74:51:01:46Criteria for coldwater marginal fish life

propagation waters. The criteria of parameters for coldwater marginal fish life propagation waters and their allowable variations that are not included under § 74:51:01:55 and Appendix B, unless set under § 74:51:01:24, are as found in the following table: Parameter Criteria Unit of Measure Special Conditions Total ammonia nitrogen as N Equal to or less than the result from Equation 3 in Appendix A mg/L 30-day average Equal to or less than the result from Equation 1 in Appendix A mg/L daily maximum Dissolved oxygen as measured anywhere in the water column of a non-stratified water body, or in the epilimnion and metalimnion of a stratified water body > 5.0 mg/L daily minimum Undisassociated hydrogen sulfide < 0.002 mg/L daily maximum pH > 6.5 - < 9.0 units see § 74:51:01:07 Total Suspended Solids < 90 mg/L 30-day average < 158 mg/L daily maximum Temperature < 75 °F see § 74:51:01:31 For special effluent limitations related to coldwater fisheries, see § 74:51:01:32.

Source: SL 1975, ch 16, § 1; 4 SDR 32, effective December 4, 1977; 5 SDR 21, effective September 21, 1978; transferred from § 34:04:02:35, effective July 1, 1979; 10 SDR 145, effective July 4, 1984; 13 SDR 129, 13 SDR 141, effective July 1, 1987; 19 SDR 111, effective January 31, 1993; transferred from § 74:03:02:35, July 1, 1996; 24 SDR 10, effective July 20, 1997; 31 SDR 29, effective September 13, 2004; 35 SDR 253, effective May 12, 2009.