Commenting open: September 17, 2025 02:58PM MT - October 27, 2025 05:00PM MT.
DP-1399, Mosaic Potash Carlsbad, Inc.: John Anderson, proposes to renew the Discharge Permit for the discharge of up to 7,500,000 gallons per day of tailings, brine, and other fluids from a potash mine processing facility to a Salt Stack at the plant site and to a brine management area located within Laguna Grande. Potential contaminants from this type of discharge include chloride, sulfate, and total dissolved solids. The facility is located at 1361 Potash Mines Rd., approximately 13 miles east by southeast of Carlsbad, in Sections 1, 12, 13, 23, 24, 25, 26, and 35, Township 22 South, Range 29 East; Sections 2, 3, 4, 8, 9, 10, 15, 16, 17, 18, and 19, Township 23 South, Range 29 East; and Sections 6, 7, 18, 19, and 30, Township 22 South, Range 30 East, Eddy County. Groundwater most likely to be affected is at a depth of approximately 0 to 50 feet and has a historical total dissolved solids concentration of approximately 3,200 to 420,000 milligrams per liter.
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