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Environmental Cleanup Site Information (ECSI) Database Site Summary Report - Details for Site ID 4077, North Morrow Areawide Groundwater

This report shows data entered as of February 4, 2023 at 9:05:58 PM

This report contains site details, organized into the following sections: 1) Site Photos (appears only if the site has photos); 2) General Site Information; 3) Site Characteristics; 4) Substance Contamination Information; 5) Investigative, Remedial and Administrative Actions; and 6) Site Environmental Controls (i.e., institutional or engineering controls; appears only if DEQ has applied one or more such controls to the site).  A key to certain acronyms and terms used in the report appears at the bottom of the page.

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Environmental Cleanup Site Information (ECSI) Database Site Summary Report - Details for Site ID 4077, North Morrow Areawide Groundwater

Site Photos
Click to View Photo Picture Date Caption Size
View Photo 12/03/2004 2003 Perchlorate Sampling Results from LUB GWMA synoptic sampling event 1660 Kb

General Site Information

Site ID: 4077 Site Name: North Morrow Areawide Groundwater CERCLIS No: 001002612
Address:  Boardman 
  County: Morrow Region: Eastern
Other location information:
Investigation Status: Suspect site requiring further investigation
Brownfield Site: No NPL Site: No Orphan Site: Yes Study Area: Yes
Property: Twnshp/Range/Sect: 4N , 25E , 21 Tax Lots:
  Latitude: 45.8031 deg. Longitude: -119.6902 deg.  Site Size: 100 sq. miles
Other Site Names:

Site Characteristics

General Site Description: This Area Wide site encompasses several hundred square miles across northern Morrow County and northwestern Umatilla County, near and around the town of Boardman. Perchlorate (also known as Perchlorate Ion, Perchlorate Salts, or Perchloric Acid) has been detected in groundwater, surface water, and soils in the area; with irrigation wells, a community well, and domestic wells being impacted.

Perchlorates are used extensively in industry in the production of military explosives, rocket and missile fuels, fireworks, flares, matches, dyes, lubricants, paints, rubber products and pharmaceuticals. Perchlorates have also been found in some naturally mined nitrate and phosphate fertilizers, particularly rock fertilizers from Chile.

Beginning in 1990, as part of the LUB GWMA, DEQ Water Quality (DEQ WQ) began sampling wells in the area due to elevated nitrate contamination in the water. DEQ regularly samples a network of 36 wells to monitor nitrate concentrations.

In early 2003, DEQ WQ and Site Assessment staff sought to determine the source of high nitrate concentration groundwater near one of the Port of Morrow wastewater land application areas. Following DEQ review of groundwater data from several sites, and after consulting with EPA, a recommendation was made to submit some of the groundwater samples from the food processor monitoring wells for explosives and perchlorate analysis. Groundwater samples collected in June 2003 from three Port of Morrow wells located along the northern fence line of the Boardman Naval Bombing Range contained some low levels of explosives, and detected perchlorate in all three wells at concentrations ranging between 3.7 and 4.1 micrograms per liter (ug/l).

Subsequent analysis of groundwater samples from 133 wells located across the LUB GWMA indicated widespread perchlorate contamination
Site History:
Contamination Information:
Manner and Time of Release:
Hazardous Substances/Waste Types:
Environmental/Health Threats:
Status of Investigative or Remedial Action:
Data Sources:

Substance Contamination Information

Substance Media Contaminated Concentration Level Date Recorded
No information is available

Investigative, Remedial and Administrative Actions

Action Start Date Compl. Date Resp. Staff Lead Pgm
Further Investigation of Area Facilities recommended  (Primary Action) 02/02/2009 02/02/2009 David Anderson SRS
View Full Report Showing Action History

Key to Certain Acronyms and Terms in this Report:

You may be able to obtain more information about this site by contacting David Anderson at the Eastern regional office or via email at If this does not work, you may contact Ximena Cruz Cuevas (503) 229-6811, or via email at or contact the Eastern regional office.