WAC 173-160-214   What are the limitations for use of drilling materials?  (1) At no time shall a product contain materials that:

     (a) Are toxic or polluting;

     (b) Develop odor or color changes in the water; or

     (c) Serve as a microbial nutrient.

     (2) Organic materials which foster or promote undesired organic growth or have the potential to degrade water quality shall not be employed in the construction of a water supply well. This includes, but is not limited to, brans, hulls, grains, starches, and proteins, unless NSF/ANSI approved.



[Statutory Authority: Chapter 18.104 RCW. 09-01-125 (Order 08-10), § 173-160-214, filed 12/19/08, effective 1/19/09.]