Power Brite Painting Company specializes in refurbishing exterior painted surfaces that have been hard hit by humidity and insect debris. It uses a special technique, called pressure cleaning, before priming and painting the surface. The refurbishing process involves the following steps: Unskilled laborers trim all trees and bushes within two feet of the structure. Skilled laborers clean the building with a high-pressure cleaning machine, using about 6 gallons of chlorine per job. Unskilled laborers apply a coat of primer. Skilled laborers apply oil-based exterior paint to the entire surface. On average, skilled laborers work 12 hours per job, and unskilled laborers work 8 hours. The refurbishing process generated the following operating results during the year on 628 jobs