![So Long to Red Circles](https://cole-tpomag.imgix.net/https%3A%2F%2Fwww.tpomag.com%2Fuploads%2Fimages%2Fimg_0019.jpg?crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=620&ixlib=php-1.1.0&q=75&w=1024&s=e170780a865384b548e6e8ce2e13a98d)
John Lande remembers a time when he AND his staff didn’t enjoy going to work. In the late 1990s, a new permit imposed chlorine, ammonia and metals limits on the City of Monroe (Wash.) Wastewater Treatment Plant that the fixed-film rotating biological contactor (RBC) process just...