As the Civil Engineer of Record for the Paycom worldwide headquarters building located in northwest Oklahoma City, Johnson & Associates was chosen by the Oklahoma City Environmental Assistance Trust (OCEAT) and the Oklahoma City Water Utilities Trust (OCWUT) to design a major sewer interceptor relief main to serve the Paycom project as well as the future and existing development in the basin. The sanitary sewer line, a 36″ main stretching from ½ mile north of NW 164th Street west of N Rockwell Avenue to ½ mile south of Memorial Road along Walnut Creek, is a total of approximately three miles in length and relieved two large lift stations that were roughly 20 years old.