S.D. Admin. R. 74:51:01:41

Current through Register Vol. 51, page 67, December 16, 2024

Section 74:51:01:41 - Application of chronic/acute criteria

Acute and chronic criteria established under § 74:51:01:55 and as translated by Appendix B at the end of this chapter shall be applied as follows:

(1) Compliance with the chronic criteria or criteria continuous concentration (CCC) is based on the results of a 30-day average. Compliance with CCC in a surface water discharge permit may be based on grab or composite samples;

(2) Compliance with the acute criteria or criteria maximum concentration (CMC) is based on the results of any one grab sample. However, compliance with CMC in a surface water discharge permit may be based on a composite sample.

S.D. Admin. R. 74:51:01:41

19 SDR 111, effective 1/31/1993; transferred from

General Authority: SDCL 34A-2-11, 34A-2-93.

Law Implemented: SDCL 34A-2-7, 34A-2-11, 34A-2-21.

Criteria for toxic pollutants, § 74:51:01:55.