OAR 690-240-0450: Cleaning

(1) All drill cuttings and fluids from drilling, cleaning and development shall be properly managed during construction, alteration or abandonment to protect ground water from contamination. (2) The landowner or the landowner's agent is responsible for management of drill cuttings and fluids left on site after well construction, alteration or abandonment is completed. (3) To prevent cross-contamination between wells, the drill rig and all drilling equipment shall be cleaned before and after well construction by one of the following methods: (a) Detergent washing and rinsing with potable water; (b) High pressure hot water cleaning; (c) Steam cleaning; or (d) Other methods as approved by the Water Resources Department.