The Secondary Clarifiers are an essential process for the Wastewater Treatment and Resource Recovery Facility (WWTRRF) where bacteria are separated from the water and returned to the Aeration basin to continue to do work breaking down the liquid sewer stream. The water continues to the chlorine contact chamber where it is disinfected and discharged to…
This project replaces and upgrades components of the secondary digester complex at the Wastewater Treatment Resource Recovery Facility. Improvements are needed to replace aging equipment, ensure redundancy, and address equipment-SCADA connectivity limitations. An external pump mix system, ferric chloride injection, new boiler, new booster pump, new heat exchanger, and new piping and valves was recommended…
This project will install a 500 kW Battery Energy Storage System (BESS) at the Wastewater Treatment Resource Recovery Facility (WWTRRF). This system will maximize the utilization of renewable energy produced onsite by storing energy generated from existing renewable energy systems and discharging it during high-demand periods. The project aligns with the City’s commitment to sustainability…
Basic description: The purpose of this project is to replace an existing sewer lift station at 4890 NW McKennon Road with a new sewer lift station package. The project includes providing and installing a new sewer lift station and installation of a new doghouse manhole. The new sewer lift station will be connected to an…
This project is to protect the West Primary Clarifier from erosion and acid attack that happens in wastewater environments. The launder (outside ring) where the water is moving faster and cascading down a wall is where most of the erosion takes place. Over time this erosion will expose aggregate and, left unchecked, can cause structural…
The project completes the Engineering services and Preliminary Design Report. The eventual project would provide: A new 48” sewer manhole with approximately 15 LF of 18-inch gravity sewer connecting the new manhole and a new sewer lift station. A new packaged sewer lift station with two submersible pumps, each with a capacity of approximately 475…
This project consists of mobilization, construction traffic control and infiltration correction of 90 sanitary sewer manholes. A map of rehabilitation manholes with existing sanitary sewer manhole photos is available at this link. This is the 2nd year of a 5-year project. The overall focus of this project is to reduce inflow/infiltration (I/I) of groundwater into manholes located where…
The City of Pendleton (City) owns and operates a sewer collection system serving the residents and businesses within its service area. This Collection System Master Plan (CSMP) serves as a planning document to help evaluate growth to build-out of the City’s urban growth boundary (UGB), which will approximately double the number of current residents and…
Project will cover the Chlorine Contact Chamber at the Wastewater Treatment Resource Recovery Facility (WWTRRF) with solar panels. The solar array shading is designed to reduce facility power costs by integrating a renewable resource, providing at least 240-300 kilowatt hours of power. Additionally, placing the panels over the chlorine contact chamber provides shade to cool…
This project installs a 12” sanitary sewer main approximately 273 feet in length under Tutuilla Creek to Tutuilla Road and approximately 1,096 feet of 8” sanitary sewer pipe in Tutuilla Road up to SW Runnion Avenue. The project also includes: Connecting into an existing manhole by coring the existing manhole at Station 0+00 that presently has…