EiTective February 18, 1987, all new construction of fertilizer and soil conditioner facilities shall provide secondary product containment as specified in rules 21-44.51 (200) to 21-44.58 (200). Effective February 18, 1997, ten years after the adoption of these rules, all fertilizer and soil conditioner facilities shall provide secondary product containment as specified in these rules.
Iowa Admin. Code r. 21-44.50