Rule 17.30.641 - SAMPLING METHODS(1) Water quality monitoring, including methods of sample collection, preservation, and analysis used to determine compliance with the standards must be in accordance with 40 CFR Part 136 (July 1, 2015) or other method allowed by the department.Mont. Admin. r. 17.30.641
Eff. 12/31/72; AMD, Eff. 11/4/73; AMD, Eff. 9/5/74; AMD, 1980 MAR p. 2252, Eff. 8/1/80; TRANS, from DHES, 1996 MAR p. 1499; AMD, 2002 MAR p. 387, Eff. 2/15/02; AMD, 2006 MAR p. 528, Eff. 2/24/06; AMD, 2008 MAR p. 946, Eff. 5/9/08; AMD, 2017 MAR p. 602, Eff. 5/13/2017 AUTH: 75-5-201, 75-5-301, MCA; IMP: 75-5-301, MCAA