(2) Any person may enter into a written agreement to arbitrate or conciliate any existing dispute or any dispute arising thereafter between that person and another. If the dispute is within the scope of ORS 36.450 to 36.558, the agreement shall be enforced by the courts of this state in accordance with ORS 36.450 to 36.558 without regard to the justiciable character of the dispute. In addition, if the agreement is governed by the law of this state, it shall be valid and enforceable in accordance with ordinary principles of contract law. [1991 c.405 §2; 1993 c.18 §12]