The Greniers (plaintiffs) entered into an agreement with Compratt Construction Co. (Compratt) (defendant) whereby Compratt would pay the Greniers $25,500 for blasting work in the construction of roads. Payment was conditioned upon the Greniers obtaining a letter signed by the city engineer by a certain date, certifying that a certificate of occupancy could be obtained by Compratt in the subdivision where the roads were located. The contract also contained a liquidated damages clause if the Greniers did not perform on time. Although the Greniers completed their work on time, they were unable to obtain a letter from the city engineer because he did not ordinarily write such letters and refused to do so. A week and a half after the agreed upon completion date, the Greniers obtained a letter from the assistant city attorney authorizing the issuance of certificates of occupancy. The Greniers brought suit to obtain the $25,500 under the contract. Compratt counterclaimed seeking enforcement of the liquidated damages clause. The trial court ruled in favor of the Greniers for $23,000, which was the contract price minus damages for the letter from the assistant city attorney coming ten days late. Compratt appealed.