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EXPERIENCE Town of West Seneca Sanitary Sewer Improvements GRANT FUNDED Location: West Seneca, NY Client: Town of West Seneca Completion Date: Ongoing CPL performed the evaluation, analysis, design and construction administration of various sanitary sewer system improvements throughout the Town of West Seneca. This was done in order to correct the deficiencies within • Phase 4 Sewer Rehabilitation: Relining of approximately the sanitary sewer system, as a result of the 76,000 linear feet of sanitary sewers and the rehabilitation New York State Department of Environmental of approximately 300 manholes. Conservation’s (NYSDEC) issued Order on Consent for excessive inflow and infiltration (I/I) • Phase 5 Sewer Rehabilitation: Lining of approximately and sanitary sewer overflows (SSO). 44,000 linear feet of sanitary sewer main and rehabilitation of manholes along Seneca Street between Main Street and The collection system consists of several Transit Road. pump stations, approximately 29 miles of large • Phase 6–7 Sewer Rehabilitation: Lining of approximately diameter interceptor sewers, approximately 81,000 linear feet of sanitary sewer main and rehabilitation 120 miles of small diameter sewer and over of manholes in the area of Angle Road, Reserve Road and 3,500 manholes. The following projects are behind Southgate Plaza. completed, currently under construction or at • Phase 8 Sewer Rehabilitation (in construction): Lining of various phases of design. approximately 140,000 linear feet of sanitary sewer main, including 24” and 36” trunk sewers, and rehabilitation of • Phase 2 and 3 Sewer Rehabilitation: Relining manholes. This phase was particularly challenging and of approximately 130,000 feet of sanitary required significant bypass pumping operations as well sewers and the rehabilitation of over 800 as the construction of temporary access roads to facilitate manholes. construction. • East and West Road (Leydecker Phase) Sewer Rehabilitation: Replacement of approximately CPL continues to work closely with the NYSDEC on planning 3,100 feet of sanitary sewer, relining of and implementation of the next phases of the sanitary approximately 4,500 feet of sewers and the sewer rehabilitation program. Future rehabilitation efforts rehabilitation of over 100 manholes. are focused on addressing deficiencies on the private side • East and West Road (Houghton Phase) Sewer of the sanitary sewer system, which has been identified as Rehabilitation: Replacement of over 5,500 a remaining source of inflow and infiltration. The goal of the feet of sanitary sewer mains, replacement of NYSDEC Consent Order is to reduce inflow and infiltration 50 manholes, relining of approximately 9,200 and eliminate sanitary sewer overflows, and recent data feet of sewer mains and rehabilitation of 39 shows that, as a result of the completed projects, sanitary manholes. sewer overflows have been reduced by approximately 80% over the past three years. • 48” and 36” Sewer Trunk Main Replacement and Installation: Replacement of Upcoming phases are being planned strategically to approximately 2,600 feet of 48” sewer trunk maximize system benefit, remain cost-effective, and leverage main, installation of 4,300 feet of new 36” available grant funding to the greatest extent possible. In sewer trunk main parallel to the existing 36” support of this effort, CPL assisted the Town in securing an sewer main in order to increase the capacity Engineering Planning Grant to fund a comprehensive flow and storage of the conveyance system to help study to help evaluate system performance and identify reduce SSOs. priority focus areas for future rehabilitation projects. 22 Page 92 of 301