Added by Stats. 1990, Ch. 504, Sec. 2.
(a)“Gypsum” means calcium sulfate dihydrate, a mineral used in the fertilizer industry as a source of calcium and sulfur which is also known as landplaster.
(b)“Phosphatic sulfate gypsum” means a by-product of calcium dihydrate from the manufacture of phosphoric acid, also known as phosphogypsum.
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