an aircraft hangar and surrounding property has been the location of an aerial pesticide applicator operation since prior to 1966. Investigation revealed areas of stained soil. Soil sampling confirmed contamination from pesticides (e.g., dinoseb, DDT, dieldrin, and others) and petroleum. The site is currently owned by the Port of Benton.
Cleanup Activities
Some cleanup activities have already occurred. More extensive sampling has been completed to determine the extent of the contamination. Excavation of contaminated soils has taken place. Groundwater monitoring wells have been installed.
Ecology entered into Agreed Order with the Port of Benton to complete an Interim Action, Final Interim Action Report, and associated work products to remediate contamination. Ecology has determined that the Interim Action has met the substantive requirements in the Agreed Order. Although Interim Action work covered by the Agreed Order has been completed, recent monitoring indicates that there is still residual groundwater contamination (pesticides, petroleum products, and metals) remaining on site and the possibility of an additional remaining source area exists.
Ecology has recommended that the Port of Benton enroll in the Voluntary Cleanup Program to characterize and address any remaining contamination on Site.
You can find site documents by using the "View Electronic Documents" link in the bar on the right, or requesting information from the Central Regional Office public records coordinator.
Ecology entered into Agreed Order with the Port of Benton to complete an Interim Action, Final Interim Action Report, and associated work products to remediate contamination. Ecology has determined that the Interim Action has met the substantive requirements in the Agreed Order. Although Interim Action work covered by the Agreed Order has been completed, recent monitoring indicates that there is still residual groundwater contamination (pesticides, petroleum products, and metals) remaining on site and the possibility of an additional remaining source area exists.
Ecology has recommended that the Port of Benton enroll in the Voluntary Cleanup Program to characterize and address any remaining contamination on Site.
You can find site documents by using the "View Electronic Documents" link in the bar on the right, or requesting information from the Central Regional Office public records coordinator.
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 #:
2020-046731
County Recording Date:
11/20/2020
Restrictions/Requirements
- Prohibit Removal or Alteration of Existing Buildings
- Prohibit Soil Disturbance
Restricted Media
- Groundwater
- Soil
Documents 18
Legal 4
Document Title | Document Date | Document Type |
Prosser Airport Aircraft Applicators Covenant | 11/20/2020 | Environmental Covenant; Alternative Mechanism |
Prosser Airport Aircarft Applicators Notice of Satisfaction of AO No. DE 6070 | 1/23/2013 | Order Notice of Satisfaction/Status |
Prosser Airport Aircraft Applicators Interim Action AO No. DE 6070 | 9/17/2008 | Agreed Order |
Prosser Airport Aircraft Applicators-Early Notice Letter | 8/21/2007 | Early Notice Letter |
Public Information 3
Document Title | Document Date | Document Type |
Prosser Airport Aircraft Applicators - Delisting Fact Sheet - Spanish | 3/1/2024 | Fact Sheet\Public Notices |
Prosser Airport Aircraft Applicators - Delisting Fact Sheet | 3/1/2024 | Fact Sheet\Public Notices |
Prosser Airport Aircraft Applicators - Interim Action Agree Order fact sheet | 9/1/2008 | Fact Sheet\Public Notices |
State Environmental Policy Act 2
Document Title | Document Date | Document Type |
Prosser Airport Aircraft Applicators - Determination of Non Significance | 9/17/2008 | SEPA Documents |
Prosser Airport Aircraft Applicators - Environmental Checklist | 8/25/2008 | SEPA Documents |
Technical Reports 7
Document Title | Document Date | Document Type |
Prosser Airport Aircraft Applicators - Monitoring and Closure Report | 8/16/2019 | Groundwater Monitoring Report |
Prosser Airport Aircraft Applicators Monitoring and Closure Report | 10/31/2017 | Remedial Action Report |
Prosser Airport Aircraft Applicators GW Monitoring Results September 2014 | 11/21/2014 | Groundwater Monitoring Report |
Prosser Airport Aircraft Applicators SHA Results Notification | 8/13/2013 | Site Specific Administrative Document - other (Administrative correspondence) |
Prosser Airport Aircraft Applicators - Site Hazard Assessment | 2/7/2013 | Site Hazard Assessment Report |
Prosser Airport Aircraft Applicators SHA to occur ltr | 12/11/2012 | Site Specific Administrative Document - other (Administrative correspondence) |
Prosser Airport Aircarft Applicators Interim Action Report | 4/28/2010 | Interim Action Documents |
Voluntary Cleanup Program 2
Document Title | Document Date | Document Type |
Prosser Airport Aircraft Applicators - No Further Action | 9/10/2021 | VCP Opinion on Site Cleanup – NFA |
Prosser Airport Aircraft Applicators - VCP Opinion on Site Cleanup - Further Action | 6/10/2015 | Voluntary Cleanup Program Opinion – Other |
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.
-
Prosser Library902 7th StProsser, 99350This location may only have print documents available during open comment periods.
Contaminants 5
Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
---|---|---|---|---|---|---|
Pesticides - Halogenated Pesticides | RA | RB | ||||
Metals - Arsenic | B | RB | ||||
Metals - Lead | B | RB | ||||
Non-Halogenated Organics - Benzene | RA | RB | ||||
Non-Halogenated Organics - Petroleum-Gasoline | RA | 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.
Public Comment Period March 01, 2024-April 01, 2024
The Hazardous Sites List is a list of sites Ecology reviewed for their potential threat to human health and the environment. This review is based on how much contamination is present, how toxic it is, and how easily it can come in contact with people and the environment. Sites must go through cleanup and meet state standards before Ecology can remove them from the list.
Review:
• Review the No Further Action letter, dated September 10, 2021
• Review the “Monitoring and Closure Report (Rev01) Former Mary Bonney Site Prosser Airport Prosser, Washington” prepared by Shannon & Wilson Inc., dated August 16, 2019
Based upon cleanup activities conducted at the site and the recording of the environmental covenant, Ecology has determined the site is no longer poses a threat to human health and the environment.
Información en español
Submit comments to Frank Winslow, Site Manager, by April 1, 2024, 11:59 p.m.
Email: Frank.Winslow@ecy.wa.gov
Mail: 1250 W. Alder Street, Union Gap, WA 98903
Online: Comment form
Next Steps
After the public comment period ends, Ecology will review and respond to comments received and will hold a public meeting if 10 or more people request one. After review and consideration of comments received, the site will be removed from the Hazardous Site List.