Ill. Admin. Code tit. 35, § 302.525 - Radioactivity
Except as provided in Section 302.102, all waters of the Lake Michigan Basin must meet the following concentrations:
a) Gross beta concentrations must not exceed 100 picocuries per liter (pCi/L).
b) Strontium 90 concentration must not exceed 2 picocuries per liter (pCi/L).
c) The annual average radium 226 and 228 combined concentration must not exceed 3.75 picocuries per liter (pCi/L).
Notes
Amended at 30 Ill. Reg. 4919, effective March 1, 2006
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