G&D has extensive experience in performing flow monitoring in sanitary sewer collection systems. G&D has installed data loggers in sewage lift stations, level sensors in permanent flume installations, and performed numerous temporary flow metering programs using a variety of metering technologies. G&D will also install rubber-tire fiberglass flumes in temporary metering studies where accuracy at very low flows is required. G&D also has experience constructing permanent flow metering stations typically for billing purposes including provisions for solar power and wireless communications.