2020-04-13-minutes-public-works-study-session

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PROJECT NARRATIVE 7. Project Description; Describe the scope of work. Indicate the major work involved. Inc€ceding a brief rompprlson of existina end oronosed conditions. This project will construct an 64nch gravity sewer main, grinder pump station, 1.6 -Inch sewer force main and a 4 - inch force main to provide sanitary service to businesses south of Railroad Avenue and to support future develop- ment. The lift station will be constructed at the south and of the project and pump wastewater north in the 1.5 -Inch force main to Railroad Avenue, Into the City's existing sewer system. The 44nch force maim will not be active at the conclusion of construction; it would be installed to encourage future commercial / industrial development on unde- veloped lands south of the project area. The City applied for and received a COG grant in 2010 to support design and construction of sewer Improvements In the project area. Through completing designs, it was seamed that addl- tional funds are needed fior construction. Construction dewatering will be more extensive than what was originally budgeted for due to the high groundwater table in the area. Native soils will be saturated and not suitable for bermil so greater quantities of bank run gravel for trench backfill will be needed than was originally planned for. It was also learned that a cultural resources survey will be needed, adding additional costs to the project. 2. Explain the specific Infrastructure Issues the project addresser► and how they are linked to economic development Improvements. Some existing businesses In tate project area must stare their waste In holding tanks and then have it pumped Into trucks for transport to the City wastewater treatment plant. This process is costly and Inconvenient. Some businesses have expressed concems to the City regarding the costs and hassle of having to deal with sewage storage and disposal, and this project will help ensure these businesses remain comm tted to staying In the corrununityr. Existing business provide approodmately 40 jobs in the area. Estabilehing a sanitary sewer system in the area will also promote the development of other businesses along Main Street south of Railroad Avenue, Including the planned industrial area. This area is regionally Important due to the lack of Industrial zoned land available In the County. 3. Preliminary Engineeffng Phase; E-sttmated StertDate: Jan. 2020 EatimeW End Date: Apr. 2020 Please explain phase status (work already completed, In progress, awaiting funding, etc., and factors that may slow phase program). Preliminary construction plans, speclftcatlons and a cost estimate have been prepared for the project, using 2016 COG funds and City funds. The improvements shown along Main Street on the current plans extend to approx€- mately SW feet south of the intersection of Railroad Avenue.The City recently completed a Wastewater Collection System Planning report. The report determined that long term development of tete Industrial area will require sub- stantial Infrastructure improvement to adequately build out the entire area, which would otherwise delay the earn-- pletion of this project to serve existing businesses. The intent of the project is to provide Immediate sanitary sewer services to existing users, and to encourage future development In the immediate vicinity and In areas to the south towards the Interstate. 4. Right of Way Phase: Is It Required? Yes _K_ No Esiirnated gUrt Date. Jan. 2020 Estimated End Dar APr • 2020 Piease axpialn phase status {work already completed, In gess, awaiting funding, etc., and factors that may slow phase progress}. This phase will be completed in tandem with the engineering phase so that construction will not be delayed due to fight -of -way project requirements. Based on design work that has already been com- pleted, irs anticipated that temporary construction easements will be needed to construct sewer services and pump station Improvements.