Odors from the open wet well at the Las Vegas Street Wastewater Treatment Plant septage receiving station in Colorado Springs, Colo., were upsetting residents and business owners. Trash in the septage was plugging the impellers of the two old pumps and breaking their components two or three times per month.“We were holding the pumps together with Band-Aids,” says maintenance supervisor Dan Hammer. “My four mechanics were in the pit a lot and it was a hazardous environment. Besides being a confined-space entry, they had to wear respirators and constantly monitor air quality.”Replacement parts were difficult to locate and often required
