“I have worked with Grainger Consulting, for the past several years, on the design rehabilitation and upgrade of the water and fire protection systems for the Grand Canyon National Park Airport. This project included the design of a new water distribution building with associated pumps, generators and other hardware. It also involved the conversion of a fire protection system using untreated water to one using treated water. I have found the firm to be extremely knowledgeable particularly in the field of fire protection. They have been responsive to the customer’s needs and it is a pleasure to work with their staff.” Arizona Department of Transportation Aeronautics Division Michael A. Covalt, Airport Manager