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ConAgra Foods Lamb Weston Inc. Pasco, Washington: Hydrogeologic Assessment

Publication number Date Published
15-03-023July 2015
VIEW NOW ConAgra Foods Lamb Weston Inc. Pasco, Washington: Hydrogeologic Assessment (Number of pages: 94) (Publication Size: 2210KB)

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Note: Appendix G

Appendices A-F and H-I
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Author(s) Redding, M.
Description ConAgra Foods Lamb Weston Inc. in Pasco (ConAgra) is a vegetable processor that applies process wastewater year-round on over 3,000 acres of land to grow crops. A review of ConAgra’s data, reports, and hydrogeologic conditions was conducted to evaluate the adequacy of their treatment system.

It is determined that ConAgra is land applying excessive wastewater to the soils and is causing impacts to groundwater quality with elevated nitrate and total dissolved solids. It is determined that year-round application at this site is not protective of groundwater quality.

It is recommended that ConAgra modify their wastewater management to apply process wastewater to land only in amounts and at times when crops can use the nutrients.
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Contact Melanie Redding at 360-407-6524 or
Keywords food processor, land treatment, year-round application, groundwater
WATERSHED Water Resource Inventory Area 36 Esquatzel Coulee

Quality Assurance Project Plan: ConAgra Foods (Lamb-Weston) Pasco Hydrogeologic Review