1. (1) The owner or operator of an UST system that is located at an elevation that produces a gravity head on an underground piping system shall ensure that the product pipe is equipped with one of the following devices:

   1. (a) a department-approved anti-siphon valve;
   2. (b) a department-approved normally closed solenoid valve; or
   3. (c) any other department-approved device designed to prevent siphoning.

Authorizing statute(s): 75-11-505, MCA

Implementing statute(s): 75-11-505, MCA

History: NEW, 2011 MAR p. 145, Eff. 2/11/11.