Resolution No. 4793 - Laserfiche WebLink

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MWMC FACILmES PLAN made up of seven Commissioners. The City of Eugene appoints three members, the City of Springfield two, and Lane County two members. One appointee from each jurisdiction is an elected official, the others are lay representatives. MWMC's purpose is to protect the publ/c health, safety, and environment by providing high-quality wastewater management services to the Eugene-Springfield metropolitan area in a n-tanner that is effective, efficient, and meets customer service expectations. Based on past surveys, M-WMC is looked upon by the community as a good neighbor and has developed a reputation for being environmental stewards in the communities they serve. 1.3 Background 1.3.1 Collection System Both Eugene and Springfield have separate sewer systems that come together into a regional system of lines. Over 800 miles of sewer lines and 48 pump stations transport wastewater to the plant. Most of the conveyance pipelines of 24 inches in diameter or greater and associated pumping facilities necessary to convey the region's wastewater to the regional facility were included in the facilities' original construction. 1.3.2 Eugene-Springfield Water Pollution Control Facility The WPCF, located at 410 River Avenue in Eugene, officially began operation in April 1984 and was constructed as part of a $105 million regional wastewater treatment system program. The regional facility replaced the separate plants previously owned and operated by Eugene and Springfield because studies concluded that neither cities' separate treatment plants could meet water quality standards or capacity. Planning, design, and construction for the regional facility occurred between 1979 and 1984 at the site of the original Eugene wastewater treatment facility. Existing facilities were either expanded and made a part of the new regional facility, or demolished. The Springfield sewage treatment plant was demolished. Since startup in 1984, the WPCF has been operating successfully, meeting all regional demands for increased sewerage service and complying with the facility's National Pollutant Discharge Elimination System (NPDES) permit issued by the State of Oregon Department of Environmental Quality (DEQ). At the time of construction the capacity of the plant was projected to serve the growing metropolitan area for 20 years. Slower than anticipated growth in the 1980s has slightly extended the design life of the plant. As a result of the slow growth and limited changes in regulatory policy, there has been limited capital investment in the facility over the past 20 years. 1.3.3 Biosolids Management Facility The regional BMF is located at 29689 Awbrey Lane and was constructed in 1985 to provide storage, further stabilization, and drying of digested biosolids received from the WPCF. A 5.5-mile-long pipeline from the WPCF to the BMF feeds anaerobic digested biosolids to four facultative sludge lagoons (FSLs). The FSLs provide the additional detention time for natural processes to further stabilize the biosolids and reduce pathogens. The original design provided for the stabilized biosolids to be dewatered for 6 to 10 weeks in thirteen sealed asphalt drying beds. However, lower than anticipated solids processing efficiency 1-2 t~WMC_I.O_REV13.DOC