Section 302.207  Radioactivity

a)         Gross beta (STORET number 03501) concentration shall not exceed 100 picocuries per liter (pCi/L).

b)         Strontium 90 (STORET number 13501) concentration must not exceed 2 pCi/L.

c)         The annual average radium 226 and 228 (STORET number 11503) combined concentration must not exceed 3.75 picocuries per liter (pCi/L).

(Source:  Amended at 30 Ill. Reg. 4919, effective March 1, 2006)