1. (1) A purveyor submitting a new or expanding Group B system design for approval using a nonemergency intertie source shall provide the following to the department or health officer:

   1. (a) A copy of the intertie agreement under subsection (2) of this section;
   2. (b) Evidence that the supplying water system currently operates in compliance with chapter 246-290 or 246-291 WAC;
   3. (c) Location of the proposed intertie;
   4. (d) Information on any water quality issues and treatment being used;
   5. (e) Demonstration of the source capacity and hydraulic capacity of the supply and receiving systems at the designed flow rate through the intertie;
   6. (f) A copy of the water right or water right change issued by ecology, if required under RCW 90.03.383;
   7. (g) Identification of alternative sources that will be used when the intertie agreement expires if the water is not being provided in perpetuity; and
   8. (h) Verification that a source meter has been installed to measure water received.

2. (2) An intertie agreement between purveyors must identify:

   1. (a) Specific time periods in which water will be provided;
   2. (b) The volume of water available for use, including any seasonal or other restrictions; and
   3. (c) How operations will be coordinated.

[Statutory Authority: RCW 43.20.050 and chapter 70.119A RCW. WSR 12-24-070, § 246-291-135, filed 12/4/12, effective 1/1/14.]