The city of Abbotsford is requesting approval from the state Department of Natural Resources to upgrade their wastewater treatment system.
The city’s treatment plant has historically performed adequately and has complied with state effluent discharge standards. But, existing structures and equipment are more than 30 years old and have served beyond their useful life expectancy.
The upgrade is estimated to cost $9.1 million.
Plans call for construction of a new sequencing batch reactor treatment system on vacant, city-owned property 1,000 feet southeast of the current treatment facility, between 11th Street extended and Elm Brook. A new outfall sewer will discharge the treated effluent to Elm Brook immediately west of the new site.
The overall project will include an upgrade of the existing influent sewage pumping station including installation of a new influent fine screen unit and a force main sewer extension to the new site. There will be a new grit removal unit, new dual-tank sequencing batch reactor treatment system, new chemical-feed phosphorus-reduction unit, new aerobic waste sludge digester unit and new waste sludge reed storage beds along with a new administration and control building with laboratory and associated equipment.
The city will be required to comply with new water quality standards for phosphorus. The requirements associated with the new phosphorus standards are addressed in the compliance schedule of the city’s recently re-issued wastewater discharge permit.
The estimated construction cost for the proposed project is $9,163,000 with annual operation and maintenance costs of $400,000. The City will seek financial assistance through the U.S.D.A. Rural Development program. Depending on the final funding package, the estimated user charge for the average residential customer is expected to increase from the current rate of approximately $42 per month to between $47 and $52 per month.
A preliminary environmental assessment has been conducted for the proposed project, and DNR has determined that completion of an environmental impact statement will not be required.
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