AUTHORITY: Implementing and authorized by Section 4(g) of the Environmental Protection Act (Ill. Rev. Stat. 1981, ch. 111½ par. 1004(g)) and by 35 Ill. Adm. Code 309.155, 309.208(e), and 309.262.ENVIRONMENTAL PROTECTION AGENCY
Although most sludges will not contain sufficient potassium levels for optimum nutrient loading, the potassium concentrations in sludge shall be analyzed for the purposes of advising sludge users.