Rule: 17.30.628	Prev     Up     Next
	Rule Title: I CLASSIFICATION STANDARDS

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Department:	ENVIRONMENTAL QUALITY
Chapter:	WATER QUALITY
Subchapter:	Surface Water Quality Standards and Procedures
This is an obsolete version of the rule. Please click on the rule number to view the current version.

	Effective Date:		5/13/2017
	History Notes:		History: 75-5-201, 75-5-301, MCA; IMP, 75-5-301, 75-5-313, MCA; Eff. 12/31/72; AMD, Eff. 11/4/73; AMD, Eff. 9/5/74; AMD, 1980 MAR p. 2252, Eff. 8/1/80; AMD, 1982 MAR p. 1746, Eff. 10/1/82; AMD, 1988 MAR p. 1191, Eff. 6/10/88; AMD, 1994 MAR p. 2136, Eff. 8/12/94; AMD, 1995 MAR p. 1798, Eff. 9/15/95; AMD, 1996 MAR p. 555, Eff. 2/23/96; TRANS, from DHES, and AMD, 1996 MAR p. 1499, Eff. 6/7/96; AMD, 1999 MAR p. 94, Eff. 1/15/99; AMD, 1999 MAR p. 2257, Eff. 10/8/99; AMD, 1999 MAR p. 2275, Eff. 10/8/99; AMD, 2002 MAR p. 387, Eff. 2/15/02; AMD, 2006 MAR p. 528, Eff. 2/24/06; AMD, 2014 MAR p. 1815, Eff. 8/8/14; AMD, 2017 MAR p. 602, Eff. 5/13/17.
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Other rule versions existed in ARM on or after March 31, 2007