ID H0367

Establishes legislative findings that phosphate fertilizer production is critical to national food security and Idaho's agricultural economy, and directs the Board of Environmental Quality to develop a program for proper design and construction of phosphogypsum stacks.

Defines phosphogypsum as a calcium sulfate by-product from phosphoric acid production and establishes that the bill does not supersede existing federal mineral processing waste exemptions or existing EPA/DEQ approvals.

Requires operators constructing new phosphogypsum stacks or lateral expansions to submit design and construction plans certified by professional engineers, including run-on/runoff controls, composite liners, leachate control systems, perimeter dikes, and groundwater monitoring plans.

Establishes a 90-day review period for the Department of Environmental Quality to approve or reject submitted plans, with operators allowed 45 days to submit amended plans if rejected, and rejection notices appealable to the Board.

Requires construction completion reports within 90 days of project completion and authorizes the Board to establish fees for plan review and approval.