United Natural Foods Inc. – Combined Private and Public Sewer Lift Station
Project Description
Romtec Utilities designed and supplied a wastewater lift station for the expansion of a commercial distribution center and future residential development. The design standards of the local water authority called for Flygt pumps and in this application 7.5 hp motors were selected to meet target flow requirements. Active volumes of wastewater are detected using an ultrasonic transducer with a backup conductive probe for redundancy. Romtec Utilities designed the electrical controls for this application using an Allen-Bradley programmable logic controller (PLC) configured for this duplex pumping application. The controller was mounted inside a NEMA 4 painted steel enclosure and installed beneath a steel 4-post shelter. This setup provides ideal weather protection and shelter for operations personnel onsite.
What Romtec Utilities Provided
- Lift Station Design & Engineering
- Package Lift Station Supplier
- Package Lift Station Manufacturer
- Package Lift Station Specification Writer
- On-Site Construction Adviser
- On-Site Start-Up Management
- Lift Station Site Plan Layout Designer
| 187 | 32.8′ |
| GPM | TDH |
Why They Chose Romtec Utilities
Romtec Utilities was hired to design and supply a wastewater lift station to expand the sewer infrastructure in Ridgefield, WA. The lift station was for an expansion of a commercial distribution center for United Natural Foods, Inc. or UNFI. Clark Regional Wastewater District, CRWWD, is the local water authority and needed to expand its sewer system for future residential development in this area of Ridgefield. To meet the needs of both UNFI and CRWWD, these agencies agreed to work together on a lift station that would meet the current needs of the UNFI expansion while also meeting the future needs of the District. Working as a private entity, UNFI employed their own engineers and consultants to oversee the project. ESI Design Services worked on this project as the site civil engineer, while PBS Engineering worked as the consulting engineering for the pump station site. Romtec Utilities coordinated with these organizations to design the lift station according to the unique requirements of this project. Tapani, Inc. was the installing contractor of the lift station. Once completed, Romtec Utilities sent a start-up technician to Ridgefield to commission the system and provide start-up testing and training services for this system.