1. (1) For purposes of this chapter, the department adopts and incorporates by reference the following documents. All references to these documents in this chapter refer to the edition set out below:

   1. (a) Department Circular DEQ-1, "Standards for Water Works," 2024 edition;
   2. (b) Department Circular DEQ-2, "Design Standards for Public Sewage Systems," 2018 edition;
   3. (c) Department Circular DEQ-3, "Standards for Small Water Systems," 2023 edition;
   4. (d) Department Circular DEQ-4, "Montana Standards for Subsurface Wastewater Treatment Systems," 2023 edition;
   5. (e) Department Circular DEQ-7, "Montana Numeric Water Quality Standards" (June 2019 edition);
   6. (f) Department Circular DEQ-8, "Montana Standards for Subdivision Storm Drainage," 2024 edition;
   7. (g) Department Circular DEQ-10, "Standards for the Development of Springs for Public Water Systems," 2014 edition;
   8. (h) Department Circular DEQ-16, "Standards for Hauled Water Cisterns for Noncommunity Public Systems," 2014 edition;
   9. (i) Department Circular DEQ-20, "Standards for Non-Public Water Systems," 2023 edition;
   10. (j) Department Circular PWS-5, "Ground Water Under the Direct Influence of Surface Water Evaluation," 2022 edition;
   11. (k) Department Circular PWS-6, "Source Water Protection Delineation," 1999 edition;
   12. (l) the U.S. Department of Agriculture's National Soil Survey Handbook (USDA, NRCS, September 1999), and the Soil Survey Manual (USDA, October 1993), which contain a recognized set of methods for identifying the nature and characteristics of soils; and
   13. (m) ARM 17.30.1702 regarding setbacks between sewage lagoons and wells.
2. (2) Copies of the documents incorporated by reference in this rule may be obtained from the Department of Environmental Quality, P.O. Box 200901, Helena, MT 59620-0901.

Authorizing statute(s): 76-4-104, MCA

Implementing statute(s): 76-4-104, MCA

History: NEW, 2000 MAR p. 3371, Eff. 12/8/00; AMD, 2002 MAR p. 1465, Eff. 5/17/02; AMD, 2003 MAR p. 221, Eff. 2/14/03; AMD, 2004 MAR p. 2589, Eff. 10/22/04; AMD, 2006 MAR p. 528, Eff. 2/24/06; AMD, 2006 MAR p. 540, Eff. 2/24/06; AMD, 2008 MAR p. 946, Eff. 5/9/08; AMD, 2009 MAR p. 1786, Eff. 10/16/09; AMD, 2010 MAR p. 1796, Eff. 8/13/10; AMD, 2012 MAR p. 2060, Eff. 10/12/12; AMD, 2012 MAR p. 2067, Eff. 10/12/12; AMD, 2013 MAR p. 2081, Eff. 11/15/13; AMD, 2014 MAR p. 1802, Eff. 8/8/14; AMD, 2016 MAR p. 1008, Eff. 6/4/16; AMD, 2017 MAR p. 602, Eff. 5/13/17; AMD, 2018 MAR p. 1588, Eff. 8/11/18; AMD, 2019 MAR p. 826, Eff. 6/22/19; AMD, 2022 MAR p. 1695, Eff. 8/27/22; TRANS and AMD, from 17.36.345, 2023 MAR p. 324, Eff. 4/15/23; AMD, 2024 MAR p. 2144, Eff. 9/7/24; AMD, 2024 MAR p. 2191, Eff. 9/21/24.