The City of Brighton, Colorado by and through its Division of Procurement & Contracts is soliciting written sealed proposals from qualified firms to perform design services for Greensand Airgap Engineering Services for the City of Brighton. The City of Brighton's Greensand Plant's pipe gallery contains an air gap that is currently on the filter to waste pipeline portion of the pipe gallery, located inside the greensand plant building. This project will remove and reinstall the airgap on the outside of the building.