Ill. Admin. Code tit. 35, § 808.410
a) Samples must be representative of the wastestream and shall:
b) The following properties shall be determined and reported:
c) The waste shall be analyzed for its constituents as follows;
d) The analysis must report the average concentration or mass percentage and the expected range of each major constituent and significant trace constituent. The expected range is the 95 percent confidence intervals for each set of analyses for the constituent. The error analysis must take into account the following:
Physical and chemical analyses of wastes for purposes of this Subpart shall be conducted as follows: