Superfund Site:

MONSANTO CHEMICAL CO. (SODA SPRINGS PLANT)
SODA SPRINGS, ID

Superfund Site Profile

Site Contacts

Remedial Project Manager
Kathryn Cerise
(303) 312-6101

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Site Location

Street Address:
HWY 34, 2 MI N OF CY, SODA SPRINGS, ID 83276

Background

The 800-acre Monsanto Chemical Co. (Soda Springs Plant) site is located outside the city limits of Soda Springs, Idaho. The site includes the 540-acre Monsanto plant operating area and a 260-acre buffer area.

Monsanto purchased the property in 1952 to use local phosphate-rich ore to manufacture elemental phosphorus. Site activities and waste disposal practices contaminated soil and groundwater with hazardous chemicals and radioactive constituents. Following cleanup, operation and maintenance activities and monitoring are ongoing.