Melvin Builder and Dr. Jones enter into a contract for Melvin to build Dr. Jones' doctor's office in Denver. The construction contract contains a mandatory arbitration clause. Dr. Jones believes Melvin breached the construction contract by using substandard building materials. The dispute goes to arbitration, and the appointed arbitrator rules in favor of Dr. Jones and against Melvin Builder for damages. Melvin thinks the arbitrator made a mistake in applying the law, and wants to appeal the arbitrator's decision. Explain Melvin's grounds and rights in appealing the decision of the arbitrator.